Check Your Air Conditioner's Condenser

Inspect the outdoor condenser unit of your air conditioner in spring and again in summer. If you find any problems, call for service; not only does trying to service it yourself void your warranty, you could accidentally release refrigerant into the atmosphere.

Time — 10 minutes
Difficulty — Easy
Expertise — None
Frequency — Twice a year , in spring and summer
Where — All US

Steps

1. When the air conditioner is running, check the refrigerant lines.
   • Look for crimping in both refrigerant lines. They are most vulnerable where they leave the condensing unit and where they go through your exterior wall.
   • The larger tube should be cold and insulated. Check that the insulation is in good condition, without wear or cracks.
   • The smaller tube should be warm along its entire length.
2. Use a carpenters level to check whether the condensing unit is slanted.
3. Cut back plants near the unit to improve airflow.

Tips and Warnings

• Do not place the outdoor air conditioner unit where walls, decks, fences and other structures restrict airflow. Either move the unit or the feature restricting the airflow. Consult with a professional to determine the best solution.
• Place the unit at least 6 feet from things that discharge heat, such as vents from water heaters and dryers. Dryer vents also discharge lint, which plugs air conditioner coils. Consult with a professional to determine which is easier to move.
• Shut off your air conditioner when mowing the lawn to prevent clippings from getting sucked into the condenser. And point the lawnmower discharge away from the condenser so it doesn't throw stones or other objects into the condenser's delicate aluminum fins.