Long Island's Trusted HVAC Contractor
AC installation, furnace, mini splits, heat pumps, and 24/7 repair. NATE-certified techs serving all of Nassau & Suffolk County since 2009.
Get Your Free Estimate
No pressure. No obligation. Just honest pricing.
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Heating & Cooling Services for Every Long Island Home
From new installations to emergency repairs, we handle every HVAC need across Nassau and Suffolk County.
Why Long Island Homeowners Choose Us
Since 2009, James and Dan have built Island Comfort on a simple idea: show up on time, do the job right, and charge a fair price. No call centers. No sales gimmicks. Just honest HVAC work from a crew that lives and works on Long Island.
James & Dan
Owners, 17+ years on LI
Licensed & Insured
HIC licensed in Nassau (H2409170000) and Suffolk (54721-H). $2M general liability. Full workers comp. Every job is covered.
NATE Certified Techs
Every technician on our team is NATE certified. That means they have passed the industry's most rigorous technical exam for HVAC installation and service.
Same-Day Service
Call before noon, we will be there today. Our dispatch team keeps trucks in both Nassau and Suffolk so we can respond fast, especially for no-heat and no-cool emergencies.
Upfront Pricing
Written quotes with line items before any work begins. No surprises, no hidden fees. The price we quote is the price you pay.
4.9 Google Rating
214 reviews and counting. We earn our reputation one job at a time. Read what your neighbors have to say about working with us.
All Major Brands
Carrier Factory Authorized. Lennox Premier Dealer. We also install and service Trane, Rheem, Mitsubishi, Goodman, and Daikin.
What Your Neighbors Are Saying
214 five-star reviews and counting. Here are a few from homeowners near you.
“James came out the same day we called. Diagnosed the issue in 20 minutes, had our AC back running within the hour. His crew installed our whole system four years ago and it has been flawless.”
“We got four quotes for central air. Island Comfort was the only company that showed up on time, explained every option without pressure, and gave us a written quote the same visit.”
“Our furnace died on the coldest night in January. James had a tech at our house by 9 PM and we had heat back by midnight. Professional start to finish.”
Recent HVAC Projects
Every project is completed by our in-house crew. No subcontractors. Here is a sample of recent work across Nassau and Suffolk County.
The Island Comfort Difference
Serving All of Long Island
Based in Mineola, we cover every town in Nassau and Suffolk County. No extra travel charges.
Nassau County
Common Questions
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Do you service both Nassau and Suffolk County?
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Ready to Get Comfortable?
Free estimates. Honest pricing. Mon–Sat, 7 am to 7 pm.