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Koesterer Heating and Cooling IncHVAC contractor in Granite City, IL

Koesterer Heating and Cooling Inc is an HVAC contractor at 3371 IL-162, Granite City, IL 62040, rated 4.9 from 102 Google reviews. Open Monday to Friday.

Granite City, IL0 paid placements in any rankingHow we rank

Call (618) 451-7500Website ↗

Key facts

Key facts about Koesterer Heating and Cooling Inc
Address3371 IL-162, Granite City, IL 62040Get directions
Phone(618) 451-7500
Websitekoestererhvac.com
HoursMonday to Friday: 7:30 AM – 4 PM
Google rating4.9 from 102 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Granite City and 11 towns within 25 miles: Pontoon Beach, East Saint Louis, Collinsville, Glen Carbon, Maryville, Centreville, Fairview Heights, Cahokia, Wood River, Edwardsville and East Alton.

Based in Granite City, ILView on map

Opening hours

Opening hours for Koesterer Heating and Cooling Inc
DayHours
Monday7:30 AM – 4 PM
Tuesday7:30 AM – 4 PM
Wednesday7:30 AM – 4 PM
Thursday7:30 AM – 4 PM
Friday7:30 AM – 4 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

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.

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.9from 102 Google reviews

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Questions about Koesterer Heating and Cooling Inc

What are Koesterer Heating and Cooling Inc’s hours?

Koesterer Heating and Cooling Inc is open Monday to Friday. Its listed hours are Monday to Friday, 7:30 AM – 4 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Koesterer Heating and Cooling Inc serve?

Serves Granite City and 11 towns within 25 miles: Pontoon Beach, East Saint Louis, Collinsville, Glen Carbon, Maryville, Centreville, Fairview Heights, Cahokia, Wood River, Edwardsville and East Alton. 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 Koesterer Heating and Cooling Inc?

Koesterer Heating and Cooling Inc has a rating of 4.9 from 102 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 Koesterer Heating and Cooling Inc?

Call Koesterer Heating and Cooling Inc on (618) 451-7500. The business is at 3371 IL-162, Granite City, IL 62040. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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