HVAC Services on Long IslandHeating, cooling & indoor air, perfected.
One Long Island team for everything HVAC — from a midnight no-heat call to a whole-home heat pump install. Fully insured and built by veteran Long Island tradespeople serving Nassau and Western Suffolk.
Fast, honest HVAC repair.
When your system fails, you need a real technician — fast. Our Long Island crews carry the most common parts on every truck and most repairs are completed on the first visit.
Long Island HVAC Repair offers 24/7 emergency repair and same-day service most days for central AC, ductless mini-splits, gas and oil furnaces, boilers, and heat pumps across Nassau and Western Suffolk County. Most no-heat and no-cool calls are resolved on the first visit with flat-rate pricing and a 1-year repair warranty.
- Same-day diagnosis available in most towns
- 24/7 emergency dispatch
- Flat-rate pricing — no surprises
- Trucks stocked with common parts
- 1-year warranty on every repair
AC Repair
Same-day cooling repairs most days across Long Island.
View AC Repair detailsFurnace Repair
Emergency furnace repair, day or night.
View Furnace Repair detailsBoiler Repair & Installation
Boiler repair, cleaning and installation — steam, gas & combi.
View Boiler Repair & Installation detailsPremium systems, engineered for your home.
We design every install around your home — Manual-J load calcs, the right brand for your situation, and a clean, code-compliant install.
We install high-efficiency central AC, ductless mini-splits, gas furnaces, boilers, and cold-climate heat pumps across Long Island. Every install includes Manual-J load calculations, premium equipment from Mitsubishi, Carrier, Trane, Lennox, and Rheem, and up to a 10-year parts warranty with $0 down on approved credit.
- Free in-home consultation
- Manual-J load calculation
- Old-system removal & disposal
- Up to 10-year parts warranty
- $0 down on approved credit
AC Installation
High-efficiency central AC, sized and installed right.
View AC Installation detailsDuctless Mini-Split Installation
Room-by-room comfort with no ductwork required.
View Ductless Mini-Split Installation detailsFurnace Installation
High-efficiency furnaces that lower your gas bill.
View Furnace Installation detailsHeat Pump Installation
Heat pump repair and installation — ducted & ductless.
View Heat Pump Installation detailsTune-ups that prevent breakdowns.
Annual maintenance is required by most manufacturer warranties — and it's the single best way to extend equipment life and lower your utility bills. Our service plans cover heating and cooling year-round.
Annual HVAC tune-ups for Long Island homes include a 21-point inspection, coil cleaning, refrigerant pressure check, electrical test, and filter replacement. Regular maintenance keeps manufacturer warranties valid, lowers energy bills by up to 15%, and prevents the most common summer and winter breakdowns.
- 21-point system inspection
- Coil & condenser cleaning
- Refrigerant level check
- Electrical & safety test
- Maintains factory warranty
From "I need help" to
total comfort — in 4 steps.
Book in 60 seconds
Pick a time online or call our 24/7 dispatch — confirmed instantly.
Diagnose on-site
A senior tech inspects, diagnoses, and quotes flat-rate pricing before any work starts.
Fix or install clean
Repairs are often done same-day. Most installs in 1–2 days. Floors covered, debris hauled.
Comfort, guaranteed
1-yr repair warranty · 10-yr parts on installs · Lifetime workmanship.
Transparent pricing.
No surprises.
Flat-rate quotes presented in writing before any work begins. Full scope and financing terms in writing before you sign.
See full financing & rebatesFinancing
SynchronyPromotional offers available on qualifying installs — full terms in writing before you sign.
Low monthly
Up to 120 moSpread the cost with fixed-rate plans tailored to your budget.
$1,000s
In rebates stackedPSEG Long Island + NYSERDA incentives on qualifying systems — eligibility is set by each program.
Long Island's most reviewed HVAC team.
"Called them for Heat Pump Maintenance in Hicksville and they were fast and did a very thorough work."
"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."
"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!"
Service questions, answered.
We provide repair, installation, and annual maintenance for central AC, ductless mini-splits, gas/oil furnaces, boilers, and cold-climate heat pumps across Nassau County and Western Suffolk.
We charge a flat diagnostic fee that's waived if you approve the repair. All repair quotes are flat-rate and presented in writing before any work begins — no surprise charges.
Yes. Our dispatch line is staffed 24/7. For true no-heat or no-cool emergencies, we typically arrive on-site within 2–4 hours across our Long Island service area.
We install premium variable-speed systems from Mitsubishi, Carrier, Trane, Lennox, and Rheem, plus value-tier options. We repair every major brand including Goodman, Daikin, Bryant, and York.
PSEG Long Island and NYSERDA rebates can stack on qualifying systems, with eligibility and amounts set by each program. The federal IRA heat pump credit ended for installations after 2025.
Yes. We partner with Synchrony Home Financing — $0-down and promotional offers are available on approved credit, and you get the full terms in writing before you sign. Most homeowners get an answer in about 60 seconds.
Repairs come with a 1-year warranty. New installations include up to a 10-year parts warranty and our lifetime workmanship guarantee.
We serve all of Nassau County and Western Suffolk — including Garden City, Hempstead, Hicksville, Massapequa, Huntington, Smithtown, Babylon, and 40+ other towns.
Let's get you
comfortable.
Same-day service most days across Nassau and Western Suffolk. Talk to a real human in under 60 seconds.