Reliance Heating and Cooling Exceeding Expectations

Areas We Serve

Reliance Heating and Cooling on Long Island & Beyond

At Reliance Heating and Cooling, our team is proud to offer a comprehensive range of heating and cooling solutions for your home. Regardless of whether you want to get routine maintenance on your home comfort system, need basic repairs, or are looking to select and install an entirely new system for your home, our team can help. We are a full-service HVAC company, backed by expert technicians and highly experienced professionals. Our team caters to our clients’ needs and work to provide them with top-quality HVAC solutions at competitive prices.

We proudly serve customers throughout Nassau and Suffolk counties, including:

  • Arverne
  • Bay Shore
  • Bohemia
  • Brentwood
  • Brookhaven
  • Brookville
  • Center Moriches
  • Centre Island
  • Coram
  • East Islip
  • Farmingville
  • Hauppauge
  • Holbrook
  • Holtsville
  • Huntington
  • Islip
  • Kings Park
  • Lake Grove
  • Manorville
  • Medford
  • Northport
  • Oakdale
  • Oyster Bay
  • Patchogue
  • Port Jefferson
  • Riverhead
  • Ronkonkoma
  • Saint James
  • Sayville
  • Setauket
  • Stonybrook
  • Smithtown
  • West Islip

24/7 Emergency Service & Support

Because temperatures in our area can reach such extremes, having the heating or AC go out can quickly go from an inconvenience to a genuine emergency. Add this to the fact that these systems often break down when summers are at their hottest or winters are at their coldest, and you simply can’t wait to get these issues addressed. Fortunately, at Reliance Heating and Cooling, our team is available to help you with our call center 24 hours a day, seven days a week. Regardless of what the problem is or when it crops up, our skilled and professional experts can address it in no time so your family can go back to normal in a comfortable home.

Call our Long Island heating and AC specialists today at (631) 619-2529 to schedule your appointment!

Why Our Customers Rely On Us

For All of their Heating & Cooling Needs
  • “Love that they have membership agreements and will show up when they say they will. ”

    Kathy M.

  • “I am very grateful for the excellent service we received!”

    Peter S.

  • “He was personable, took the time to explain everything and had us up and running in no time!”

    Fran M.

  • “Can't say enough!”

    John K

  • “pool service”

    Jackie M.

  • “I have dealt with many service-oriented firms in my life, and can truly appreciate a quality organization such as yours.”

    Rick B.

  • “I can always count on Reliance”

    Donna from Century 21 Princeton Properties Realty

  • “Will definitely keep Reliance as my service provider!”

    Alexis H.

  • “Solved my problem with some replacement parts for a very reasonable cost.”


  • “Job Well Done!”


  • “They were at my home within a few hours and Joe was amazing.”

    Jerry R.

  • “Tom from Reliance came and with a stock part off his truck, he was able to get me up and running.”

    Jordan B.


Service You Can Rely On




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