Top 15 Best HVAC Vacuum Pumps To Buy 2024

If you have lived with the thought that HVAC vacuum pumps are used only by the professionals, well, you should change your opinion.

Despite the popular belief, the HVAC vacuum pumps have lots of applications and can be such a help for sewerage systems, medical applications, vehicle engines, as well as in-flight controls or coating.

Maybe you don’t want to call for an expensive professional when having to deal with making repairs, fixing some leaks, or refilling a refrigerant.

As soon as you will buy the best HVAC vacuum pump for your needs, you will figure out how useful it can be in a home and how it can help you make lots of savings.

Now, this article will show you how to use the HVAC vacuum pumps, which are the top models on the market, as well as some principles in choosing the best HVAC vacuum pumps.

Don’t waste your time and money on useless equipment, when you can do your job much easier. Follow each subheading in this article to learn more about how HVAC pumps work and how to keep money in your pocket while buying one.

The Basics of HVAC Vacuum Pumps

If you don’t know much about the HVAC Vacuum Pumps, well, in technical terms, these products are used for evacuation. These pumps are mostly taken by the HVAC technicians, so they can remove all the vapor air, and water from any refrigeration system.

Basically, a refrigeration system has two components circulating within it, and the HVAC vacuum pump ensures that oxygen, nitrogen, and water vapors are all eliminated from these systems.

Now that you know the applications of the HVAC vacuum pumps, you may figure out how useful these would be in your home. Especially if you have more than one refrigeration system in your home, this pump will save you so much maintenance costs. On top of these, the HVAC Vacuums are also easy to use.

What’s the Best HVAC Vacuum Pump?

Here are some of the highlights of each of the best HVAC vacuum pump models. If you want to find more about them, go to the full reviews down below.

• Best Overall: Kozyvacu 4.5 CFM HVAC Vacuum Pump
  “Lightweight; great design; easy to maneuver; has an oil fill port too.”
• Best Budget: Kozyvacu TA350 3.5 CFM HVAC Vacuum Pump
  “Low noise; high efficiency; great for Auto AC repair; automatic milking.”
• Best for Professionals: Robinair 15500 5 CFM HVAC Vacuum Pump
  “Best for professionals; lead detection included; A/C recovery; non-skid feet.”
• Best Residential: Hilmor 5 CFM HVAC Vacuum Pump
  “Compact; Blank-Off Valve included; Hassle-free maintenance.”
• Best for Degreasing Silicone: Kozyvacu 5CFM HVAC Vacuum Pump
  “Thermally protected motor; high torque design; low noise; great efficiency.”
• Best for Resin Infusion: Robinair 15310 3 CFM HVAC Vacuum Pump
  “Leak detector; AC recharging; AC recycling; inlet fitting.”
• Best for Refrigeration: Orion Motor Tech 5CFM HVAC Vacuum Pump
  “Upgraded hose; great aluminum protection; complete tool kit; copper motor.”
• Best for Auto AC: Wostore R22 HVAC Vacuum Pump
  “Manifold gauge; 3 color-coded hoses; very easy to grip knobs; affordable.”
• Best for Fluid Extraction: Robinair 15800 8CFM HVAC Vacuum Pump
  “2 stage pump; commercial refrigeration use; thermally protected motor.”
• Best Mini: BACOENG R12 3.6 CFM HVAC Vacuum Pump
  “Little noise; versatile; easy to carry around; 2 Manifold valves; heavy-duty pump.”
• Best Kit: BACOENG 5 Gallon 3.6 CFM HVAC Vacuum Pump
  “Silicone gasket; chamber kit; high efficiency; clear oil sight.”
• Best with Gauge: Manifold Gauge Set HVAC Vacuum Pump
  “Sight glass; durable; 3-color hose; portable; power-folding.”
• Best for Relocation: Fieldpiece VP55 5CFM HVAC Vacuum Pump
  “Run quick oil change; great evacuation system; 2 stage pump.”
• Best Industrial: Fieldpiece Vp85 8CFM HVAC Vacuum Pump
  “Heavy-duty product; great performance; consistent accuracy.”
• Best with Fittings: Across International RV8 6.9CFM HVAC Vacuum Pump
  “Dual-stage; high power; little noise; RV pumps.”

Best HVAC Vacuum Pump Comparison Chart

Have a look at the main characteristics of the best HVAC vacuum pump I have selected for today.

Top 15 Best HVAC Vacuum Pump Reviews 2022

Here are the full reviews of my favorite best HVAC vacuum pump models, with pros, cons and personal opinion.

1. Kozyvacu 4.5 CFM HVAC Vacuum Pump

(Best Overall)

If there is one product that deserves your attention, this is the Kozyvacum HVAC Vacuum Pump, which is one of the top ones on the market.

One of the greatest aspects of this Vacuum Pump is its lightweight cast aluminum design, which offers maximum durability. Moreover, if you are a novice in using this kind of equipment, don’t worry, as this product is maintenance-free.

Now, it does not matter how much work you need to do using this vacuum pump, as it won’t warm up, due to the thermal protection. The oil viewing window is a big plus too, as you can observe when you need to add some more fuel.

Key features

• Lightweight;
• Oil Fill Port;
• High Torque Design.

Product Specifications

Power	¼ HP
Voltage	120 V
Frequency	60 HZ
Oil Reservoir Capacity	280ML
Brand	Kozyvacu

Personal Opinion

This HVAC vacuum pump has most of the key features you would like to have from this kind of product.

More to know here, in this video.

2. Kozyvacu TA350 3.5 CFM HVAC Vacuum Pump

(Best Budget)

The Kozyvacu TA350 has great performance and it is one of the most reliable products on my list. If you have high standards when going for shopping, this HVAC vacuum pump will meet a wide range of service applications.

Moreover, the CFM rating is high, as such, the evacuation process will be simplified. The operation method is also easy, due to the high torque design. Don’t worry about the maintenance, as it is free as well.

For you to understand more, here are the key features, the pros, cons, and my personal experience with this product. Let’s go!

Key Features

• High efficiency;
• Low Noise;
• Perfect for AUTO AC repair.

Product Specifications

Capacity	280 ML
Power	1/4 HP
Free Air Displacement	3.5CFM
Voltage/Frequency	120V/60HZ
Brand	Kozyvacu

Personal Opinion

One of the best features of this HVAC Vacuum Pump is that it can be used for Auto AC repairs. As such, you won’t need to pay a lot for maintaining the AC systems of your cars.

3. Robinair 15500 5 CFM HVAC Vacuum Pump

(Best for Professionals)

If you know how to work with an HVAC Vacuum Pump, then this one from Robinair is what you need. This is an Economy Vacuum Pump, with great performance, but heavy-duty, so make sure you know how to use it.

This type of HVAC vacuum pump is perfect for air conditioning, as well as for refrigeration services. The factory rating is 35 microns, while the oil reservoir is big enough to store 7.5 ounces of oil.

Now, don’t worry about the air displacement either, as it is free. All in all, this pump has all you need to get the job all done.

Key Features

• Leak Detection;
• A/C Recovery;
• Economy Vacuum Pump;
• Non-Skid Feet.

Product Specifications

Voltage	115 Volts
Air Flow	5 CFM
Oil Capacity	7.5 ounce
Vacuum Pump	2 stage
Brand	Robinair

Personal Opinion

If you are a professional and you need performant tools in your working case, consider this one. I was impressed by its power and speed.

Here is more to know in a comprehensive video.

4. Hilmor 5 CFM HVAC Vacuum Pump

(Best Residential)

If you don’t want to call for professional help every time you have just a little problem with your AC or refrigerator, then look at this Hilmor Vacuum Pump. Everything you need to do, from installation to repairs and maintenance, this Hilmor will be good for everything.

Don’t worry about the maintenance either, as this Hilmor product is hassle-free. The oil changes are very easy to do as well, without losing any of the vacuum capacity.

The sight glass is very helpful considering this direction, as it will help you notice the oil level every time you will be using the vacuum pump.

Key Features

• Hassle-free maintenance;
• Compact design;
• Blank-Off valve.

Product Specifications

Amperage	7.5 Amps
Voltage	120 Volts
Motor speed	3440 RPM
Oil capacity	11 oz.
Included Components	Vacuum Pump 5 CFM
Vacuum Pump	5 CFM
Brand	Hilmor

Personal Opinion

The Hilmor Vacuum Pump is the definition of an easy-using vacuum pump. This product is designed for making the process of oil changing a lot easier and efficient, and you can see this from the very first use.

5. Kozyvacu 5CFM HVAC Vacuum Pump

(Best for Degreasing Silicone)

This type of HVAC vacuum pump is perfect for domestic jobs, such as cleaning the AC or the refrigerator. Now, while the AC systems will mostly require 500 microns, the Kozyvacu TA500 will deliver a better capacity than 40 microns.

This way, you will be sure that your vacuum pump will do its job perfectly. Another big plus of this model is the Die-Cast Aluminum housing, which makes the entire item a lot more lightweight, as well as more durable. Last but not least, maintenance is free.

Ok, now that you know some of its advantages, let’s go straight to the technical features and personal opinion.

Key Features

• High torque design;
• Thermally protected motor;
• Low noise;
• High efficiency.

Product Specifications

Power	½ HP
Voltage/Frequency	120V/60HZ
Oil Reservoir Capacity	380 ML
Air flow	5 CFM
Brand	Kozyvacu

Personal Opinion

This is a professional HVAC vacuum pump to have, as it comes with a thermally protected motor, and promises to be very durable in the long term. The high-speed evacuation is a big plus, as well as the capacity to use the product for lots of DIY projects.

6. Robinair 15310 3 CFM HVAC Vacuum Pump

(Best for Resin Infusion)

If you are looking for a vacuum pump for other residential jobs, such as resin infusion, look at this Robinair HVAC Vacuum Pump. This is a single-stage vacuum pump, perfect for multiple tasks, such as air conditioning or refrigeration service.

The rotary vane is a single-stage one. Don’t worry about the airflow, as it has been designed to feature an inlet fitting and also to prevent oil backflow.

The Robinair HVAC Vacuum Pump has all the features needed to keep the pump cooler and to extend its life as long as possible. Let’s move on to the most important features to keep in mind, the pros and cons.

Key Features

• Leak detection;
• AC recycling;
• AC recharging.

Product Specifications

Power	1/4 HP
Air Displacement	3 CFM
Oil Reservoir Capacity	8.5 ounce
Voltage	110 Volts
Brand	Robinair

Personal Opinion

I really liked this product, mostly for the capacity to handle lots of tasks, from maintaining and servicing an air conditioner, to resin infusion.

This youtube video will clarify most of my ideas.

7. Orion Motor Tech 5CFM HVAC Vacuum Pump

(Best for Refrigeration)

Always good to have in your home, the Orion Motor Tech Vacuum Pump is mostly best for refrigeration. This is why it comes with all the features you would need and lightweight cast aluminum for the perfect protection.

What makes this product unique is that it has a high-quality motor, as well as a high volume cooling fan, so it won’t overheat during your jobs. You will always know when you need to add some more oil, due to the oil viewing windows.

Don’t even worry about the maintenance, as the support you get is real and friendly. As such, whenever you will need advice, the support team will offer it.

Key Features:

• Upgraded Hose;
• Strong Copper Motor;
• Complete Tool Kit.

Product Specifications

Power	1/3 HP
Air Displacement	5 CFM
Oil Reservoir Capacity	250 ml
Ultimate Vacuum	5 PA
Brand	Orion Motor Tech

Personal Opinion

As soon as you did not understand some steps to make it work, the customer support from Orion Motor Tech was very kind to offer it. The machine is great, especially for domestic jobs.

8. Wostore R22 HVAC Vacuum Pump

(Best for Auto AC)

If you are tired of going to the auto service for ordinary jobs, such as cleaning the Auto AC, then you should invest in an HVAC vacuum pump, such as this one from Wostore. Very easy to use, this offers refrigerant charging and a burst pressure around 4000 PSI.

Moreover, you have different colored gauges, one blue, and another red one, that are large enough for easy viewing. The charging hose is long enough so you can do your job comfortably.

If you want to know more about this product, keep reading the down below extra information.

Key Features

• Manifold gauge;
• 3 color-coded 5 FT long service hose;
• Easy-to-grip knobs.

Product Specifications

Max working pressure	800 PSI
Hose length	5 ft.
Sight Glass	Yes
Burst Pressure	4000 PSI
Brand	Wostore

Personal Opinion

If you are looking for the best vacuum pump for auto AC, this one’s for you, Really affordable, easy to use, and also very safe.

9. Robinair 15800 8CFM HVAC Vacuum Pump

(Best for Fluid Extraction)

This is by far a heavy-duty HVAC vacuum pump, as it is perfect for massive fluid extractions. Now, if you know you need a pump that is perfect for commercial refrigeration, maybe you have a restaurant, for instance, go for this one.

Although it is much more expensive than other products on my list, it is worth the money. The 2-stage rotary vane design, as well as the non-skid feet, are just some of its main features. The oil capacity is large enough for the motor to work a longer period of time.

Key Features

• 2 stage pump;
• Commercial refrigeration use;
• Thermally protector for the motor.

Product Specifications

Power	1 HP
Air Displacement	8 CFM
Oil Reservoir Capacity	18.6 ounce
Voltage	115 Volts
Brand	Robinair

Personal Opinion

If you need an HVAC vacuum pump that can deal with commercial usage, this one will satisfy your needs.

Hope you find this video helpful too.

10. BACOENG R12 3.6 CFM HVAC Vacuum Pump

(Best Mini)

If you don’t want to carry lots of tools with you whenever you have a vacuuming job, you should consider investing in a mini HVAC vacuum pump, such as this one from Bacoeng.

This tool comes with all the necessary tools so you can repair any AC system. Moreover, you don’t even have to worry about buying some HVAC gauges that will not fit the applications you want to fix.

This vacuum pump has a multi-function gauge, that will help you do lots of jobs, on your DIY residential tour. I have tested this product multiple times, so here are the features I found very important to know about.

Key Features:

• Little noise;
• 2 valves Manifold;
• Heavy-duty pump.

Product Specifications

Power	1/4 HP
Air Displacement	3.6 CFM
VAC	150 Micron
Hose pressure	800-4000 PSI
Brand	Bacoeng

Personal Opinion

This HVAC vacuum is not only very lightweight but very versatile when it comes to the applications you want to use it for.

11. BACOENG 5 Gallon 3.6 CFM HVAC Vacuum Pump

(Best Kit)

This is a full kit, perfect for multiple types of jobs. For instance, if you have some hobby project where you need degassing silicone, or you just want to repair your AC, the Bacoeng Vacuum Pump comes with all the instructions you need for perfect usage.

The motor that comes with this vacuum pump is powerful enough to deal with lots of applications, so don’t worry about the complexity of your projects. Down below, you will find every detail you should know about this pump and many more.

Key Features

• Silicon gasket;
• Chamber kit;
• Ultimate pump vacuum.

Product Specifications

Power	1/4 HP
Air Displacement	3.6 CFM
Oil Capacity	225 ML
Voltage	110 V
Brand	Bacoeng

Personal Opinion

This is a complete kit, perfect to have at home whenever you have difficult jobs to do.

12. Manifold Gauge Set HVAC Vacuum Pump

(Best with Gauge)

This Manifold Gauge Set is perfect to use if you want to prevent the leakage. The three-color hose connector of HVAC is made of nylon, which means they have to wear resistance and are able to prevent any leakage that might appear.

Moreover, this set is perfect to use for home A/C equipment, and also HVAC. The hose is also very durable and flexible, so you will be able to use it a long time ahead. If you have any queries, you have full professional instructions, so all the details are right at your hand.

As such, you don’t need a professional repairman anymore, as you can start repairing and recharging the refrigerant all by yourself.

Key Features:

• Sight glass design;
• 3-color hose;
• Durable features.

Product Specifications

Length of Hose	59 inch
Weight	6.91 pounds
Hose	3 color hoses
Pressure	500-800 PSI
Brand	INCLAKE

Personal Opinion

Make sure you carefully read all the instructions, this way, you will have no problem in using this professional kit.

13. Fieldpiece VP55 5CFM HVAC Vacuum Pump

(Best for Relocation)

This vacuum pump is a 2 stage model that has an air flow of 5 CFM. The oil is very easily changed due to its RunQuick changing system.

With the help of this vacuum pump you will be able to make the evacuation easier and faster than with other models. Furthermore, it has a wide base that will prevent the possible oil spill.

Key Features:

• Run quick oil change;
• 2 stage pump;
• Great evacuation system.

Product Specifications

Air Displacement	5 CFM
Ports	4 inline ports
Brand	Fieldpiece

Personal Opinion

Although it is a quite heavy and expensive model, this HVAC vacuum pump is powerful enough to handle any kind of job. Moreover, the oil changing process is faster than ever.

Here is a video demonstration.

14. Fieldpiece Vp85 8CFM HVAC Vacuum Pump

(Best Industrial)

If you need a heavy-duty HVAC vacuum pump, make sure you buy a Fieldpiece one. The brand is popular for its resistant, two-stage vacuum pumps, with a quick oil change. The evacuation system is also very performant, as such is the motor, a model of VP85.

The huge oil reservoir is also a big plus, so you won’t need to constantly fill the tank. You can clearly see the oil level and the condition of it too. Make sure you keep reading, so you can figure if this heavy-duty model is the right one for you.

Key Features:

• Heavy duty design;
• Consistent accuracy;
• Great performance.

Product Specifications

Stage	2 stage
Air Displacement	8 CFM
Brand	Fieldpiece

Personal Opinion

A heavy-duty model of the HVAC vacuum pump, that I recommend to the professionals. Otherwise, it will be too difficult to use.

15. Across International RV8 6.9CFM HVAC Vacuum Pump

(Best with Fittings)

For those who are not afraid of using a really heavy-duty HVAC vacuum pump, this one is by far one of the most performant ones. The Across International Vacuum Pump is capable of delivering high or low power, without being too noisy.

The applications are really versatile, however, I recommend the users to read the manual of this product carefully.

This ultimate vacuum is approved to UL and CSA standards and comes with all the key features that make this kind of product a top one. Read about my personal experience down below.

Key Features:

• Dual-stage;
• High capacity;
• RV pumps.

Product Specifications

Motor Power	60 HZ
Oil capacity	0.8 quart
Color	Grey
Air flow	6.9 CFM
Material	Stainless Steel
Brand	Across International

Personal Opinion

There is nothing you could wish from a vacuum pump that you cannot find at this product. If you have enough experience with this kind of product, and also a generous budget, give a chance to this vacuum pump.

HVAC Vacuum Pump Buying Guide

Before making the decision of purchasing the best HVAC vacuum pump, make sure you analyze this buying guide. Here you have all the details you need to know in order to make a smart purchase.

Analyze these features in order to find the right model and the best price according to your needs.

Pumping Capacity

One of the most important factors when choosing the HVAC vacuum pump is the pumping capacity. Or how the HVAC pump can create that vacuum. This is a simple measurement, that is rated in cubic feet per minute, or CFM.

Some might say that you must do some complicated maths to find this value, but don’t get overwhelmed. Actually, the CFM needs to be larger than the unit size you are working on.

Most of the vacuum pumps have the average vacuum levels exactly where they should be. Just to make sure, you can look at the AC tonnage, then add just 2. This is the simple math you should do.

The usual residential requirements will be somewhere between 4 and 6 CFM. While the heavy-duty and the commercial ones should boost up to 8 CFM.

Motor Power

When it comes to motor power, the single-stage vacuums will work very well and will cover most of the usages. If there is something to recommend, I would go for the dual-stage or the 2-stage motor.

The second stage will help you create more power, so the vacuum will be stronger in the process of removing the impurities.

Vacuum Level

One more feature to look for is the micron rating. The micron rating refers to the vacuum level that the pump produces. The perfect vacuum should be zero microns. But while you will be repairing simple things in the house, you will not need the perfect vacuum.

Now, just to be sure, look for a micron rating that is at least 500. The ideal rating for a house is 500-700 micron rating.

Weight

This is one of the most usual concerns people have regarding the HVAC vacuum pumps. But just think about it. While using the vacuum pump, you don’t have to carry it a lot, as it will work while standing on the floor.

However, it’s good to have a lightweight one, in order to store it more easily.

Noise Level

As you might already know, vacuum pumps are not the quietest products on the market. However, there are some that don’t make so much noise. If you are working indoors, noise is a real problem.

But as long as you keep the unit in the garage, this is not anymore an issue and you can wear some earplugs to help you.

Oil Drainage System & Plug

While using the rotary vane systems, make sure you make the necessary oil changes. Now, consider that you must do this refilling once in a while. This is why it is important to pay attention to an accessible oil plug, as well as an easy to drain system.

Sight Glass

The sight glass refers to a special system that lets you see the oil level, as the rotary vane pumps will often need additional oil to run the motors. If the model of the HVAC vacuum pump you want to buy does not have this sight glass, consider another one.

Additional Features

Despite the previous categories, there are some other features to consider when purchasing an HVAC vacuum pump. For instance, look for:

• Anti-suck back: this feature is desirable, as it will prevent the air or liquids from entering the system as soon as you shut off the pump.
• Various sized intake fittings
• Isolation valves, for controlling where the vacuum stops
• Digital screens
• Bluetooth connectivity

FAQs

I have prepared for you the most frequently asked questions regarding the best HVAC vacuum pump models. Check them out.

My Top Pick

When owning an AC system, it is crucial to clean the water and moisture from inside this unit. The manual process can take a very long time, and the results will not be the expected ones.

As such, think about the top options of HVAC vacuum pumps I have presented today.

Now that you know that my top pick is Kozyvacu 3.5 CFM HVAC Vacuum Pump and also that the major features and the top options on the market, it will be so simple to make a wise purchase.