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Claim This BusinessMissouri Furnace & Air Conditioning has kept St. Louis-area homes comfortable since 1962, when the Hammonds established this family-owned business. Now women-operated, the company holds proper licensing and insurance while serving St. Charles, St. Peters, O'Fallon, Clayton, and surrounding Earth City neighborhoods. Their 304 reviewers award a 4.8-star average, with many clients recalling service spanning decades. The operation maintains 24/7 availability for emergencies, staffing technicians who arrive in marked vehicles and explain repairs in understandable terms before presenting options.
This contractor distinguishes itself through manufacturer partnerships with Ruud and GE HVAC, offering equipment new homeowners recognize. Their 10-year parts-and-labor warranty exceeds typical coverage, and financing options spread costs for major installations. The Money Savers and Warrior maintenance clubs provide bi-annual priority service, 20% discounts on repairs, and a $1,000 equipment discount for enrolled clients. Indoor air quality solutions include ventilation assessment and smart thermostat integration, addressing a growing concern for Missouri households during allergy season.
Reviewers frequently commend technician Aaron M, who arrived within an hour when Amy Caudill's heat failed during winter weather. Client Jim Rimkus documented a pricing dispute requiring two trips for defective booster fans, while others recall technician Nick completing efficient, courteous repairs. Longtimeline client "Me" describes receiving consistent service from James since the early 1980s, noting his punctual arrivals and clear explanations. The negative reviews center on cleaning standards and unexpected charges rather than technical competence.
312 of 304 reviewers award 4 or 5 stars, with five-star accounts naming technicians James (service since the 1980s) and Aaron M (same-hour emergency arrival). The four one-star reviews detail cleaning standards, pricing disputes, and communication issues rather than system failures or diagnostic errors.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Diagnosing ignition failures, heat exchangers, and airflow issues for gas furnaces with 24/7 emergency availability.
Installation, maintenance, and refrigerant repairs for air conditioning systems serving Missouri summers.
Ventilation assessment, air filtration, and solutions addressing household allergens and humidity control.
Installation and repair of geothermal and traditional heat pumps for efficient year-round heating and cooling.
Light commercial heating, cooling, and zone control systems for business facilities and office buildings.
Weil-McLain boiler installation and repair for residential hydronic heating applications.
Integration and programming of connected thermostats for remote system monitoring and efficiency programming.
Bi-annual priority service, 20% parts discounts, and filter changes through enrollable Money Savers and Warrior programs.