Your Trusted Partner for Expert HVAC Solutions

Mercer County's Premier HVAC Contractor

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Experience Unmatched Comfort with Over 30 Years of HVAC Expertise


At Six HVAC, we bring over 30 years of expertise to cater to your residential heating and air conditioning needs. Our comprehensive services span Custom HVAC Design, HVAC Inspections, Thermostats, Ductwork, and more. Specializing in older HVAC systems, we provide 24/7 emergency service. Trust us for quality craftsmanship backed by our "Fix it Right or It's Free" program. Get upfront pricing, a 2-year warranty on repairs, and peace of mind with our drug-tested and background-checked team. Your home comfort is our priority - call 609-743-7758 to experience excellence today!

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Expertise and Reliability in HVAC Care


Experience matters, and at Six HVAC, we've proudly served Hamilton, Princeton, West Windsor, and Lawrenceville, NJ, for over three decades. As licensed, insured, and EPA-certified professionals, we handle everything from Electric & Gas Furnaces to Air Conditioner Installation & Repair with precision. Our A+ rating from the Better Business Bureau reflects our commitment to excellence. Enjoy worry-free services, transparent pricing, and a 2-year warranty on HVAC repairs. For trusted, reliable HVAC care, get in touch with us today.

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Our Comprehensive HVAC Services


At Six HVAC, we are your one-stop solution for all your heating, air conditioning, and indoor air quality needs. With over 30 years of dedicated service, we take pride in offering a wide array of professional services to ensure your home comfort.

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Your Expert in Indoor Air Quality Solutions!


Six HVAC provides air purifiers, humidifiers, CO detectors, and indoor air quality products and services in Hamilton, Princeton, West Windsor, Lawrenceville, and surrounding NJ areas.

If you or your family are experiencing health issues such as allergies and headaches, you should discuss these with your doctor and contact us to test your home for indoor air quality issues. If we find a problem such as mold, carbon monoxide, allergens, or other indoor air issues, we can take the necessary steps to fix them, including the installation of high-quality CO detectors.


Mold in your home may be an indication that your home's humidity is too high, in which case we can install a dehumidifier. If you are experiencing dry skin and hair, static, or nosebleeds, especially in the winter, your home may be too dry, and we can install a humidifier. Higher humidity in the winter can also make your home feel warmer, and you may not need to keep the temperature as high. If you suspect an indoor air quality issue in your home, don't wait; contact us today at 609-743-7758!

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Six HVAC Stands Apart in Customer Dedication


At Six HVAC, our dedication to customer satisfaction sets us apart. As members of the Eastern Heating and Cooling Council, we take pride in our A+ Better Business Bureau accreditation. Explore our wide array of services, including Air Purifiers, Humidifiers & Dehumidifiers, and Water Heater Installation & Repair. With our "Fix it Right or It's Free" guarantee, you can trust us to get the job done right the first time. Benefit from upfront pricing, a 2-year warranty on all HVAC repairs, and a team that's rigorously drug tested and background checked.

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Your Elite Heating Contractor Partner


As your premier heating contractor, Six HVAC takes pride in delivering top-tier heating solutions to ensure your home remains warm and comfortable, even in the coldest weather. Our expert team is equipped to handle a comprehensive range of heating services, including installation, repair, and maintenance of electric and gas furnaces, oil and steam burners, baseboard heaters, and radiant floor heating systems. With over 30 years of experience, our heating professionals prioritize efficiency, reliability, and your peace of mind. Trust us to keep your home cozy and welcoming throughout the seasons. Contact us today for unparalleled heating expertise.

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Elevating Your Atmosphere with Expertise


At Six HVAC, we transcend the ordinary to redefine your air conditioning experience. As your dedicated Air Conditioning Company, we don't just cool spaces; we craft comfort. With a blend of technical mastery and innovative solutions, we bring a breath of fresh, cool air to Hamilton, Princeton, West Windsor, Lawrenceville, and surrounding NJ areas.


When you choose Six HVAC, you're not just selecting an Air Conditioning Company; you're opting for a transformative cooling experience. Elevate your atmosphere with our expertise.

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GALLERY


Take a look at some of the Heater and Air Conditioner work we have performed for our Hamilton & Princeton and surrounding NJ area customers.

Pinnacle of Heating Excellence in Your Locale


Choosing the right heating contractor is paramount to ensuring your home's warmth and comfort, and Six HVAC stands out as the undisputed leader in the realm of heating services in Hamilton, Princeton, West Windsor, Lawrenceville, and the surrounding NJ areas.


  • Proven Expertise, Three Decades Strong
  • Licensed, Insured, and EPA-Certified
  • Specialists in Older HVAC Systems
  • Customer Satisfaction, A+ Rating
  • Fix it Right or It's Free" Guarantee.
  • Upfront Pricing and Transparent Communication.


Choose Six HVAC as your heating contractor and discover why we're not just a choice but the definitive best in the business. Contact us at 609-743-7758 and experience the pinnacle of heating excellence today!

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“It has been a pleasure to do business with your company for 15 years. Thank you for your wonderful service--prompt, efficient, and professional in every way. Continued success in all your future endeavors.”


Louise and Boyer Royal, Lawrenceville, NJ

“Six is responsive and persistent when faced with a system that needs replacing or adjusting. I have included him in my very cherished list of go-to professionals for over 10 years and never hesitate to refer neighbors and friends to him.”


Ellen Hecht, Lambertville, NJ

“I am pleased to have you on a regular maintenance plan for air conditioner, furnace, humidifier, and water filters both whole house and under sink reverse osmosis filtration. It is very reassuring to know you are a phone call away and come quickly whenever I have a problem.”


Serita Scott, Lawrenceville, NJ

“We have been clients of Six HVAC for 14 years now. Six came to our rescue after a botched brand new HVAC job that another company had done in our home renovation. Six was able to make the most of what had been done and then exceptionally improve the whole 4 zone system for our house. We continued working with Six and can only say the most favorable things about him. His commitment to excellence and exceptional customer service cannot be matched. Six has come to our rescue all hours of the day and night to repair and/or assess everything that inconveniently has come up. He came to our house at midnight on a freezing cold night when something went awry because he only wants his customers to experience the very best in service. I recommend Six HVAC on every level. His professionalism, expertise, warm engaging personality, loyalty and impeccable customer service is top notch…and it is always a pleasure to have him and his team around.”


Deborah Dorman, Princeton, NJ

“It has been my pleasure to have had the Heating and Air Conditioning installation, repair and maintenance services of SIX HVAC For over sixteen (16) years. During that time, there have been a couple of names changes for the firm but their technical ability and services has always been excellent. To me this means a timely response to a problem, regardless of the time of the day the problem occurs, as well as a regular routine maintenance every spring and fall. Their prices have always been fair. We have had one of their service contracts for the past few years and have been very pleased with their service under this contract. My wife and I are very certain that whoever retains SIX HVAC, will be retaining a firm of extraordinary mechanical skills and superior service.”


Donald Vosburgh, Hamilton Square, NJ

“We have used Six AC/Heating for the past 2 years. Two years ago, after speaking to many other companies in the Princeton area, we spoke to Six, and not only did he give us a fair price, but he completely explained the job in terms that we could understand so that we were able to make knowledgeable decisions. Our unit and space are very unusual, and Six and his staff came up with an inventive and efficient way of installing the units. His team was remarkably neat and clean. They thoroughly covered the floor (white carpeting) and set up an organized workspace that would not interfere with our using the room. Now, we have a maintenance contract with Six and they come on time and do a thorough maintenance that seems much more complete than previous companies that we have used. Last week, I got my first PSE&G; bill for the year and see that my monthly payment has been reduced thanks to the increased efficiency of the units that were installed. I have and would recommend this company to my friends and family.”


Andy & Beth Rothman, Princeton, NJ

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Frequently Asked Questions


  • Why is Six HVAC so popular?

    Six HVAC has emerged as the go-to choice for discerning homeowners seeking a reliable HVAC contractor. Our popularity is rooted in our unwavering commitment to excellence and a stellar track record spanning over 30 years. As a seasoned HVAC contractor, we pride ourselves on being licensed, insured, and EPA-certified professionals dedicated to meeting and exceeding industry standards. Our specialized expertise in older HVAC systems sets us apart, ensuring that every heating and cooling solution is tailored to the unique needs of our clients in Hamilton, Princeton, West Windsor, Lawrenceville, and the surrounding NJ areas.


    What truly distinguishes Six HVAC and contributes to our widespread popularity is our customer-centric approach. From 24/7 emergency services to our exclusive "Fix it Right or It's Free" guarantee, we prioritize customer satisfaction at every turn. With transparent communication, upfront pricing, and a team rigorously drug tested and background checked, Six HVAC has become synonymous with trust and reliability in the HVAC contractor realm. Our unparalleled commitment to delivering lasting, quality solutions has solidified our standing as the preferred choice for residential heating and air conditioning needs in the region.

  • What services do you offer?

    At Six HVAC, we take pride in offering a comprehensive range of services to address all your heating, air conditioning, and indoor air quality needs. Our expertise spans Custom HVAC Design, HVAC Inspections, Thermostats, Ductwork, and a variety of heating solutions, including Heater Installation & Repair, Electric & Gas Furnaces, Oil & Steam Burners, Baseboard Heaters, Radiant Floor Heating, and more. As your trusted HVAC Contractor, we specialize in older systems and provide 24/7 emergency service for your peace of mind.


    In addition to heating services, we excel in air conditioning solutions, covering Air Conditioner Installation & Repair, Water Heater Installation & Repair, including Tankless Water Heaters. Recognizing the importance of indoor air quality, we extend our services to Air Purifiers, Humidifiers & Dehumidifiers. With over 30 years of experience, we are licensed, insured, and EPA-certified professionals, ensuring top-notch service delivery. Our commitment to customer satisfaction is underscored by programs such as "Fix it Right or It's Free," upfront pricing, a 2-year warranty on all HVAC repairs, and a team that undergoes rigorous drug testing and background checks. Contact us at 609-882-6664 for all your residential heating, air conditioning, and indoor air quality needs.

  • What locations do you service?

    Six HVAC proudly serves residents in Hamilton, Princeton, West Windsor, Lawrenceville, and the surrounding areas in New Jersey. Our dedicated team of HVAC professionals is committed to delivering top-notch heating, air conditioning, and indoor air quality services to enhance the comfort and well-being of homeowners in these communities. Whether you reside in a bustling neighborhood or a quiet corner of our service area, you can trust Six HVAC to provide reliable and expert solutions tailored to your specific needs. Contact us at 609-882-6664 to experience our exceptional services and elevate the climate control in your home.

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