Best Ac Vacuum Pump 2 Stage (2026): 4 Pumps Compared
Dual stage AC vacuum pumps compared by flow rate, vacuum depth, motor, fittings and kit contents, for evacuating car and home AC systems.
On this page
Top picks at a glance
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- 1
Best OverallVIVOHOME Gauge Kit9.6/10View on Amazon - 2
Best A2L PickVEVOR 5 CFM 2 Stage9.6/10View on Amazon - 3
Best Bare PumpVIVOHOME 5 CFM Pump9.6/10View on Amazon - 4
High Flow PickOMT 9 CFM 2 Stage9.5/10View on Amazon
When the car air conditioning stops blowing cold and the system needs evacuating before a recharge, the best ac vacuum pump 2 stage is the pump that pulls a deep vacuum and holds it. We compared dual stage vacuum pumps by flow rate, vacuum depth, motor, fittings, kit contents and stated safety features, using only what each listing publishes.
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Quick picks
- Best Overall VIVOHOME Gauge Kit: Pump, manifold gauges, hoses and leak detector in one kit Check price on Amazon
- Best A2L Pick VEVOR 5 CFM 2 Stage: A2L motor, 3 inlets and over 2 hours continuous running Check price on Amazon
- Best Bare Pump VIVOHOME 5 CFM Pump: 5 CFM pump with oil bottle, viewing window and drain valve Check price on Amazon
- High Flow Pick OMT 9 CFM 2 Stage: 9 CFM pump with 1.5 micron vacuum and 12.8 oz oil reservoir Check price on Amazon
The picks
VIVOHOME 1/2 HP 5CFM 2 Stage AC Vacuum Pump and 4
A dual stage vacuum pump kit with a 4-way manifold gauge set, 4 color-coded 5 foot hoses and a leak detector, rated at 5 CFM.
Pros
- 5 CFM flow with vacuum down to 0.3 Pa in 3 minutes
- 4-way manifold gauge set with plus or minus 1.6 percent accuracy
- 4 color-coded hoses in 3 reinforced rubber layers with leak-proof seals
- Anti-backflow valve plus motor current protection
Cons
- No warranty term is stated
- 29.5 pounds, the heaviest here
- No UL, ETL or CSA listing is stated
- Leak detector is named only in the title
VEVOR 5 CFM 2 Stage Rotary Vane Vacuum Pump 1/2 HP
A 5 CFM dual stage rotary vane pump with a 1/2 HP pure copper motor, three inlets and overheat protection.
Pros
- 5 CFM with a 20 micron vacuum
- Three inlets: 1/4 SAE, 3/8 SAE and 1/2 ACME male
- A2L explosion-proof pure copper motor with overheat protection
- Runs continuously for over 2 hours with T-shaped heat sink and cooling fan
Cons
- No warranty term is stated
- No UL, ETL or CSA listing is stated
- No manifold gauge set or hoses are listed
- Residual factory oil may leak in transit, per the listing note
VIVOHOME 110V 1/2 HP 5 CFM Dual Stage Rotary Vane
A 5 CFM dual stage rotary vane pump with a 1/2 HP motor, an oil bottle and a clear oil viewing window.
Pros
- 5 CFM flow with vacuum down to 0.3 Pa in 3 minutes
- Motor current protection against overload and phase loss
- 1/4 inch SAE and 1/2 inch Acme intake fittings
- One-piece die-cast aluminum housing with a two-pole pure copper motor
Cons
- No warranty term is stated
- No UL, ETL or CSA listing is stated
- R410a use needs a 5/16-inch adapter that is not included
- No manifold gauge set or hoses are listed
OMT 9 CFM 2 Stage Rotary Vane Vacuum Pump for R12
A 9 CFM two-stage pump that pulls down to 1.5 microns, the deepest vacuum in this roundup, running under 70 dB with a 2-hour duty cycle.
Pros
- 9 CFM two-stage pump, the highest flow in this roundup
- Pulls down to 1.5 microns (0.2 Pa) per the listing, the deepest vacuum here
- Runs under 70 dB with a stated 2-hour duty cycle
- 12.8 fl oz oil reservoir with a sight glass and scale for monitoring
Cons
- No manifold gauges or hoses come in the box
- 26.1 pounds makes it the heaviest pump here
- No warranty term is stated in the listing
- No safety listing such as UL or ETL is stated
Compare the picks
| Vacuum Pump | Shop Score | Flow | Vacuum | Power |
|---|---|---|---|---|
| VIVOHOME Gauge Kit | 9.6/10 | 5 CFM | 0.3 Pa | 110V |
| VEVOR 5 CFM 2 Stage | 9.6/10 | 5 CFM | 20 microns | 120V |
| VIVOHOME 5 CFM Pump | 9.6/10 | 5 CFM | 0.3 Pa | 110V |
| OMT 9 CFM 2 Stage | 9.5/10 | 9 CFM | 1.5 microns | Not stated |
Specifications are manufacturer rated, as published on each listing and collected 25 October 2026. Where a listing contradicts itself, both figures are shown.
How we scored them
Each pump is scored on performance, build, value, safety and warranty, with the weights published on our How We Pick page. None of these listings states a UL, ETL or CSA listing, and none states a warranty term, so warranty scores nothing here. Safety scores come from stated protective features: motor current protection, anti-backflow valves and overheat protection where a listing names them.
| Product | Shop Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| VIVOHOME Gauge Kit | 9.6 | 32 | 21 | 21 | 7 | 0 |
| VEVOR 5 CFM 2 Stage | 9.6 | 30 | 21 | 20 | 7 | 0 |
| VIVOHOME 5 CFM Pump | 9.6 | 29 | 21 | 20 | 5 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
Buying guide: best ac vacuum pump 2 stage
Flow rate and vacuum depth
All three full-data pumps move 5 CFM, so flow rate does not separate them, and the OMT moves 9 CFM by its title. Vacuum depth is stated in different units across listings, so compare like with like: both VIVOHOME pumps reach 0.3 Pa in 3 minutes, with the kit listing adding 2.25 microns for the same figure, while the VEVOR reaches 20 microns and the OMT lists 1.5 microns. A deeper stated figure suits systems that must hold a vacuum, but the figure alone does not tell you how fast the pump gets there.
Kit or bare pump
The kit is the only pick that arrives ready to connect: a 4-way manifold gauge set with plus or minus 1.6 percent accuracy, four color-coded 5 foot hoses, R410a adapters and a leak detector. The bare pumps list no gauges or hoses, so budget for them separately. Fittings matter too: the VIVOHOME pumps use 1/4 inch SAE and 1/2 inch Acme fittings, the VEVOR adds a 3/8 inch SAE inlet, and the pump-only VIVOHOME needs a 5/16-inch adapter for R410a that is not included, while the kit includes R410a adapters. See our auto AC manifold gauge set guide if you buy a bare pump.
Motor, noise and oil
Both VIVOHOME pumps run 1/2 HP motors at 2880 RPM, one two-pole and one four-pole, while the VEVOR runs a 1/2 HP pure copper motor with an A2L design that the listing calls explosion-proof. The VEVOR runs continuously for over 2 hours with a T-shaped heat sink and a cooling fan, and all three full-data pumps use a fan or fins to shed heat. Noise is stated as under 65 dB for the kit, approximately 65 dB for the pump-only VIVOHOME, and under 70 dB for the OMT, while the VEVOR states reduced noise with no decibel figure. Oil care is visible on all three: viewing windows or a sight glass, a bottom drain valve on both VIVOHOME pumps, and a 330 ml capacity with vg100 oil on the VEVOR.
Refrigerants
Match the pump to the system it will serve. Both VIVOHOME listings cover R134a, R12, R22, R502 and R410a, with the pump-only model needing the separate adapter for R410a. The VEVOR adds R32 and R1234yf to that list, and the OMT title names R12, R22, R134a and R410a. The VEVOR also lists resin degassing and wood stabilization among its uses, beyond AC work. See our best AC vacuum pump for car guide for car-only use.
Use rated jack stands on solid ground, wear eye protection with power and air tools, keep fuel-burning equipment out of a closed garage, and follow the manual for every tool. Read our Safety Disclaimer.
Garage Fit Check
- Check the outlet: the VIVOHOME pumps run on 110 volts and the VEVOR on 120 volts at 60 Hz.
- Allow bench space for the largest footprint: the VEVOR package measures 14.96 by 12.2 by 8.66 inches.
- Store the kit hoses with the pump: the kit includes 5 foot hoses in four colors.
- Check the oil before the first job: all three full-data pumps have a viewing window or sight glass.
- Confirm the fittings: the kit includes R410a adapters, while the pump-only VIVOHOME needs a 5/16-inch adapter that is not included.
Frequently Asked Questions
What does a 2 stage vacuum pump do?
It pulls a deeper vacuum in two steps: a preliminary vacuum followed by further pressure reduction, per the VIVOHOME kit listing. That deeper vacuum suits AC systems that must be fully evacuated before a recharge.
How deep a vacuum do these pumps reach?
Both VIVOHOME pumps reach 0.3 Pa in 3 minutes, with the kit listing adding 2.25 microns. The VEVOR reaches 20 microns and the OMT lists 1.5 microns.
Do these pumps include gauges and hoses?
Only the kit does: a 4-way manifold gauge set, four color-coded 5 foot hoses and a leak detector. The bare pumps list no gauges or hoses.
What refrigerants do these pumps cover?
Both VIVOHOME listings cover R134a, R12, R22, R502 and R410a. The VEVOR adds R32 and R1234yf, and the OMT title names R12, R22, R134a and R410a.
How loud are these pumps?
The kit is rated under 65 dB, the pump-only VIVOHOME at approximately 65 dB, and the OMT at under 70 dB. The VEVOR listing states reduced noise but gives no decibel figure.
Related: the best AC vacuum pump for car, our auto AC manifold gauge set guide and the engine and shop equipment hub.
