Best AC Vacuum Pumps 2021

Are you interested in buying the best AC vacuum pumps, but don’t know the right step to take? This guide has come to your aid. In this guide, we will review the best AC vacuum pumps. Read through this guide to find the best AC vacuum pumps.

What’s the Purpose of a Vacuum Pump?

Vacuum pumps are part of one of the final processes in the repair process. After you’ve diagnosed and repaired any leaks or other issues in the system it is time to recharge. Before recharging you want to make sure the system is free of any unwanted gasses, air, or water.

If these were to remain in the system, it would turn the oil it runs on into sludge and leaves behind damaging impurities.

Unlike an angle finer, The draw on a vacuum pump is usually broken down into its “CFM,” or Cubic Feet per Minute. To estimate what your CFM needs, look at the tonnage of the systems you work on. Take the square root of that number and you’ll get the approximate CFM you need to have to work with that system.

Typical residential systems need 4-5 CFM, while commercial and rooftop systems generally need as much as 6-8 CFM.

Types of Vacuum Pumps

Vacuum pumps come in three types: vacuum generators, diaphragm pumps, and rotary vane pumps. Additionally, they can be either one- or two-stage. Both use one stage to establish a vacuum. Two-stage pumps have a second vacuum stage for a greater draw and a tighter vacuum. A tighter vacuum means fewer impurities in the system.

The pumps we’ll focus on are all rotary vane pumps. Unlike the other pumps, rotary vane pumps are oil-based, however, this cannot be said about the blades of a track saw. They use oil to pump a vane which creates the vacuum. These pumps are inexpensive and create the best vacuum (up to 99.9% in many models).

But they must have their oil changed regularly to work. Although the oil can be an inconvenience, these pumps are the most effective for extended use.

AC VACUUM PUMPS BUYER’S GUIDE

Capacity

As we are discussing a pump, the pumping capacity is one of the most important things to consider.  The capability of the pump to create a vacuum, the measurement comes in cubic feet minute or CFM. You can estimate the number after a detailed calculation.

You have to take the ambient temperature with other measurements like constant flow rate, pressure, etc.

The fact is, nobody wants to go through complicated calculations before getting a pump, and you don’t have to. Still, there is some math, but it is easy. Just the CFM rating of the pump needs to be greater than that of the unit.

Fortunately, all the vacuum pumps will eventually reach the required vacuum level, but if you want to reach that point immediately, then check out the Ac tonnage and add 2. If you are working on a 2 ton AC unit, then get a pump with 4 CFM rating.

Vacuum Level

Another rating you need to consider is called the Micron rating. This rating indicates the vacuum level produced by the pump. No vacuum at sea-level will have a micron measurement of 760,000. Zero is the perfect vacuum. But you are not required to have a perfect vacuum for your pump.

Look for a pump with a micron rating of at least 500. Higher is good. But you may also find reaching a higher vacuum level is difficult. In that case, remember that if you are getting one for home use then, 500 to 700 micron is enough. For professional use, you may want to go higher.

Weight

The weight is an important factor but not the most important one. You will be not be required to hold these machines; so, it doesn’t matter much. But if you are carrying them to your work, then you might want a light model.

Motor Power

There are different pump types available. But there is one thing that is important for all types of pumps that is the power of the motor. Single-stage motors are mostly good enough, but you will also find pumps using 2-stage motors. These types of motors are more powerful, like the power passed from one charged battery to another low battery, using a jumper cable, faster, and stronger.

So, if you are getting a pump for home use, then single-stage motors are good enough, but for professional use, you should get a pump with a 2-stage motor, unlike garden carts that require just manual power.

Sight Glass

If you know about rotary vane pumps then, you know that they run on oil. These pumps come with a sight glass so that you can monitor the oil level. So, if you are getting a rotary vane pump but it doesn’t have a sight glass, then select a different model.

Without the sight glass, you will fail to know if you are running low on oil. And if you fail to replace the oil in time, then it may cause significant damage to the pump itself. So, just pay a few more bucks and get a model with sight glass.

Noise

Pumps are associated with noise; they are not a quiet piece of machinery. If you are using it outside, then noise shouldn’t be an issue, but it can be a bother if you are using it inside. So, if you are getting a pump for inside use, then get one with low noise or buy earplugs.

Oil System

The rotary vane pumps require oil changes from time to time. The sight glass will help you to determine the oil level, but you will also need an accessible oil plug to drain the machine easily.

BEST AC VACUUM PUMPS

NAMES FEATURES WHERE TO BUY
FJC (6909)

B0017R95DI

Air Displacement 0 CFM rating

Operation Single-stage

Oil Capacity 5 oz.

Factory Rating 75 Micron Rating

GET IT ON AMAZON
Yellow Jacket 93580 Superevac

B000R8JVIM

Heavy-duty motors and bearings

Heavy-duty steel handle with lift hook for well-balanced carrying

Tethered port caps stay with the pump

Metal with rubber overlay base for stability

Made in the USA

GET IT ON AMAZON
Kozyvacu TA350 KZTA350001

B01N6IOBWF

High Efficiency and Low Noise

ON/OFF Switch Non-Slip Cushion Handle

Foam molded packing for safe transportation.

GET IT ON AMAZON
XtremepowerUS

B00SZ4QFW0

3 cubic feet per minute airflow rating

The pump power rating of ¼ HP

1-year long warranty

Offers an oil bottle in the box

GET IT ON AMAZON
ZENY 3.5 CFM Economy Vacuum Pump

B012CFTYX4

5 cubic feet per minute airflow rating

The pump power rating of ¼ HP

30-day long warranty

Comes with a shockproof and wearable base

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Robinair (15500) VacuMaster

B000O1C47M

Displaces 40L per minute

Finned aluminum shell

Large (220mls) oil reservoir

Space-saving design

Dependable 2-stage rotor

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Bestauto Vacuum Pump 12CFM 1HP Vane

B07CNYPYL4

Air Displacement 0 CFM rating

Operation Two-stage

Oil Capacity 9 oz.

Factory Rating   25 Micron Rating

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Fieldpiece AC Vacuum Pump

B07CDVVMF4

Efficient inline ports

Auto-off safety feature

Quiet/smooth operation

Easy to set up and use

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MASTERCOOL 6 CFM Single Stage Vacuum Pump 90066-B

B01H5O66QA

Ultimate vacuum.

Higher CFM.

A single stage vacuum pump

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NewPosition 3.0 CFM Single-Stage 5 Pa Rotary Vane

B07HC94RRG

Shipping weight – 12.85 pounds

Voltage – 110 volts

Item dimensions – 14.4 by 11.5 by 6.8 inches

Power -1/4 horsepower

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FJC (6909)

B0017R95DI

Two-stage Performance using Twin-Port Technology. FJC’s lightning-fast vacuum pump designs remove destructive moisture and non-condensable gases.

PROS CONS
Lightweight, It works like a 2-stage but doesn’t have the micron rating of one.
durable construction for easy handling No isolation valve
long-life use.

Yellow Jacket 93580 Superevac

B000R8JVIM

The Yellow Jacket 93580 SuperEvac 1/2 hp Single Phase Pump has an isolation valve for oil changes without losing vacuum in the system. The Yellow Jacket 93580 is supplied with the built-in vacuum indicator gauge.

The Yellow Jacket 93580 has a wide-mouth oil reservoir port for easier, cleaner filling. The lower the micron rating – the better the pump performance. The 93580 SuperEvac Vacuum Pump is a highly efficient, two-stage rotary vane oil-sealed pump field-rated at 15 microns or better.

PROS CONS
Isolation valve to change oil without losing vacuum Heavy unit for everyday use
High-grade metal and brass for durable construction May not be suitable for DIYers
No-slip bottom for stability

Kozyvacu TA350 KZTA350001

B01N6IOBWF

The Kozyvacu® TA350 has been performance and reliability tested to meet Kozyvacu’s high standards. Its power and capacity meet for a wide range of service applications, it delivers a high CFM rating for fast thorough evacuation.

PROS CONS
Multiple non-HVAC uses No built-in vacuum gauge
Lightweight and easy to move
Twin inlet ports for Flare and ACME

XtremepowerUS

B00SZ4QFW0

XtremepowerUS is a brand of power tools based out of the US that happens to be making a wide range of products, including an AC vacuum pump that is quite affordable.

This XtremepowerUS R410A R134 AC vacuum pump is yet another option that you should consider if you are on a budget. Just like other budget options, you get a pump power rating of ¼ HP with this AC vacuum pump. Although, its 3 CFM airflow rating is a bit low and lesser than most other options out there when it comes to AC vacuum pumps.

PROS CONS
A built-in high volume fan allows continuous use. Gauges for vacuum are on the manifold set.
Kit includes everything you need for HVAC vacuum No isolation valve.
Durable design and construction

ZENY 3.5 CFM Economy Vacuum Pump

B012CFTYX4

Zeny 3.5 CFM is a single-stage pump having a housing of heavy-duty aluminum alloy. You will enjoy a great amount of durability after installing this pump in your home. Furthermore, the weight of this pump is less than 12 pounds making it easy to move.

There is an inbuilt fan installed in this pump that prevents the overheating so that it can work for a longer duration. The pump as a capacity of evacuating air at a rate of 3.5 CFM that is enough for HVAC system applications.

PROS CONS
Offers decent build quality Only a 30-day long warranty with the pump
The affordable price tag for users on a budget
High value for money due to decent performance output

Robinair (15500) VacuMaster

B000O1C47M

Designed for refrigeration and air conditioning applications, this vacuum pump with a 2-stage rotary vane design is both powerful and very efficient. The factory rating of the vacuum pump is 35 microns, and it can displace 140 liters in a single minute.

This 5 CFM vacuum pump is also compact, even though it weighs slightly more than other models in the market (21 pounds). The unit comes with an oil reservoir that can hold 220 ml of oil and a filling port that you can access from either side of the pump.

For efficient oil drainage, the drain valve comes angled. There is an inlet fitting made with maximum airflow to prevent oil flow back.

To keep the pump cool, its aluminum case has fins that improve heat and air transfer. The cooling features are ideal for places where the vacuum pump stays working for long hours.

PROS CONS
Ideal for the professional HVAC technician Doesn’t have built-in gauges
Rugged enough for daily use Becomes hot to the touch quickly
High CFM (5.0) for most application usages
35-micron rating to remove almost all impurities

Bestauto Vacuum Pump 12CFM 1HP Vane

B07CNYPYL4

When choosing between power, dependability, and price, the best mid-range model vacuum pump may be in order. While the Bestauto vacuum pump rounds out this HVAC vacuum pump review list, it isn’t the bottom of the bunch.

With an impressive 9.0 CFM, this 2-stage vacuum pump delivers where it matters. It is a large unit, with some weight behind it, but that comes with the full 1 horsepower motor and large oil tank (capacity of 16 ounces).

A perfect vacuum at sea level is 0 microns, and this guy will pull 25 microns at an elevation above sea level. With a solid vacuum and impurities removed, you can rest assured that your refill will be pure.

PROS CONS
Rated to 25 microns for clearing out most line impurities Difficult to find replacement parts
Large CFM rating (9.0)
Ideal for daily or constant use

Fieldpiece AC Vacuum Pump

B07CDVVMF4

Fieldpiece VP85 is an exceptional all-American vacuum pump manufactured by the best minds in this industry. Compared to many other vacuum pumps, the fieldpiece stands out because of its build. The materials used on the body are heavy-duty durable and usable parts that make the construction sturdy and consistent. The pump delivers accurate and efficient performance every time.

Other features that make the pump stand out are the inline ports that help to deliver more efficiency than that of many other pumps. The pump is also part of the newer and more advanced new generation vacuum pumps that use the run quick oil change system.

This new feature ensures that the system functions efficiently at any given time. The feature requires an oil change for every new evacuation. For even smoother operations, the pump comes with an on-off switch. It is ideal for DIY home projects.

PROS CONS
Most powerful AC vacuum pump in this article Quite an expensive AC vacuum pump model
Highly durable and reliable option with a long warranty and great build quality
Ideal for heavy-duty usage while cleaning AC units

MASTERCOOL 6 CFM Single Stage Vacuum Pump 90066-B

B01H5O66QA

Here at the top 9th, we have another high-quality air conditioner vacuum pump from MASTERCOOL. With the capacity of airflow rate at up to 6CFM; which is amazingly higher than the typical vacuum pump in the market.

Such high volume means that the vacuum pump can effectively pump the cool air; which makes air conditioner super functional. Besides, this vacuum pump also uses the vapor oil that can be easily removed to check and refill; so the maintenance of it is super simple and convenient.

PROS CONS
Durable quality. Isn’t a heavy-duty pump
Low price.
High performance.

NewPosition 3.0 CFM Single-Stage 5 Pa Rotary Vane

B07HC94RRG

When it comes to efficiency in performance, NewPosition single-stage 5 PA rotary vane economy pump takes the price. It owes the distinction to its direct-drive motor, which permits easy start to boot with the impressive cooling fan for heat regulation. It is lightweight courtesy of its aluminum casing, which, apart from improved portability, also works for it in the durability aspect. Moreover, it is low on noise production, with a flow rate of 3 CFM that is fit for an A/C unit for a medium to a large room.

PROS CONS
Humanized design and a precision machine. none
Cast aluminum construction for maximum durability.
Multi-layer filter meet all user requirements.

CONCLUSION

An AC vacuum pump is a necessity for every AC technician, and there are different types of these pumps available with different specifications. Our team has done an extensive research to shortlist the best AC vacuum pumps that are there online. All you have to do is go through them and understand the products before comparing and selecting one for your job.