Air source heat pumps and central air conditioning units are both popular cooling and heating system in the United States. These two units offer the best option in terms of comfort and maintenance especially in areas where humidity is extremely high.

Central air conditioning units are comparably efficient than Heat pumps that can serve as a major investment for many homeowners. Not only is this unit a lot more efficient in terms of functionality and energy consumption, it is also quite expensive to install and replace.

A simple annual maintenance will spell all the difference when it comes to keeping your cooling unit in top shape.

Cleaning it doesn't really require any impressive skills, just a few efforts from you and a couple of hours of your time. Here's how you do it. Shut down the power line unit that supplies electricity to all your central air conditioning units.

If you're doing this alone, start the maintenance work by cleaning the cooling unit's condenser located just outside the unit.

Using a screwdriver, unscrew and take off the metal boxes of the air conditioner. Be careful not to bump in one of the unit's metal blades as they can easily bend.

Vacuum the unit's fins, or also known as metal blades, using a gentle brush attachment. Expect while cleaning lots of debris, dirt, leaves, grass and cottonwoods, all of which hinder the airflow system reducing the air conditioning unit's ability to bring cooler air.

Next, using again your screwdriver, unscrew its fan and vacuum the unit's condensers. Condensers are built tightly in their place so removing them there is fairly impossible, but you can lift it a little bit, enough to clean its deeper parts thoroughly.

Replace the outer box and the fan, and move indoors to safely clean the unit's evaporator. Find its evaporator which is usually situated inside metal ducts near its blower. Vacuum and clean its fins similar to what you did on its condenser's fins.

Finally, clean its blower using again the same vacuum attachment and then install a new filter. You can now safely turn the power back on and try the unit.


Remember to clean only your condenser when its temperature is at least 60 degrees. Lower than 60 degrees will make the unit very hard to test.

Some central air conditioning units are built with lubrication points. Before you start dismantling your cooling system, read the manual first. If your units have lubrication points, place a few drops of electric motor oil in each point.