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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon100
    Verified heating and air conditioning services reviews

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

*The Angi rating for Heating And Air Conditioning Service companies in Nassau, 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 Nassau, 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 February 05, 2026

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

Avatar for Aircon Heating and Cooling Service LLC
Aircon Heating and Cooling Service LLC
5.0(
19
)
Gas Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Repair+1 more

Serving Nassau, NY and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Specializing in residential and light commercial HVAC. We provide expert diagnostics, repairs, maintenance, and full system installations for furnaces, air conditioners, ductless mini splits, rooftop units, and walk-in refrigeration systems. \nOur goal is simple-deliver reliable, honest service with fast response times and quality workmanship. Whether it is a no-heat emergency, AC replacement, or routine maintenance, our team is committed to keeping you home or business comfortable year-round

New Furnace
A/C Replacement
Furnace Replacment
A/C Replacement
4 neighbors recently requested a quote
Recommended by61%of homeowners
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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 Nassau, NY and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"The repair man that came from Joe's, worked very hard to diagnose the problem and figure out the best solution for me. As a result my air conditioner is running and the work done was reasonable. a really good company to know."
Response time2 days
6 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Wheeler Heating and Cooling
Wheeler Heating and Cooling
4.5(
64
)
Gas Furnace / Forced Air Heating System - Install

Serving Nassau, NY and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Michael was A-one on work and consideration for me due to the heating problems. Very professional!!!!"
Response time2 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Crisafulli Bros. Home Services
Crisafulli Bros. Home Services
4.7(
73
)
Gas Furnace / Forced Air Heating System - InstallAir Ducts & Vents - CleanCentral A/C - Install+22 more

Serving Nassau, NY and surrounding areas

Approved

In business since 1939

Credit card accepted

Offers commercial services

"Brandon came out this morning to assess the issue. He was very polite and professional. Maximus and Jon were my installers. They were professional, polite and got the job done timely. Great guys!"
Response time9 hrs
Response rate86%
49 neighbors recently requested a quote
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Avatar for Grasshopper Heating & Cooling
Grasshopper Heating & Cooling
4.5(
126
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Repair+9 more

Serving Nassau, NY and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: True professional

"Matt came to check out my boiler and was completely professional and upfront. I will definitely use Grasshopper Heating and cooling again"
Photos
Photos
Photos
Photos
Photos

+73

Response time1 day
14 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Pro Services
Pro Services
4.8(
152
)
Air Ducts & Vents - Clean

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"We needed chimney sweep & minor repairs. Scheduling was easy and the guys who showed up were on time and very professional. Work was done well and we’re very happy, will be calling them for all future work on our chimney and HVAC."
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
47 neighbors recently requested a quote
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Avatar for NorthView Cleaning & Maintenance
NorthView Cleaning & Maintenance
5.0(
17
)
Air Ducts & Vents - Clean

Serving Nassau, NY and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Brandon cleaned our ductwork for the air conditioning and furnace. He was responsive, friendly, knowledgeable and arrived promptly. Would definitely use him again for any of the services his company offers! I highly recommend Northview Cleaning and Maintenance."
Clean Carpet Living Room
House Washing
Gutter Cleaning
Before/After Gutter Cleaning
Deck Washing

+23

Response time5 hrs
Response rate95%
18 neighbors recently requested a quote
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Avatar for DryerVentz-DuctVentz Cleaning Service
DryerVentz-DuctVentz Cleaning Service
4.9(
25
)
Air Ducts & Vents - Clean

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Todd responded quickly and was able to visit my home and replace my dryer vent the next day. Polite, efficient."
Dryer vent cleaning
Response time3 hrs
Response rate97%
8 neighbors recently requested a quote
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Avatar for One Peace, LLC
One Peace, LLC
4.9(
17
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

Free estimates

Customers say: True professional

"Joe's service was outstanding. He consistently exceeds expectations by demonstrating extensive knowledge and ensuring that all tasks are completed diligently, without taking any shortcuts. I would be delighted to seek his assistance in the future, without any hesitation."
Tile
Pressure washing
Flooring Sales/Installation/Repair Project
Handyman Services Project
Tile

+35

Response time3 days
Response rate100%
Recommended by41%of homeowners
Request Quote
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Showing 1-10 of 189
Heating and Air Conditioning FAQs, answered by experts

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

While it is possible to add Freon to your AC unit yourself, it is not recommended. In fact, the U.S. Environmental Protection Agency (EPA) prohibits the handling of Freon without a license. Freon is a dangerous gas that can cause irreversible damage to your AC or yourself if not installed correctly. It is worthwhile to hire a professional to add Freon to your AC.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from $6,000 to $17,000 or more for the ductwork and AC unit. You’ll also have to hack into the home’s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.

They can, but it’s not as common. Window AC units are much smaller than whole-house systems and less likely to develop refrigerant leaks or similar issues. As a result, you will rarely need to add a new refrigerant, limiting overcharging problems. However, it’s still important to leave refrigerant management in the hands of professionals when window units need work.

The Nassau, 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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