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TRUSTED BY HIGHLAND, NY HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon225
    Verified heating and air conditioning services reviews

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

Avatar for Sync Mechanical, Inc.
Sync Mechanical, Inc.
5.0(
20
)
Central A/C - InstallGas Boiler or Radiator Heating System - InstallGeothermal Heating or Cooling System - Install+47 more

Serving Highland, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Jon was immediately responsive and helpful. I explained my situation and that I was concerned I might need to replace my furnace (a opinion from another company). He stated he would just come do a diagnostic and we could go from there. That diagnostic fee was very reasonable. The tech came, stating that it was likely the "board" that needed replacing. They ordered the part and immediately came out and finished my mix. A HUGE RELIEF that I did not have to replace the furnace right before winter. So for once I felt like I was being dealt with honestly, and they went above and beyond. I will call them with ANY of my HVAC/Plumbing needs. Thank you Jon and the techs at Sync! I'm still WARM!!"
Heating and air conditioning equipment replacement
Heating and air conditioning equipment replacement
Additional Photos
Additional Photos
Additional Photos

+5

4 neighbors recently requested a quote
Recommended by95%of homeowners
Joe's Plumbing, Heating & Air Conditioning
4.6(
84
)
Oil Boiler or Radiator Heating System - InstallOil Furnace / Forced Air Heating System - InstallDucts & Vents - Install or Replace+26 more

Serving Highland, NY and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"This week, when our A/C started malfunctioning we called Joe to have it serviced. We could not have been happier. Joe respondend very promptly to our call and resolved all our issues in very little time and at a very fair price. He's the type of honest, friendly, and professional neighbourhood company everybody wishes to have. We highly recommend him."
Response time2 days
6 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for AERODROP Service Providers
AERODROP Service Providers
4.8(
42
)
Geothermal Heating or Cooling System - InstallGeothermal Heating or Cooling System - Service

Serving Highland, NY and surrounding areas

Approved

In business since 2005

Emergency services offered

Credit card accepted

"I am a fan. Just met James today but we'll bring all of our HVAC work to him going forward. He probably could have sold me a brand new air conditioner today but told me I didn't need it. Other companies maybe not so honest in my experience. I highly recommend you work with this company over any other HVAC company. Thanks James."
Completed Installation
Before Installation
Short to ground
Location of compressor terminals
Importance of maintaining equipment

+8

Response time2 hrs
Response rate85%
Recommended by87%of homeowners
Affordable Heating & Cooling of NY Inc.
4.3(
53
)
Central A/C - Service or RepairOil Boiler or Radiator Heating System - RepairElectric Boiler or Radiator Heating System - Repair+15 more

Serving Highland, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"All Seasons Comfort HVAC has done two different systems installation for me. They have also provided service work and regular maintenance on these systems. Their quality of service, their pricing, and the work that the licensed HVAC Technicians have done for me have always exceeded my expectations. Based on these past experiences, I highly recommended this company!"
Response time4 hrs
Response rate86%
10 neighbors recently requested a quote
Avatar for All Bases Covered Mechanical
All Bases Covered Mechanical
4.6(
37
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Install or Replace+4 more

Serving Highland, NY and surrounding areas

Approved

In business since 1995

Free estimates

Warranties offered

"I was in the process of buying a house and my inspection revealed problems with the HVAC that the seller disputed. I hired Frank to come out and conduct a specialized HVAC inspection. He and his teammate were excellent, professional and thorough. Their inspection revealed more issues than even my original inspection uncovered, and this saved me from buying a lemon. My realtor even asked me for Frank’s contact info for his rental properties because he was so impressed with his work. I’ll definitely be using All Bases Covered again!"
Response time6 hrs
11 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Archibald Heating & Air Conditioning
Archibald Heating & Air Conditioning
3.8(
53
)
Oil Furnace / Forced Air Heating System - InstallCentral A/C - InstallGas Furnace / Forced Air Heating System - Install+13 more

Serving Highland, NY and surrounding areas

Approved

In business since 1938

Free estimates

Emergency services offered

"They did a great job removing my old oil furnace and installed a a new propane furnace and heat pump. They were on time, efficient and reasonably priced. I plan to use them for future work and would easily recommend Archibald Heating and Air Conditioning."
Energy Kinetics Boiler
Hybrid Heating System
Response time2 days
14 neighbors recently requested a quote
Recommended by93%of homeowners
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Showing 1-10 of 268
Heating and Air Conditioning FAQs, answered by experts

It depends on the type of AC unit and the extent of the mold growth. For example, if you have a small amount of mold in your central air conditioner, it’s worth cleaning it to protect your HVAC system and your health. In situations like these, you can often remove the mold yourself in a couple of hours. On the other hand, if you have a portable AC unit with a severe mold problem, it makes more sense to buy a new one. On average, replacing a portable AC unit costs $100 to $500.

Unfreezing an AC unit is not a DIY project unless the problem is a dirty air filter. Changing out an air filter is easy for homeowners, but otherwise, trying to repair ductwork, refill refrigerant, or replace a blower fan motor are tasks best left to the pros. Otherwise, you could cause further damage to your cooling system or even harm to yourself.

Troubleshooting common issues with your AC often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be low on refrigerant because of a leak. 

Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels.

The Highland, 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.