Commercial HVAC Services

Serving Suffolk and Nassau Counties, NY

Service contracts, emergency services, and financing available. 

Commercial HVAC Solutions for Long Island Businesses

Energywise Inc has been the go-to provider for commercial HVAC services in Suffolk and Nassau Counties since 1985. Our certified technicians bring decades of experience to every heating, cooling, and ventilation project. We offer round-the-clock emergency services to ensure your business stays comfortable, no matter when issues arise. At Energywise Inc, we prioritize your peace of mind. Our 90-day Service Guarantee reflects our dedication to quality workmanship and customer satisfaction. We service all brands and provide free estimates, making us a comprehensive resource for your commercial HVAC needs. Ready to experience exceptional HVAC care? Contact 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

Commercial Air Conditioning

Maintain a cool, productive business environment with our commercial air conditioning services. We partner with industry leaders like Mitsubishi Electric, Daikin, and Trane to deliver efficient cooling solutions. Our team installs, repairs, and maintains commercial AC systems to ensure optimal performance during Long Island's warmest months.

Commercial Heating

Energywise Inc provides reliable heating solutions for Suffolk and Nassau County businesses during cold winters. Our commercial heating services cover boilers, furnaces, and eco-friendly geothermal systems. As licensed professionals working with brands such as Weil-McLain, we maximize your heating system's efficiency to reduce energy costs and improve comfort.

Commercial Repair and Maintenance

Consistent maintenance extends your HVAC system's lifespan and prevents unexpected breakdowns. Our comprehensive repair and maintenance services cover all major brands and system types. Backed by our 90-day Service Guarantee, you can trust in our expertise. We offer customizable maintenance plans to fit your business's specific needs and budget.

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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