Thermal Services, Inc. (TSI)
Thermal Services, Inc. (TSI) is a HVAC provider serving Peoria, IL. Rated 4.9★ with 49 Google reviews. See services, review signals, and request a quote.
HVACPeoria, IL
On this page
Company overview
- TradeHVAC
- Service areaPeoria, IL
- Google rating4.9★ (49 reviews)
- Phone(309) 699-3333
- Address2200 W Altorfer Dr Suite D1, Peoria, IL 61615, USA
Photos
Photos from Thermal Services, Inc. (TSI)
What customers say
“Had issues with my geothermal unit not turning on and freezing up. Called TSI and had someone out immediately. Excellent customer service, very polite and respectful. Diagnosed bad compressor and d…”
“I had a great experience with TSI! From start to finish, their team was friendly, professional, and genuinely respectful of my time. They showed up when they said they would, worked efficiently, and t…”
“I’ve used TSI for routine repairs/inspection of my furnace. Heath is extremely knowledgeable and pricing is very fair. Because of the service they’ve provided me, they were the first ones I called w…”
“Our furnace would not start, within a couple hours TSI was here, found the problem and fixed it. He was polite, friendly and VERY professional! Highly recommend calling TSI for your HVAC and AC needs!”
“The technicians, Dillon and Darrell, were very prompt, courteous, and professional. Dillon replaced my furnace. Darrell replaced my ac-unit. Both units required some extra work as they were very an…”
Key highlights
Strengths
- Highly rated (4.9★ average)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Thermal Services, Inc. (TSI) offer?
Thermal Services, Inc. (TSI) provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Peoria, IL.
What is Thermal Services, Inc. (TSI)'s rating?
Thermal Services, Inc. (TSI) has a 4.9 out of 5 star rating based on 49 Google reviews.
Is this company licensed in Illinois?
All listed providers have a verified Illinois contractor license at time of publication. You can verify on the Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) lookup at https://online-dfpr.micropact.com/Lookup/LicenseLookup.aspx.
Does Thermal Services, Inc. (TSI) offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-22. Reviews refreshed 2026-04-22.
Licensing data: Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) · Company data: verified business records + Google Business profile
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