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TRUSTED BY NORTHFIELD, NJ HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon428
    Verified heating and air conditioning services reviews

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

Robinson Mechanical, LLC
4.9(
62
)
Central A/C - InstallCentral A/C - Service or RepairDucts & Vents - Install or Replace+6 more

Serving Northfield, NJ and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Itâ s a local fledgling company. Theyâ re trying very hard to accommodate their customers. Communication is desirable but in the end they came thorough with 5 stars. I would recommend them to anyone looking to have their HVAC needs."
Caruso Air Handler
Caruso Condenser
Response time7 hrs
19 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Pure Aire Professional Duct Cleaning
Pure Aire Professional Duct Cleaning
4.7(
119
)
Air Ducts & Vents - Clean

Serving Northfield, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1997

Free estimates

Emergency services offered

"Ed & Cris arrived exactly at 1PM when they said. They hauled in a heavy suction vacuum and attached to both supply and then return lines. Showed me the dirt collected in the first stage of the cleaner. Both men worked hard and did an excellent job. Was not ready for the dust throughout the house but they did warn me of it. We just finished a dirty tile job so the vent cleaning was a natural first. This is my second Angie's list contractor and we are contented.
"
Additional Photos
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+5

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Heating Specialties, Inc.
Heating Specialties, Inc.
4.4(
96
)
Central A/C - Service or RepairOil Furnace / Forced Air Heating System - RepairGas Boiler or Radiator Heating System - Repair+3 more

Serving Northfield, NJ and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Heating Specialties workers arrived on time and were very professional. The crew leader reviewed all of the work with me so I understood everything about my new AC system and how it worked. The were very respectful of my property and cleaned every work area before leaving. They trained my on how to program the new theromstats and made sure the I knew how to override the system should I ever have an issue with the zoned AC. I will use them for all of my heating/air conditioning needs for this point on. This is a five star operation."
Boiler Replacement
Boiler Replacement
Boiler Replacement
Boiler Replacement
Boiler Replacement

+12

2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for GS Mechanical
GS Mechanical
4.6(
57
)
Central A/C - Service or RepairGas Boiler or Radiator Heating System - RepairGas Furnace / Forced Air Heating System - Repair+6 more

Serving Northfield, NJ and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"I can't thank GS Mechanical enough for their prompt and exceptional service. Their technician John was not only professional and courteous but also extremely knowledgeable. He quickly diagnosed the issue and made the repair. He had all the necessary parts on hand and repair work was flawless. I'm truly grateful for their exceptional service. If you are looking for reliable HVAC company that goes above and beyond - I highly recommend them! They deserve every one of these 5 stars!"
Indoor HVAC Equipment
Outdoor Equipment
Gas Fireplace Renovation
Gas Fireplace Renovation
2 ton high efficiency ductless heat pump with surg

+12

Response time7 hrs
9 neighbors recently requested a quote
Recommended by92%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Yes, it’s important to turn off your AC sometimes to give it a break and prevent it from freezing up. If your AC runs all the time, your system’s parts will wear down quicker, which may mean that you need to replace it sooner. Plus, using your AC constantly uses more electricity and leads to higher energy bills.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

If both your furnace and AC unit are more than a decade old, it may be a good idea to replace both of them. However, your furnace can last up to three decades, and your air conditioner can typically last up to 15 years, so consulting with a pro before deciding to replace both of them is best. If it’s before that time limit for each, you can fix many problems with repairs or just replace one.

Yes, it’s normal for an AC to drip water. In fact, it’s part of the dehumidifying process that takes place inside your AC unit as the condensation trickles down into the drain pan. However, it isn’t normal for your AC to sound like it’s running water or have large puddles around it. If that happens, you can try the solutions listed above or call an AC repair pro.

When your HVAC system is loud, a few different causes are possible. If you have loose connections or bolts in the hardware, they can rattle as the system runs and vibrates. If you have an extremely dirty furnace filter, it could cause the system to generate noise. More commonly, an excessively loud HVAC system indicates a malfunction in the system. You may have a blower motor that is close to failing or a compressor that is breaking down. These issues require an immediate inspection.

The Northfield, 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.