Heating, Air Conditioning, Fridge, HVAC/central air unit frozen .


hi. my central air unit freezes up. so the guy put a water pump on it and it stopped for a couple of days but, now it's frozen back up. I use to hear the blower in the inside unit come on but now I don't hear it and now the blower isn't blowing . and when I take the door of the blower part it blows a little better. PLEASE PLEASE HELP! KIDS HAVE ASTHMA SO THEY ARE MISEAREABLE! THNKS IN ADVANCE!

There are a few things that can cause a unit to freeze up.  One common problem is air flow.  Common causes for poor air flow are dirty filters and a fan motor that is not working properly.  The other common issue is the system is low on refrigerant. These are not the only things, but the more common ones.  You can start by checking the filter and making sure there is nothing blocking air flow to or from the unit.


Heating, Air Conditioning, Fridge, HVAC

All Answers

Answers by Expert:

Ask Experts


Craig HVAC Expert


I have been in the HVAC field for the past 18 years. I can help with most HVAC questions. I work on commerical buildings for the most part, and have yet to find anything I could not troubleshoot and repair, when repairable. I work on small 1 ton units to a 2500 ton chiller. Troubleshoot air flow, elect, and control problems. I attend regular classes to keep up with the latest and greatest.


I work on commerical sites, hospitals, gov't buildings. I can troubleshoot just about anything in the HVAC business.

5 years trade school, VFD training classes, Liebert factory training, some York and Trane factory training.

©2017 About.com. All rights reserved.

[an error occurred while processing this directive]