The question isn't whether you need Furnace Repair service in Corunna, MI — it's which contractor you trust to do it right. FH HVAC's answer: a written quote before we start, a MI-licensed technician at your door fast, and a 90-day guarantee documented on every invoice.

The Furnace Repair contractor market in Corunna, MI has a real accountability problem. Most homeowners have experienced it: verbal estimates, inconsistent technician quality, invoices that surprise them.
FH HVAC operates on a different standard in Corunna, MI. Every technician we send holds an active MI license, NATE certification, and a current EPA 608 refrigerant credential. Every quote is written and itemized before any work starts. Every completed job carries a 90-day guarantee documented on your invoice. Calling +1-844-586-3138 at any hour connects you to a real person who confirms your ETA before you hang up.

All six services are available in Corunna, MI — performed by MI-licensed technicians and backed by written pricing and our 90-day guarantee.
Your HVAC system quit in Corunna, MI and you need someone right now. Calling +1-844-586-3138 connects you to a live dispatcher who routes a MI-licensed technician toward your address immediately — not a callback promise. Our trucks carry the parts most common in Corunna, MI's HVAC systems, so first-visit repairs are the standard, not the exception.
Corunna, MI Emergency: +1-844-586-3138From a full system replacement to a targeted repair in your Corunna, MI home, our residential technicians don't guess system size. Skipping this step is how contractors install wrongly sized systems that fail in 10 years instead of lasting 20. All MI permits pulled. Parts and labor both warranted.
Book a Corunna, MI technicianCommercial HVAC failure in Corunna, MI costs more than discomfort — it costs you customers, productivity, and sometimes compliance. Our commercial team handles rooftop units, large split systems, VRF and chiller work across Corunna, MI — coordinated around your operating hours to minimize disruption. Priority response for commercial service agreement clients.
Corunna, MI commercial pricingIndoor air quality in Corunna, MI is affected by the specific seasonal conditions here — humidity patterns, allergen load, and how airtight homes tend to be in this climate. We install HEPA filtration upgrades, UV germicidal systems, dehumidifiers, humidifiers, and ERVs configured for this region's conditions. Most impactful for households managing asthma or recurring respiratory conditions.
Indoor air quality: +1-844-586-3138More Corunna, MI homeowners are choosing heat pumps and ductless systems for additions, garages, and conversions where running ductwork through existing walls isn't practical. Our Corunna, MI technicians are factory-trained on all major brands — Mitsubishi, Daikin, Fujitsu, LG, Bosch — and handle everything from initial installation through refrigerant service.
Heat pump service in Corunna, MIThe Corunna, MI systems that run reliably for 20 years get maintained twice a year. The ones that fail early usually don't. Two tune-ups annually, priority dispatch year-round, 15% off parts and labor, refrigerant checks, coil cleaning, and a written condition report every visit.
Plan details: +1-844-586-3138Four steps. No surprises. That's the whole model.
Real person answers. Not voicemail. You get an ETA for Corunna, MI before you hang up.
The nearest MI-licensed technician is routed to your Corunna, MI address. Every credential verified before they arrive at your door.
You get the full cost in writing before anything begins in Corunna, MI. Nothing starts until you've reviewed and approved it in writing. What you approve is what you pay.
90 days, parts and labor, documented. If it fails within the window, we return at no charge.
Operating standards, not slogans. Everything on this list is policy at FH HVAC in Corunna, MI.
Verbal estimates in Corunna, MI that change by invoice are how contractors exploit homeowners who don't know to ask. We give you a written quote first. Itemized, signed, and binding before we begin.
MI license, general liability, and workers' comp — all current, all documented, available on request for any Corunna, MI job.
We maintain staffing close to Corunna, MI so average on-site time stays under 60 minutes, even when demand is high.
Every Corunna, MI repair we complete carries a 90-day parts and labor guarantee printed on your invoice. If it fails, we return at no charge — no debate required.
Calling +1-844-586-3138 at 2 AM in Corunna, MI gets a person who routes a technician immediately.
"I asked for proof of MI licensing before letting anyone in. Two contractors couldn't produce it. FH HVAC sent documentation in under two minutes."
— Corunna, MI homeowner, new system installation"I've dealt with three other HVAC contractors in Corunna, MI in the past two years. Every one had some billing issue, some miscommunication, some problem. FH HVAC showed up fast, gave me a written quote, and billed me exactly that amount. This should be the standard."
"Our business in Corunna, MI had an HVAC failure during a client event. I didn't think anyone would respond that fast on a Friday evening. FH HVAC had a commercial technician there in 50 minutes, diagnosed and fixed within two hours. Nothing we planned had to be cancelled."
"Two years on the maintenance plan in Corunna, MI. At the spring tune-up this year they found a slow refrigerant leak in my evaporator coil. Caught and fixed at the maintenance pricing. That would have been an emergency call in August at double the cost."

Don't sit with a broken system in Corunna, MI while waiting on a contractor who may or may not show up. Call +1-844-586-3138 — a real dispatcher picks up, routes the nearest tech, and gives you an ETA before you hang up.
📞 +1-844-586-3138 — Furnace Repair in Corunna, MI