(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

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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 6588 reviews
Princetön fixed a problem with my whole house generator that my previous dealer could not fix. They are very professional and responsive.
Thank you for your hard work
Excellent service! Stiven R is a true professional. He provided excellent service and answered all my questions. I strongly recommend him to anyone needing services to their HVAC SYSTEMS.
Technician is very professional and nice. He come on time and work fast. I am recommended this company.
Highly recommend this company. They were quick to help my grandma with a same day diagnostic. Martique was incredibly helpful, kind, and honest.
Update (July 2006) One of our AC units stopped working on a hot day in May. Ryan G. responded quickly and found the coolant was completely gone. He put a dye in the system to find the leak, and when he returned in June, he located it in the coil. He immediately contacted the manufacturer and dealer to order a replacement. Just two days later, Ryan back with the new coil and spent five hours replacing it and testing the system. Thanks to him, our AC has been running smoothly and we survived the 100+ degree heatwaves over the 4th of July! We are so grateful for Ryan's prompt, diligent work, and the office staff was equally courteous and efficient. Highly recommend!
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Mr. Gordon has done the maintenance of our furnace for the past three years. He is very professional, diligent, and patient. He takes time to check various things to make sure everything is working fine and the installation were done correctly. We are very happy.
Latrell the technician was very knowledgeable and answered all my questions
Technician was professional, knowledgeable and courteous.
Wilver completed the job quickly and cleaned up the bathroom area.
Always a great and quality experience. Today’s technician was especially great.
Dominic was great service was great.
Prompt service and communication by phone and text regarding arrival and appointment. Quick diagnostic and repair by knowledgeable technician very satisfied.
The guy they sent over was very nice very professional.
The service and knowledge was amazing. Very professional. Fatmir was a pleasure to work with. I appreciate his considerable knowledge with the work completed today. I would be pleased to have him back if other issues occur.
Great service, very responsive
Great service and follow up. Honest answers
As a former Weltman customer , I found the transition to this company to be easy. They are responsive , supportive and honest regarding timing for an urgent AC repair.
Cruz (or Cruise? we talked alot, I would hate to misspell his name!) the first Princeton Air Tech that I met was prompt , polite, informative AND able to diagnose and fix the problem with my outside unit quickly . He also took the time to educate me regarding preventive maintenance of the units .
We have been customers of McCalister for a long time. They are reliable and come when there is an emergency.. They call yearly to schedule a service visit. The office staff is very competent. The contractors who service the units are always professional and punctual. We highly recommend McCalister/ Princeton Air.
Technician was polite and professional. Answered al my questions
Dominic was great. Quickly identified and resolved the issue.
Tech (Alex) was on time, courteous, very professional. He let me know that, because of my contract w/McCallister, I would have no extra payment for the part needed.
Cruise did a great job! Found a small problem before it became a BIG one.
Mike G. was honest and gave me a thorough explanation of what my options were and how much they would cost. My water heater broke yesterday and it was replaced today!!
The technician was helpful and competent.
Mike from Princeton Air visited to give us a quote for a replacement water heater, both standard and tankless. I appreciated how informative the visit was and that Mike took his time to explain every little detail. Thank you!

(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.