Whether your system quit overnight or you've been limping along hoping it'd fix itself, FH HVAC sends a licensed technician to your Dunstable, MA address fast — with a written quote and the parts to finish the job.

If you've ever called an HVAC company in Dunstable, MA and gotten a runaround about pricing, availability, or what's actually wrong with your system, you know exactly why we built FH HVAC the way we did.
Every tech FH HVAC dispatches in Dunstable, MA is locally positioned, MA licensed, NATE certified, and EPA 608 credentialed. They understand the local building stock, the climate demands specific to this area, and the brands most prevalent in Dunstable, MA homes and businesses.
Our written quote comes before work starts. Our 90-day guarantee is on every invoice. That's the whole system. It works because it's simple and we actually follow it.
All six of these services are available in Dunstable, MA, performed by MA-licensed technicians, backed by our written guarantee.
If your HVAC system just stopped working in Dunstable, MA, you don't have time for voicemail or a 48-hour wait list. Calling +1-844-586-3138 connects you to a live Dunstable, MA dispatcher immediately. A licensed technician gets rolling toward your address with an ETA before you hang up. Our trucks carry the most common repair parts for Dunstable, MA's prevalent HVAC systems, so we resolve most Dunstable, MA emergency calls without a return trip. Your written quote comes before we start — always.
Dunstable, MA Emergency Dispatch: +1-844-586-3138 →From a full new installation in your Dunstable, MA home to a targeted repair on an older system, our residential team brings the right tools and the right knowledge of the systems common in this market. We never guess system size in Dunstable, MA. Every new installation starts with a Manual J load calculation. Skip it and you end up with an oversized system that short-cycles and wears out early. All major brands serviced. All MA permits handled.
Book Dunstable, MA Home Visit: +1-844-586-3138 →For businesses in Dunstable, MA, HVAC failure means more than discomfort. In food service, it can mean health code complications. In offices, it means people can't work. FH HVAC's commercial team handles rooftop units, large split systems, VRF and chiller work, and ongoing maintenance agreements for commercial properties throughout Dunstable, MA. Our commercial jobs are coordinated around your operating hours.
Dunstable, MA Commercial Service: +1-844-586-3138 →Dunstable, MA residents deal with indoor air quality challenges that depend on the season — high humidity in summer, dry air in winter, allergens and dust year-round. FH HVAC installs and services HEPA filtration upgrades, whole-home UV germicidal systems, dehumidifiers and ERVs configured for Dunstable, MA's specific conditions. If someone in your Dunstable, MA household manages asthma or allergies, improving indoor air quality is one of the most direct improvements available.
Air Quality Service in Dunstable, MA: +1-844-586-3138 →More Dunstable, MA homeowners are choosing heat pumps and ductless systems for their versatility and long-term efficiency. When you're adding conditioned space in Dunstable, MA without an existing duct system, ductless is usually the cleanest solution. Our technicians are factory-trained on all major brands and service everything from installation to seasonal efficiency verification.
Heat Pump Service in Dunstable, MA: +1-844-586-3138 →The Dunstable, MA maintenance plan customers who call us least often aren't the ones with the newest systems — they're the ones who get tuned up twice a year. The plan covers two annual tune-ups, refrigerant checks, electrical inspection, coil cleaning, priority scheduling, and a 15% parts and labor discount year-round. Members frequently tell us the plan paid for itself on the first avoided repair.
Maintenance Plan in Dunstable, MA: +1-844-586-3138 →


No surprises. No mystery. This is exactly what happens when you call FH HVAC in Dunstable, MA.
A live dispatcher answers in Dunstable, MA — day or night, weekends, holidays. Your location is logged and dispatch starts immediately.
The nearest MA-licensed technician is routed to your address. Most Dunstable, MA customers have a tech on-site in under an hour.
You get the full price in writing before anything starts. No surprises after the work is done.
Completed and covered — 90 days on parts and labor, documented on your invoice. If it fails within the window, we come back at no charge.
Stated as policies, not promises — because promises without systems are just marketing.
Verbal quotes are how Dunstable, MA customers end up with invoices they didn't agree to. Every Dunstable, MA job starts with a written, itemized quote you sign before work begins.
Proximity to Dunstable, MA is intentional, not accidental. Even when everyone's calling in Dunstable, MA, we maintain sub-60-minute response in most locations.
Dunstable, MA licensing, liability coverage, NATE cert, EPA 608. All current, all on file, all available to review before any job starts in Dunstable, MA.
90 days. Parts and labor. No argument. The guarantee appears on your invoice because verbal assurances aren't guarantees.
We staff live dispatchers around the clock in Dunstable, MA specifically because HVAC emergencies don't ask permission. Dispatch is confirmed, not promised.
When demand peaks in Dunstable, MA and general wait times stretch out, plan members have reserved slots. Plus 15% off parts and labor on any repairs caught at service visits.
"In Dunstable, MA on a July weekend with no AC, I expected a two-day wait. FH HVAC had a tech there in under an hour. Same-day fix, exact quoted price. Nothing like I've experienced with other contractors."
"We run a small retail shop in Dunstable, MA and our HVAC went down on a Tuesday during a sale event. FH HVAC had a commercial tech there within the hour, the issue was a failed contactor, and we were back to normal temperature before we lost foot traffic. The price was exactly what they said. Five stars, no question."
"Two years on the FH HVAC maintenance plan in Dunstable, MA. They caught a slow refrigerant leak at the spring tune-up. That one catch saved me an August emergency repair at full price. The plan has been worth it three times over."

Don't sit with a broken system in Dunstable, MA waiting on a callback that may or may not come. Call +1-844-586-3138 right now and speak to a live dispatcher who will get a licensed tech to your door fast.
📞 +1-844-586-3138 — Ductwork Repair in Dunstable, MA, 24/7