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O'Fallon Heating Air ConditioningHVAC contractor in O'Fallon, MO

O'Fallon Heating Air Conditioning is an HVAC contractor at 991 Waterbury Falls Dr, O'Fallon, MO 63368, ranked #49 of 293 HVAC contractors in O'Fallon and rated 4.8 from 26 Google reviews. Open 7 days a week.

O'Fallon, MOUpdated 0 paid placements in any rankingHow we rank

Call (636) 200-1560

Key facts

Key facts about O'Fallon Heating Air Conditioning
Address991 Waterbury Falls Dr, O'Fallon, MO 63368Get directions
Phone(636) 200-1560
HoursMonday to Friday: 7 AM – 8 PM; Saturday and Sunday: 8 AM – 7 PM
Google rating4.8 from 26 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves O'Fallon and 11 towns within 25 miles: Weldon Spring, Dardenne Prairie, Saint Peters, Lake Saint Louis, Chesterfield, Wildwood, Wentzville, Ellisville, Ballwin, Saint Charles and Manchester.

Based in O'Fallon, MOView on map

Opening hours

Opening hours for O'Fallon Heating Air Conditioning
DayHours
Monday7 AM – 8 PMevening
Tuesday7 AM – 8 PMevening
Wednesday7 AM – 8 PMevening
Thursday7 AM – 8 PMevening
Friday7 AM – 8 PMevening
Saturday8 AM – 7 PMevening
Sunday8 AM – 7 PMevening
  • Open evenings (after 6 PM)
  • Open Saturdays
  • Open Sundays

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

O'Fallon Heating Air Conditioning compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
O'Fallon Heating Air Conditioning (this business)—584.8 (26)—YesYes
SmartHouse Heating and Cooling#47584.9 (476)—YesYes21.0 mi
Wyzer Heating and Cooling 🔥❄️👨‍🔧#48585.0 (25)—YesYes3.7 mi
Brown's#50584.7 (37)—YesYes13.8 mi

See all 293 ranked HVAC contractors in O'Fallon

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.8from 26 Google reviews

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Questions about O'Fallon Heating Air Conditioning

How is O'Fallon Heating Air Conditioning ranked in O'Fallon?

O'Fallon Heating Air Conditioning is ranked #49 of 293 HVAC contractors in O'Fallon by CR Score, with 58 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are O'Fallon Heating Air Conditioning’s hours?

O'Fallon Heating Air Conditioning is open 7 days a week. Its listed hours are Monday to Friday, 7 AM – 8 PM; Saturday and Sunday, 8 AM – 7 PM. On Saturdays it is open 8 AM to 7 PM, and on Sundays 8 AM to 7 PM. Hours come from the business listing; holiday hours may differ.

What areas does O'Fallon Heating Air Conditioning serve?

Serves O'Fallon and 11 towns within 25 miles: Weldon Spring, Dardenne Prairie, Saint Peters, Lake Saint Louis, Chesterfield, Wildwood, Wentzville, Ellisville, Ballwin, Saint Charles and Manchester. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about O'Fallon Heating Air Conditioning?

O'Fallon Heating Air Conditioning has a rating of 4.8 from 26 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact O'Fallon Heating Air Conditioning?

Call O'Fallon Heating Air Conditioning on (636) 200-1560. The business is at 991 Waterbury Falls Dr, O'Fallon, MO 63368. Ask for a written estimate before any work starts.

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