Tip & How-To about Heating & Cooling
When an air conditioner freezes over there are two main reasons.
1. Something is dirty - it could be the coils outside the house, the coils at the unit inside the house, and/or a dirty air filter. If any one or more of these are dirty the air flow is restricted. Without warm air giving off it's heat to the air conditioning coils, the AC system will freeze itself.
2. The system is low on refrigerant. This generally takes more tools and knowledge to test and correct. It's best to get an HVAC tech to do take care of that.
In this video I show how I cleaned the evaporator coils to my air conditioner. They were really dirty. The other problem I had was a dirty air filter.
It's also best to get an HVAC tech to clean the evaporator coils too, but with a fair amount of caution and patience one can do this and save the expense of paying a tech to do it. However, one careless slip resulting in puncturing a refrigerant line and you WILL need a tech to fix that and it will probably cost more money overall than the service call you are trying to avoid by cleaning the coils yourself
Additionally, there are some fairly sharp edges and one can suffer a serious cut from just a split second of inattention.
Go slow and pay attention.
Posted by Dogwood on
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