🚲 Efficient Cycling Pressure Switch: Four Seasons 37308 System Mounted Review

My air conditioner was in and out. Installed as a result, does not work. Went to the auto parts store and bought another one. AC is back on.

read review so some didn't have o-ring. It was nice to know before the package arrived. Everyone stop, go and get the o-ring, I would give 5 stars if it came in a package that cost 10 cents.

I just installed it yesterday so don't know if it will solve my problem for a few days. A new O-ring is not included. Some have answered the question of what it does. THIS DOES NOT COME WITH A NEW O-RING

BUT that doesn't say it's on,,,, this switch is easy to replace as others have said. Apply appropriate grease to the old O-ring. Hand-tighten the new switch (possible but not necessary with a wrench). Connect the wires. @ 30 seconds job. And it works!

Didn't have a new o-ring as expected but I've raised my rating from 3 stars to 4 because it fits the old o-ring exactly and I need the temp in to turn my truck because the air conditioning is freezing me! 03 Avalanche fixed my intermittent compressor/warm air issue.

Road test: Icy air at idle. The AC clutch now cycles on and off and works properly with the appropriate climate control setting. Now it doesn't toggle on and off at higher settings. Thank you! I will update if I encounter other issues during test runs.

Ok my second try and it came up with no o-ring again, I hate using old o-rings, here is a suggestion on where to get the correct o ring can buy? Thanks very much! (I didn't know that before either, but you can't use a regular O-ring, it has to be one that the refrigerant won't eat, also my second pressure switch doesn't work properly)

I wanted to give zero stars or even -1 if that were allowed. I installed this product and tightened it properly. When tightened (to the same extent as the previous genuine OEM part) coolant actually leaks out! It also never worked properly (even if it wasn't leaking). Only buy this product if you want something that won't work and will drain your air conditioner. In other words, DO NOT BUY THIS!