Long Island HVAC contractor · Nassau & Western Suffolk

Long Island HVAC Repair & Installation, perfected.

Air conditioning and heating repair, installation, replacement and maintenance across Nassau & Western Suffolk — from a Long Island team you'll actually want to call back.

Fully insured 24/7 emergency Same-day service most days
Get your free estimate

✓ Free · No obligation · Same-day slots available

100%
EPA 608-certified techs
33
Towns served
24/7
Emergency dispatch
10yr
Parts warranty
How it works

From "I need help" to
total comfort — in 4 steps.

01

Book in 60 seconds

Pick a time online or call our 24/7 dispatch — confirmed instantly.

02

In-home consult

A senior advisor reviews your home, sizes the system with Manual-J, and prices it on the spot.

03

Clean install

Most installs done in a single day. Floors covered, debris hauled, system started by a senior tech.

04

Comfort, guaranteed

10-year parts warranty, lifetime workmanship guarantee, and a real human when you call.

Elevate your comfort

Why Long Island is going all-electric.

3–4×

More efficient

Modern heat pumps deliver 3–4× more heating energy than they consume — far beyond gas or electric resistance.

$1,000s

In utility & state rebates

PSEG Long Island and NYSERDA incentives on qualifying heat pumps — eligibility is set by each program.

65%

Less electricity

Today's heat pumps reduce electricity use for heating by ~65% versus electric resistance baseboards or furnaces.

0

Greenhouse emissions

All-electric systems eliminate on-site combustion, gas leaks, and CO₂ emissions inside your home.

Cozy Long Island bedroom with ductless mini-split during winter
5°F
Heat pumps deliver full heat down to 5°F outdoor temp — plenty for Long Island winters.
Comfort that adapts

One quiet system.
Every season.

Modern variable-speed heat pumps cool in summer and heat in winter from a single outdoor unit. They're whisper-quiet, dehumidify better than central AC, and run on the cleanest electricity grid Long Island has ever had.

  • Continuous variable-speed comfort — no on/off cycling
  • Indoor sound levels as low as 19 dB (quieter than a whisper)
  • Independent room-by-room temperature control
  • Works flawlessly down to 5°F outside
Explore ductless systems
Electrify your way

One room. One floor.
Or your whole home.

Single-zone01

Single-zone

One outdoor unit, one indoor head. Ideal for a single room, finished basement, or addition.

Hybrid HVAC02

Hybrid HVAC

Pair a heat pump with your existing furnace — electric until temperatures drop, then gas.

Whole-home03

Whole-home

Up to 8 indoor heads on one outdoor unit, or a ducted air handler using existing ducts.

Long Island HVAC Repair technician installing a heat pump
Long Island chooses us

Comfort done right,
the first time.

Our crews live where you live. We know coastal salt-air corrosion, century-old radiator systems, and finished basements that never had ducts. Every install is sized with a Manual-J load calculation, started up by a senior tech, and warrantied for years.

  • Manual-J load calculation on every installation
  • Stocked vans — most repairs done first visit
  • Full scope in writing before you sign
  • Up-front flat-rate pricing, no surprises
More about our team

"Size it with a real Manual J, install it like it's our own house, commission it to spec, and haul the old unit away before we leave."

The promise on every truck · Long Island HVAC Repair
Flexible financing

$0 down.
Comfort starting today.

Through our Synchrony partnership, qualified homeowners get flexible financing with promotional offers available — full terms in writing before you sign — and an answer in under a minute, subject to credit approval.

Promotional offers for qualified buyers
Flexible monthly payment plans
Answers in about 60 seconds
From your neighbors

Trusted by Long Island
families & businesses.

"Called them for Heat Pump Maintenance in Hicksville and they were fast and did a very thorough work."

Sucharu Subedi · Hicksville, NY

Heat pump maintenance

"Had my furnace maintenance done and I’m very happy with the service. The technician was friendly, professional, and took the time to check everything carefully. He explained what he was doing and made sure the furnace was running properly before he left. I’m in Hicksville and it’s nice to find someone local who is reliable and does good work. I would definitely recommend them for furnace maintenance or HVAC service."

Narendra Subedi · Hicksville, NY

Furnace maintenance

"I had a fantastic experience withLong Island HVAC Repair! My ac system was struggling to cool and I noticed a frozen line near the unit. I called for an emergency repair and they were at my home in 90 mins. The technician was professional, quickly located the leak, and had the system running perfectly in no time. Highly recommend for any local Levittown heating repairs!"

Pabitra Pun Bhattarai · Levittown, NY

Emergency AC repair

"Genuine company. That's the short version, but I'll give the whole thing. My AC system started acting up last week and I was already dreading it. Anybody who's had HVAC go down in the summer knows the drill, you call around, everybody's booked, and you're sitting in a hot house for three days waiting on somebody to maybe show up. Called Long Island HVAC Repair and they got a guy out the same day. Same day, in August, on Long Island. I didn't expect that at all. He showed up in the window they told me, which honestly is half the battle with this kind of thing. Took care of the system and it's been running fine ever since. No issues, no having to call them back out. What I appreciated most was that there was no runaround. Nobody dodging my calls, nobody vague about when they'd get there, nobody trying to talk me into a whole new unit I didn't ask about. They came, they handled it, that was it. That's rare enough in this business that it's worth writing about. Like I said, genuine company. They do what they say they're going to do. I'd use them again without thinking twice about it. If you're on the island and your AC goes out on you, these are the people to call."

Bishwo Mainali · Google review

AC repair

"Found Long Island HVAC Repair online after our previous HVAC guy couldn't finish the job, and I'm glad we did. The technician was professional, friendly, and clearly knew what he was doing. He explained everything as he went while installing the split unit in our den, which I appreciated — I wasn't left guessing what was happening or why. The work was finished in the time he estimated, no dragging it out, and when he was done he took the time to show us how to actually use the unit and the remote. They also kept us updated on arrival time and fit us in quickly, which meant a lot given we were already stuck partway through a job somebody else had walked away from. I highly recommend Long Island HVAC Repair LLC."

CJ Harris · Google review

Ductless mini-split installation

"Had a Mitsubishi mini-split system installed recently and honestly couldn’t be happier with how it went. The crew showed up on time, knew exactly what they were doing, and took the time to answer all my questions. They were super respectful of the house and left everything clean when they finished. The system itself is amazing. It cools and heats the place fast, but the best part is how quiet it is. I can barely hear the indoor units, and the outdoor unit is almost silent. Easily one of the best upgrades I’ve made to the house. 5/5 stars!"

David Vides · Google review

Mitsubishi mini-split installation

Verbatim Google reviews. Had us out? Leave a review on Google

Where we work

Proudly serving
all of Long Island.

From the North Shore to the South Shore, Nassau to Western Suffolk — our local crews are stationed across the Island for fast same-day service most days.

30+
Nassau towns
20+
Suffolk towns
See full service area
Active service zones
Same-day service available
Frequently asked

Answers, before you ask.

Across Nassau and Western Suffolk we usually offer same-day service. For true emergencies (no heat, no AC in extreme weather), we dispatch 24/7 — typically on-site within 2–4 hours.

Yes. We partner with Synchrony for flexible financing — promotional offers available, with full terms in writing before you sign. Most homeowners get an answer in under 60 seconds, subject to credit approval.

We're fully insured, and every technician is background-checked, drug-tested, and EPA 608–certified for refrigerant handling. We provide current insurance and certification documentation on request before work begins.

Most systems under 10 years old are worth repairing. We give you an honest repair-vs-replace recommendation in writing — no high-pressure sales — based on age, efficiency, and repair cost.

We install premium variable-speed systems from Mitsubishi, Carrier, Trane, and Lennox, plus value-tier options. We'll recommend the right brand for your home, not the one with the highest commission.

A typical whole-home ductless install runs $12,000–$25,000 before incentives. PSEG Long Island's Clean Heat program offers incentives on qualifying cold-climate heat pumps; check its current terms before you buy. Financing with $0 down is available on approved credit.

Ready when you are

Let's make your home
more comfortable.

Book online in under a minute, or call our 24/7 dispatch — a local technician will be on the way.

Fully Insured 24/7 Service