Automotive AC Vacuum Pumps

If you are a GOT fan, then you know the term ‘Winter is Coming.’


Summar is scarier than winter if you are not well prepared for it. A well-maintained air conditioner is an essential part of today’s’ life, especially in summer though we also use it in winter but in the opposite way.

The primary function of an AC to provide you with clean, fresh, and cold air without hiccups.

Now, after installing an AC, our primary job is to maintain the system while serving. One of the main tools we should have for this purpose is an AC Vacuum Pump that enhances the functionality of an AC by removing the excessive moist air from the refrigerant.  This way, we also get more life of an AC with desired optimal functionality.

Now I will drive you through the complete buying guide for the AC Vacuum pump.


Here’s top products we picked out through amazon you would be interested in depending on your budget…

Robinair (15300) VacuMaster Economy Vacuum...
3 CFM free air displacement; factory rated to 35 microns; 1/3 HP, 115V/60Hz thermally protected motor
Robinair 15800 VacuMaster Economy Vacuum Pump...
8 CFM free air displacement; factory rated to 40 microns; 1 HP thermally protected motor; 115V, 60 Hz
Robinair (15500) VacuMaster Economy Vacuum...
5 CFM free air displacement; factory rated to 35 microns; 1/3 HP, 115V/60 Hz thermally protected motor

Let us see my top-rated vacuum pumps with technical details, and most common questions are answered at the end.

Here we go…

The Best Automotive AC Vacuum Pumps | Top Rated

I am going to provide you with a list of these pumps and make sure to read all of these and then get one that meets your requirements and the specification.

#5 HFS R Vacuum Pump Double Stage

Price at Amazon!

It is 12 CFM that is cubic feet per minute and is quite a higher number. It is a double stage as most of the pumps are nowadays. This pump is extremely useful in refrigeration repair, printing machinery, Vaccum packing, hot forming plastics, etc. This one is of modern design and technology.

These are the major points why we choose this AC Vaccum Pump to put in the list…

Features I Like!
  • A pressure of 2 Pa with 15 microns.
  • A powerful pump with Power 1HP.
  • A commonly used port size that is 1/4″  for inlet and 3/8″ SAE.
  • Nonslip handle for a better grip and safety.
  • It is also available in Stage 1 & different CFM’s 3, 6 & 12.

#4 VIVOHOME Dual Stage Rotary Vane HVAC Air Vacuum Pump

Price at Amazon!

VIVOHOME is a  1/2 HP and 5 CFM Dual Stage Rotary Vane HVAC Air Vacuum Pump. An aluminium alloyed outside casing makes it light and good looking. You will get a free vacuum oil bottle with this package. It is highly efficient and shallow noise when working and no worries about the sleepy surrounding.

These are the major points why we choose this AC Vaccum Pump to put in the list…

Features I Like!
  • A gift for a DIYer as you can self diagnose the AC systems.
  •  It maintains air conditioning systems by efficiently removing moisture before refilling the refrigerant.
  • The best for automotive air conditioning, HVAC work, refrigeration
  • If you need a high vacuum pull from a compact pump, then this is undoubtedly for you.
  • It has an ergonomic grip on the handle that is non-slip and easy to handle with bare hands.

#3 JB Industries DV-6E Eliminator 6 CFM Vacuum Pump

Price at Amazon!

JB Industries DV-6E Eliminator vacuum pump got thermal overload protection that makes it a heavy-duty pump. A glass window makes sure to check the oil level with ease. It got a tough and hard chrome plated case.

These are the significant points why we choose this AC Vaccum Pump to put in the list…

Features I Like!
  • American made and stand for toughest jobs.
  • Thermal protection makes it reliable and gives a longer life.
  • Easy to transport as no oil slippage because of a tethered cap.
  • The glass window helps to see the oil level and quality.
  • It has 1725 RPM capacitor start motor

#2 MASTERCOOL 90066-B 6 CFM Single Stage Vacuum Pump

Price at Amazon!

MASTERCOOL 90066-B 6 CFM is a Single Stage vacuum pump that gives you an ultimate vacuum up to 80 microns. This is something really amazing with 6 CFM air displacement. It has a high volume fan for its thermal cooling system.

These are the significant points why we choose this AC Vaccum Pump to put in the list…

Features I Like!
  • Single-stage with an ultimate efficiency up to 80 microns.
  • 6 CFM with Single-stage vacuum pump.
  •  Motor with on/off rocker switch
  • Glass to monitor oil level and quality.
  • Easy access to oil drain valve

#1 FJC 6912 Vacuum Pump 5.0 Cfm

Price at Amazon!

FJC 6912 Vacuum Pump 5.0 Cfm is a single-stage but has an amazing efficiency with a nominal price. If you are looking for optimum value to your resources, then this one is for you.

These are the major points why we choose this AC Vaccum Pump to put in the list…

Features I Like!
  • Single-stage with an ultimate efficiency up to 75 microns.
  • 5 CFM with Single-stage vacuum pump.
  •  The motor of 1/3 HP and 1725 RPM
  • Inexpensive and the best for a DIYer.
  • A non-slip handle to make it safe.
  • It has 12-ounce oil capacity

Wrapping it Up

When buying a Vaccum pump then make sure to understand your project and what capacity are you looking for after that make sure to buy any reliable as it may be a risky call if you get a cheaper one and end up with a disaster in terms of safety I suspect. Always read the instructional manual before performing any job. Check the voltage well also.

Video Guide

FAQ’s About AC Vaccum Pumps

What is CFM?

CFM stands for Cubic Per Minute. It is a measurement of velocity at air flows in or out of space. This is normally used for cooling units like AC pumps.

What is different in Stage 1 & Stage 2 vacuum pumps?

The two-stage pump means that it has two rotors and two sets of vanes. If you want a deeper vacuum, then you can go for it; otherwise, Single Stage is sufficient. If you area DIY, then a single stage is enough as it can create up to 75-micron vacuum, and you usually need less than 500 microns what we say an efficient vacuum. Stage 2 can go up to 25 microns.

What is Micron?

It is a unit of measurement from a perfect vacuum. One micron is equal to 1/25,400 of an inch – a linear increment.

How an A/C vacuum pump work for cleaning the HVAC system?

It basically reduces the pressure in the system, and ultimately the water boils at this lower pressure and turns into a gaseous state. After this, it runs from lower pressure to higher demand. We call it suction, but it is not but a push because of the pressure gradient.

What happens if you don’t vacuum your AC system?

You will not get optimal performance if you are not vacuuming before filling out the refrigerant into the system. We reduce the pressure in the system so that any suspended water particles boil away.

What happens if air gets in the AC system?

It traps and reduces the condenser surface area making it less efficient.

What happens if too much oil in the AC system?

It will reduce the cooling efficiency as it will get coated at the inner walls of condenser coils. It will ultimately affect the heat dissipation and eventually down the cooling efficiency.

How many microns is a good vacuum?

It is 500 microns for a complete vacuum in the industry. But some people will do it at a much lower level. A right pump can give you 50-100 micron easily. It is quite a good range for an AC refrigerant.

Can you pull a vacuum with a leak?

No, not at all. By the way, don’t try it.

What are the other uses of vacuum pumps?

You can use it for Milking, food processing, degassing and Auto AC Refrigerant Recharging.

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