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Koerner & SonsHVAC contractor in Du Quoin, IL

Koerner & Sons is an HVAC contractor at 14 N Oak St, Du Quoin, IL 62832, ranked #18 of 46 HVAC contractors in Du Quoin and rated 4.0 from 4 Google reviews. Open Monday to Saturday.

Du Quoin, ILUpdated 0 paid placements in any rankingHow we rank

Call (618) 542-3857

Key facts

Key facts about Koerner & Sons
Address14 N Oak St, Du Quoin, IL 62832Get directions
Phone(618) 542-3857
HoursMonday to Friday: 7 AM – 8 PM; Saturday: 7 AM – 9 PM
Google rating4.0 from 4 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Du Quoin and 7 towns within 25 miles: Pinckneyville, Benton, Murphysboro, Herrin, West Frankfort, Carterville and Carbondale.

Based in Du Quoin, ILView on map

Opening hours

Opening hours for Koerner & Sons
DayHours
Monday7 AM – 8 PMevening
Tuesday7 AM – 8 PMevening
Wednesday7 AM – 8 PMevening
Thursday7 AM – 8 PMevening
Friday7 AM – 8 PMevening
Saturday7 AM – 9 PMevening
SundayClosed
  • Open evenings (after 6 PM)
  • Open Saturdays
  • 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.

Compare nearby HVAC contractors

Koerner & Sons compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Koerner & Sons (this business)—554.0 (4)—YesNo
Swanson Heating and Air#16554.7 (15)—YesYes20.1 mi
M and M Heating and Cooling#17554.5 (23)—YesYes14.7 mi
J C's Air Conditioning#19545.0 (26)—NoNo8.8 mi

See all 46 ranked HVAC contractors in Du Quoin

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.0from 4 Google reviews

Hired Koerner & Sons? Write a review

Questions about Koerner & Sons

How is Koerner & Sons ranked in Du Quoin?

Koerner & Sons is ranked #18 of 46 HVAC contractors in Du Quoin by CR Score, with 55 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 Koerner & Sons’ hours?

Koerner & Sons is open Monday to Saturday. Its listed hours are Monday to Friday, 7 AM – 8 PM; Saturday, 7 AM – 9 PM. On Saturdays it is open 7 AM to 9 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Koerner & Sons serve?

Serves Du Quoin and 7 towns within 25 miles: Pinckneyville, Benton, Murphysboro, Herrin, West Frankfort, Carterville and Carbondale. 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 Koerner & Sons?

Koerner & Sons has a rating of 4.0 from 4 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 Koerner & Sons?

Call Koerner & Sons on (618) 542-3857. The business is at 14 N Oak St, Du Quoin, IL 62832. Ask for a written estimate before any work starts.

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