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TRUSTED BY WILLIAMSTOWN, NJ HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon299
    Verified heating and air conditioning services reviews

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

Avatar for Climate Mechanics LLC
Climate Mechanics LLC
4.9(
53
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"We found CLIMATE MECHANICS from their stellar reviews while searching for a knowledgeable and competent HVAC company. For years, we were dealing with a condensation problem with our LG mini split air conditioner, and no one could find the source of the problem. We can honestly say that we've never experienced a company like CLIMATE MECHANICS so committed to making things right. Nate, the awesome climate mechanic that came to our home, and Robert, the owner of the company, could understandably have walked away because they did not install the system and were not responsible for the problem. Nate worked for hours trying to locate the problem. In the end, after so many years of leaking, CLIMATE MECHANICS went above and beyond and resolved our ongoing problem. Toni, their wonderful contact person, told us repeatedly that Robert just wanted us to be happy in the end. And we are. Totally. Thank you Robert, Nate and Toni."
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+4

Response time1 day
12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Laury Heating Cooling & Plumbing
Laury Heating Cooling & Plumbing
4.8(
184
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1945

Free estimates

Emergency services offered

"We use Laury for repair and maintenance of our heating and cooling units for our rental properties and each time we need something done, the staff at Laury never cease to provide quality service. The technicians are always knowledgeable, thorough, courteous and pleasant. We recently had an HVAC system installed in one of our units and the home is rather large and is over 100 years old and there was not a whole lot of empty space to work with. The guys at Laury were able to install the system and all of the duct work and components involved neatly with the age and make-up of the home in-mind. They were pleasant throughout the entire installation which took almost a week. They were always on time and always communicated the process with us. Laury is a trusted business with many years of experience behind them. Prices are also extremely reasonable given the cost of services right now. Warren you are the man!"
High efficiency Carrier condenser.
High efficiency Carrier Infinity gas furnace with variable speed blower.
High efficiency Carrier gas furnace and Trion Air Bear filter.
High efficiency Carrier heat pump installation.
Ductwork installation.

+13

Response time10 mins
Response rate100%
19 neighbors recently requested a quote
Avatar for Ambient Comfort, LLC
Ambient Comfort, LLC
4.8(
9
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

We know you have a lot of options when it comes to HVAC services here in South Jersey, but we think our services are just a little bit better. We're a small firm, but we're well organized and our staff ranks among the most talented and experience in the area. That gives us the ideal combination of flexibility and expertise to handle heating, cooling and indoor air quality products of all varieties. If you need to install, repair, maintain or replace, give our team a call today. You won't regret it!

Response time1 day
Response rate92%
9 neighbors recently requested a quote
Avatar for American Air Duct Cleaning & Services
American Air Duct Cleaning & Services
5.0(
61
)
Air Ducts & Vents - Clean

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"Both Brian and Brian arrived at my home on time. They started with the air duct cleaning, and since my house has centralized heating and air conditioning, they started with the HVAC unit. In addition to their punctuality, I was impressed by the quality and speed of their work. For instance, even though the estimated time frame for the work was 5 hours, the actual length to do this work turned out to be less than 3 hours. In addition, they were very knowledgeable, thorough, helpful, and professional. I would highly consider hiring them for this type of work again."
Dryer vent cleaning
Duct cleaning
Dryer vent cleaning
Duct cleaning
Duct cleaning

+15

Response time4 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Reale Plumbing & HVAC, LLC
Reale Plumbing & HVAC, LLC
4.7(
21
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+7 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"They are hardworking and get the job done effectively and efficiently. Theyâ re so friendly and helpful with whatever task that needs fixing. Iâ d recommend them to anyone who needs plumbing, hvac, general contracting, and remodeling of bathrooms and kitchens. Whatever job needs done, Frank W Reale & Sons, now known as Reale Plumbing & HVAC will get it done!"
Final
Final
Final
Tile prep
Before

+26

Response time9 hrs
Response rate87%
19 neighbors recently requested a quote
Avatar for Horizon Services, Inc. (NJ)
Horizon Services, Inc. (NJ)
3.9(
1,637
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallDuctless Mini-split A/C - Install or Replace+12 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1989

Emergency services offered

Warranties offered

"Hired Horizon Services for HVAC replacement and plumbing (replace copper pipes that were old and deteriorating with pex and replace 40-year-old tub and surround). Both had a professional here quickly to give me an estimate and then again to start the work. The HVAC work was done quickly but large debris was left and communication with the installation crew was not good. The plumbing work is still underway but communication is good."
Horizon Services Heating & Cooling
Horizon Services Heating & Cooling
Horizon Services Heating & Cooling
 Horizon Services Heating Installations
 Horizon Services Heating Installation

+19

19 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Pure Aire Professional Duct Cleaning
Pure Aire Professional Duct Cleaning
4.7(
119
)
Air Ducts & Vents - Clean

Serving Williamstown, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1997

Free estimates

Emergency services offered

"We are very pleased with the work performed by Pure Aire. We had all of our HVAC ducts and dryer vents cleaned and the improvement in the air and clothes dryer performance was immediately evident. The appointment was made very easily, the crew arrived promptly as scheduled and professionally performed the work while informing us of their progress and any issues. We plan on using them again and highly recommend them based on our positive experience."
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+5

Response time2 days
Response rate100%
2 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

No, it's not safe to keep using your unit when it's frozen. Not only can running a frozen unit lead to damage, but it can also potentially overheat, making it a fire hazard. Therefore, it's always best to turn off the AC unit as soon as you notice any ice.

An air conditioner’s watt usage depends on multiple factors, including the type of AC unit, its size, and how often you use it. With that said, most central air conditioners consume between 3,000 and 3,500 watts. Meanwhile, window AC units use 900 to 1,400 watts, and portable air conditioners consume 2,900 to 4,100 watts.

You can protect your air conditioner in the winter by turning off the power at the thermostat and performing routine HVAC maintenance in the spring. Regular maintenance, cleaning, and repair of your AC unit helps protect it and extend its life span. If you have a window AC unit, remove it from the window and store it in a dry place during the winter. Window units cannot withstand freezing temperatures. Keeping them in your window also allows cold air to seep into your home.

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.

While many states do not have specific licensing requirements for HVAC companies, your local city or county might. It's always a good idea to check local requirements online and use a tool like Angi’s contractor license lookup to confirm that the company you’re considering is licensed. Regardless of licensing, you should always ensure the company you hire is fully insured to avoid potential lawsuits if a technician is injured on your property. Additionally, it is recommended to check if the company holds third-party certifications, such as North American Technician Excellence (NATE) certification or R-410A certification, which qualifies them to work with HVAC refrigerants.

The Williamstown, NJ 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.