Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateHVAC Company in Massapequa, NY
Dalton Heating & Air handles HVAC work across Massapequa, NY, where the job almost always comes down to one thing: corrosion. The mix of 1950s-to-1970s split-levels and Capes, much of the original ductwork still in place, and salt air pushing up from the Great South Bay means our technicians spend more time chasing rust-related failures here than in any inland part of Long Island. If your AC quit or your furnace is short-cycling, call (516) 559-4840 and a real person answers, day or night.
Why Massapequa Homes Are Different
Massapequa’s housing stock is overwhelmingly mid-century: Cap Cod styles, split-levels, and ranches built largely between 1950 and 1980. Many of those homes still run original galvanized ductwork, and a good number of them had oil-fired boilers converted to forced-air gas heat decades ago. The conversions were rarely done with new duct sizing, so airflow problems are common – rooms that never quite reach set temperature, returns that pull air from the wrong place, and static pressure that strains blower motors.
Then there’s the salt. Homes south of Sunrise Highway sit close enough to the Great South Bay that condenser fins pit and contactors corrode noticeably faster than in North Massapequa or up in Levittown. We check for that on every call, because a pitted contactor will arc and fail a compressor if it goes unnoticed. Winters bring freeze-thaw cycles that stress outdoor units and crack older condensate lines. The takeaway for Massapequa homeowners is simple: annual maintenance here isn’t a suggestion, it’s what keeps a five-year-old unit from failing like a fifteen-year-old one.
Styles & brands we work with







Our Main Massapequa Services
Most calls we take in Massapequa come down to two things: an AC system that won’t cool in July, or a furnace that won’t fire in January. Here’s what each job looks like in this town.
AC Repair in Massapequa
When an AC unit in Massapequa stops cooling, the first thing our tech checks is the condenser. In the neighborhoods south of Sunrise Highway, salt air eats through fins and electrical connections faster than anywhere inland, and a corroded contactor is a frequent culprit. We carry replacement contactors, capacitors, and fan motors on the truck, so most repairs are done in one visit. Refrigerant leaks get located with an electronic detector, not guesswork. Every repair is priced in writing before we start and guaranteed in writing for a full year. See our AC Repair in Massapequa page for full pricing and what’s covered.

Heat Pump Installation in Massapequa
Heat pumps make sense in Massapequa for a lot of reasons: they cool in summer and heat in the shoulder seasons, and newer cold-climate units hold their output down into the teens. Because so many homes here still have converted boiler-to-ducted setups, a heat pump install often includes duct sealing or a smaller ducted-air handler matched to existing runs. We’ll size it properly – no rule-of-thumb tonnage – and give you a written fixed price before any equipment gets ordered. See Heat Pump Installation in Massapequa for what a typical install involves in this area.

Furnace Repair in Massapequa
Most furnace failures in Massapequa trace back to three things: a failed ignitor, a dirty flame sensor, or a heat exchanger that has rusted through from years of humid, salt-adjacent air. The first two are quick fixes. A cracked heat exchanger is a different story – it’s a carbon monoxide risk and the furnace gets shut down until it’s replaced. We inspect that on every heating call, no exceptions. Repairs are quoted in writing up front and covered by a one-year written guarantee. Full diagnosis and pricing details are on our Furnace Repair in Massapequa page.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Massapequa
Our techs are factory-trained on Rheem, York, Daikin, and Bryant equipment, and we stock common parts for those brands on our trucks. That means less waiting on a supply-house run when your heat goes out in February. See our brands for the full list of systems we service.
See the difference
Before
After
Before
After
Before
AfterPricing for HVAC Company in Massapequa, NY
| Service | Typical range in Massapequa |
|---|---|
| AC repair (minor – capacitor, contactor) | $150 – $650 |
| AC repair (major – compressor, coil) | $350 – $650 |
| Furnace repair (minor – ignitor, flame sensor) | $150 – $700 |
| Furnace repair (major – blower, control board) | $250 – $700 |
| AC installation (full system, 2-3 ton) | $3,500 – $7,500 |
| Annual tune-up | $80 – $200 |
What pushes a repair toward the top of those ranges in Massapequa is almost always corrosion damage – a condenser coil that’s been pitted by salt air costs more to replace than a simple capacitor swap. Whatever the job, the price is in writing before we touch a tool. No exceptions, no add-ons at the door.
Neighborhoods We Serve in Massapequa
We work throughout Massapequa, from the blocks north of the Southern State down to the waterfront streets south of Merrick Road. Typical response time is same-day for AC and furnace emergencies, with a scheduled window for installations.
- North Massapequa
- Massapequa Shores
- Harbor Green
- Biltmore Shores
- East Massapequa
Service Area – Cities Near Massapequa
Dalton Heating & Air serves Massapequa and the surrounding South Shore communities. If you’re in Massapequa Park, NY, Wantagh, NY, Merrick, NY, or Levittown, NY, our crews cover those areas as well. Dispatch and scheduling are coordinated from the brand’s New York City office, with local crews serving Massapequa directly.
Serving Massapequa, NY - Our Local Coverage Area
We’re based in the Massapequa area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Massapequa
Same-day for most AC and furnace emergencies. When your heat is out in February or your AC quits during a July heat wave, we get a truck to your Massapequa address that day. Installations and non-urgent repairs get a scheduled window, and we arrive inside that window. Call (516) 559-4840 and we’ll tell you exactly when we can be there.
Most furnace and AC replacements in Massapequa require a permit from the Town of Oyster Bay, and installers must be licensed. We handle permit paperwork on installations as part of the job, and our crews are state-licensed and insured. Repairs and tune-ups typically don’t require a permit.
We cover all of Massapequa, plus Massapequa Park, Wantagh, Merrick, Levittown, and the surrounding South Shore neighborhoods. If you’re unsure whether we cover your street, call (516) 559-4840 and the person who answers will tell you in about ten seconds.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Massapequa Customers Say
"No pressure to upgrade. He said the old unit had a few years left and fixed the actual problem."
- Jimmy V."Changed the filter size and added a better filter rack. Simple and useful advice."
- Rhonda C."Furnace tune-up. He cleaned the burners and flame sensor, tested for carbon monoxide, and gave me a clear report."
- Lisa M.