My A/C isn't blowing cold air?

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When I call for cool the inside blower comes on and air flows freely. Shortly after the outside compressor engages but the air coming from the vents doesn't get any cooler. Suggestions appreciated.

  12 answers
  • Oliva Oliva on Jul 29, 2018

    Perhaps your coolant is leaking. Sometimes takes 3 trips before leak is found or situation corrected completely. Any evidence of drips in basement beneath tubing can be an indicator. Have a technician check it out, soon.

  • Betsy Betsy on Jul 30, 2018

    Hi Peter: Maybe you need your freon, or whatever they're using these days, refilled. I'd get someone who knows about this sort of thing to check it out. I don't know if your area has home plans through your electric or gas companies, but if they do, it's good to sign up for them. And, maybe they can come and check out your A/C cheaper than a regular company. Good luck.

  • Pai9582734 Pai9582734 on Jul 30, 2018

    It may need refrigerant. Also have your High pressure and Low Pressure switches checked, they may have been bypassed or 1 may have been bypassed and the other wasn't. Yours sounds exactly the way mine was acting over a week ago and my ac guy came and checked it out and noticed the switches were bypassed, well at least 1 of them was.

  • Dod9702889 Dod9702889 on Jul 30, 2018
    or the biggest cause for it not cooling is your outside unit is dirty try getting it cleaned with chemicals that get into the coils on the outside before adding freon to the unit I've found out this is usually the problem if you've never had it serviced

  • William William on Jul 30, 2018
    Sounds like you do need Freon. Call an HVAC pro.

  • Peter Peter on Jul 30, 2018
    Thanks to all for your thoughts on the matter, I appreciate it. After checking the capacitor, contactor, condensation collection tray, that the area was free and clear of debris, that there wasn't any "funny" sounds, that there was good air flow and new filters, I've called someone to come out and service it as I know nothing about Puron or the higher skill level items that might be at issue.

    Thanks again, and much appreciated. I'll let you know what it turns out to be.

  • Laf28803631 Laf28803631 on Jul 30, 2018

    you need Freon. i'm going to the same thing now.

  • Phil a Phil a on Jul 30, 2018
    A quick and easy way to check if the condenser (outside unit) is working correctly is that the LOW Pressure SIde (large pipe usually with insulation) is Cold to the touch and might have moisture condensate on it and the HIGH Pressure Side (small pipe w/ no insulation) is Hot to the touch. Warm Air should also be blowing out the top of the condenser unit to show that the heat from inside the house is being blown into the outside air. If you're really low on Freon/Puron, for damage prevention the compressor pump will not run, though the condenser fan might still blow air. When the compressor pump is actually running inside the condenser unit, you'll hear a more noticeable "growling" sound. The condenser fan by itself is relatively quiet. Good luck..

  • Kmdreamer Kmdreamer on Jul 30, 2018

    It needs freeon

  • Peter Peter on Jul 31, 2018
    Phil, Cathy, you're absolutely right. Everything on the unit was working fine but turns out it was pretty much completely out of Puron. They loaded it back up and pressure was holding. They're coming back later today to inject some sort of leak stop that coats the pipes and hopefully that should take care of it.

    I'll keep you posted.

    Thanks to all.

  • Peter Peter on Aug 03, 2018

    After injecting the leak stop, several days later, pressure's holding and all appears to be fine. Thanks.

  • Brenda Juarez Brenda Juarez on Apr 09, 2020

    It takes a long time for my inside temp to come down from 80 to 70