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Best heating and air conditioning pros near Lloyd Harbor, NY

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TRUSTED BY LLOYD HARBOR, NY HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon777
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Lloyd Harbor - Updated Nov 2026

Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Lloyd Harbor, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Can't speak highly enough of Ali. Prompt, courteous, but most importantly able to get to the bottom of problem without ripping off the customer. AN HONEST MAN! After many years of searching, I've finally found an HVAC repair company that I can trust! Happy days are hear again."
Additional Photos
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+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for MassAir
MassAir
4.9(
64
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceGas Furnace / Forced Air Heating System - Install+11 more

Serving Lloyd Harbor, NY and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"The guys at MassAir made having to get new central AC units installed, repairs on older units, new vents and ductwork, etc., actually a pleasurable experience! It is a family owned business, and I found Joe and his son Michael to be a real pleasure to work with. They are an extremely professional, proficient, knowledgeable, honest and hardworking team, and I trust them with any HVAC related projects that I have in the future. I 100% recommend giving these guys a call for your HVAC needs! -Mike Vedder"
Furnace
Ductless mini-split
Air Handler
Condenser
Condenser

+9

Response time3 hrs
14 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for N. H. Ross, Inc.
N. H. Ross, Inc.
4.7(
191
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallDuctless Mini-split A/C - Install or Replace+2 more

Serving Lloyd Harbor, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1976

Warranties offered

Small jobs welcome

"The AC was installed in 2021 replacing an existing AC. It worked well for two seasons but I n the beginning of this season 2024, I had problems. Although the technicians that came were nice, they did nothing to fix the problem until Christian who worked tirelessly. In the future I will only ask for him. The reason for the rating is because their customer service is very good, however, I went nearly the entire summer with an AC that was malfunctioning because the first two techs could not find any problem. Also, I find their repairs costly. An example is that I paid to be in a program where they inspect electrical plumbing and hvac. No recommendation was less than $500. In fact my son used them to replace two hoses in the kitchen. Starting price for anything seems to be $500 even if they are there for 30 minutes. The choice is yours. very good customers service, nice but mediocre techs (except for Christian) and costly repairs."
Bathroom Makeover
Bosch Combination Boiler
Gas Conversion
Rinnai Gas Combi Boiler
Old conventional gas boiler

+2

Response time30 mins
4 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Wise Aire Mechanical Inc
Wise Aire Mechanical Inc
4.7(
50
)
Ductless Mini-split A/C - Install or ReplaceDuctless Mini-split Heating System - Install or Replace

Serving Lloyd Harbor, NY and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"They were great! Family run business who were with us every step of the way. It took us a lot of time to decide on what ductless a/c units we wanted and exactly where we wanted them installed but Keith was so helpful working with our many requests and helping us save money to stay within our budget. Highly recommend these guys."
18k Ductless unit in family room & living room
Bedroom unit
Bedroom unit
Mitsubishi Condenser
Bedroom unit

+3

Response time7 hrs
1 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Comfort Ductwork Systems, Inc.
Comfort Ductwork Systems, Inc.
4.9(
73
)
Central A/C - InstallHeat Pump - Install or ReplaceDuctless Mini-split A/C - Install or Replace+1 more

Serving Lloyd Harbor, NY and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Jonathan and his crew were very professional. There were no hidden costs. Quoted price, installed on time, cleaned up and made sure everything was working accurately. I would highly recommend them to anyone looking for HVAC work. I was very impressed by their quality."
Condensing Boiler & Indirect Hot Water Heater
Central HVAC
Oil Fired Boiler & Indirect Hot Water Heater
New Install
Thermostat Control

+2

Response time11 hrs
Response rate86%
17 neighbors recently requested a quote
Chortani Services HVAC
4.6(
193
)
Central A/C - Service or RepairElectric Boiler or Radiator Heating System - RepairElectric Boiler or Radiator Heating System - Repair - For Business+3 more

Serving Lloyd Harbor, NY and surrounding areas

Approved

In business since 1992

Offers commercial services

Customers say: Quick response

"I had a really positive experience with Chortani. I needed a central air conditioning system totally replaced and Mongi did a professional, clean, thorough installation. He came when he said he would come, and performed the job on time and in the given time frame. The one thing that I appreciated was his honesty and integrity in performing this replacement. I have to say, Chortani did a wonderful job and I am really pleased. I recommend Chortani 100%."
Response time4 hrs
Response rate100%
Recommended by97%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

High humidity is one of the most common reasons for air vents to sweat or produce condensation. When the cool, dry air from your HVAC unit meets warm and moist air in your home, it will cause condensation. Insulating your ductwork can help prevent this. If you live in a very humid region, a dehumidifier can also help.

The cost to install a ductless mini-split AC system ranges from $2,000 to $14,000, depending on the type of unit, the number of zones or rooms, and the complexity of the installation. On the low end, a system for one or two zones in a single room costs around $2,000. Covering two zones for more rooms can cost between $6,000 and $8,000. For a larger multi-zone system to cover an entire home, costs can be $14,000. If you don’t already have an AC system in place, you may need to add the cost of permits, an electrician, and a concrete pad.

Common signs of insufficient return air include uneven temperatures, with some parts of your home feeling hotter or colder than others, and noticeable differences in air pressure between rooms. You might also observe that more air is blowing in rooms closer to the AC unit. Leaky air ducts can also be a related issue or clue.

For the most part, you should leave your AC fan in “auto” mode so that it only runs during a heating or cooling cycle. Keeping it in this position uses less energy, which equals lower utility bills. However, there are some situations where it’s better to leave your AC fan on, including if you have allergies or there are lots of people in your home.

Yes, it is possible. An electrical fire can break out if the compressor has inadequate ventilation. When it overheats but doesn't have a proper thermal cutout, this can cause the motor to short-circuit and catch fire. This risk is exacerbated if flammable materials, like dust and fallen leaves, are clogging the unit. The compressor overheating won't start a fire by itself, but poor maintenance and installation can increase the risk once it hits its breaking point and short-circuits.

The Lloyd Harbor, 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.