Tip & How-To about Heating & Cooling

How to save lots of money on your heating and cooling bill

Allways keep you indoor filter cleen a dirty indoor air filter can cost you twice as much to run your unit ! and also turn off your unit and wash your outside coils with water just dont bend the fins doing it ... good luck jason

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I was checking my central ac, heater. It clicks, gets hot, then does nothing. Blower doesn't kick on. If I turn it on the ac section, outside unit fan, and inside blower motor all work.


Check that the filters are clean, Common failure on most air cons. If they are blocked or dirty, the indoor unit gets really hot and keeps switching off as it thinks it has reached room temperature. WASH the filters in water. Dont vacuum or brush them.

Oct 03, 2015 | Heating & Cooling

2 Answers

Can not blowing as hard as it should. Compressor kicking on but freezing up easily. Any ideas?


Check your filters and make sure that there is adequate airflow, also make sure that any drain tubes are not plugged.

Jul 03, 2015 | Heating & Cooling

1 Answer

why does my central air keep freezing up?


An air conditioner freezing up is either low airflow or low on refrigerant. If the filter is clean, then check the refrigerant level, blower running at proper speed, make sure indoor coil is not dirty or restricted. Make sure that the duct outlets are all open and some have not been closed.

Sep 01, 2014 | Heating & Cooling

1 Answer

front grill


Check the air filter and if it is dirty, replace..
Turn equipment off and let the ice melt.
After ice melts, place a/c in cooling mode and set the thermostat to 3 degrees below room temp display.

The indoor unit fan should start blowing cold air immediately and then turn off once the room temp drops one degree below the cooling temp setting.
If the indoor unit does cycle off, check the outdoor unit and make sure it turns off at the same time.
If the outdoor unit continues to run and the indoor fan is not running, the indoor unit will ice up.
A defective compressor relay that is stuck in a closed position will cause icing of the indoor unit because it keeps the compressor running when it should turn off with the indoor fan.

Do you have an error code being displayed on the controller?
Is there an led light that is flashing on the indoor unit?

Another possibility causing the indoor unit to ice up is if the freon in the system starts to get low.
Make sure the ice has all melted for this next check.
Pretty easy to check without special tools.
If the air filter is clean and there is no dust/ dirt blocking the fins on the indoor unit, turn a/c back on to cool and check that the indoor unit fan comes on and is blowing air good.
Once everything seems to running good go to the outdoor unit.
There will be two lines with black rubber insulation covering them.
Peel back the insulation three inches on each line and observe the copper lines.
If either line starts to frost up the a/c system is most likely low on refrigerant.


Another cause of indoor unit icing could be that the aluminum fins behind the air filter are clogged with dust or other foreign material.
This would block the air that must be pulled in causing the indoor unit coil to become too cold due to lack of air flow and it will ice up.

Operating the cooling system when the outdoor temperature is below 60 degrees can cause the indoor unit to ice up also.

I'm Robert.
Florida certified a/c contractor. 30 years experience.
Hope this helps.


Mar 18, 2014 | Fujitsu Heating & Cooling

1 Answer

How do I clean it?


1. remover the filter and vacume the indoor coils if they are dirty.2. after you clean the indoor coils you can take some hot soapy water and wash out the drain pan to the indoor coil and wipe any slime from the pan if possible.
3. the ourside coil can be vacumed as well . shut down the power to the unit before you proceed. You can also wash the coils with water being careful not ot get the whole thing wet but just the coils.check the air flow and wash against the direction of the air flow.
The most inportant thing you can do is keep you filters serviced. I know this is often difficult to understand but a little dirty filter is better then a clean filter.. So if it just a bit dirty it fine Ceck it monthly and if possible use a 2 inch thick pleated filter. cost more but it is the best filter for the $.
Hope this helps .. let me know .. Jon

Aug 01, 2011 | Carrier 36KCARMS Air Conditioner

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