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Long Island Heating & AC Repair, Installation & Maintenance

One Hour Heating & Air Conditioning® of Long Island is the premier provider of HVAC services for Long Island, including Suffolk and Nassau counties. Our team is highly trained, courteous, and always on time! We’ve earned our reputation for providing great service by adhering to a strict code of ethics and never settling for providing less than a customer deserves. Besides sending a highly trained tech to your home, we also send a well-stocked vehicle, which means our experts can complete most jobs in just one visit.

All our heating and AC services are backed by the UWIN Guarantee, which ensures that we use only high-quality materials and solutions for your home's comfort. Our team provides HVAC repair and installation services to residents in Nassau and Suffolk counties, including Deer Park, Bay Shore, Melville, Huntington, Medford, Riverhead, and all throughout Long Island. Whether your heater breaks on the coldest night of the year or your system needs regular maintenance, One Hour Heating & Air Conditioning® of Long Island is ready to help!

The Homeowner’s Choice for AC, Heater & Furnace Repairs in Long Island

We’ve gathered a loyal base of customers because of our dedication to their happiness. We provide neighborly service because we are your neighbors! One Hour Heating & Air Conditioning® of Long Island might carry the name of a nationally-recognized HVAC brand, but we’re an independently owned and operated business in Deer Park, NY. As a One Hour location, we provide some of the best guarantees in the industry. We promise that you’ll be 100% satisfied with our heating and air conditioning services, that we’ll show up on time, and that we’ll provide upfront prices! If any aspect of our work doesn’t meet your expectations, we’ll make it right at no cost to you! You’ve got nothing to lose, call our Long Island HVAC service pros today!

Always On Time... Or You Don't
Pay A Dime

We Have A Reputation For Being Punctual, Friendly, and Knowledgeable

    “Ray was very helpful answering my questions. He was professional and very friendly. A+ service!”

    “Love having Jason in our home.”

    “Josh was very helpful and informative as well as extremely friendly. He went through everything very thoroughly with me and my daughter. I enjoyed his kind attitude and his wonderful work.”

    “We have had the pleasure of having a few people from One Hour out to our house recently. All employees are super nice and professional and it was nice getting a call when they were on their way.”

    “Very happy with the service”

    “Great service”

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  • Areas We Serve
    • Albertson
    • Amagansett
    • Amityville
    • Aquebogue
    • Atlantic Beach
    • Babylon
    • Baldwin
    • Bay Shore
    • Bayport
    • Bayville
    • Bellmore
    • Bellport
    • Bethpage
    • Blue Point
    • Bohemia
    • Brentwood
    • Bridgehampton
    • Brightwaters
    • Brookhaven
    • Calverton
    • Carle Place
    • Cedarhurst
    • Center Moriches
    • Centerport
    • Central Islip
    • Cold Spring Harbor
    • Commack
    • Copiague
    • Cutchogue
    • Deer Park
    • East Hampton
    • East Islip
    • East Marion
    • East Meadow
    • East Moriches
    • East Northport
    • East Norwich
    • East Quogue
    • East Rockaway
    • Eastport
    • Elmont
    • Far Rockaway
    • Farmingdale
    • Floral Park
    • Franklin Square
    • Freeport
    • Garden City
    • Glen Cove
    • Glen Head
    • Glenwood Landing
    • Great Neck
    • Great River
    • Greenlawn
    • Greenport
    • Greenvale
    • Hampton Bays
    • Hauppauge
    • Hempstead
    • Hewlett
    • Hicksville
    • Holbrook
    • Holtsville
    • Huntington
    • Huntington Station
    • Inwood
    • Island Park
    • Islandia
    • Islip
    • Islip Terrace
    • Jamesport
    • Jericho
    • Kings Park
    • Laurel
    • Lawrence
    • Levittown
    • Lindenhurst
    • Locust Valley
    • Long Beach
    • Lynbrook
    • Malverne
    • Manhasset
    • Manorville
    • Massapequa
    • Massapequa Park
    • Mastic
    • Mastic Beach
    • Mattituck
    • Medford
    • Melville
    • Merrick
    • Mill Neck
    • Mineola
    • Montauk
    • Moriches
    • New Hyde Park
    • New Suffolk
    • North Babylon
    • Northport
    • Oakdale
    • Ocean Beach
    • Oceanside
    • Old Bethpage
    • Old Westbury
    • Orient
    • Oyster Bay
    • Patchogue
    • Peconic
    • Plainview
    • Port Washington
    • Quogue
    • Remsenburg
    • Ridge
    • Riverhead
    • Rockville Centre
    • Ronkonkoma
    • Roosevelt
    • Rosedale
    • Roslyn
    • Roslyn Heights
    • Sag Harbor
    • Sagaponack
    • Sayville
    • Sea Cliff
    • Seaford
    • Shelter Island
    • Shelter Island Heights
    • Shirley
    • Shoreham
    • South Jamesport
    • Southampton
    • Southold
    • Speonk
    • Syosset
    • Uniondale
    • Upton
    • Valley Stream
    • Wading River
    • Wainscott
    • Wantagh
    • Water Mill
    • West Babylon
    • West Hempstead
    • West Islip
    • West Sayville
    • Westbury
    • Westhampton
    • Westhampton Beach
    • Williston Park
    • Woodbury
    • Woodmere
    • Wyandanch
    • Yaphank
  • Zip Codes We Serve
We may service additional communities. Please contact us for more information.
  • U-Win Satisfaction Guaranteed
  • BBB A+ Accredited Business
  • Available 24/7 Blue
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Our Comfort Specialists are available to help, no matter the time of day. If you're in need of emergency services, we've got you covered 24/7.

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