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

If you've dealt with contractors in San Lorenzo, CA who gave you a verbal estimate and handed you an invoice that didn't match — or sent someone who clearly wasn't CA licensed — you know exactly why the bar feels low in this market.
When you call FH HVAC in San Lorenzo, CA, you get a CA-licensed technician with NATE certification and EPA 608 credentials. Your quote is in writing before we start. Your guarantee is 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.

Licensed, insured, and guaranteed. Every service below is available in San Lorenzo, CA right now.
System failure in San Lorenzo, CA doesn't wait for business hours. A live dispatcher at +1-844-586-3138 routes the nearest CA-licensed tech to your location and gives you an ETA before you hang up. Most San Lorenzo, CA emergency calls resolve on the first visit. Written quote before we start — always.
Emergency line in San Lorenzo, CAWhether your San Lorenzo, CA home needs a new system or a specific repair, our residential team starts with the Manual J load calculation that determines what your home actually needs. Every installation starts with a proper Manual J load calculation — the step that prevents the common mistake of oversizing, which causes short-cycling and early system failure. All CA permits pulled. Parts and labor both warranted.
Book a San Lorenzo, CA technicianCommercial HVAC failure in San Lorenzo, CA 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 San Lorenzo, CA — coordinated around your operating hours to minimize disruption. Priority response for commercial service agreement clients.
Commercial HVAC in San Lorenzo, CAYour San Lorenzo, CA home's indoor air quality challenges depend on local seasonal patterns. FH HVAC installs and services HEPA filtration, UV germicidal systems, humidity control equipment, and ERVs matched to San Lorenzo, CA's specific climate demands. Most impactful for households managing asthma or recurring respiratory conditions.
Air quality service in San Lorenzo, CAMore San Lorenzo, CA homeowners are choosing heat pumps and ductless systems for additions, garages, and conversions where running ductwork through existing walls isn't practical. Our San Lorenzo, CA technicians are factory-trained on all major brands — Mitsubishi, Daikin, Fujitsu, LG, Bosch — and handle everything from initial installation through refrigerant service.
Ductless install: +1-844-586-3138The San Lorenzo, CA 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.
Maintenance plan in San Lorenzo, CANo mystery, no fine print. This is the exact process for every San Lorenzo, CA job we take on.
A live dispatcher picks up in San Lorenzo, CA — day or night, no exceptions. Not a bot. Not a callback queue. A real person who confirms your ETA before you hang up.
We dispatch from the closest available tech to your San Lorenzo, CA location. Background-checked, NATE certified, EPA 608 credentialed.
After diagnosing your system in San Lorenzo, CA, your technician hands you a written, itemized quote. Nothing starts until you've reviewed and approved it in writing. What you approve is what you pay.
90 days, parts and labor, on your invoice — not a verbal promise, a documented commitment.
Operating standards, not slogans. Everything on this list is policy at FH HVAC in San Lorenzo, CA.
What you approve is what you pay. Always. No post-job surprises in San Lorenzo, CA.
CA license, general liability, and workers' comp — all current, all documented, available on request for any San Lorenzo, CA job.
Regional technician positioning throughout San Lorenzo, CA keeps response times under 60 minutes in most markets — including during peak summer and winter demand.
Every San Lorenzo, CA 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.
Not voicemail. Not a bot. A live dispatcher who confirms your ETA before the call ends.
"I asked for proof of CA licensing before letting anyone in. Two contractors couldn't produce it. FH HVAC sent documentation in under two minutes."
— Verified customer, San Lorenzo, CA"Called FH HVAC in San Lorenzo, CA on a Saturday afternoon, had a tech at the door in under an hour, written quote before they started, invoice matched the quote exactly. I've never had an easier contractor experience in San Lorenzo, CA."
"Our business in San Lorenzo, CA 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."
"The FH HVAC maintenance plan in San Lorenzo, CA found a developing refrigerant leak at our annual spring check. They fixed it at the plan rate. I did the math — fixing it in July as an emergency would have cost significantly more. The plan pays for itself."

Don't sit with a broken system in San Lorenzo, CA 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 San Lorenzo, CA