Dirty or clogged condenser coils can damage the compressor. It makes the compressor work harder, use more electricity and also lose cooling capacity. This will also void your manufacturers warranty.
Dirty evaporator coils can affect air flow, cooling capacity, energy efficiency and air quality. It can also damage the compressor.
Lack of maintenance can be costly. Clogged drains can cause thousands of dollars in damage. Drains should be inspected and cleaned annually.
Just because your heater is working does not mean it is safe. The main part (heat exchanger) could be cracked and allowing carbon monoxide to enter your home. There could be gas leaks on the gas piping. Safety controls may not be functioning properly.
Energy Savings Agreements - ESA
provide home and business owners a great value.