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There are 30 highly-rated local heating and air conditioning pros.

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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon193
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Greenport, NY

*The Angi rating for Heating And Air Conditioning Service companies in Greenport, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Greenport, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on October 22, 2025

Find Heating and air conditioning pros in Greenport

Avatar for MSD Heating & Cooling

MSD Heating & Cooling

3 Champlin Ave
4.85(
73
)
•Approved Pro

MSD Heating & Cooling

3 Champlin Ave
4.85(
73
)
•Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
148 local quotes requested

NOTE I M SORRY FOR ALL , WE NOT DOING ANY TYPE OF PLUMBING, WORK. OIL FURNACE,OIL BOILER , OIL HOT WATER HEATER, WE ARE DOING GAS FURNACE, AND HEAT PUMP SYSTEM HEATING AND AIR CONDITIONING.THAT'S ALL , WE DONT DO BASEBOARD, RADIANT,ANY OIL APPLIANCE OR PLUMBING WORK . THANKS FOR UNDERSTANDING. MSD Heating and Cooling is now offering free estimates for all AC replacements and new installations. We have been in the business for over 18 years and we've been lucky enough to learn a thing or two over those years. We've even worked hard to make sure that our staff knows the most up-to-date information about all of your heating and cooling needs. Keeping you cool and warm is our goal!

"Reasonable price great work friendly and very clean staff"

Huseyin A on May 2022

NOTE I M SORRY FOR ALL , WE NOT DOING ANY TYPE OF PLUMBING, WORK. OIL FURNACE,OIL BOILER , OIL HOT WATER HEATER, WE ARE DOING GAS FURNACE, AND HEAT PUMP SYSTEM HEATING AND AIR CONDITIONING.THAT'S ALL , WE DONT DO BASEBOARD, RADIANT,ANY OIL APPLIANCE OR PLUMBING WORK . THANKS FOR UNDERSTANDING. MSD Heating and Cooling is now offering free estimates for all AC replacements and new installations. We have been in the business for over 18 years and we've been lucky enough to learn a thing or two over those years. We've even worked hard to make sure that our staff knows the most up-to-date information about all of your heating and cooling needs. Keeping you cool and warm is our goal!

"Reasonable price great work friendly and very clean staff"

Huseyin A on May 2022

Avatar for Mayjac Plumbing, Inc.

Mayjac Plumbing, Inc.

P.O Box 1258
4.92(
13
)
•Approved Pro

Mayjac Plumbing, Inc.

P.O Box 1258
4.92(
13
)
•Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

At MayJac Plumbing Inc. we're dedicated to providing our clients with the very best service, installation, and repairs for all phases of their plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail we put into each of the projects we're involved with. Our goal at MayJac is to maintain a relationship with every customer for life. MayJac Plumbing Inc. is fully licensed and insured. We have over 18 years of experience. Call us today at (631) 909-1829 to discuss your all plumbing needs!

"Joe was great."

Nicholas U on June 2024

At MayJac Plumbing Inc. we're dedicated to providing our clients with the very best service, installation, and repairs for all phases of their plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail we put into each of the projects we're involved with. Our goal at MayJac is to maintain a relationship with every customer for life. MayJac Plumbing Inc. is fully licensed and insured. We have over 18 years of experience. Call us today at (631) 909-1829 to discuss your all plumbing needs!

"Joe was great."

Nicholas U on June 2024

Avatar for Koda Plumbing And Water Heaters

Koda Plumbing And Water Heaters

7 Washington Pl
No reviews yet

Koda Plumbing And Water Heaters

7 Washington Pl
No reviews yet
Free onsite estimate

We do general plumbing services in Long Island. We specialize in: ? **Professional Installation of water heaters ** *Water leak detection *Faucet installation and repair *Shower plumbing *Drainage inspection and repair *Water leak repairs *Appliances installation *Dryer Vent Cleaning *drain cleaning **Special Offer: Get 10% off your first service call !**

We do general plumbing services in Long Island. We specialize in: ? **Professional Installation of water heaters ** *Water leak detection *Faucet installation and repair *Shower plumbing *Drainage inspection and repair *Water leak repairs *Appliances installation *Dryer Vent Cleaning *drain cleaning **Special Offer: Get 10% off your first service call !**

JoeB HVAC LLC

No reviews yet

JoeB HVAC LLC

No reviews yet
1 years of experience

I Have 20 years experience in the HVAC trade in residential and commercial maintenance, service/repair, and installations. I am certified in LG, Daikin and Trane mitsubishi commercial and residential vrf/vrv systems. there is no problem I can not fix and no issue i can not resolve. I am neat, organized and provide the highest level of professionalism.

I Have 20 years experience in the HVAC trade in residential and commercial maintenance, service/repair, and installations. I am certified in LG, Daikin and Trane mitsubishi commercial and residential vrf/vrv systems. there is no problem I can not fix and no issue i can not resolve. I am neat, organized and provide the highest level of professionalism.

Unlimited Plumbing & HVAC

No reviews yet

Unlimited Plumbing & HVAC

No reviews yet

Hi there, my name is Devin Thomas. I have been working in the field of plumbing and hvac for about 15 years now. I do everything from plumbing, cleaning drains, fixing leaks, to heating and cooling, boiler services and AC systems. We do full installs and replacements as well, for any water heaters, boilers, and or AC units

Hi there, my name is Devin Thomas. I have been working in the field of plumbing and hvac for about 15 years now. I do everything from plumbing, cleaning drains, fixing leaks, to heating and cooling, boiler services and AC systems. We do full installs and replacements as well, for any water heaters, boilers, and or AC units

Mocka GC corp

No reviews yet

Mocka GC corp

No reviews yet
Emergency services offered

Our company is owner operated company.Specialized in all types of hvac installations and services.The quality and the efficiency to respond to our customers makes us stand above most pur competitors.The 15 years experience and the professional crew adds the most greatest valie of what we deliver.

Our company is owner operated company.Specialized in all types of hvac installations and services.The quality and the efficiency to respond to our customers makes us stand above most pur competitors.The 15 years experience and the professional crew adds the most greatest valie of what we deliver.

Full Restore USA

227 Teaneck Road
No reviews yet

Full Restore USA

227 Teaneck Road
No reviews yet
3 years of experience

At Full Restore USA we offer Mold and Moisture Testing, Water Sampling Services, Asbestos Testing, Indoor Air Quality Testing and Soil Testing. Contact us today! Over 3 years of experience handling both Residential and Commercial. Payment: Zelle, Venmo, Cash and Check Card coming soon....

At Full Restore USA we offer Mold and Moisture Testing, Water Sampling Services, Asbestos Testing, Indoor Air Quality Testing and Soil Testing. Contact us today! Over 3 years of experience handling both Residential and Commercial. Payment: Zelle, Venmo, Cash and Check Card coming soon....

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Heating and Air Conditioning questions, answered by experts

When faced with HVAC issues, it's best to begin by ensuring the thermostat settings are correct for either heating or cooling. If the system isn't responding, check the thermostat for proper function and power supply. It's also important to examine air filters, as clogged ones can decrease performance. Confirm the power supply to the system by checking the circuit breakers and fuses. If these basic steps fail to resolve the issue, contact an HVAC professional for a more detailed diagnosis and repair.

Professional HVAC installation requires licensed expertise in several areas, including electrical- and plumbing-related work. An HVAC team must know how to safely handle regulated refrigerant chemicals and the gas, oil, or propane used in furnaces and boilers. A proper HVAC installation protects your home from energy loss, fires, and even carbon monoxide leaks.

Yes, you can potentially save $60 to $200 by handling your own air conditioner capacitor installation. However, capacitor replacement comes with the risk of electric shock. Only attempt this if you have the knowledge and protective gear to carry it out safely. Otherwise, we recommend hiring an HVAC pro with the experience to properly diagnose the issue and avoid damaging other parts of your AC unit.

Replacing both an AC and a furnace takes a full day on average, ranging from eight to 12 hours. The process involves removing the old units, installing the new ones, and ensuring all connections are properly made. If both systems are being replaced simultaneously, it can take longer than installing a furnace alone, so plan accordingly.

Unlike other types of air conditioning, portable units don’t require venting or any other associated parts like hoses. For that reason, they don’t function the same as their counterparts, but will do a similarly good job of cooling down small spaces and won’t require any installation or much maintenance.

The Greenport, NY homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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