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Heating, Air Conditioning & Plumbing Repair, Maintenance, and Installation in
South Jersey & Mercer County
Why Hire Us for Your Heating and AC Needs
Speedy Service
When your heating or air conditioning system malfunctions, you want things fixed as quickly as possible, right? As a result, the Professor’s fleet visits homes and families throughout South Jersey and Mercer County. Our experienced technicians arrive with fully stocked vehicles to get you back up and running quickly.
We Earn Your Trust
Yes, we are quick, but our pros are keen on details. They’ll go through everything with you to ensure you know what went wrong, why it happened and give you the best advice to repair. Customers tell us that they have never been treated more professionally and sensibly by a company. Only Professor Gatsby’s Heating and Cooling will give you that feeling of assurance and care. We are proud to stand behind our work with a 100% satisfaction guarantee!
We Are The Experts in Comfort Repair
Professor Gatsby’s expertise in both residential and commercial HVAC repair, installation, replacement and other HVAC maintenance systems, we provide reliable and efficient repair solutions to keep your business running smoothly. We expertise in both residential and commercial HVAC repair, we provide reliable and efficient repair solutions to keep your business running smoothly. Our HVAC services are straightforward. If it’s broken, we can fix it. If it’s working, we can maintain it. If it’s obsolete, we can replace it. And as for our work, we guarantee it.
5 STARS – 1 Reason
Although there may be many options, how we handle our customers sets us apart from the competition. We place a high value on the satisfaction of our clients, as seen by our 5-STAR RATINGS. For every HVAC South Jersey service we provide, we only employ the best and most experienced professionals, delighting our clients.



Proudly Serving These
South Jersey Areas and Mercer,
Proudly Serving These
South Jersey Areas,
Our Specials
Let’s warm hearts (and a home!)
this winter with Professor Gatsby’s
Warm the Heart Initiative!
With the coldest winter months fast approaching, we want to give a new heater to someone in need. Someone who could use a little encouragement. After all, home isn’t just where you live; it’s where you feel safe, comforted, loved… And warm.
Heating
All kinds of heating systems must be carefully selected and installed only by well-experienced professionals. Experts can recommend reliable brands and install the units according to industry standards. Letting professionals do the technical work will ensure the proper functioning of the entire heating system.
A/C
Everyone desires a cozy living space, especially when they are at home and want to unwind. Thanks to modern technology, it is now simpler than ever to maintain a suitable indoor temperature, regardless of the outside weather.
Plumbing


The Professor Does It All!



The Professor Does It All!



What People Say About Us
EXCELLENT Based on 569 reviews Cindy Miller2024-09-11Trustindex verifies that the original source of the review is Google. They saved the day!! I had water everywhere and they were able to dispatch a technician to my house immediately! The technician was courteous, professional and really knew his stuff! Thank Professor Gatsby!! Grace Zuccarello2024-09-06Trustindex verifies that the original source of the review is Google. 2 gentlemen showed up to take a look at our water pressure and well pump. Unfortunately they were not able to preform any tests because the previous plumber had left shoddy work, and they didn’t want to risk it. They suggested a few names for us to call. Their fee ($225, I think) was not cheap to pay, but at least they were honest and didn’t cause us bigger issues. Andrew Forehand2024-09-03Trustindex verifies that the original source of the review is Google. Doug Jones2024-08-29Trustindex verifies that the original source of the review is Google. Kathryn Garrity2024-08-29Trustindex verifies that the original source of the review is Google. Greg Arena (southjerseygma)2024-08-27Trustindex verifies that the original source of the review is Google. Replaced entire HAC system with a top-notch new system last month. Doing well so far. Thank you! Matt Chimento2024-08-23Trustindex verifies that the original source of the review is Google. Steven Mays2024-08-23Trustindex verifies that the original source of the review is Google. My existing system had a failure. I called Gatsby, and they sent a technician to diagnose the issue. Unfortunately the parts were unavailable and backordered 3 months. I verified this myself by hunting down the parts and not being able to find them anywhere. After discussions with the service manager Fury, I asked to get a quote on a new system. I received quotes from other companies as well, to ensure I was getting a fair price. The salesman Steve gave me a quote that was a few thousand less then the competition, and after researching the Amana line of products I decided to go with Gatsby for a new system. Steve then went above and beyond by going back to the main office to get AC units so that my family would be comfortable until the new system could be installed. This was 5:30PM on a Friday - superb customer service. Kyle and his crew started at 7:30 and finished at 7:30. It was a long day. At the end, Kyle walked me through everything explained everything they did thoroughly. The technicians were clean and treated my home with care, and went above and beyond replacing a valve that supplied my humidifier. It is now day 2 with the new system and it is humming along. It's super quiet. After the install I texted Steve the salesman a few questions and received answers back promptly. I did a lot of research on the system and the Amana S Series with a heat pump is the real deal. It replaced my carrier infinity system and it is much quieter, performs at least as well, and was several thousand dollars less. Along with top notch customer service, clean install, 10 year parts and labor warranty - I really feel Gatsby went above and beyond in every way possible. Edward Knowles2024-08-21Trustindex verifies that the original source of the review is Google. Always send great and personable professionals to our home. Thanks again for another good experience. Thanks Joe! Ray Dudek2024-08-19Trustindex verifies that the original source of the review is Google. Sean M was extremely knowledgeable in all facets of the system. Explained precisely what he would do and what recommendations he suggested to ensure peak performance. Very friendly and clearly an experienced technician. I would highly recommend him for any heating or AC needs. I hope to see him again!
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Latest Blogs


How Much Does It Cost To Replace A Gas Furnace?
Your furnace becomes the most crucial component of your home when the weather turns frigid. You need a working heating system to keep your house warm during the winter. But if your old furnace fails and repairs are pricey or frequent, you might consider a new furnace. Don’t freak out.


The Top 5 Causes of Furnace Failure and Potential Need for Furnace Repair Services
A furnace is an essential appliance in a home, particularly during the winter. It provides warmth and comfort when temperatures outside are at their coldest. Imagine the stress of returning home to a chilly house only to find that your furnace has broken down, necessitating the need to call a


Preparing Your HVAC System for the Changing Seasons: Summer to Fall Transition
As summer gradually gives way to fall, it’s time to shift your focus from keeping cool to staying warm and comfortable indoors. Properly transitioning your HVAC system from cooling mode to heating mode is essential for ensuring a seamless shift in seasonal comfort. In this blog post, we’ll delve into
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