Maintenance Checklist

Maintenance Checklist

Maintain your equipment to prevent future problems and unwanted costs. Keep your cooling and heating system at peak performance by having a contractor do annual pre-season check-ups. Contractors get busy once summer and winter come, so it's best to check the cooling system in the spring and the heating system in the fall. To remember, you might plan the check-ups around the time changes in the spring and fall.

A typical maintenance check-up should include the following.

  • Check thermostat settings
    to ensure the cooling and heating system keeps you comfortable when you are home and saves energy while you are away.

  • Tighten all electrical connections
    and measure voltage and current on motors. Faulty electrical connections can cause unsafe operation of your system and reduce the life of major components.

  • Lubricate all moving parts.
    Parts that lack lubrication cause friction in motors and increases the amount of electricity you use.

  • Check and inspect the condensate drain
    in your central air conditioner, furnace and/or heat pump (when in cooling mode). A plugged drain can cause water damage in the house and affect indoor humidity levels.

  • Check controls of the system
    to ensure proper and safe operation. Check the starting cycle of the equipment to assure the system starts, operates, and shuts off properly.

Cooling Specific

  • Clean evaporator and condenser air conditioning coils
    Dirty coils reduce the system's ability to cool your home and cause the system to run longer, increasing energy costs and reducing the life of the equipment.

  • Check your central air conditioner's refrigerant level
    and adjust if necessary. Too much or too little refrigerant will make your system less efficient increasing energy costs and reducing the life of the equipment.

  • Clean and adjust blower components to provide proper system airflow for greater comfort levels
    Airflow problems can reduce your system's efficiency by up to 15 percent.

Heating Specific

  • Check all gas (or oil) connections, gas pressure, burner combustion and heat exchanger
    Improperly operating gas (or oil) connections are a fire hazard and can contribute to health problems. A dirty burner or cracked heat exchanger causes improper burner operation. Either can cause the equipment to operate less safely and efficiently.

Actions to Do Yourself

  • Inspect, clean, or change air filters
    once a month in your central air conditioner, furnace, and/or heat pump. Your contractor can show you how to do this. A dirty filter can increase energy costs and damage your equipment, leading to early failure.


EnergyStar - U.S. Environmental Protection Agency - U.S. Department of Energy

A Supreme Heating & Air Conditioning is a heating, AC, plumbing, electrical, geothermal heat pump, ductless mini-split, fireplace and furnace repair, service, replacement and maintenance company located in Glen Burnie, Maryland. A Supreme Heating & Air Conditioning employs only the best HVAC technicians for your furnace, boiler, and air conditioner repair or replacement. We proudly service: Glen Burnie, Curtis Bay, Brooklyn, Pasadena, Baltimore, Linthicum Heights, Millersville, Harmans, Severna Park, Severn, Halethorpe, Dundalk, Fort Howard, Hanover, Pikesville, Sparrows Point, Elkridge, Arnold, Crownsville, Gibson Island, Annapolis, Catonsville, Odenton, Gambrills, Essex, Jessup, Annapolis Junction, Rosedale, Crofton, Gwynn Oak, Ellicott City, Savage, Laurel, Columbia, Middle River, Towson and surrounding areas. So when you ask to find "A good furnace repair or service company near me", you've come to the right place. To get an estimate on your furnace replacement or installation, call (410) 766-5525. A Supreme Heating & Air Conditioning services all furnace, AC, humidifier, filter, thermostat and water heater brands including Coleman, Carrier, Bryant, Payne, Trane, Lennox, Rheem, Ruud, Amana, Daikin, Mitsubishi, Fujitsu, Crown, Frigidaire, Gibson, Goodman, Lochinvar, Maytag, Weil McLain, A O Smith, Kohler, American Standard, GeoExcel, General, Aprilaire, Honeywell, White Rodgers, Dynamic and Skuttle.

(410) 766-5525

Address: 152 Blades Lane, Unit B Glen Burnie, MD 21060
Hours: Monday - Friday: 7:00am - 6:00pm • Emergency Service Available

For Furnace repair in Glen Burnie MD, we accept most major credit cards.