AC System Services

Serving Suffolk and Nassau Counties, NY

Service contracts, emergency services, and financing available. 

Reliable AC Services for Long Island Homes

Since 1985, Energywise Inc has been the go-to name for heating and air conditioning services in Suffolk and Nassau Counties. Our certified technicians bring decades of experience to every job, ensuring your home remains comfortable throughout the year. We understand unique climate challenges and provide tailored AC services to meet your specific needs. As a local business, we're deeply invested in our community and committed to delivering exceptional service to our neighbors. We stand behind our work with a 90-day service guarantee on all installations, repairs, and maintenance visits. For dependable AC services that keep your home cool and energy-efficient, reach out to us today.

Why Choose Energywise Inc

Our commitment to sustainable quality means your heating & cooling system will perform at its best when you need it most.

The Energywise team ensures seamless installation and thorough maintenance to keep your system running efficiently year-round.



  • We're here when you need us most
  • We service all brands and fix small issues before they become big problems
  • Our team is fully trained and backed by over four decades of experience
  • Proud to be a PSEG Long Island Home Comfort Partner
  • A+ Rating with The Better Business Bureau
  • Fully Licensed & Insured in Suffolk & Nassau County
  • Clean History with Suffolk & Nassau County Consumer Affairs


Energywise Inc

AC Installation

When you need a new AC system, Energywise Inc is here to help. We provide free estimates and guide you in selecting the ideal unit from leading brands like Bosch, Mitsubishi Electric, and Trane. Our certified technicians ensure proper sizing and installation, optimizing your system's performance and lifespan.

AC Maintenance/Tune-Up

Regular maintenance is crucial for extending your AC's lifespan and maintaining its efficiency. Our thorough tune-up services include cleaning, lubricating, and inspecting all components. By addressing minor issues early, we help you avoid costly repairs and unexpected breakdowns.

AC Repair

If your AC malfunctions, our skilled technicians are ready to diagnose and fix the issue quickly. We offer round-the-clock emergency services to restore your comfort as soon as possible. With our experience and fully equipped service vehicles, we efficiently handle repairs for all makes and models.

Mini-Split - Ductless

For homes without existing ductwork or areas needing focused cooling, we offer mini-split ductless systems. These efficient units provide flexible zoning options and work well in additions, sunrooms, or older homes. We install and service top brands like Daikin and Mitsubishi Electric, providing you with advanced, energy-efficient ductless solutions.

New Customers

Save $50 on

HVAC Service

First-time customers get $50 off any heating or air conditioning service from Energywise Inc. Experience top-quality HVAC care in Suffolk and Nassau Counties.

Call Energywise Inc!

Not valid with any other offers or promotions. Restrictions apply. Must mention this coupon at the time of scheduling.
(631) 500-5300

5% Discount for Those Who've Served

Energywise Inc offers 5% off HVAC services. Save on heating and cooling solutions for your Long Island home.

Call for Service!

Not valid with any other offers or promotions. Restrictions apply. Must mention this coupon at the time of scheduling.
(631) 500-5300

Here's what our satisfied customers are saying...

At Energywise Inc, we take pride in providing exceptional HVAC solutions to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Energywise Inc and let others know what you think.

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