In this article, we’ll review the top 8 best multimeters for HVAC applications.
An HVAC multimeter is what every HVAC technician always has in his pocket; it is more like a friend than a tool!
Finding the best HVAC multimeter wasn’t an easy task a few years ago when we had to buy and use the product to check its capability, which was both expensive and annoying!
Of course, when one miscalculation of yours can significantly decrease the performance of HVAC appliances, no one can risk using a faulty multimeter unit.
forhaveBut where the resources of getting authentic information are increased, the saturation has also skyrocketed, and filtering out the best multimeter for HVAC applications isn’t less than a hustle.
But worry not! We are here to save you from that hustle!
If you are also looking for the best HVAC multimeter, then this article will guide you to choose a unit that is best in every aspect starting from highly advanced features until high-end safety provisions.
So, stick with this article, and after reading the buyer’s guide section, you’ll be knowledgeable enough to select a unit on your own!
So, without further ado, let’s dive deep into it!
Contents
List of the top 8 best HVAC multimeters
1. Fieldpiece HS33 Multimeter
|
What it has |
What does it lack? |
|
Detachable multipurpose head |
No Flashlight |
Measurements:
The Fieldpiece HS33 multimeter has the functionality to measure AC/DC voltage, temperature, velocity, capacitance, and resistance.
One can also perform a flame rectifier diode test and a continuity check with a green LED, confirming the electrical connection between two points.
Where you have access to measure a lot of different features, you cannot test transistors or identify polarity using Fieldpiece HS33. Additionally, you won’t be able to measure AC/DC current and frequency!
Design:
The multimeter head, being detachable, is adjustable with multiple accessories to measure different parameters.
Just as an example, you can mount a dual-head manometer on its base to easily measure the pressure. Thus, omitting the need to bring whole instruments with you for each individual function
Although there is no built-in flip stand to support the unit on a flat surface, its magnetic hanger will be pretty handy in providing the flexibility to do hands-free operation. Just connect it to anything magnetic and do your job comfortably.
Thanks to its big carrying pouch, you can not only put the meter in it but related accessories as well. However, the absence of a flashlight limits its use to daylight areas only.
One major downside to this multimeter is its poor resolution LCD with 1999 display counts only making the measurements hard to read for old technicians with eyesight problems. This is one of the areas where most of the best HVAC multimeters on the list beat this unit.
Additionally, with no backlights and flashlights, operating the unit in the crawlspace and dimly lit areas is not possible!
Functions:
Fieldpiece HS33 lies in the category of true RMS multimeters, and it can effectively deal with nonlinear signals. With its min/max function, one can easily record the highs and lows of the measured signal to estimate the overall fluctuations.
Two additional handy features are its auto-shutoff, which helps batteries last longer, and the hold value feature, which freezes the value for the technician when he isn’t in the position to note it down. The latter simply makes your life easier!
Another major concern would be the absence of the auto-ranging mode. So, you’ll have to set the range for every measurement. It can give you a hard time if you are just getting started.
Safety:
Although the Fieldpiece HS33 weighs a bit more than an average multimeter, its sturdy design and robust casing help it last a long time.
Standing in the tough conditions at the jobsite isn’t difficult for this beast, and its rugged rubberized bumpers will help the unit absorb the high-drop impact after slipping from the hands!
Fieldpiece HS33 is listed by UL and CE along with the Cat III safety ratings that act as a guarantee that it is safe to use!
It’s the non-contact voltage detector that allows the technicians to remotely check the voltage presence in the HVAC appliances, omitting the need to join its probes with the wires!
In order to filter out the live wires from a set of wires, simply hold down NVC while touching the probe tip with the wire; a loud beep will act as a confirmation of voltage flow through the live wire. Thus, using a combination of NVC and a probe tip, live wire detection is also possible.
Whether you are just a beginner apprentice or a professional technician, Fieldpiece HS33 would do all the jobs. Additionally, you can use it for home troubleshooting!
2. Extech EX530 Multimeter
|
What it has |
What does it lack? |
|
Magnetic hanger availability |
No built-in flashlight |
Measurements:
The Extech EX530 multimeter can be used to measure AC/DC voltage, AC/DC current, temperature, frequency, capacitance, and resistance. It also has the functionality to perform a continuity check and diode testing.
Polarity identification and transistor checks can’t be made using the Extech EX530 as well.
Design:
Although the Extech EX530 isn’t equipped with a backside flip stand, this deficiency would be fulfilled by the magnetic hanger that you’ll get with this unit. Just attach it to a magnetic surface and enjoy your freehand operation.
The carrying case that you’ll get with the product will hold the Extech EX530 as well as related wires, thermocouples, and other HVAC testing equipment. However, you should also add a separate flashlight to this pouch for troubleshooting during the night or in dark places!
and thewide, its wide high-resolution LCwith ang 40,000-count display, the measurements would be clear enough to read, and backlight addition makes the readings visible in dimly lit areas. It offers the highest resolution in our list of the best HVAC multimeters.
Just like a few other units, the Extech EX530 has a bar graph feature to help you better analyze the disturbing signals.
Functions:
The Extech EX530 is a true RMS multimeter capable of operating in both manual and auto-ranging modes. Thus, it’ll be equally beneficial for both beginners and professional HVAC technicians to analyze nonlinear or disturbing signals.
By pressing the relative button, one can add a referenced value, and the multimeter will take measurements in the form of a difference from the set reference. Additionally, the min/max function will do the job of storing the highest and lowest values that a measured signal has!
Data freezing and an automatic shutoff feature are there in the Extech EX530 as well.
Safety:
This unit incorporates overload protection in the form of fuses. So, you’ll be safe from electric shock in case the current exceeds its limit.
The double-molded housing and strong, robust casing make Extech EX530 strong enough to bear not only the workplace roughness but also the high impact energy as a result of sudden drops from high altitude.
While working with wet evaporators or dripping air conditioners, most meters blow off due to water entering the circuit. That’s not the case with Extech EX530, as its waterproof design makes it best suited for HVAC and marine operations.
When it comes to overvoltage protection, the Extech EX530 is a CAT III up to 1000 volts and CAT IV up to 600 volts safety-rated multimeter unit, making it eligible to be used for high-power HVAC applications.
andgives theAdditionally, with its non-contact infrared thermometer with a laser pointer, it’s pretty easy to check the surface temperature of any component. This distinguishing feature gives Extech EX530 an edge over other HVAC multimeters.
With no option to do non-contact voltage detection or live line testing, the Extech EX530 lacks a great deal in this department.
Extech EX530 has a wide range of applications, including The Extech EX530 is specifically designed for industrial, MRO, electrical, and other professionals who need a heavy-duty, feature-rich multimeter.
3. Fluke 116 Multimeter
|
What it has |
What does it lack? |
|
High-resolution backlit LCD |
No magnetic hanger |
Measurements:
The Fluke 116 is designed to measure AC/DC voltage, AC/DC current, capacitance, and resistance just like any other multimeter on the market. Two features that make it the best multimeter for HVAC include temperature and frequency measurement.
For those who intend to use it in the lab, one can also test the diode and check circuit continuity instantly. However, you can’t perform a transistor check using Fluke 116, but that’s not a major concern for HVAC troubleshooting.
Design:
To enjoy hands-free operation, order the magnetic hanger separately with this unit, as you won’t get it with the multimeter itself. The absence of a kickstand makes a magnetic hanger the most needed accessory to make life easier!
Unfortunately, Fluke 116 doesn’t include a carrying pouch in related accessories, and neither is there any built-in flashlight.
So, before buying the unit for HVAC applications, make sure you have ample space in your tool kit. As you’ll be adjusting the unit and using a separate flashlight or headlamp for working in the dark areas. Readings will be clearly visible on its high-resolution LCD with 6,000 display counts.
To give users an analog touch, Fluke 116 incorporates a responsive bar graph. But bear in mind, it won’t appear on capacitance and temperature ranges!
One of the major concerns is its lack of LCD visibility when viewed from an angle. The look seems very faded and lacks contrast!
However, you won’t find any problems while using it during the night shift or in dark ducts, as its screen starts glowing when turning on the bright backlights.
Functions:
Where the auto shut-off feature helps the battery last longer, its hold function will make troubleshooting easier. That makes the operation easy in compact spaces like ducts, as with a single press, you can freeze any value on its screen that can be noted later!
Being a true RMS multimeter, the Fluke 116 beats other average RMS multimeters with its ability to accurately measure the varying signals regardless of the waveform. Thanks to its min/max function, one can easily filter out the highs and lows of any signal from a set of data.
By putting the unit on Auto-V Loz mode, you won’t have to switch between AC and DC measuring modes manually. Thus, this multimeter will do the task on its own.
Additionally, low input impedance filters out ghosts and unwanted voltages to get more accurate results!
Safety:
What I like the most about Fluke 116 is its high-level fused input protection. It protects both the user and the multimeter in the event of a current exceeding the maximum limit. So, don’t worry about overloading!
Fluke 116, having a sturdy casing, can withstand job site wear and absorb high-drop impacts. However, the more you take care of it, the more durable it’ll be!
Being backed by IP 42 ratings guarantees its dustproof nature. According to the standard, dust particles even up to the size of 1mm can’t go into the unit!
One more interesting addition is its CAT IV silicone leads that protect you from shock in case of overvoltage. Moreover, thanks to the dedicated slots on the multimeter’s back, you can easily fit the lead into them. In this way, you can enjoy single-handed operation.
Safety factors come first in HVAC troubleshooting, and having a Fluke 116 multimeter that is CAT III safety rated Thus, you can do your job without any risk of overvoltage shocks!
Still, limit this HVAC tester to single- and three-phase installations and don’t use it for high-end industrial applications.
One area where Fluke 116 lacks is its inability to perform non-contact voltage detection. Thus, in order to verify the presence of voltage, you’ll have to connect leads to the voltage source. Additionally, you can’t do live line testing using Fluke 116.
Using Fluke 116, you can test motors, compressors, heat pumps, and flame sensors. Thus, you can easily validate if these appliances are working properly or not.
Although it is the best HVAC multimeter and is specially designed to test HVAC appliances, But it’ll be equally handy for homes, offices, and especially for small electrician shops. Due to its wide range of functions, we’ve considered it the best unit for electrician jobs!
4. Amprobe AM-560 HVAC Multimeter
|
What it has |
What does it lack? |
|
Magnetic hanger availability |
No built-in stand |
Measurements:
The AM560 multimeter has the capability to measure AC/DC voltage, AC/DC current, temperature, frequency, capacitance, and resistance. One can also perform diode and audible continuity checks in no time.
Although you can’t check transistors or make polarity identifications, you won’t often need them in HVAC troubleshooting.
Design:
Amprobe supplies a magnetic hanger to make the job of HVAC technicians easy. Connect it with any magnetic material and take readings alone. However, it doesn’t equip any flip stands!
Additionally, there is a Velcro strap to hang the meter alongside a belt or any other solid surface for easy movement!
Its carrying pouch would have enough space to hold the multimeter and its related accessories. Thus, if you misplace things quite often, it’ll act as your helping hand in keeping things together.
No need to bring an additional flashlight or headlamp; its built-in flashlight would be enough to lighten up the dark area!
display,I can bet that you’ll also praise the clarity and sharpness of its high-resolution LCD. With 6000 display counts, a dual-function display and backlights for night use, the readings would be very easy to note regardless of what time of day it is. You won’t have such high resolution in any other best HVAC multimeter!
One additional feature that most units lack is a responsive bar graph. It not only gives an analog touch but is handy when dealing with noisy signals.
Functions:
Amprobe AM-560 can operate in both auto and manual ranging modes. Thus, it is equally beneficial for beginners and experts, but being an average RMS, results won’t be accurate in a noisy environment.
A few other handy functions include the data hold for freezing the value and min/max for determining the highs and lows of any signal. Lastly, the auto-shutoff feature will shut down the multimeter to prevent the battery from draining.
One distinguishing feature that this unit has is its relative mode. In this mode, the multimeter shows the value after taking the difference between the measured value and the reference value set by the user to see the fluctuations.
Safety:
For both the milliamp and high-current circuits, there are dedicated HRC fuses rated at 0.5 A and 11 A, respectively. In case of overloading, these fuses will be tripped off, and both you and your multimeter’s circuit will remain protected.
Thanks to the strong integral rubber holster and robust casing, the AM560 provides strong resistance to splashes. Thus, it can absorb the high-altitude drop impact and remain intact. It isn’t like a cheap unit that breaks into pieces with one fall.
AM560 is backed by the CAT III up to 1000V and CAT IV up to 600V safety ratings that make this HVAC test equipment- eligible to test low energy sockets and switches to high-voltage terminals.
The NCV detection feature is present in the AM 560 multimeter and makes the voltage detection process quicker and safer. There is no requirement to make a physical connection between the multimeter and the voltage source.
AM560 is the perfect device for all levels of HVAC professionals, starting from beginners apprentices, as it is equipped with all advanced features. Buying this unit will be your lifetime investment.
5. Fieldpiece LT17A Multimeter
|
What it has |
What does it lack? |
|
Built-in kickstand |
No built-in flashlight |
Measurements:
The Fieldpiece LT17A multimeter is capable of measuring AC/DC voltage, AC/DC current, temperature, frequency, capacitance, and resistance. Within only 5 seconds, you can perform a diode check using the Fieldpiece LT17A.
There is no transistor check or polarity identification option, but that won’t be a necessary requirement in any HVAC work.
Design:
The Fieldpiece LT17A is equipped with both a kickstand and a hanging magnet, allowing hands-free operation. This is a handy feature while working on any flat surface by putting the unit in an upright position. Moreover, while working in the standing position, one can connect it with anything magnetic.
Put everything in its soft nylon carrying pouch and move it anywhere you go. Thus, there is no headache from losing any accessory.
However, always keep an additional headlamp or flashlight with you, as there is no built-in light source in the Fieldpiece LT17A.
We won’t say that it has the best screen resolution in comparison with other HVAC multimeters. But it would be clear enough to be read easily. Additionally, with the bright blue light turned on, you won’t find any issues operating it in low-light areas.
Functions:
The Fieldpiece LT17A can only operate in manual ranging mode, which is a bit time-consuming. Moreover, with no true RMS feature, you can’t get accuracy while taking measurements in a noisy environment.
However, it can filter out the highs and lows of the measured signal for you from a wide range of input data.
Additionally, instantly hold any desired value with the intention to note it later by pressing the hold button. The auto-shutoff feature will help the multimeter battery run for a longer time by shutting the unit off when not in use.
Safety:
Built-in fuses protect the HVAC test instruments in case of current overload. Moreover, thanks to the robust ABS casing that can easily withstand jobsite harshness, you can expect this unit to last long time.
However, it may not withstand the frequent drops at high altitude, so don’t let it slip through your fingers too frequently.
Fieldpiece LT17A is designed to meet IEC 61010-1, pollution degree 2, and CE standards. This unit is certified by C-Tick and is CAT III up to 600V safety rated as well. Hence, it is dustproof and highly safe. multimeter!
However, with no NCV detection and live line testing, you won’t have much flexibility in voltage detection on electrical wires. But for HVAC appliances, its absence won’t make much difference.
The FieldpieceFieldpiece LT17A can perform any kind of troubleshooting you can name, and it’ll be the best multimeter for HVAC technicians who are just getting started!
6. Tacklife CM06 HVAC Clamp Meter
|
What it has |
What does it lack? |
|
Carrying pouch availability |
No built-in flashlight |
Measurements:
600A AC/DC Clamp Meter and UEi DL389B are the two clamp meters in our list of HVAC clamp meters that are capable of measuring AC/DC voltage, frequency, capacitance, resistance, and AC current with the clamp size of 26mm.
One can also perform polarity identification, diode testing, and continuity checks using the Tacklife CM06.
Where Tacklife CM06 is capable of analyzing many parameters, one can do a transistor check, but it also fails to measure the temperature and DC current.
Design:
The Tacklife CM06 comes with a carrying pouch to hold the unit while moving it around. It‘ll also have a hanging magnet to mount it with anything magnetic to take readings singlehandedly.
Moreover, there is a backside kickstand in its design as well. But the lack of a flashlight limits its use to daylight or lighted areas only.
The LCD where readings are displayed is of high definition, having 6,000 display counts. The addition of a backlight makes the reading visible in dark areas as well.
Always press the “zero” button before taking any readings to nullify the chances of error. This is to avoid the earth’s magnetic field influence and achieve better accuracy in results!
Functions:
The Tacklife CM06 falls into the category of auto-ranging multimeters. But without a true RMS multimeter, and you won’t be able to analyze the disturbing signals. The absence of this feature limits the use of any good HVAC multimeter.
This HVAC clamp meter doesn’t have min/max function to store the highs and lows of the signal; thus, it isn’t the right choice to deal with fluctuating measurements.
The Tacklife CM06 went into sleep mode after a few minutes of inactivity to conserve battery life. Moreover, its hold function will freeze the value for the technician to note down later, even after disconnecting probes from the source.
Safety:
With no direct contact requirement for amperage measurement, there is no chance of overloading, resulting in no need for any fused overload protection. However, its outer surface is double-insulated; thus, you’ll be safe from any external shock!
Its outer casing is strong enough to bear any blow without deteriorating in a tough jobsite environment. So, you can expect it to last a long time. But avoid dropping it from high-altitude sites, as it won’t withstand the frequency of drop impacts!
Tacklife CM06 is a CAT III safety rated up to 600 V that acts as a guarantee of its safety. Thus, this unit falls into the list of highly safe multimeter units for residential and commercial use.
The presence of non-contact voltage detection gives the Tacklife CM06 an edge over others. If the voltage induction area of the NCV is close to 90–1000 V AC voltage, the multimeter unit will make a loud beep, and the light will start glowing. You can also do live line testing using Tacklife CM06.
The ergonomic design of the Tacklife CM06 makes it the best multimeter for HVAC with straightforward troubleshooting, as it’s pretty easy to hold in hand. However, one can also use it for car inspection, electronics repairs, home appliances, and automotive repairs.
7. Triplett 1101-B Multimeter
|
What it has |
What does it lack? |
|
A back stand is available. |
No carrying pouch is available. |
Measurements:
Triplett 1101-B can accurately measure the AC/DC voltage, DC current, and temperature, making it capable of doing any kind of HVAC troubleshooting.
Additionally, one can also test transistors, check diodes, and perform continuity testing on any HVAC appliances.
With no allowance to measure capacitance and frequency and the inability to perform polarity identification, its use is limited. Still, you won’t find any problems during HVAC testing!
Design:
Although it is equipped with a back stand to give support to the multimeter when placed in an upright position, But it isn’t sturdy and falls down with a slight disturbance. So, it won’t make much difference.
Don’t expect a very high-resolution LCD with only 1999 display counts. Still, it’ll be clear enough to view the readings regardless of the light intensity in your surroundings. Moreover, its backlights make the readings visible in dark areas.
Having no hanging magnet or carrying pouch, the Triplett 1101-B can give you a hard time when operating single-handedly. Additionally, if you intend to buy this unit to operate it in dark areas, bring a separate flashlight with you!
Functions:
Although there are 19 different ranges for quick and accurate measurements of different parameters, But the absence of the auto-ranging feature limits the Triplett 1101-B to experienced technicians only!
Pressing the hold button shows the “HD’ symbol on the screen. It freezes the value, which remains stored even if you disconnect the test lead from the source. To go out of hold mode, press the button twice!
Additionally, in order to maximize the battery life, the Triplett 1101-B also incorporates the auto-shutoff feature. It gets activated after a few minutes of inactivity.
Triplett 1101-B falls into the category of average RMS multimeters with no exceptional capability to analyze the varying signals. Thus, it is only suitable for single linear analysis, and you won’t be able to use it for variable speed drives and related applications!
Estimating fluctuations in the signal by knowing its highs and lows isn’t available in Triplett 1101-B. So, if you often play with nonlinear signals, go for some other unit.
Safety:
Another amazing feature of the Triplett 1101-B is its fused input protection. That acts as resistance to overloads. Thus, even if the current exceeds its maximum limit, both you and your multimeter will be safe!
The tough casing and rubberized boot of the Triplett 1101-B make a perfect combination to provide good impact resistance in case of an accidental drop. With a robust structure, you can expect it to last a long time!
Triplett 1101-B is a CAT II safety-rated multimeter, which makes it safe to use in medium-level power applications. It’ll protect the user against instant shocks as a result of transient overvoltages.
Triplett 1101-B shares the contactless voltage detection feature. It makes this best HVAC multimeter most suitable for technicians to verify the voltage flow from any source without making any direct connections.
The Triplett multimeter is the perfect partner for HVAC technicians and will be very handy in any kind of HVAC troubleshooting.
The best part is that it’s not limited to HVAC troubleshooting alone. In fact, one can use it for fault diagnosis in security, home theater, circuit breakers, and household appliances. So, one product covers multiple tasks at a time.
8. UEI DL389B Clamp Meter
|
What it has |
What is it? |
|
Magnetic hanger availability |
No flashlight is provided. |
Measurements:
The UEi DL389B clamp meter is capable of measuring both AC and DC voltages, AC current, temperature, frequency, capacitance, and resistance with a jaw allowance of 28 mm. It also allows for instant continuity or diode checks.
Three things that you can’t do with the UEi DL389B are transistor checks, polarity identification, and DC current measurement.
Design:
It’s true that this unit doesn’t come with the flip stand. However, having a backside-hanging magnet will overcome this deficiency. You can connect the UEi DL389B multimeter with anything magnetic to enjoy hands-free operation.
A UEi-labeled carrying case will be shipped with the multimeter in the same packaging. It handles the unit effectively while troubleshooting in multiple places. This feature gives the DL389B an edge over other HVAC multimeters that don’t come with a pouch.
Having a 4000-count dual-display LCD makes it easy for the technicians to note the reading from every angle or position. Additionally, its backlight makes the unit usable at night or in dark spaces. Still, you’ll need a separate headlamp or light source, as this unit doesn’t incorporate any built-in flashlights.
Functions:
With easy switching between auto and manual ranging modes, you can use this true RMS multimeter to analyze any signal. That, too, without any limitations on how much variation it has.
Additionally, thanks to its min/max function, estimating the signal fluctuations by recording their highs and lows won’t be a difficult task.
Just like any other unit, the hold button will freeze the value for later use. Moreover, the auto-shutoff will turn off the unit after sitting idle for a few minutes.
Safety:
As the current is being measured by induction, there is no chance of overloading. Hence, there are no input current protection requirements. But don’t drop it from a high altitude, as it might not withstand the high impact.
Being backed by CAT III ratings, this unit is safe enough to use in high-power areas as well.
The UEi DL389B is capable of non-contact voltage detection. Hence, you won’t have to connect the probes to the voltage source; the multimeter will detect it on its own. Additional live line testing makes the live wire identification process simpler!
Talking about its application, apart from being the best multimeter for HVAC, it is used for troubleshooting various appliances. That includes the condensers, compressors, evaporators, duct wiring, and other related applications; one can use it for home, office, and school as well.
What to look for before buying the best HVAC multimeter
Before finalizing the best HVAC multimeter, you should compare various products from five different perspectives. These factors include the design, function, parameter measurements, safety, and last but not least, the area of applications.
Let’s discuss each one of them step by step in detail:
Measurements:
Measurements refer to how many parameters any multimeter unit is capable of measuring. A few important readings include AC/DC current, AC/DC voltage, temperature, frequency, resistance, and capacitance.
Additionally, the selected HVAC meter must also have the functionality to check diodes and transistors, with additional functionality to verify continuity between any two points in a circuit.
Design
The more advanced the design of the multimeter unit, the easier it’ll be to use the unit to take measurements. That, too, with more flexibility. A few common design elements include a kickstand, a hanging magnet, a hanging strap, a flashlight, a high-resolution LCD, and backlights.
Let’s shed some light on each feature independently!
- Having a kickstand on the backside of the multimeter allows users to put the unit in an upright position. This helps in taking the readings quickly and more comfortably.
- With a magnetic hanger, you can attach the unit to any magnetic surface to enjoy single-handed operation. Similarly, by mounting the strap alongside your belt on any wall support, you can enjoy the flexibility of hands-free operation.
- Its built-in flashlight omits the need for an additional headlamp or another light source in dark areas.
- Lastly, the LCD of the multimeter should be wide with high resolution so that readings are clearly visible. Even when viewed from an angle. It also has backlights, which will help brighten up the LCD when used in dimly lit areas.
Functions:
Another important aspect to keep in mind is how many advanced functions can be performed using the best HVAC multimeter. A few very handy features include auto/manual ranging mode, true RMS measurement capability, and min/max measurement allowance. Additionally, the data hold feature and auto-shutoff feature would also be very handy.
Let’s discuss all functions a little bit to clear up any ambiguities.
- Having both auto and manual ranging modes makes the multimeter unit equally beneficial for beginners as well as professional HVAC technicians, as auto mode, being auto-adjustable to all ranges, is suitable for beginners, but being a bit slow, most of the experienced professionals prefer to operate the unit in manual ranging mode to get quicker results!
- The true RMS feature allows users to analyze nonlinear signals with great accuracy by filtering out the surrounding disturbances. Moreover, the min/max function helps in estimating the fluctuations of any signal by recording the highs and lows of a measured signal.
- Two more advanced buttons include the data hold and auto-shutoff features. Where the first one helps in freezing the value being displayed on the screen to note it later. The later one shuts off the multimeter unit to preserve the battery. That happens after a few minutes of inactivity, especially when users forget to turn off the unit.
Safety:
Nothing matters more than the safety of users operating the multimeter unit, so make sure the unit you are going to select meets the international safety standards and is certified by international organizations as well.
Apart from certifications, a few other safety elements include overload protection, drop protection, non-contact voltage detection, and live line testing.
Let’s discuss each factor individually to develop a better understanding.
- Every multimeter has some limitations for measuring a limited value of current. If the current exceeds its maximum limit, it can not only burn the multimeter unit but also give an electric shock to the user. So, to prevent that, fused input protection is added to the multimeter units, where the fuses trip off in case of overloading. So make sure the selected unit has this functionality.
- The multimeter must be strong enough to withstand wear and tear at the job site along with the absorption of high-altitude drop impacts without breaking down. The more sturdy the multimeter’s casing is, the longer it’ll last.
- Every multimeter unit goes through different stages before final approval and launch in the market. If the unit you’re going to buy has more than one safety rating, that’ll be a plus.
Others:
A good warranty and a long-lasting, low-cost battery are two important factors that every multimeter must be backed by. They will act as a guarantee that your money is well spent!
Last but not least, check the specifications of the multimeter carefully to see the wide range of applications. If a single unit is capable of performing HVAC testing, engine repair, electronics work, circuit analysis, and residential and commercial troubleshooting, then without a single thought, go for it!
For HVAC applications, your selected multimeter unit must be waterproof in nature; otherwise, one water seepage into the multimeter unit will result in multimeter failure, which you won’t want, of course!
FAQs:
Can we use an HVAC multimeter to test HVAC appliances?
With an HVAC multimeter, you can test air conditioners, evaporators, heaters, compressors, and all other HVAC appliances.
Do HVAC multimeters need to be waterproof?
It’s not necessary, but having a waterproof HVAC multimeter makes the testing process safer, as you won’t have to worry about water tripping out of any appliance and entering the multimeter and burning it out!
Which HVAC multimeter would be best, analog or digital?
Although the analog multimeter comes at a very low price in comparison with the digital one, it misses out on a lot of more advanced features, and troubleshooting would be very slow with it. So, my recommendation would be to go with a digital HVAC multimeter.
Which HVAC multimeter is best for beginner-level HVAC technicians?
My advice would be not to settle for the less expensive unit with very limited features. Instead, buy an advanced HVAC multimeter that’ll help you during your beginning days, and you’ll get used to it during your process to become an advanced HVAC technician.
Which operating range of a multimeter is best for HVAC testing?
Although multimeter response is a bit slow in auto-ranging mode while troubleshooting HVAC ducts, setting the range manually won’t be less than a hustle. So, use the unit in auto-ranging mode for all HVAC testing.
Final Verdict
Here is the list of our eight favorite HVAC multimeters. Without any doubt, each unit will perform at its best and would be the perfect partner for any HVAC technician.
If you have been working in this industry for a while, choosing the product will be pretty easy for you. So, you can file out any unit that best meets your criteria.
However, if you are just getting started as an HVAC apprentice, then we would suggest you make a one-time investment by buying the Extech EX 530. This single unit would serve you for years to come. But if you are looking for a cheaper option, then going with the Fieldpiece HS33 would be the right decision.
Still, you are free to choose any product on your own. I hope the buyer’s guide section will definitely help you a lot in making the right decision.
Happy Testing!