SG Heating & Air Conditioning
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SG Heating & Air Conditioning
SG Heating & Air Conditioning LLC and its subsidiary, SG Plumbing LLP is a residential Heating, Ventilation, Air Conditioning, Plumbing and Home Performance contractor. We offer a full range of repair and replacement services for homeowners in Central New Jersey and Bucks County Pennsylvania, including Princeton, West Windsor, Hamilton, Cranbury, Millstone, Yardley, Morrisville and more.

When it comes to residential heating and air conditioning systems, SG Heating & Air Conditioning's mission is to provide the highest quality repairs and new product installations possible. SG employs trained, skilled technicians, and uses the latest tools and techniques to provide state-of-the-art service.

At SG, we treat our customers the way we would like to be treated - with respect and honesty, offering fair pricing and a strong warranty. Your complete satisfaction is our priority. For quality repair and installation service from licensed, certified HVAC, Plumbing and Home Performance specialists, call SG Heating & Air Conditioning today!
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Scott Greiff is the owner & Managing Member of SG Heating & Air Conditioning LLC and SG Plumbing LLP. He is a Licensed Master HVAC Contractor, BPI-Certified Energy Auditor in 4 Disciplines, a NATE-Certified HVAC Technician, and has over 40 years of trade experience. Scott founded SG Heating & Air Conditioning in 2004 with the mission "To provide our customers with the highest quality repairs and new product installations possible."
Keep your home comfortable all year round with expert heating & air conditioning services from SG Heating & Air Conditioning LLC. Our expert installation of HVAC Products in Central NJ and Bucks County, PA includes Mitsubishi, Carrier, Rinnai, Reme, and other top brands. HVAC components tend to have a lot of moving parts, and boilers are no exception: valves, pumps, heat exchangers, and ignition systems are all essential components of a boiler.
SG Heating & Air Conditioning's subsidiary, SG Plumbing LLP, offers complete repairs and installations of plumbing products. We perform emergency water heater replacements, provide sewer and drain cleaning services, repair faucets and toilets, and more! Our technicians are qualified to assist you with your plumbing needs and have experience working with most major plumbing brands.
In the event of a serious or prolonged power outage, having a reliable power source is not only convenient - it is potentially life-saving. Install a whole-house generator for your home with help from the experts at SG Heating & Air Conditioning LLC.
SG Heating & Air Conditioning is a BPI accredited contractor and participates in the New Jersey Clean Energy Home Performance with Energy Star Program. As your home energy specialists, we can help transform your whole house to reduce energy costs, improve comfort, durability and go green. By installing energy upgrades, you can save as much as up to 30% on your home energy bill, while improving the health, efficiency and comfort of your home.
Reviews (15)
Jason Hutches
Jason Hutches
Nov 29, 2021
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I attempted to install a new thermostat, which blew a fuse on the furnaces electrical panel (I didn’t know this until after the fact). They answered my call for help immediately, and although they couldn’t make it out, he walked me through the process step by step.
Highly highly recommend. Great response time, great demeanor and ungodly knowledgeable!!!
Chandan Dutta
Chandan Dutta
Oct 15, 2021
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Did 7 head 2 condenser Mitsubishi ductless splits in 3 levels.
Install went fast and smooth.
Ed B.
Ed B.
Oct 04, 2021
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This is my forever heating and AC repair company. They were recommended to me by a friend that uses them and has been satisfied. I was In a situation that I had no ac on a hot day and could find none of the people I knew that could help me. I called them almost as a last resort. Not only were they understanding of my plight, they were happy to help. Within 2 hours from my original call, I was up and running and getting cool. I was called all during the time for their arrival, they may be a few minutes late etc. excellent caring company. They were above and beyond professional. Awesome company
Jeremy Brady
Jeremy Brady
Aug 05, 2021
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They were the best
- competative
- courteous
- informative
They replaced our outdoor condenser and indoor coil units.
They even went the extra mile and provided us with window ac units while we were waiting for the repair.
Thank you!
Jennifer Kong
Jennifer Kong
Jul 19, 2021
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Positive: Professionalism, Quality, Responsiveness
I have had a maintenance agreement with SGHAC for over 10 years and always highly recommend this business to friends and neighbors. They installed our HVAC, furnace, and water heater over the years. They also fixed a plumbing problem! SGHAC has always been responsive even for an emergency.
Services: Install heating system, Repair outdoor systems, AC maintenance
John Mastellone
John Mastellone
Jun 24, 2021
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Installed my own central AC system 15 years ago and for 15 years was trouble free other than me replacing the capacitor last year. Then, in the middle of a 3 day heat wave, the compressor failed to turn on. Having no service contractor for past service, I called SG as a new customer and they were able to schedule me for the next day. The next day, two men showed up in a well equipped box truck and were able to fix the problem in about an hour.
They were on time as scheduled, professional, highly knowledgeable and the charge was very reasonable.
I highly recommend SG Heating & Air Conditioning
Bill McGill
Bill McGill
Jun 17, 2021
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High expertise and courtesy. For example, Zach did a fine job resetting our generator breaker that our town inspector failed to do. But Zach also did a thorough check of the inside and outside settings to be sure they were correct. He also went over a few control settings with me and changed our generator's weekly exercise test date and time. Extremely satisfied!
Don W.
Don W.
May 19, 2021
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Scott and his team are top knotch! My first meeting with them was when my furnace quit the Weds before Thanksgiving! Scott shot over and saved our Thanksgiving event. The team are straight shooter and provided us invaluable info when we changed our system and continue to provide the best service around. They get my highest recommendation!
Brian Mauger
Brian Mauger
May 14, 2021
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Tim was extremely helpful on those initial phone calls, when I was stressed about the water everywhere. He walked me through options and prices and patiently answered my many questions.
The two guys that did the actual work were meticulous and tidy. They answered my questions and explained their work.
Thank you all!
Brian
Michael Irene
Michael Irene
Apr 29, 2021
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When our water heater died early Monday morning, I had to scramble to find a replacement. Based on the great reviews here, I decided to try SG. From the first call to Janice in the office, to follow ups with Scott and his team, we were treated with respect and concern for our situation.The job was done that same day in a timely and professional manner, for a fair price. Will definitely go back to SG for any future plumbing needs!
Stephan J.
Stephan J.
Jan 06, 2021
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The old boiler in our house died on us in the early morning just a few days before Christmas. I saw SG's high ratings on Google and they were the first company I called. Right away I was speaking directly to Scott the owner, and later that day he sent out Zach, his tech, followed by Tim, his engineer. The old boiler was done for (it went from ok to spewing carbon monoxide just before 6am -- I never go a single day without working CO detectors in the house - and neither should you). Based on the estimate Tim wrote up on the spot, I put down a deposit for a replacement boiler. Given how it was just
Neal K.
Neal K.
May 01, 2019
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Always a great job and the service personnel always go out of their way to explain what they have done and if they see any issues .
I am a long term customer and always recommend them to other people.

Neal Klingaman
Katie I.
Katie I.
Nov 11, 2017
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Man, what a great company! Fair, honest and friendly!!!

I was up visiting my Mom and came to find out that her tankless hot water heater wasn't working (kind of one of those inconvenient emergencies!!). I went to the Rinnai website and found SG Heating and Air Conditioning as one of a few authorized service places and called them to see if they could help. Janice was so friendly and understanding and said they would try to accommodate us (it's important to understand this is at 8:30 AM on a Friday (Veterans Day - Nov 10, 2017). Before we hung up we had an appointment for between 12 and
Johnny D.
Johnny D.
Dec 14, 2016
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My experience with SG heating & air was negative. I spoke to Scott who I believe owns the company and he gave me a price to come over and check out the issue with my air conditioner. Scott came over checked out my unit and found a wire which blocked the compressor propeller from turning. He untangled it and it worked just fine. Scott then proceeded to charge me three times more than he quoted me. In addition he told me if I didn't pay him cash the price would be even higher. BAD EXPERIENCE don't know how this Character can sleep at night. This was my personal experience with
B. G.
B. G.
Oct 15, 2016
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Please note that I have not been compensated in any way for my review.

These guys were great!
I was faced with a tough choice; spend $2000 to line my chimney in order to use it with my 30 year old system, or consider replacing the entire system; furnace, central AC, and water heater now rather than wait until an emergency occurs and cobble together repairs until the system (well beyond its life expectancy) finally gives up. I sought out multiple bids on equipment replacement and decided to take the leap into an Home Performance with Energy Star Home Energy Audit. It required the use of an approved