HVAC Seasonal Maintenance Services

Serving Suffolk and Nassau Counties, NY

Service contracts, emergency services, and financing available. 

Keep Your HVAC System Running Smoothly All Year

At Energywise Inc, we know how crucial it is to maintain your heating and cooling systems throughout the year. Our seasonal maintenance services help your HVAC system work efficiently in all weather conditions. With four decades of service in Suffolk and Nassau Counties, NY, our certified technicians can work on all brands and models, including Bosch, Water-Furnace, Mitsubishi Electric, and more. We go beyond basic maintenance at Energywise Inc. As a PSEG Long Island Home Comfort Partner, we offer solutions that fit your specific needs. Our team is ready 24/7 for routine check-ups or emergency repairs to keep you comfortable. We provide free estimates and a 90-day service guarantee, showing our confidence in our work quality. To see how Energywise Inc can prepare your HVAC system for any season, 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


Service Contracts

Energywise Inc offers flexible service contracts for ongoing HVAC care. These include regular maintenance visits, priority service, and repair discounts. Choosing a service contract helps your heating and cooling equipment last.

Spring HVAC Maintenance

Our spring maintenance gets your cooling system ready for hot weather. We clean or replace filters, check refrigerant, clean condenser coils, and adjust thermostats. This helps your air conditioning keep you cool when temperatures rise.

Winter HVAC Maintenance

Winter maintenance focuses on your heating system. We check heat exchangers, clean burners, test safety controls, and ensure proper airflow. This helps prevent breakdowns during cold months and keeps your home warm all winter.

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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