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At Danisi Energy Company, we are dedicated to providing high-caliber HVAC services to Suffolk County and the surrounding areas. We're proud to be accredited by the Better Business Bureau, and with more than 50 years of experience, we're skilled at delivering precise, long-lasting workmanship. An HVAC contractor from our company can provide you a variety of services, including: Air Conditioning Installation, Air Conditioning Repair, Heating System Installation, Heating System Repair, Geothermal Heating System Installation.

As a family-owned and -operated company, we're dedicated to creating long-term relationships with our clients, and our staff will work hard to make sure you can keep you home at a comfortable temperature throughout every season. We'll use durable parts to maintain your HVAC. Our company is fully licensed and insured, and has a A+ Rating on BBB, our licenced contractors aim to do excellent work. Danisi Energy Company provides service to all of long island, New York, six days a week, and we offer flexible appointments. If you need work done on your heating or air conditioning system, call today. 631.732.6666 system, and we have financing available to help you get started on your project.








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Air Conditioning Installation, Air Conditioning Repair, Air Duct Installation, Air Duct Repair, Gas Pipe Installation, General Solar Energy Systems, Geothermal Air Conditioning Installation, Geothermal Heating System Installation, Heating System Installation, Heating System Repair, Oil to Gas Conversion