Heating Services in South Jersey & Mercer County

At Professor Gatsby’s Heating, Cooling & Plumbing, we provide a wide range of heating services to meet the needs of our customers in Cherry Hill, Williamstown, Sicklerville, Mullica Hill, Princeton, Lawrenceville and other surrounding towns in South Jersey & Mercer County. Our team of certified HVAC & Plumbing professionals have extensive experience installing, repairing, and maintaining all kinds of heating systems. We also offer Same Day Emergency Heating Repair Services!

What Type of System Do You Have?

  • $49 Gas Furnace or AC Tune-up
  • Up to $1,500 Off New Heater or A/C
  • 0% Financing Available

Click Here for Specials

Why choose us to be your Heating Repair Company

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 Southern New Jersey. The tools and components in our vehicles ensure our clients a quick fix of the HVAC at the initial service visit.

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 comprehend the issue. 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. You can trust our heating and cooling contractors!

We Are The Experts in Comfort Repair

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 service we provide, we only employ the best and most experienced professionals, delighting our clients.


$49 Off Your Service Repair

Expires 7/31/2024
(cannot be combined with other offers)


$1500 Off System Replacement
0% Financing, Rebates, No Money Down

Expires 7/31/2024
(cannot be combined with other offers)


$49 Gas Furnace or A/C Tune-Up

Expires 7/31/2024
(cannot be combined with other offers)

$49 Gas FurnaceAC Tune up
$1500 off at Professor Gatsby's NJ Heating and Cooling
$49 Gas FurnaceAC Tune up at - Professor Gatsby's NJ Heating and Cooling

Frequently Asked Questions

Yes! In almost all cases, we can be out to repair your system that same day! We are in the service business, so we do our absolute best to respond as quickly as possible to keep your family as comfortable, as quickly as possible.

There are many things to consider when deciding to replace or repair.

Have you had a thorough diagnosis from a reputable company?
It’s important to be educated on what’s wrong with your system to make the best decision for your home. If you just need a second opinion to make sure this is the best solution for you, we can help. If you’ve decided replacement is best, we can offer you a free estimate.

Are you having frequent repairs on your system?
As systems age, like your car, will cost you more and more up until the point of complete failure, often times at the most inconvenient time, like the dead of winter replacing your system before these continued repairs will save you money and also keep your family comfortable.

Are you overpaying for Utilities?

Your older heating and air conditioning system is no longer operating at it’s manufactured efficiency rating. This combined with the newer, higher efficiency systems available today, the rising cost of electric and gas makes replacing now an easy decision. Today’s systems are also safer and provide much more comfort, due to technology that wasn’t available previously. Did you know there are electric and gas rebates and financing available to replace your system and save? Click Here to learn about programs in your area.

Click Here to view the service areas.

Generally speaking, if your system isn’t working currently, you would need a repair or a service call. If everything is operating, you would most likely just need some routine maintenance / tune-up. Here’s what a tune-up includes https://profgatsby.com/maintenance/

Joe Fecher
Joe Fecher
From my first phone to request service to Ryan arriving on time he couldn’t have been nicer. Gatsby is lucky to have such a highly talented technician on their team!!! Will definitely be using them in the future! Thanks again to Ryan!!!!
Raymond Scelfo
Raymond Scelfo
My service tech Sal was amazing. Very well educated about plumbing. Extremely helpful and very kind. Great work, i am VERY pleased, he saved me from having issues months down the road!
Art Vandelay
Art Vandelay
Very professional, courteous, and clean. The work and surrounding areas look great. The work was scheduled for two days but the crew managed to complete in one day. Would definitely recommend and rely on their service snd expertise in the future.
Dianne Berryman
Dianne Berryman
He was very nice and explained everything he took care of. I think he did a great job.
Deb Pantisano
Deb Pantisano
We have been using Professor Gatsby for many years for our heating and air ! We can't say enough about the quality of workmanship they provide! They are So respectful upon entering your home! They communicate with you ! We recently needed a bathroom upgrade! As they do plumbing we had them install our Jacuzzi tub, toilet and faucets. We are so happy with the Quality of work they provided with very reasonable prices ! We highly recommend calling them first! You will not be disappointed! We give them a 5 Star Review!!
Kathy Keller
Kathy Keller
Chintan Chhaya
Chintan Chhaya
I had 2 hvac systems installed on 12/8/23. Within 24 hours, one system stopped working due to "poor airflow." it was resolved, then on 2/1/24 (approx. 1.5 months later, the same system is now down - awaiting a technician). How is this possible? Total of 5 people (including installation, and 2 troubleshooting calls later), it is not working again. It hasn't even been 2 full months. Update: 2/2/24. Technician + Manager came out to troubleshoot, the issue was given high priority, and issue has been resolved. Although I was frustrated with the issue, Prof. Gatsby did resolve it by giving the issue high priority and appropriate level of attention. Was already signed up for long term maintenance package with them, will continue to do business with them. Update: 2/19. The Unit is non-functioning again (mere 17 days later - since last review). Quite frustrated with Professor Gatsby, and experiencing proper buyers remorse. On average, every 3 weeks, I have had to have a service call with professor Gatsby on a unit installed in Dec' 23. Very disappointed and frustrated. Would not recommend again.
Danielle Hellick
Danielle Hellick
Prompt and attentive. Makes effort to accommodate customer. Sal the technician was friendly, courteous and helpful. Went above and beyond and was sure to explain everything to me.
Susan Hartington
Susan Hartington
Joel was great. He fixed the problem and answered all my questions!!!
Joe Laraio
Joe Laraio
gas furnace repair at Professor Gatsby's Heating and Cooling

Gas Furnace/Heater

Natural Gas Forced Air systems are the most commonly used systems to heat a home in our area.

hvac services at Professor Gatsby's Williamstown

Gas Boiler

Boiler’s heat home’s by sending hot water from the boiler to a radiator or baseboard style heating system. Combi-Boiler’s add the ability to provide your hot water and heat with the same piece of equipment.

Heating and Cooling services in Meford NJ

Heat Pump

Heat pumps are common in homes that don’t have access to natural gas or are used as an alternative way to heat and also cool your home. Today’s Inverter technology can give the ability to operate with both gas and electric to have the cost benefit of both.

Ductless Mini Split System

Ductless Heating

A great solution for home’s that want to add heating or air conditioning in room’s that don’t have duct work or vents.


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. Property owners must also follow a sound maintenance plan to maximize the efficiency of the system. A carefully planned maintenance program will prolong the life of the equipment and prevent unnecessary breakdowns. But the heating repair and maintenance works should only be given to certified HVAC professionals like us at Professor Gatsby’s Heating, Cooling & Plumbing

Our company is one of the most trusted HVAC companies in Southern New Jersey. We cater to the heating needs of all types of clients across the region. We can install, repair and maintain all kinds of heating systems in homes, commercial properties and even industrial facilities. We offer our specialized services at reasonable rates, so clients like you will enjoy a hassle-free installation or maintenance service without worrying about the cost. This is one of the reasons why most property owners from Williamstown, Turnersville, Sewell, Blackwood, and Mullica Hill rely on us. We also have a lot of satisfied clients from Marlton, Cherry Hill and Glassboro, NJ. Please call us now at (856) 885-2231 to experience our kind of service.

Heating Installation

Heating installation is among the specialties of Professor Gatsby’s Heating, Cooling & Plumbing. We’ve been offering this service for years so we have already mastered the different installation methods and techniques. We always perform careful assessment of your heating needs before we recommend a specific type of heating equipment. Our aim is to provide you a reliable and highly efficient heating system at a cost that will suit your budget. We don’t want you to spend your valuable time, effort, and money for frequent repair and maintenance, so we only recommend proven and trusted brands. We are accredited installers of leading manufacturers so you are assured that the installation is done according to manufacturer’s specifications.

We are the company to hire if you are looking for people who can work fast but with great precision. We have well-trained HVAC technicians who can install all kinds of heating equipment – from furnaces and heat pumps to garage heaters. We can handle large installation projects in residential and commercial properties with no delays because of our state-of-the-art tools and equipment. Getting your desired heating equipment and materials will not be an issue for us since we have partnerships with leading suppliers and HVAC manufacturers.

Heating Repairs and Maintenance

You can ensure the proper functioning of your heaters by getting a reliable partner like us. For years, we’ve been the top choice of New Jersey property owners for our reliable heating repair and maintenance services. They prefer us over other service providers in the area for our effective maintenance services. We don’t just perform routine maintenance on your heating unit but also do a complete evaluation of the entire system. This approach helps us identify and correct possible issues on your heating equipment.

We are also the company to call for emergency heating repairs. Our HVAC technicians are always ready to be dispatched anywhere in South Jersey. They are fully-equipped with modern tools and equipment, so they can fix all kinds of heating issues onsite. They are well-trained in the repair of gas and electric powered heating equipment, as well as old and modern units. We also bring replacement supplies and materials to ensure the speedy completion of the repair job.