Maintaining the Best Heating & Cooling Systems Ready When You Need Us

Preventive HVAC Maintenance in Central Islip

Keep Your Heating & Cooling System in Top Condition

Preventive maintenance is a fixed-fee contract that includes bi-annual scheduled maintenance visits to your home.

Why is maintenance so important?

  • Lowers utility bills
  • Increases equipment life
  • Fewer breakdowns
  • Improved indoor comfort
  • Protects your investment

We offer a comprehensive maintenance plan that ensures your system is clean, efficient, and set up to keep your home comfortable.

Twice a year, once for your heat and once for cooling, we will come to your home to complete the following:

  • Treating condenser and evaporator coils
  • Checking coil integrity to ensure optimal efficiency
  • Checking gas valves and pilot lights if applicable
  • Inspecting and tightening electrical connections
  • Lubricating necessary components
  • Cleaning condensate drain line and pan
  • Air filter inspection
  • Thermostat operation test
  • Heat exchanger inspection if accessible

Also, customers who take part in our bi-annual maintenance plans will receive the following benefits:

  • 10% discount on all work done by GMG HVAC INC. while under contract
  • Guaranteed 24-hour response time Mon-Sat 8 am-8 pm (Excluding Holidays)

GMG HVAC Inc. will maintain clear and concise records of unit information and any repairs allowing us to know if there are any changes to your system that may lead to unforeseen failure before that happens.

Ask us about becoming a GMG Gold customer and learn about even more benefits! Call (631) 309-2535 or fill out our online contact form to speak to our Central Islip HVAC preventive maintenance experts.

A GMG HVAC Experience

What Our Past Customers Are Saying
  • Quick and painless repair on my HVAC.

    “Jocelyn is very responsive and Joe is very professional. I received multiple options which was incredibly helpful. I'll have them bookmarked.”

    - Daniel L.
  • What a fabulous experience I had with GMG HVAC INC!

    “I looked at the reviews on this company before I called them. Saw they were known for their honestly. That’s what I wanted and certainly what I got - in addition to professional, quality service.”

    - Red B.
  • Professional, Helpful, Reasonably Priced

    “Our AC suddenly stopped working- we called and they were able to come out within a couple of hours to help- and thankfully were able to get our AC working again! We are so appreciative and will definitely continue working with them.”

    - Caitlin R.
  • Professional service at a reasonable price. Customer service is excellent.

    “They understand my needs and get the right people to do the job. They also communicate well with my GC regarding residual painting that needs to be done. They always clean up after themselves leaving job site clean and neat. They pay attention to details.”

    - Joanne C.
  • Fast, efficient, knowledgeable and honest service!

    “Very reasonable and family owned, who could ask for more nowadays? Highly recommend. He ┬áis unquestionably my go to guy from now on! Thank you Andrew!!”

    - Elyse G.
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Trusted for A Reason

Why GMG HVAC?
  • Trained & Qualified Technicians
  • Same Day Availability
  • Free Estimates Available
  • Go the Extra Mile
  • Locally Owned and Operated
  • 24/7 Emergency Service Available

Contact Us

Call us at (631) 309-2535 or fill out our form below to get in touch.
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