Long Island's Best In Heating & A/C

Service Contracts Available | Emergency Service Available | Financing Available


Why Choose Energywise, Inc. for Your Heating and Cooling Needs?

A+ Better Business Bureau Rating
Local Experts for Over 38 Years
Servicing All Equipment
Brands
Available 24/7/365 
Service Contracts
Available
 Certified, Licensed,  and Insured 

IGSHPA Accredited Geothermal Installing Contractor

Book your appointment today for a 
ANNUAL INSPECTION & SAFETY CHECK 
on your heating or air conditioning equipment for just
$99.95 (REG. $150.00)
*Additional fees apply for oil systems

We Bring Decades of HVAC Experience to Our Community

For over 35 years, Energywise, Inc. has served residential and commercial customers throughout Suffolk and Nassau counties, providing professional heating and cooling services for their homes and businesses. Located in Ronkonkoma, NY, and surrounding areas throughout Long Island, you can count on us to provide the best HVAC contractors in Long Island, NY in the industry!

Fill out our online form to request a service or call us today
(631) 228-8401 in Suffolk County or (516) 218-6222 in Nassau County.
Heating

Residential Heating and Cooling Repairs

Stay comfortable this winter with the help of the experienced team at Energywise. We repair all makes and models of heating systems.
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Heating

Residential Heating and Cooling Installation

Upgrade to a new, energy-efficient heating system and lower your monthly energy bills. Select from all the top brand name manufacturers.
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Commercial Heating and Cooling Repair

Commercial Heating and Cooling Repairs

Air conditioners always seem to break down at the least convenient time. We can repair yours 24 hours a day, 7 days a week.
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Commercial Heating and Cooling Installation

Commercial Heating and Cooling Installations

Get an efficient, modern, and highly affordable A/C unit installed in your commercial space by the technicians from Energywise.
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AC unit

Ductless Systems

Ductless HVAC systems are a great way to control your comfort when you don't have the room for a larger unit.
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HVAC system

Service Plans

Have your heating and A/C system serviced on a regular basis by the HVAC contractors Long Island, NY trusts to prevent costly repairs down the road.
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Geothermal

Geothermal Systems

Rely on the experienced professionals at Energywise for installing and repairing geothermal systems.
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