Greater Rochester Area


Twin Cities Metro


Serving the Greater Rochester Area and the Twin Cities since 1988

K & S Heating, Air Conditioning, Plumbing, LLC BBB Business Review

Air Conditioner Inspection List

If you neglected a spring checkup, your air conditioner may not be cooling as well as it could. A year’s worth of dirt and debris clogging the cooling fins can lower the efficiency. Also a low coolant level, a dirty blower fan filter, and a number of other simple problems can significantly reduce the efficiency of the condenser and wear it out faster.

Outside Unit of AC

The outside unit, called the condenser, contains a compressor, cooling fins and tubes and a fan. The fan sucks air through the fins and cools a special coolant. Then the compressor pumps into the house to the evaporator through a copper tube. The coolant chills the fins and tubes of the evaporator. Warm air drawn from the house by the blower passes through the evaporator and is cooled and blown through ducts to the rooms in the house. The evaporator dehumidifies the air as it cools it, and the resulting condensation drains off to a floor drain through a tube. The blower unit and ducting system vary considerably depending on whether you have a furnace or a heat pump. It may be located in the basement, garage, furnace room or attic.

Clean the System

Clean your outdoor unit on a day that’s at least 60 degrees outside. That’s about the minimum temperature at which you can test your air conditioner servicing to make sure it’s working. The condensers usually sit in an inconspicuous spot next to your house. You will see two copper tubes running to it, one bare and the other encased in a foam sleeve. If you have a heat pump, both tubes will be covered by foam sleeves. You can also contact us and we can inspect the system for you. The fins are fine metallic blades that surround the unit. They get dirty because a central fan sucks air through them, pulling in dust, dead leaves, and dead grass. The debris blocks the airflow and reduces the unit’s cooling ability.

Vacuum the fins clean with a soft brush because they are fragile and easily bent or crushed. On many units you’ll have to unscrew and lift off a metal box to get at them. Check your owner’s manual for directions and lift off the box carefully to avoid bumping the fins. Occasionally you’ll find fins that have been bent.

Remember the filter

Also remember to inspect the filter on the air conditioner. This will help the air quality improve in your home. By having the filter collect the dirt, dust, and other pollutants, you will have the best air quality possible. If you are not sure how often to check the filter this summer, make sure to contact us and we can advise you on a schedule.

K&S has been your trusted Heating, Air Conditioning, Plumbing and Electrical partner since 1988.

Count on our unmatched Experience and the Quality you know from K&S

4205 Highway 14 West

Rochester, MN 55901

(507) 282-4328

6513 Cecilia Cir.

Edina, MN 55435

(952) 697-4328

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