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Greg Hahn Heating & Air ConditioningHVAC contractor in Decatur, IL

Greg Hahn Heating & Air Conditioning is an HVAC contractor at 4246 W Main St, Decatur, IL 62522, ranked #6 of 61 HVAC contractors in Decatur and rated 4.8 from 13 Google reviews. Open 24 hours a day, 7 days a week.

Decatur, ILUpdated 0 paid placements in any rankingHow we rank

Call (217) 428-4545Website ↗

Key facts

Key facts about Greg Hahn Heating & Air Conditioning
Address4246 W Main St, Decatur, IL 62522Get directions
Phone(217) 428-4545
Websitegreghahnhvac.com
HoursOpen 24 hours, 7 days a week
Google rating4.8 from 13 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Decatur and 3 towns within 25 miles: Mount Zion, Clinton and Taylorville.

Based in Decatur, ILView on map

Opening hours

Opening hours for Greg Hahn Heating & Air Conditioning
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

Greg Hahn Heating & Air Conditioning compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Greg Hahn Heating & Air Conditioning (this business)—604.8 (13)—YesYes
Tica, Inc. Heating and Cooling#4624.3 (69)—YesYes3.9 mi
King-Lar Company#5614.3 (36)—YesYes5.3 mi

See all 61 ranked HVAC contractors in Decatur

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.8from 13 Google reviews

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Questions about Greg Hahn Heating & Air Conditioning

How is Greg Hahn Heating & Air Conditioning ranked in Decatur?

Greg Hahn Heating & Air Conditioning is ranked #6 of 61 HVAC contractors in Decatur by CR Score, with 60 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 Greg Hahn Heating & Air Conditioning’s hours?

Greg Hahn Heating & Air Conditioning 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 Greg Hahn Heating & Air Conditioning serve?

Serves Decatur and 3 towns within 25 miles: Mount Zion, Clinton and Taylorville. 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 Greg Hahn Heating & Air Conditioning?

Greg Hahn Heating & Air Conditioning has a rating of 4.8 from 13 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 Greg Hahn Heating & Air Conditioning?

Call Greg Hahn Heating & Air Conditioning on (217) 428-4545. The business is at 4246 W Main St, Decatur, IL 62522. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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