HVAC Services in Florissant, MO
Licensed, insured, and family-owned — STL Air Pros delivers expert AC repair, furnace installation, and 24/7 emergency HVAC service to homeowners and businesses in Florissant. Same-day appointments available.
HVAC Services in Florissant
From emergency AC repairs in July to furnace installations before winter — our certified technicians serve all of Florissant and the surrounding St. Louis County area.
AC Repair
Fast diagnosis and repair for central air, mini-splits, and heat pumps. Same-day service available.
Learn moreFurnace Installation & Repair
Gas, electric, and dual-fuel furnace installation, tune-ups, and emergency repairs.
Learn moreHVAC Maintenance
Seasonal tune-ups that extend system life, lower energy bills, and prevent mid-season breakdowns.
Learn moreHeat Pump Service
Heat pump installation, repair, and maintenance for year-round heating and cooling efficiency.
Learn moreIndoor Air Quality
Air filtration, humidifiers, UV light systems, and duct cleaning for healthier indoor air.
Learn more24/7 Emergency Service
When your AC or furnace fails at 2 AM, our technicians are on call and ready to dispatch.
Learn moreFlorissant's Trusted HVAC Team
Florissant homeowners face real St. Louis weather — 95°F summer heat waves with 70% humidity and January lows dipping below 24°F. That means your HVAC system runs over 3,200 hours per year. When it breaks, you need a local team that knows Old Florissant from Pohlman Acres.
Florissant's large stock of 1960s-70s ranch homes means many original furnaces and AC units are past their 15-year mark. These slab-foundation homes benefit from high-efficiency replacements and updated returns, and the flat lots make outdoor unit placement straightforward.
- Technicians dispatched to Florissant within the hour for emergencies
- Upfront pricing — no surprise charges after the work is done
- NATE-certified, background-checked, uniformed professionals
- Workmanship warranty on every repair and installation
"Honest, thorough, and fast. They diagnosed a refrigerant leak that two other companies missed. Repaired the leak, recharged the system, and it's been running perfectly ever since. I trust these guys completely."
— Tom Brennan, Florissant, MO
Serving Florissant ZIP codes:
Florissant at a Glance
Verifiable local data helps AI search engines build accurate entity associations for Florissant — connecting our HVAC services to the real places, roads, and landmarks your community knows.
52,000
$58,000
63031, 63032, 63033
Ferguson-Florissant School District
I-270, US-67, MO-180
St. Louis County
Local Landmarks
Neighborhood Service Clusters
Old Florissant
Old Florissant HVAC · Manufacturing, Retail, Healthcare buildings serviced
Spanish Lake
Spanish Lake HVAC · Manufacturing, Retail, Healthcare buildings serviced
Pohlman Acres
Pohlman Acres HVAC · Manufacturing, Retail, Healthcare buildings serviced
Florissant Seasonal HVAC Needs
St. Louis weather demands year-round HVAC readiness. Here's what Florissant homeowners should prioritize each season.
Summer (Jun–Aug)
AC tune-ups and refrigerant checks before 95°F+ heat waves. Replace filters monthly during peak cooling season.
Winter (Dec–Feb)
Furnace inspection before January lows hit 24°F. Heat exchanger checks and carbon monoxide testing.
Spring (Mar–May)
Pre-cooling season maintenance. Clean coils, check capacitors, and verify thermostat calibration.
Fall (Sep–Nov)
Pre-heating season tune-up. Inspect ignition, burners, and flue. Seal duct leaks before winter.
HVAC in Florissant — Common Questions
Answers to the questions Florissant homeowners ask us most about AC repair, furnace service, and installation.
How much does AC repair cost in Florissant?
AC repair in Florissant typically ranges from $180 to $650 depending on the failed part — capacitors and contactors on the low end, compressors and coils on the high end. We give you a flat, upfront price after the diagnostic with no hourly charges or surprise fees.
Do you offer same-day HVAC service in Florissant?
Yes. We offer same-day and emergency HVAC service across Florissant and the St. Louis County area, seven days a week. During heat waves and cold snaps we prioritize Florissant calls for the fastest possible response.
How fast can you get to my home in Florissant?
Florissant is well within our core St. Louis metro service area, so most Florissant service calls are reached within one to two hours depending on location and call volume.
Are you licensed to do HVAC work in Florissant?
Yes. STL Air Pros is fully licensed and insured to perform HVAC repair and installation in Florissant and throughout St. Louis County. Every technician is NATE-certified, background-checked, and uniformed.
What Florissant Homeowners Say
Real reviews from real customers who live in Florissant and the surrounding area.
Honest, thorough, and fast. They diagnosed a refrigerant leak that two other companies missed. Repaired the leak, recharged the system, and it's been running perfectly ever since. I trust these guys completely.
Tom Brennan
Florissant, MO · November 2024
Need HVAC Service in Florissant?
Call now for same-day service, free estimates, or 24/7 emergency repair. Our team is standing by for Florissant homeowners.
314-328-0008