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ThermodyneHVAC contractor in Belleville, IL

Thermodyne is an HVAC contractor at 300 W Monroe St, Belleville, IL 62220, rated 4.5 from 44 Google reviews. Open Monday to Friday.

Belleville, IL0 paid placements in any rankingHow we rank

Call (618) 398-7886Website ↗

Key facts

Key facts about Thermodyne
Address300 W Monroe St, Belleville, IL 62220Get directions
Phone(618) 398-7886
Websitethermodyne-inc.com
HoursMonday to Friday: 8 AM – 5 PM
Google rating4.5 from 44 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Belleville and 11 towns within 25 miles: Swansea, Fairview Heights, Shiloh, O'Fallon, Centreville, Mascoutah, Collinsville, Cahokia, East Saint Louis, Columbia and Waterloo.

Based in Belleville, ILView on map

Opening hours

Opening hours for Thermodyne
DayHours
Monday8 AM – 5 PM
Tuesday8 AM – 5 PM
Wednesday8 AM – 5 PM
Thursday8 AM – 5 PM
Friday8 AM – 5 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

4.5from 44 Google reviews

Hired Thermodyne? Write a review

Questions about Thermodyne

What are Thermodyne’s hours?

Thermodyne is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Thermodyne serve?

Serves Belleville and 11 towns within 25 miles: Swansea, Fairview Heights, Shiloh, O'Fallon, Centreville, Mascoutah, Collinsville, Cahokia, East Saint Louis, Columbia and Waterloo. 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 Thermodyne?

Thermodyne has a rating of 4.5 from 44 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 Thermodyne?

Call Thermodyne on (618) 398-7886. The business is at 300 W Monroe St, Belleville, IL 62220. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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