Heating System in the St. Louis Area
Need heating system repair or replacement now? We help homeowners across the St. Louis Area keep warm with expert furnace installation, heating repair, and maintenance. Serving the region, including St. Louis, St. Charles, and Chesterfield. We are family-owned since 1969, a Carrier Factory Authorized Dealer, and hold a 4.9 rating from 2,026 reviews. We pull required permits and offer 24/7 emergency service. As temps drop, schedule service or a free furnace estimate today.
Each image is a real worksite photo, reflecting the quality and dedication in every project.
Special Offers & Promotions
Estimates are free for heater, furnace, or boiler installation.
- free estimate
Free quote for water heater installation and replacement
- Same-day availability
- 24/7 service
Schedule your FREE estimate for furnace replacement and installation with Air Comfort Service, Inc.; serving St. Louis & St. Charles.
- Free estimate
Why Choose Us
Why Homeowners Recommend Us
"Installed a completely new heating and a/c system. On time, skilled, friendly, and reliable."
"Air comfort responded right away when we had no heat. The repair was done in a very short time."
"They installed a new HVAC system and duct work. Professional work done right. No shortcuts."
Answers to Common Questions
View All FAQsHow much does heating system repair typically cost for homeowners?
Heating system repair cost is determined after an on-site diagnosis because the failed part, labor time, and system type drive the price. We don’t publish flat rates, but Air Comfort Service, Inc. offers $55 off any service repair and provides transparent pricing with no hidden fees. Our team services homes across the St. Louis area, so we see everything from simple furnace ignitors to complex boiler controls; a stuck inducer can look like a bad board until we meter it out. If a unit has repeated failures or a major safety issue, like a cracked heat exchanger, replacement is usually the safer, smarter path; free estimates are available for new heating installations.
What most affects price:
- Component needed (ignitors, sensors, blower motors, control boards, valves, pumps)
- System type/age (furnace, boiler, heat pump, ductless)
- After-hours emergency vs. scheduled visit
- Warranty coverage and code-required corrections
Schedule a diagnostic visit so a technician can quote the exact repair before any work.
<br />Updated: 2026-02-13
<br />Need help in Saint Louis, MO? Call 3148148455 or book online.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURQbVp2aEVBEAE!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgIDPmZvhEA%7CCgwI-qnTvQYQ-KTiwwE%7C?hl=en-GB[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUR2NE0zc3d3RRAB!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgIDv4M3swwE%7CCgwIusGBuwYQ8OGMlwM%7C?hl=en-GB[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURlOHV6Sl9RRRAB!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgIDe8uzJ_QE%7CCgwImbT9mQYQ2In70AM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNwNXRuaGlBRRAB!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgICp5tnhiAE%7CCgwIgfmrpgYQ6MGJtgI%7C?hl=en-US[4] https://www.aircomfortservice.com/hvacmaintenance/[5] https://www.aircomfortservice.com/heating/heater-repair/[6] https://www.aircomfortservice.com/heating-system-maintenance/[7] https://www.aircomfortservice.com/our-service-areas/eureka-hvac/[8] https://www.aircomfortservice.com/our-service-areas/wentzville-hvac/[9] https://www.aircomfortservice.com/our-service-areas/webster-groves-hvac/[10] https://www.aircomfortservice.com/emergencyheating/[11] https://www.aircomfortservice.com/our-service-areas/ballwin-hvac/How much does furnace replacement typically cost for homeowners?
Furnace replacement cost for homeowners varies by equipment and installation scope, and Air Comfort Service, Inc. confirms final pricing after an in-home evaluation. The biggest driver is properly sizing the furnace and choosing an efficiency level that fits your home and budget. If venting changes or duct fixes, or a new furnace cabinet are needed, that will add to the cost. Our team regularly handles required permits for installations across the St. Louis metro, which can affect project steps and cost. Free estimates are available for furnace installation and replacement. If your current unit is unsafe or breaking down often, replacement is usually the smarter long-term move; if it’s safe and only needs a small fix, repair or monitor instead.
Key factors that set the final price:
- Furnace capacity and efficiency rating
- Ductwork modifications or sealing needs
- Venting or flue upgrades and condensate handling
- Gas line, electrical, thermostat, or indoor air quality add-ons
Schedule an in-home assessment to receive a written, line-item estimate tailored to your home.
<br />Updated: 2026-02-13
<br />Need help in Saint Louis, MO? Call 3148148455 or book online.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURQbVp2aEVBEAE!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgIDPmZvhEA%7CCgwI-qnTvQYQ-KTiwwE%7C?hl=en-GB[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUR2NE0zc3d3RRAB!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgIDv4M3swwE%7CCgwIusGBuwYQ8OGMlwM%7C?hl=en-GB[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURlOHV6Sl9RRRAB!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgIDe8uzJ_QE%7CCgwImbT9mQYQ2In70AM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNwNXRuaGlBRRAB!2m1!1s0x0:0xaf773709578aacc6!3m1!1s2@1:CIHM0ogKEICAgICp5tnhiAE%7CCgwIgfmrpgYQ6MGJtgI%7C?hl=en-US[4] https://www.aircomfortservice.com/hvacmaintenance/[5] https://www.aircomfortservice.com/heating/heater-repair/[6] https://www.aircomfortservice.com/heating-system-maintenance/[7] https://www.aircomfortservice.com/our-service-areas/eureka-hvac/[8] https://www.aircomfortservice.com/our-service-areas/wentzville-hvac/[9] https://www.aircomfortservice.com/our-service-areas/webster-groves-hvac/[10] https://www.aircomfortservice.com/emergencyheating/[11] https://www.aircomfortservice.com/our-service-areas/ballwin-hvac/
Helpful Tips & Maintenance Advice
View All BlogsOakville, MO Heating System Repair & Service
Estimated Read Time: 11 minutes
When your home needs heating system services in Oakville, MO, you want speed, honesty, and lasting results. We deliver all three. From 24/7 emergency furnace repair to precision maintenance and code-compliant installations, Air Comfort Service, Inc. keeps Oakville ...
Service Areas We Cover
What areas do you serve for heating system?
We serve homeowners across the St. Louis Area, including St. Louis, St. Charles, and Chesterfield. See the full list of communities we cover below.