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Stay Cool Climate ControlHVAC contractor in O'Fallon, MO

Stay Cool Climate Control is an HVAC contractor at 407 Sonderen St, O'Fallon, MO 63366, ranked #2 of 293 HVAC contractors in O'Fallon and rated 5.0 from 1,068 Google reviews. Open 24 hours a day, 7 days a week.

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

Call (636) 425-3398Website ↗

Key facts

Key facts about Stay Cool Climate Control
Address407 Sonderen St, O'Fallon, MO 63366Get directions
Phone(636) 425-3398
Websitestaycool-hvac.com
HoursOpen 24 hours, 7 days a week
Google rating5.0 from 1,068 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: Dardenne Prairie, Saint Peters, Lake Saint Louis, Weldon Spring, Wentzville, Saint Charles, Chesterfield, Wildwood, Bridgeton, Maryland Heights and Ellisville.

Based in O'Fallon, MOView on map

Opening hours

Opening hours for Stay Cool Climate Control
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

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

Stay Cool Climate Control compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Stay Cool Climate Control (this business)—665.0 (1,068)—YesYes
Jerry Kelly Heating & Air Conditioning#1664.9 (6,530)—YesYes6.2 mi
Hoock's Heating & Cooling#3655.0 (768)—YesYes14.0 mi
Hosack Plumbing, Heating & Cooling#4655.0 (696)—YesYes0.3 mi

See all 293 ranked HVAC contractors in O'Fallon

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 1,068 Google reviews

Hired Stay Cool Climate Control? Write a review

Questions about Stay Cool Climate Control

How is Stay Cool Climate Control ranked in O'Fallon?

Stay Cool Climate Control is ranked #2 of 293 HVAC contractors in O'Fallon by CR Score, with 66 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 Stay Cool Climate Control’s hours?

Stay Cool Climate Control is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Stay Cool Climate Control serve?

Serves O'Fallon and 11 towns within 25 miles: Dardenne Prairie, Saint Peters, Lake Saint Louis, Weldon Spring, Wentzville, Saint Charles, Chesterfield, Wildwood, Bridgeton, Maryland Heights and Ellisville. 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 Stay Cool Climate Control?

Stay Cool Climate Control has a rating of 5.0 from 1,068 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 Stay Cool Climate Control?

Call Stay Cool Climate Control on (636) 425-3398. The business is at 407 Sonderen St, O'Fallon, MO 63366. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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