Call 24/7: (603) 555-0142

Licensed & Insured NATE-Certified Technicians

Heating · Cooling · Air Quality

Comfort you can
count on.

Family-owned heating, cooling and air-quality experts serving Massachusetts and New Hampshire for 20+ years. Fast, honest service with upfront flat-rate pricing. No surprises, no pressure, just comfort restored.

  • Licensed & insured
  • NATE-certified
  • 24/7 emergency
20+
Years serving MA & NH
10000+
Homes kept comfortable
4.9★
1,200+ Google reviews
24/7
Emergency service

What we do

Total home comfort, one trusted team

From a midnight no-cool emergency to a planned system upgrade, our NATE-certified techs handle it all. Fast, clean, and done right the first time.

Technician inspecting and repairing an outdoor air conditioner condenser unit

AC repair & install

Same-day cooling repairs and right-sized, high-efficiency new installs that lower your summer bills.

Technician's hands adjusting and servicing a home heating boiler system with instruments

Heating & furnace

Furnace and heat-pump repair, tune-ups and replacement so your home stays warm through every New England cold snap.

HVAC technician testing an air conditioning unit with a multimeter during a tune-up

Maintenance plans

Seasonal tune-ups that catch small problems early, extend equipment life and keep your warranty valid.

Wall-mounted air conditioning unit in a clean bright home interior

Indoor air quality

Whole-home filtration, humidifiers and purifiers that clear out dust, allergens and dry winter air.

Why Summit

Reliability you can feel, from the first call

No-surprise pricing

Upfront flat-rate pricing, in writing

You approve the price before any work begins: flat-rate, not by the hour. No watching the clock, no inflated invoice at the end. The number we quote is the number you pay.

  • Quoted before we start
  • Flat rate, never hourly
  • Free, no-pressure estimates

Always available

Fast same-day service, 24/7 emergencies

A broken furnace at 2 a.m. in January is not a "next week" problem. We answer the phone around the clock and aim to be at your door the same day, fully stocked to fix it on the first visit.

  • Live answer, day or night
  • Same-day appointments
  • Trucks stocked for one-trip fixes

Comfort now, pay later

Flexible financing on new systems

A new system should not mean a financial cold sweat. With approved credit you can install now and pay monthly, including 0% options, so you stay comfortable without draining your savings.

  • 0% financing options
  • Quick online approval
  • Plans that fit your budget

People you can trust

Trusted, background-checked local techs

The same friendly faces from your own community show up to your door: uniformed, background-checked and trained to respect your home. Shoe covers on, work area cleaner than we found it.

  • Background-checked & drug-tested
  • Uniformed, on-time pros
  • We treat your home with respect
Homeowner in plaid shirt shaking hands with a Summit technician in work uniform

Flexible financing

New system now, pay monthly

Don't let a failing system wait. With approved credit you can install today and spread the cost over easy monthly payments, including 0% financing options. Apply online in minutes and get an answer fast.

  • 0% APR options on qualifying systems
  • Quick, soft-pull online approval
  • Plans built around your monthly budget
Check your financing options

Comfort Club membership

Stay ahead of breakdowns for $19/month

Members keep their systems running longer, skip the diagnostic fees, and never wait in line during a heat wave or cold snap. Join, book and manage everything online.

Most popular
$19/ month

Per household · cancel anytime

Join the Comfort Club

Or prepay annually for $199 and save $29.

Everything members get

  • Two precision tune-ups every year (AC + furnace)
  • Priority scheduling: front of the line, even in a heat wave
  • 15% off all repairs and parts
  • No diagnostic / trip fee, ever
  • Filters checked and swapped at every visit
  • Fully transferable if you sell your home

Sample pricing for this demo. Membership bills monthly with secure online payments and easy cancellation; financing is subject to approved credit.

Proudly local

Serving Massachusetts and New Hampshire, neighbor to neighbor

We're not a faceless franchise routed from out of state. Summit is based right here in Nashua, and our trucks roll through the same neighborhoods we live in. If you're in the MA-NH border region, chances are we've already helped someone on your block.

  • Nashua
  • Manchester
  • Salem
  • Derry
  • Merrimack
  • Lowell
  • Andover
  • Methuen
  • Lawrence
  • Hudson
  • Tewksbury
  • Dracut

Not sure if you're in our zone? Give us a call and we'll let you know straight away.

In their words

MA & NH homeowners count on Summit

A few sample reviews from the kind of neighbors we get to help every week.

Our AC died during the first 95-degree week of summer. Summit had a tech out the same afternoon, gave me a flat price before touching anything, and had us cool again in under an hour. No upsell, no nonsense.
Karen M. Nashua, NH
Furnace quit at 11pm in January with a newborn in the house. They actually answered the phone, walked me through staying warm, and were at the door first thing. These are good, honest people.
Derek W. Salem, NH
We joined the Comfort Club two years ago and it has paid for itself. The tune-ups are thorough, they remember us by name, and there is never a surprise fee. Highly recommend to anyone in the area.
Priya S. Lowell, MA

How it works

Comfort restored in four simple steps

No confusion, no pressure, no surprise invoices. Just a straightforward path from problem to fixed.

  1. 01

    Book

    Call 24/7 or request a visit online. We confirm a same-day or next-day window that works for you.

  2. 02

    We diagnose

    A NATE-certified tech arrives on time, inspects your system thoroughly, and finds the real problem.

  3. 03

    Upfront quote

    You get a clear, flat-rate price in writing, with your options explained, before any work starts.

  4. 04

    Fixed right

    We do the job cleanly, test it twice and tidy up. You stay comfortable, with no surprise on the bill.

No-heat or no-cool?

Need it fixed today?

Our line is open 24/7 and same-day appointments are available now. Get a free, no-pressure quote, or call and talk to a real person right now.