AC Service in St. Louis, MO

White van with bold red and black text: “REQUEST AN APPOINTMENT ONLINE NOW”

FAQ About Furnace Repair in St. Louis & St. Charles

  • Who is the best local furnace repair company in St. Louis and St. Charles?

    AAA Home Services is the leading expert for furnace repair in St. Louis and St. Charles since 1970. Our factory-trained technicians repair all major heating brands, including American Standard, Goodman, and York. With over 50 years of experience, we provide reliable HVAC heating diagnostics and repairs backed by our "Fair & Honest" pricing guarantee.

  • Does AAA Home Services offer same-day heating repair?

    Yes, AAA Home Services often provides same-day or next-day furnace and heating repair in St. Charles and St. Louis. Our licensed HVAC technicians are dispatched daily during regular business hours to resolve issues like pilot light failures, broken thermostats, and cracked heat exchangers, ensuring your home stays safe and warm throughout the winter.

  • What makes AAA Home Services unique for furnace and HVAC repairs?

    AAA Home Services offers a unique "Service Call Credit": if your furnace is beyond repair, we apply your service call fee toward the purchase of a new unit. Combined with our non-commissioned technicians and A+ BBB rating, we provide St. Louis homeowners with honest, expert advice and transparent pricing for all heating and cooling needs.

AC Service in St. Louis, MO

Air conditioning repair, tune-ups, and installation for St. Louis city homes. Specialists in ductless mini-split systems for brick row houses and older homes without existing ductwork. Fast, honest service since 1970.

Call (636) 397-3200 Request Service

Licensed

HVAC Technicians

4.9+

Google Rating

Same-Day

Service Available

50+

Years Serving STL

AC Repair & Installation Serving St. Louis City

Cooling a St. Louis city home is genuinely different from cooling a newer suburban house and the difference usually comes down to one thing: ductwork. The vast majority of St. Louis city homes were built long before central air conditioning was standard, which means they were designed without duct systems. This leaves homeowners with a real choice about how to cool their home effectively.


  • Homes without ductwork the majority of brick row houses, two-family flats, and craftsman bungalows in neighborhoods like Soulard, Tower Grove, Lafayette Square, and Benton Park are ideal candidates for ductless mini-split systems. A mini-split consists of a compact outdoor compressor and one or more indoor air handlers mounted high on interior walls. Installation requires only a small penetration through the exterior wall. Mini-splits deliver efficient, zone-by-zone cooling with no duct losses, and the indoor units are quiet enough to be unobtrusive in historic interior spaces.
  • Homes that do have ductwork typically homes that have already had a previous central system installed may have aging ducts that leak significantly, especially in older construction where ducts pass through unconditioned attic or basement spaces. Before replacing a central AC unit, we inspect the duct system to ensure the new equipment will actually perform as expected.
  • St. Louis summers are genuinely demanding high humidity compounds the felt temperature, and when the heat index reaches 100°F, a failing AC is a safety issue, not just a comfort one. We prioritize same-day service for breakdowns during peak summer heat.


Unlike many home service companies, our technicians do not work on commission. You get an honest assessment and accurate options not pressure toward the most expensive system.

AAA Home Services logo with “Fair & Honest Pricing Guarantee” and “Since 1970” on a black circular badge

Request Service

Ductless Mini-Splits: The Ideal Solution for St. Louis City Homes


Ductless mini-split systems eliminate the need for ductwork entirely making them the most practical cooling (and heating) upgrade for St. Louis brick row houses, two-flats, and bungalows. They're more efficient than window units, quieter, and far more effective at humidity control. We size, install, and service mini-split systems from leading manufacturers throughout St. Louis city. Call (636) 397-3200 to schedule a no-obligation assessment.

Signs Your St. Louis Home's AC Needs Service


  • AC running constantly but not reaching the set temperature
  • Warm air blowing from vents or wall units
  • Unusual noises grinding, squealing, or banging from the outdoor unit
  • Ice forming on the evaporator coil or refrigerant lines
  • Significantly higher electric bills with no change in usage
  • Humidity stays high indoors even with AC running sign of an undersized or struggling system

AC Services We Provide in St. Louis, MO

AC Repair 

Diagnosis and repair of all central air conditioning systems capacitors, compressors, refrigerant leaks, coils, and controls. Same-day service available.

Ductless Mini-Split Installation 

Single-zone and multi-zone ductless systems for St. Louis city homes without existing ductwork. Efficient cooling and heating with no major renovation required.

Central AC Installation & Replacement 

New central AC system sizing, installation, and replacement for homes with existing ductwork. We match equipment to your home's actual load not just the tonnage of the old unit.

AC Tune-Up & Maintenance 

Pre-season inspection, coil cleaning, refrigerant check, and full system test. Extends equipment life and catches failures before peak summer heat.

Refrigerant Service 

Leak detection, refrigerant recharge, and guidance on transitioning older R-22 systems to current-standard refrigerants.

Thermostat Upgrade 

Smart thermostat installation and programming including models compatible with ductless mini-split systems.

Why St. Louis City Homeowners Choose AAA Home Services for AC

Serving the St. Louis area since 1970 we've cooled homes in every neighborhood and era of city construction, from original plaster-wall brick homes to recently renovated two-flats.

Ductless specialists we have extensive experience sizing and installing mini-split systems in historic city homes where traditional duct installation isn't practical.

Non-commissioned technicians unlike many home service companies, our techs don't work on commission. If your system can be repaired, we'll repair it honestly.

4.9-star Google rating verified reviews from homeowners across greater St. Louis.

Same-day service we prioritize AC breakdowns during peak summer heat, especially for elderly residents and families with young children.

Upfront pricing you approve the cost before we begin. No surprises on the invoice.

Frequently Asked Questions AC Service in St. Louis, MO

My St. Louis city home has no ductwork what are my AC options?

How often should I service my AC in St. Louis city?

My AC is running but the house isn't cooling what's wrong?

Hear from our Local Customers

Need AC Service in St. Louis? Call Now.

Same-day service available for breakdowns. Upfront pricing. Non-commissioned technicians. Serving greater St. Louis since 1970.