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TRUSTED BY PRINCETON, MA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon154
    Verified heating and air conditioning services reviews

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

Avatar for Emerald HVAC LLC
Emerald HVAC LLC
4.9(
16
)
Central A/C - Service or RepairHeat Pump - Repair or ServiceHeat Pump - Repair or Service - For Business

Serving Princeton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"Customer service was good, stayed in contact with me and updated me on arrival time of technician. Technician was courteous, professional, and gave good insight on how to maintain system, helped troubleshoot some things. Looking forward to working with Emerald HVAC again."
Response time1 day
Response rate93%
30 neighbors recently requested a quote
Avatar for Dr. Clean-Air Restoration
Dr. Clean-Air Restoration
4.9(
99
)
Air Ducts & Vents - Clean

Serving Princeton, MA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Prompt response from initial quote request to showing up to do the work. Work was explained prior to start and any questions that I asked during the cleaning were professionally answered."
Before
After
Response time1 day
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Princeton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Great !! Gabriel was on time and went right to work. He took pictures of duct work before and after. He supplied my wife and I N95 masks to wear during the cleaning keeping us safe. Gabriel was a true professional."
Additional Photos
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Additional Photos
Additional Photos

+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Duct Kings
Duct Kings
4.7(
410
)
Air Ducts & Vents - Clean

Serving Princeton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Emergency services offered

"Duct Kings came to clean out a dryer vent. They were very quick with their work and did a great job. They even documented the job with before and after pictures and videos which we appreciated. I would highly recommend if you're looking for a fast and reliable duct company"
Additional Photos
Response time2 days
Response rate100%
16 neighbors recently requested a quote
KERO HVAC
4.6(
32
)
Central A/C - Service or RepairDuctless Mini-split Heating System - Install or ReplaceHeat Pump - Repair or Service

Serving Princeton, MA and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: Quick response

"Thought something was wrong with my Hvac system. Kero hvac called me and came out the next day. He was very honest and gave me great recommendations for my system. I would definitely recommend!"
Response time6 hrs
Response rate94%
Recommended by90%of homeowners
Avatar for New England Quality Air Solutions
New England Quality Air Solutions
4.7(
296
)
Air Ducts & Vents - Clean

Serving Princeton, MA and surrounding areas

Approved

In business since 2005

Free estimates

Offers commercial services

"The staff at NEQAS provided a high quality of service and professionalism. They gave clear explanations and expectations of the work that need to be done in order to get the best air flow. The work was completed at the set timeline and the quality of care for our home was a top priority. They also gave us advice for care and future maintenance. Thank you for your service and we would recommend NEQAS for duct work to anyone."
Before Cleaning-Air Ducts
Air Duct - After Cleaning
Before-Air Duct Cleaning
Air Duct Cleaning
Before-Air Duct Cleaning-Commercial

+6

Recommended by98%of homeowners
Avatar for VVS HVAC & Home Improvement Services LLC
VVS HVAC & Home Improvement Services LLC
5.0(
5
)
Heat Pump - Install or ReplaceCentral A/C - Service or RepairCentral A/C - Install+4 more

Serving Princeton, MA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of HVAC services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! \n

Boiler
Furnace installation
Furnace installation
Furnace installation
Furnace installation

+11

3 neighbors recently requested a quote
Avatar for Landry Mechanical, Inc.- HVAC
Landry Mechanical, Inc.- HVAC
4.5(
107
)
Central A/C - Install

Serving Princeton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Emergency services offered

Warranties offered

"Ray and his team replaced both of my 20 year old HVAC units and did a great job. Ray listened to my requirements and proposed HVAC units best suited for the attic and basement. Very happy having the same temperature throughout the house."
Mitsubishi Ductless
Furnace install
Water filtration
Stretching out during a hvac install
New heat pump and furnace

+50

Response time11 hrs
Response rate97%
14 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

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.

There are several steps you can take to prevent your AC drain from clogging. This includes cleaning the drain line at least every three months, changing the filter every one to three months, and getting your AC serviced annually. Also, if any problems arise with your AC, hire an HVAC technician to deal with them ASAP.

Water buildup in your HVAC system is a cause for alarm. If water accumulates in your ductwork, it can drastically lower your home's air quality and create safety hazards. These risks include mold growth, damage to your HVAC system, and attracting pests that are seeking water into your ducts. Proper insulation and sealing of ducts can prevent this, and regular inspection and maintenance can address water damage problems before they become too severe.

Modern AC leak sealants work as a temporary measure to stop refrigerant leaks. You can purchase them at most home improvement stores or on online. When using an AC leak sealant, keep in mind that it’s only a temporary solution, so you’ll still need to hire a pro to install a replacement part as soon as possible.

HVAC pros recommend that you replace your AC filter every one to three months to maintain optimal indoor air quality and ensure your HVAC system operates efficiently. However, factors such as filter type, household size, and environmental conditions may influence the frequency of replacement. Regular filter changes help prevent debris buildup, maintain airflow, and prolong the life span of your air conditioning unit.

The Princeton, MA 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.