Gas Furnaces

Furnace service.

Nerthling's Heating and Air Conditioning is the leading HVAC company in Erie, PA, for your furnace service needs. We service and repair all makes and models. If you need furnace service, we are the company to call. Our skilled technicians are qualified to solve just about any repair or installation that you throw at us.

How Much Money Can a New Furnace Save You?

Our AFUE energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit's AFUE value and compare it to a newer, more efficient system. You can even customize it to better match your home's system for a more accurate calculation.

AFUE Energy Savings Calculator

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This calculator does not guarantee actual costs or savings and is only to be used for educational purposes.

Customize to Your Home

Adjust these settings for a more accurate calculation:




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Historical Comparison

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** Data from U.S. Energy Information Administration
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Furnace Repair

Don’t get left in the cold! Is your furnace acting up, blowing cold air, or making too much noise? Our experienced team of professionals is here to keep your home warm and cozy. We repair all makes and models, and we will never try to sell you a service that you don’t need. Our technicians are honest and hard working, and we’re always transparent and fair about the work we do.

Furnace Replacement

Sometimes a repair is not sufficient to fix your furnace. Sometimes a new furnace is the most cost-effective and energy-efficient way to go. We will always be honest with you about a possible furnace replacement. We value our time and your money––we don’t want to perform repairs or service on an appliance that is in need of replacement.

If you do need a furnace replacement, we know how overwhelming it can be. Here are some of the frequently asked questions about furnaces that we get from some of our Erie, PA residents:

What Are The Different Types Of Furnaces?

Single Stage: A single-stage furnace has only one stage of operation. It can either be turned on or turned off.

Two Stage: A two-stage furnace has two settings––full and half speed. This is a more efficient way to heat and provides for better comfort, because it can move the air at a slower pace.

Variable Stage or Modulating: A variable-stage or modulating furnace modulates the speed and heat output based on the temperature outside and the desired comfort level. This furnace only works as much as you need it, making this type the most energy-efficient type of furnace.

What Is AFUE?

AFUE, or Annualized Fuel Utilization Efficiency, is a measure of furnace-heating efficiency. The higher the AFUE, the more efficient the furnace.

What Size Furnace Do I Need?

We can calculate the correct size furnace for your home. The number of BTUs, or British Thermal Units, needed to heat your home is dependent on a number of variables. Contrary to what you might think, a bigger furnace may not necessarily mean more heating power for your home. Call us at Nerthling's Heating and Air Conditioning, and we can set up an appointment to calculate the furnace size you might need.

“Nerthling’s was able to get a repair person to our house the same day when our furnace suddenly stopped working. When the service technician determined that we could not repair the unit, he had another employee to our house in under an hour to discuss options for replacement. John was thorough in explaining our options and was upfront with pricing and financing options. The sales process was easy to understand. The office staff did an amazing job of communicating and keeping us apprised of the status of our installation. The technicians that came to complete the install were knowledgeable, efficient and pleasant! They finished the job ahead of schedule. Our sales person followed up after the installation to make sure it was to our satisfaction and answer any question we had.
As painful as needing a new furnace was, every single person that we came in contact with at Nerthling’s went above and beyond to make it as easy as possible! Highly recommend!”

- Becky L.

“worker arrived as scheduled, she completed the furnace inspection in about an hour, shared details concerning rust building up on the heat exchanger.”

- michael m.

“From getting the estimate to the final installation, the team at Nerthling’s was very friendly, professional and informative. We were given 3 options for our project and the benefits of each one were explained without any high pressure upselling. The installation team did an excellent job, explaining everything that they were doing and answering all of our questions. When the job was done everything was cleaned up to our satisfaction. I would highly recommend Nerthling’s.”

-Brad R.

“I am very happy with Nerthlings Service, they were on time and fast repairing my furnace. They are very friendly and do a good job”

- jim j.

“Very professional. Excellent service and the installers who came were very helpful with any questions I might had. This was a new furnace that replaced my 42yr old one and these installers were great. Thank you.”

- Robert J.

“My wife and I have used Nerthlings for several years, and there was no discussion when our furnace quit, and we needed a new one. We bit the bullet and replaced the Furnace, AC and the water heater because they were all beyond their service life by years. The guys you sent in were very good. Professional and diligent. They were in and out in just a few hours and will be back to finish the AC when the weather breaks. They were a good team. Thank you. I hope our new equipment lasts until they carry us out of here by the handles. Thanks, Tim and Lois Ferguson”

- Tim F.

“Our carbon monoxide monitoring systems alarmed us that we had concerns about high levels of CO in our home. We called the experts at Nerthling's heating and cooling to assist us. Within hours after our call a technician was at our home to inspect our concern. Their technician was very courteous and explained each process that, he was inspecting on our furnace. The manager, Dave also contacted us and explained that our furnace's heat exchanger failed part was covered by the warranty that still existed on the furnace. That was fantastic news for us!! The heat exchanger was replaced, and our furnace has been running great ever since!! We can't thank the professionals enough from Nerthling's!!”

- Scott L.

Need Furnace Service?

Contact the experts at Nerthling's Heating and Air Conditioning.

Call us at 814-240-2297!