ZENY 3.5CFM Single-Stage Rotary Vane Vacuum Pump for HVAC/Auto AC Refrigerant Recharging w/ R134a AC A/C Manifold Gauge Set Combo : Nice pump

I want to give this product 5 stars but the yellow hose does not fit r134a cans. Gauge sets you purchase at local stores will fit r134a cans. I even read reviews ahead and knew i’d need a 1/4″ to 1/2″ adapter but this adapter was a pain to put together. I had to visit an auto store to buy the valve and visit lowes to purchase a few more adapters. To top it off, even with teflon tape, i cannot stop r134a leaks. The vacuum pump worked perfect and the gauges were not leaky.

The a/c r134a manifold gauge set works very well and is easy to read. To fill your car’s ac system will require a refrigerant can tap and an adapter that connects the yellow hose to the can tap. The adapter required is a 1/4″ sae male x 1/2″ acme female. The pump works great for vacuuming the ac system. I hooked up the vacuum to my vehicle and it quickly reached 30 inches of mercury.

Worked perfectly for my pioneer mini split instillation. I don’t know how long it will last. With the money i saved on the self install, it really doesn’t matter.

The kit was delivered as advertised. Purged the system the first time and it worked great. The second time i tried to purge the system the pump overheated. I thought it broke because it wouldn’t turn back on but after cooling off it came back on. Should have gotten the 1/2 hp pump. Was able to get the system purged and charge it. The gasket fell off one of the hoses so now it’s out off commission. Wish they had the option to buy extras.

Had major a/c problems in my ford expedition, now we can hang meat in there.

I bought the pump and gauge combo to do a split unit ac install. They worked great and did the job with no issues. This combo pack seemed to be much cheaper than buying a pump and gauge set seperately. The only other thing your should know is that r410 uses a different size fitting than r134. So if you are buying this for doing a split unit install than you need an adapter which can also be easily found here on amazon and only cost around 7 bucks.

Used for vacuuming two separate ac systems and it works well. Only thing that was odd was that on the second car, the pump would turn on for 2 seconds then shut off. I tried different outlets and made sure there was enough oil in it. After detaching it from the gauge set and putting the cap on, it ran fine. Aside from that minor hiccup, its a great pump/gauge set with an affordable price tag. Perfect for those that are looking to fix an a/c system but don’t really care for an expensive brand. If you’re looking to use this in a shop, i’d look elsewhere. If you’re looking to use this for one or two cars then put it in storage to never see light again, it’s a good product.

I was about to leave a bad review. There wasn’t a set of manifold gauges included in the vacuum pump package. I figured one seller, one package. They verified via email, that they did in fact ship two separate packages. Which, i just received as i was doing the bad review. Most sellers leave you hanging, and let you spend 45 minutes on the phone, for them to tell you they shipped separately. Vacuum works like it should, and is perfect for diy. I borrowed a set of gauges to see how bad my vehicles ac leak was.

  • Excellent product, I was a bit confused choosing which
  • R134A Manifold Gauge Set works very well and is easy to read
  • The vacuum pump worked perfect and the gauges were not leaky

ZENY 3.5CFM Single-Stage Rotary Vane Vacuum Pump for HVAC/Auto AC Refrigerant Recharging w/ R134a AC A/C Manifold Gauge Set Combo

  • Make sure this fits
    by entering your model number.
  • High Efficiency and Low Noise, Heavy-duty Aluminum Alloy Casing
  • Oil Drain Plug Positioned at Bottom of Oil Reservoir,Internal High Volume Cooling Fan for Extended U
  • Exhaust Port with Exhaust Cap, Direct Drive Motor Allowing Easy Starting Which is Maintenance Free
  • Oil Sight Glass For Monitoring Oil Levels, ON/OFF Switch
  • Non Slip Cushion Handle, Comes With a Bottle of Vacuum Oil

It worked ok when i first got it. I stuck a dallas cowboy sticker on it and it did twice as well. I added an oakland raider sticker and holy guacamole. This thing will suck a bowling ball through a coffee straw.

It works fine but it is for automobile if for mini split ac need a adapter.

Gauges were off by a bit, but good thing is u can adjust em. There was something in the lines, u might wanna blow some air through em. Haven’t tried the compressor yet, but will update soon. Update: compressor does its job, fittings failed with in 5-7 uses but were replaced by the seller at no charge (a+) now gauges seem to have mind of their own (sticking, slow to react) hope i can get em exchanged under warranty. But over all its an ok set even though i did pay 112 for it but now its 87, which makes even better deal.

It’s not a yellow jacket pump, but i’m not a professional. The pump gets hot so keep a fan on it to keep it cool. If you’re using it to install a mini split air conditioner system make sure you go to the local hvac store and buy the right fitting to adapt from 1/4 inch to 5/16.

Works great, i ordered it so i could repair my air conditioner on my truck and this was exactly what i needed to recharge the a/c system after the repair. It has plenty of power and worked exactly as i wanted it to.

Excellent product, i was a bit confused choosing which pump to order from amazon considering some others had more reviews, but i checked the reviews on the zeny pump without the gauges and it also had awesome reviews, and this one has a bigger motor than the. Again as said by many others this is not a heavy duty pump, it’s only for dyi home projects and works perfectly for such. The heat it produces during operation is perfectly normal and is not considered over heat by any means. Many reviews were talking about the gauge manifold needing an adapter to hook it up to the r134 can, that’s true i picked the valve from the auto parts shop and had to go and pick some adapters from the hardware store (every thing ran me like an extra $12), i’ve posted picture of these adapters incase you want to order them online. Very important do not tighten the hose connection by any means but your hand, you will ruin the o-rings, same thing runs for other kits.

The pump is nice, it feels very sturdy and well built, and it’s very quiet. The manifold gauges are pretty good, but the brass fittings on them feel a little too soft so you’ve gotta be extra careful that you screw the hoses on perfectly straight. I vacuumed my ac for one full hour with this equipment and charged it up with no problems.

Awsome – used to fix my 911 ac unit – i was able to recharge my unit and the ac works great now.

Review Date
Reviewed Item
ZENY 3.5CFM Single-Stage Rotary Vane Vacuum Pump for HVAC/Auto AC Refrigerant Recharging w/ R134a AC A/C Manifold Gauge Set Combo
4 / 5  stars, based on  70  reviews