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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
18 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.
"
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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 Furnace / Forced Air Heating System - RepairElectric Boiler or Radiator 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

Aside from needing HVAC repair, there are times when you may need to replace your unit. HVAC replacement costs $5,000 to $12,500. Here are some telltale signs that your HVAC unit is going bad:

  • Your unit is 10 years or older.

  • Your home is very humid.

  • The unit keeps cycling without producing cool air.

  • You need to repair the unit frequently.

When deciding whether to repair or replace your air conditioner, several factors should be considered. It is generally worth repairing the unit if it's less than 10 years old, the warranty is still active, and you're dealing with a one-off issue. Most central AC units last about 15 years, while window units last 8 to 10 years. If your unit is approaching or has surpassed the 10-year mark and requires frequent or costly repairs (e.g., over $5,000), replacement is often the more sensible long-term investment. For older, inefficient, or out-of-warranty units experiencing multiple problems, replacing it is typically the better choice.

While you’ll pay more upfront for a brand-new HVAC unit, you can save money in the long run. Here’s how to save on your new HVAC system:

  • When purchasing a high-efficiency system, your energy bills will be lower in the future.

  • You may be eligible for special offers from your local energy company.

  • Depending on the system, you may be eligible for HVAC rebates and tax credits.

  • Choose to replace your air conditioning unit and furnace simultaneously to save on labor and installation costs. 

In some cases, yes, portable air conditioners are worth buying. They’re a relatively affordable option for cooling small spaces. (On average, they cost between $100 and $500 per unit.) Plus, they’re easy to set up, and you can move them around to cool various parts of your home as needed. However, they aren’t the most efficient AC option, and they tend to be noisy.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

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.