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Best heating and air conditioning pros near Nassau, NY

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TRUSTED BY NASSAU, NY HOMEOWNERS

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

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
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

For all of your Plumbing and HVAC needs Joe's Plumbing Heating & A/C is here to get it done right the first time. Call us today and have us turn your house back into a home. Free estimates! We also accept major credit cards. Financing is available.

Response time2 days
6 neighbors recently requested a quote
Recommended by95%of homeowners
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

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. With over 80 years of combined experience in the field, our company is built on expertise, honesty and integrity. We specialize in central A/C installs, replacements and service as well as furnace, steam boiler and hot water boiler system installs, replacements and service.\nWe take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and to meeting your expectations. \n \n \n \n \n \n

Response time2 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
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

For over 85 years, Crisafulli Bros. Plumbing & Heating Contractors, Inc. has provided plumbing, sewer and drain, heating and cooling design, installation, service, scheduled maintenance, and electrical services to our clientele. Founded in 1939, our company now spans three generations combining the pride and craftsmanship you expect from a locally owned and operated family business with the resources and knowledge available from a large national company. With a growing workforce and a fleet of vehicles driving around every upstate NY neighborhood, Crisafulli Bros. is one of the largest mechanical contracting companies in the Capital Region. Our vast resources and commitment to quality led to us being recognized as the Best of the Capital Region for over 16 straight years and named a Top Work Place. We have set the standard for plumbing, heating, cooling, and electrical craftsmanship in the region.

Response time9 hrs
Response rate86%
49 neighbors recently requested a quote
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

"Bob from PMA comfort solutions serviced my HVAC system today and did a terrific job! He explained what he was doing and gave me additional information to help save me money and prolong the life of my system. I highly recommend PNA comfort solutions!"
Photos
Photos
Photos
Photos
Photos

+73

Response time1 day
14 neighbors recently requested a quote
Recommended by93%of homeowners
All Trades Plumbing & Construction
4.9(
410
)
Gas Boiler or Radiator Heating System - Repair

Serving Nassau, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

Visit our website to see over 325, "5 star", certified, and detailed reviews... https://pro.homeadvisor.com/ratings/................................................................................................................................................... Small local company, big time service. We strive to do the best work we can, with quality long lasting parts, at a lower price than the big boy competitors. We specialize in WATER HEATERS, drain clearing, and water sanatizing and filtration. For 35 years we have been helping home owners add value to their homes. The wave of the future is clean water. We install the highest quality, no-salt, little maintenance, whole house filtration units. Protect your home and your family by getting this done today!

1 neighbors recently requested a quote
Recommended by97%of homeowners
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
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

As a family-owned business, we here at Northview Cleaning & Maintenance want to treat your home just as well as we treat our own. We offer and guarantee a comprehensive cleaning that will make your home sparkle and shine, and provide comfort and warmth for you and your loved ones. We specialize in those demanding and difficult jobs that you hate to do, but love when the job is finished. Your windows, your house siding, even your carpets, will take on a shine and cleanliness that will afford you and your family the peace of mind and welcoming atmosphere you deserve. At Northview Cleaning & Maintenance, we take pride in our work, so you can take pride in your home. \n \nNorthview Cleaning & Maintenance also services commercial properties of all kinds. From the impression you make on prospective clients, to the state of mental well-being for your office workers, every business should present a calm, smooth, and serene environment, rendered clean and spotless by our meticulous team.

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
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

We sustain our business on quality and integrity. We are experts in our trade and our commitment to quality from beginning to end of your project. We look forward to earning your business. Call us anytime with any questions you may have. Thanks for your time and have a great day.

Dryer vent cleaning
Response time3 hrs
Response rate97%
8 neighbors recently requested a quote
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

At One Peace LLC, we understand that your home is more than just a place—it's a sanctuary. Specializing in providing reliable and high-quality repair services, we are dedicated to helping homeowners maintain the beauty and functionality of their homes.\n\nOur team of skilled professionals brings years of experience, ensuring that every project is completed with precision and care. Whether it's a small repair or a major renovation, we approach every task with the same commitment to excellence.\n\nWhy Choose One Peace LLC?\nExpertise You Can Trust: With a proven track record in home repair services, we deliver solutions that stand the test of time.\nCustomer-Centric Approach: Your satisfaction is our priority. We work closely with you to understand your needs and exceed your expectations.\nTransparent and Fair Pricing: We believe in honest and upfront pricing, so you know exactly what to expect.\nPrompt and Reliable Service: We value your time and ensure timely completion of all projects without compromising on quality.\nJoin the many satisfied homeowners who have experienced the peace of mind that comes with choosing One Peace LLC. Let us be your partner in creating a home that reflects your style and meets your needs.\n\nContact us today for a consultation and discover how we can bring your home improvement vision to life!\n

Tile
Pressure washing
Flooring Sales/Installation/Repair Project
Handyman Services Project
Tile

+35

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

The top reason to purchase an HVAC maintenance contract is the fact that it ensures you are detecting problems before they turn into expensive fixes. Secondly, this type of contract provides priority service, which is nice if it’s peak busy season. Finally, an HVAC maintenance contract provides discounts on parts and labor for repairs, which can save you a good amount of money if your unit breaks.

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. 

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

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.

You should use a breathable, weather-resistant cover with ventilation. It can be a top cover or a full cover that has mesh to allow airflow. A full, non-breathable cover can cause moisture to build up, leading to rust, frozen parts, and corrosion. A full cover also attracts unwanted critters, such as mice, that can damage the wiring and your unit. If you need to protect your AC unit from falling icicles, choose a sturdy top cover or piece of wood that prevents icicles from damaging your unit.

The standard HVAC warranty is around five years. Still, many brands offer an extension to 10 years if you register the product within a specific timeframe, typically 60 to 90 days post-purchase or HVAC installation. Over the past decade, warranty periods have substantially increased, shifting from 3-5 years in the 90s to the now-prevalent 10+ year warranties. Both warranty types cover parts failing due to manufacturer defects, incurring no additional costs. Some manufacturers provide extended warranties surpassing the usual 15- to 20-year window, though these often involve extra fees. 

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.