Oelerich HVAC
Oelerich HVAC is a HVAC provider serving Mundelein, IL. Rated 4.3★ with 47 Google reviews. See services, review signals, and request a quote.
HVACMundelein, IL
On this page
Company overview
- TradeHVAC
- Service areaMundelein, IL
- Google rating4.3★ (47 reviews)
- Phone(847) 566-7900
- Address309 N Lake St, Mundelein, IL 60060, USA
What customers say
“In the past several years, I had them install a new AC and in the past month a new furnace. The Oelerich family and their team are very professional, immediately responsive to any questions and do…”
“Oelerich HVAC installed a new air conditioner for us a week ago. The whole event was exceptional (as we’ve come to experience from this company over the years). They were here within a couple of hou…”
“New furnace was installed in timely fashion (”
“We’ve been doing business with Oelerich since 2005. We’ve always been satisfied with their service. They’ve installed a furnace, water heater and AC unit over the years. It’s a family business and the…”
“Our AC went out in the middle of a heat wave on a Saturday night. We called Oelerich HVAC and told them that we could endure the heat over the weekend but even so on Sunday morning the company owner,…”
Key highlights
Strengths
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 Oelerich HVAC offer?
Oelerich HVAC provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Mundelein, IL.
What is Oelerich HVAC's rating?
Oelerich HVAC has a 4.3 out of 5 star rating based on 47 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 Oelerich HVAC 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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