Aire Serv of St. Louis provides full-service heating and cooling to Frontenac and the broader west St. Louis County area. Summers here push well past 90 degrees, and January lows regularly drop into the single digits, meaning your HVAC system earns its keep every season. Frontenac's estate-style homes often run larger duct systems and multi-zone setups that need precise calibration rather than a generic patch job. Our crew quotes the price upfront before any work begins, and every service is backed by the Neighborly Done Right Promise®. Call our St. Louis HVAC pros today.
From tune-ups and maintenance to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature.
Expert Heating and Cooling Frontenac, MO Can Rely On
Aire Serv of St. Louis HVAC covers the full range of home comfort needs. On the cooling side, that means checking refrigerant charge with gauges, testing capacitors and contactors, and determining whether repair or a new high-efficiency unit makes more sense for your household. We install and service central air conditioners, ductless split AC systems for rooms that lack ductwork, and heat pump systems that handle both heating and cooling from a single outdoor unit. Heat pumps make strong practical sense in this climate — Missouri sits in the range where a heat pump carries the bulk of the heating load through most of winter without a backup kicking in.
When heating calls come in, Frontenac furnaces — especially those from the early 2000s — are reaching the age where cracked heat exchangers and failing inducer motors become real concerns. We use a combustion analyzer to check flue gas composition during every furnace inspection, the most accurate way to catch a crack before carbon monoxide enters living spaces. Our team handles furnace repair and replacement, services radiator heating systems found in older brick homes, and installs thermostat upgrades that trim energy use without sacrificing comfort.
Indoor Air Quality and Seasonal HVAC Maintenance in Frontenac
Missouri's humidity swings are hard on your home. July dew points push past 70 degrees, and ragweed season runs well into October. A whole-home dehumidifier installed in the duct system pulls excess moisture at the source, while UV lamp systems inside the air handler reduce mold spores and airborne bacteria. HVAC and air duct cleaning address the built-up debris that recirculates every time the system runs — a particular concern in Frontenac homes with older flex duct runs.
Our HVAC maintenance plans include a full seasonal tune-up twice a year: refrigerant charge check, electrical component testing, coil cleaning, and filter replacement. Consistent maintenance keeps equipment warranties valid and extends system life past the typical replacement window. St. Louis County's pollen and mold spore counts also make filter checks especially important between scheduled visits.
Frequently Asked Questions About HVAC in Frontenac, MO
Age and repair history are the clearest signals. A furnace over 15 years old that has needed multiple repairs in recent seasons is usually a better candidate for replacement than continued service. Cracked heat exchangers and failed inducer motors on older units often cost as much to fix as the system is worth. We check heat exchanger integrity with a combustion analyzer during every diagnostic visit — this catches a crack before carbon monoxide becomes a concern. Ameren Missouri also offers rebates on qualifying high-efficiency furnace replacements that can offset a portion of the upfront cost.
We cover the full range of home comfort services. Heating: furnace repair and replacement, heat pump installation and service, radiator service, and thermostat upgrades. Cooling: central AC repair and replacement, ductless mini-split systems, and heat pump cooling. Indoor air quality: whole-home dehumidifiers, humidifiers, UV lamp installation, air filter replacement, and air duct cleaning. Maintenance plans are available for year-round coverage.
Ice on the evaporator coil points to two likely causes: low refrigerant charge or restricted airflow. A refrigerant leak drops coil pressure below the frost point, and the moisture in the air freezes on contact. Dirty filters or blocked return vents produce the same effect by cutting warm airflow across the coil. St. Louis County's high summer humidity makes this worse — there's simply more moisture available to freeze. Shut the system off and let it thaw fully before calling for service, since running a frozen coil can damage the compressor. We use refrigerant gauges and airflow measurements to pinpoint the cause.
Frontenac homes seal up tight in winter, and recirculated air carries whatever is sitting in the duct system. Dust mite debris, pet dander, and mold from basement humidity build up in ductwork and get pushed through the house every time the furnace fires. St. Louis County's winter air quality index also worsens during cold snaps when temperature inversions trap ground-level pollutants. A UV lamp installed in the air handler kills airborne mold and bacteria before they reach living spaces, while a whole-home humidifier prevents the dry air that irritates airways through a long heating season.
Contact us or request an appointment online, and we'll confirm a time that fits your schedule. Upfront pricing means no surprise charges at the end of the visit. We serve Frontenac, Ballwin, Wildwood, Ellisville, Manchester, Eureka, and the broader West County region. Every service call is covered by the Neighborly Done Right Promise®.
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