(609) 799-3434

Reliable Heat When Your Furnace Stops Delivering It

A furnace that can’t keep up in January is a problem that won’t wait, and you shouldn’t have to wait for help either.

You’re noticing cold air from the vents, the system cycling on and off, or rooms that never reach the temperature on the thermostat. Princeton Air provides furnace repair across New Jersey, and our experienced heating technicians work quickly to diagnose the problem and restore the steady warmth your home depends on.

Reach out by phone or schedule online, and we’ll bring back the heat your family is counting on.


24/7 Emergency Furnace Repair

A heating failure on a winter night is more than an inconvenience.

Princeton Air is ready around the clock for emergency furnace repair across New Jersey.

Call now or request service online, and a responsive team member will arrange for a technician who arrives prepared with the tools and experience to restore safe, reliable heat to your home.

(609) 799-3434

4.7
Based on 6528 reviews
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Heating Help From a Team That’s Already Part of Your Community

The heating experts you call should already be part of the community you live in.

Princeton Air has repaired furnaces across New Jersey for more than 50 years. Our technicians are the same people working in neighborhoods throughout the state week after week, which means real familiarity with the heating systems actually installed in homes here, shorter response times, and a team you can count on long after the first service call.

Years in Business

Skilled employees

Emergency Service

Trucks on the Road

How We Handle Every Furnace Repair

Expertise and clarity shape every step of the process, from the first call through the moment your heat returns.

Here’s what the process looks like when you schedule furnace repair with Princeton Air:

Reach out by phone or online, whichever works for your day. A member of our team listens carefully, asks the right questions, and arranges a visit that fits into your schedule rather than around it.

The technician who arrives brings years of experience with the furnaces installed across New Jersey homes. They inspect the system thoroughly, explain what’s happening in language you can follow, and provide a clear estimate before starting any work.

The work gets completed with the careful craftsmanship Princeton Air has been known for since 1971. By the time the technician leaves, your heat is restored and the system has been tested to confirm it’s running the way it should.

(609) 799-3434

What Our Customers Are Saying

100% Satisfaction Guarantee

4.7
Based on 6528 reviews
Princeton Air Conditioning replaced my 25 year old central air conditioner. The sales person was very knowledgeable, made sure I was getting the correct size unit, explained the available options and got a quote out very quickly. They were very competitive on price and did an excellent job installing the unit. I am planning on having them provide all maintenance on the unit. I highly recommend Princeton Air Conditioning.
They are a great company, hvac techs where totally professional,
Ryan G is a knowledgeable, professional and has great customer service.
Martique was 5+! Extremely knowledgeable and thorough. I do have a significant concern about one of the inspection findings related to the evaporator coils. Will address directly with the company.
Helped with an electrical issue. Fair and affordable.
Great service and follow up. Honest answers
Dominic was very professional and installed my new Nest Thermostat in. He showed me some features and mage sure I had the app set up on my I- Phone. Dominic forgot to put the door back on my furnace but returned and put it securely back on.
I was very happy with the central air conditioning system Princeton Air installed for me. They were very prompt in getting a quote to me, were very competitive and did an excellent job with the installation. I plan on using them for all maintenance on the unit and highly recommend them.
I appreciate how responsive Princeton Air is. Tom did all he could to fix our system.
They did a great job. Nelson was very knowledgeable and professional.
MOST RECENT June 2026:
Weltman has been purchased by Princeton Air. They have been really great. A seamless transition on the customer side. Eric was just here to put in a new anti-scaling system and a pressure relief valve for the house. Very happy!

UPDATE:
Now in our home for almost 8 years and Weltman has never disappointed! Chris L came today and was completely professional and quick for our yearly inspection of our furnace before the cold winter! It’s great to know they keep great notes and, almost, know more about our system than we do!

Weltman will always make it right if something is wrong. They will also get to you ASAP! We have been customers since we bought our home 3 years ago and have been completely satisfied!
Teck was knowledgeable and courteous
The technician Alfredo is great
I was recommended Princeton Air by a friend and I’m very happy that I was. I had a hvac and furnace system that was 25 years old and in dire need of replacement.
Chris from the company came out very promptly and did a full review, taking the time to take me through the different options. From there we reached an agreement and within one week the team came out and did a full dual zone system replacement.
I was blown away by the professionalism and indeed sheer hard work of the installation team. They arrived at 08.30am and finished at 8.30pm working tirelessly to complete the job in one day. A huge thank you to Princeton air, Chris and the install team -Jorge Vizueta, John Jaramillo, Juan Torres and Jhonny Anacona for a really cool air conditioning experience. Thank you!
The repair man, Dominic came out this morning to inspect our AC system. He was extremely knowledgeable, incredibly kind, and explained things very well. I work in construction and can tell you that Dominic is one of the best I’ve seen in years. Princeton air is very lucky to have him as an employee as he is SUCH AN ASSET to your company.

I also want to give a special thanks to Leah the customer service representative I spoke to. Also extremely kind and helpful. I have had the worst two weeks of my life and two strangers taking the time to kind made my heart smile. Thanks again Leah and Dominic.
Norman was great!!! He has come before. His advice and work were great!!!! Unfortunately Princeton Air, formerly a family run business, has been bought by a large corporate group, and we have chosen not to use them any longer
The technician was thorough, knowledgeable and professional. He also called for an ETA and was punctual.
I wanted to say a BIG Thank you to Princeton Air and Jesus C for coming to our rescue when AC in our house wasn’t working (despite it working fine 3 weeks ago). My daughter and her friends arrived on Friday afternoon for a girls weekend. Even though the compressor unit outside was running, no air was coming through the vents inside the house. After talking her through a few things over the phone (none of which resolved the issue), I called Princeton Air.
Despite it being already 5pm on Friday, they dispatched a technician who arrived within an hour. Jesus C called me several times to keep me updated about the repair. Within 45 min, the air was blowing COLD!!
I highly recommend this company. I am beyond grateful for the prompt and professional service we received.
Thanks so much for the EXCELLENT service from Norman. He was very knowledgeable and so friendly. Really nice guy. Thank you Norman and thank you Princeton Air.
Just to let you know everything here is fine. Norman was wonderful!! Helpful and very friendly. Thank you Norman and thank you Princeton Air.
Great service , Ryan was fantastic
We recently had a new AC unit installed by Princeton Air and had a great experience from start to finish. The installation went smoothly, the team was professional, knowledgeable, and respectful of our home, and we are very satisfied with the quality of the work.
We did have one minor issue after the installation, but Dominic McGinley responded quickly and took care of it right away. His prompt service and commitment to making sure everything was working properly really stood out.
Overall, we’re very happy with Princeton Air and would highly recommend them to anyone looking for HVAC services.
Excellent technician with thorough explanation of the problem
Dillion was very pleasant ,He informed me what he was going to do what Needed to be done and afterwards Everything that was completed
Jorhe arrived and listened to what I needed in this routine service call and when he finished all my questions were answered & for the 1st time I’m able to understand the function and area each thermostat controls!
Cheers for you Jorhe!

(609) 799-3434

Furnace Problems Our Heating Team Resolves

When your heating equipment starts behaving differently, the cause is almost always identifiable with a proper inspection.

Princeton Air has repaired furnaces across New Jersey for more than 50 years, and the winters in this region place real stress on heating systems from November through March. Our NATE-certified heating technicians know where to look first based on what they’ve seen across decades of New Jersey service calls.

A system that keeps shutting down before it completes a heating cycle is usually signaling an airflow or safety-control issue. Overheating from a clogged filter, a faulty flame sensor, or a malfunctioning limit switch can all cause what heating professionals call short cycling. Our technicians identify which component is triggering the behavior and resolve it so your furnace completes full cycles and holds the temperature you set.

Uneven heating usually traces back to airflow, ductwork, or a blower that isn’t moving conditioned air the way it should. Leaky ducts in unconditioned crawlspaces or attics are a common cause, along with blocked vents or a blower motor running below spec. We evaluate the full air delivery path rather than assuming the furnace itself is the problem.

When nothing happens at startup, the cause is often the ignition system, the flame sensor, a safety switch, or a control board issue. Older furnaces with pilot-light ignition have their own failure modes, while newer electronic ignition systems present different diagnostic paths. Our technicians test each element in sequence to identify the exact failure, so the repair addresses the real cause rather than a guess.

Banging at startup can point to delayed ignition, which is a condition that needs quick attention because it can damage the heat exchanger over time. Rattling often indicates loose panels or a cracked heat exchanger, both of which require professional evaluation. Squealing typically means a worn belt or a motor bearing on its way out. We identify the source and handle it before secondary damage develops.

When the air coming through the registers feels weaker than it used to, a dirty filter is the most common cause, followed by blower motor wear, blocked returns, or duct issues that have developed over time. Our technicians assess the air handling side of the system and address whatever is actually restricting flow.

A furnace working harder than it should is almost always consuming more gas, oil, or electricity than it needs to. The usual culprits are clogged filters and worn components, along with issues like drifted gas pressure or combustion that’s out of specification. Princeton Air’s technicians measure combustion efficiency and system performance to identify exactly what’s pulling the equipment below its rated operation.

New Jersey Homeowners Trust Princeton Air With Their Heat

Choosing the right heating team matters more when the weather won’t wait and safety is on the table.

For generations, homeowners across New Jersey have relied on Princeton Air to keep their furnaces running through the coldest stretches of winter.

For more than 50 years, our heating technicians have diagnosed and repaired every kind of residential furnace installed across the region. Fifty years of winter service calls teaches a team a lot about how these systems fail and what it takes to keep them running reliably year after year.

Every furnace repair is handled by a technician with NATE certification, the recognized standard for HVAC work. The certification requires testing, ongoing training, and demonstrated competence, so the person performing your repair has proven they know heating systems before they arrive at your home.

Your heating system deserves more than a quick fix that gets you through the week. Our technicians diagnose the underlying cause, address it properly, and complete repairs that hold up through the rest of the winter and into the next one.

When a single company handles your HVAC, plumbing, electrical, and indoor air, you call one number when something comes up. A heating issue that touches an adjacent system like the electrical panel or the ductwork gets addressed as a connected problem rather than being passed between trades.

The furnace keeping your home warm is one of the most important mechanical systems you own, and our recommendations reflect that. We suggest the repairs that make sense for your system and your home, and we tell you clearly when something isn’t worth the investment.

(609) 799-3434


(609) 799-3434

Complete Heating Care From Princeton Air

Every part of your heating system is in good hands with Princeton Air.

Beyond furnace repair, our heating team handles every stage of ownership for the system that keeps your home warm. The experience and approach that define our repair work carry through to installation and replacement work, along with the ongoing care that extends equipment life.

When your furnace has reached the end of its useful life, a properly sized, well-installed replacement restores the reliable heat you need. Our team manages the removal of the old system, the installation of the new one, and the tuning and testing that make the difference between a good install and a great one.

For homes adding a furnace for the first time or converting from an older system, expert installation shapes how the equipment will perform for the next fifteen to twenty years. Careful sizing, clean venting, and proper combustion setup are what make a new install worth the investment.

Annual maintenance keeps a furnace running safely and efficiently through the winters it will face. A thorough seasonal service visit catches small issues before they become breakdowns and keeps efficiency close to the equipment’s design specification.

The air moving through your furnace is the air your family breathes all winter long. Whole-home filtration, humidity control, and UV purification work with the heating system to keep that air cleaner, and our team installs and services each with careful attention.


Stay Ahead of Heating Problems Year After Year

Annual care is the simplest way to protect the heating you rely on every winter.

You can stay ahead of unexpected issues through the Princeton Air Home Comfort Club. Membership gives you pre-scheduled maintenance, priority service, and thoughtful system evaluations that catch small concerns before they become repair calls.

You get reduced rates on service work, credits toward future installations, priority scheduling when you need it, and no dispatch fees when work is performed.

Membership extends across HVAC, plumbing, and electrical, so the same trusted team looks after every important system in your home. Ask about joining the Princeton Air Home Comfort Club when you call or schedule online.

Princeton Air Technician


Princeton Air Technician

Schedule Furnace Repair With Princeton Air

A furnace that can’t keep the house warm is one you shouldn’t have to live with for long. Our heating technicians are ready to diagnose the issue, explain what needs to happen, and restore the steady warmth your home depends on. Call Princeton Air or schedule online today to bring the heat back.


Frequently Asked Questions

Is it safe to keep running a furnace that isn’t working properly?

Probably not, and it depends on the symptom. A furnace that’s short-cycling or making unusual noises may develop into a larger problem the longer it runs, and any furnace producing unusual smells, visible soot, or any sign of a cracked heat exchanger should be shut off until a technician evaluates it. If you’re uncertain whether it’s safe to keep running, turn the system off and call Princeton Air. A technician can assess the situation and tell you whether the furnace is safe to operate while a repair is scheduled.

What should I do if my furnace stops working on a cold day?

Call Princeton Air right away. We answer calls 24 hours a day, 7 days a week, and we dispatch a technician to your home as quickly as the situation allows. While you wait, set the thermostat to off so you aren’t running a failed system, and keep interior doors open so any residual heat reaches more of the home. Extra blankets or layers help if the inside temperature drops. Do not use ovens, grills, or unvented heaters as substitutes, because carbon monoxide risk rises quickly with those.

What usually causes a furnace to stop heating?

The most common causes are ignition failures, clogged filters restricting airflow, faulty flame sensors, thermostat problems, and safety-control shutoffs. Older furnaces sometimes develop heat exchanger issues or gas valve problems, while newer systems are more likely to have control board or inducer motor failures. The specific cause is identifiable with a proper diagnosis, which is always the first thing our technicians perform.

At what age should I consider replacing my furnace instead of repairing it?

Most residential furnaces are built to last fifteen to twenty years with proper maintenance. Past that range, major component failures become more common and less economical to repair. If your furnace is approaching twenty years old and is facing a significant repair, replacement is usually the better long-term choice. A Princeton Air technician can walk through the numbers with you so the decision is made with real information rather than pressure.

Do you service both gas and oil furnaces?

Yes. Princeton Air technicians are trained on gas-fired, oil-fired, and electric furnaces across every major residential brand. Gas and oil systems each have their own combustion characteristics, diagnostic paths, and common failure points, and our team is experienced across all of them. Whatever your home runs on, we can service it.