Furnace Repair in Easton, PA

A furnace almost never fails in October. It fails on the first genuinely cold night of the year, which is when every heating company in the Lehigh Valley is already busy. Plumbing Pros repairs gas furnaces, boilers and heat pumps across Easton, Bethlehem, Nazareth, Wilson and the surrounding towns.

Our diagnostic fee is $85, waived for members of our service plans.

Read this first if you smell gas

If you smell gas, do not touch light switches, do not use your phone indoors, and do not try to find the leak. Leave the house, then call your gas utility from outside. Once they have made it safe, call us and we will deal with the furnace.

If your carbon monoxide alarm is sounding, get everyone outside and call 911. Carbon monoxide has no smell. An alarm is the only warning you get.

Signs your furnace needs a repair visit

• No heat at all. Often the ignitor, the flame sensor or a tripped limit switch rather than the whole furnace.
• It lights, runs briefly, then shuts off. Classic short cycling. Frequently a dirty flame sensor or an overheating furnace protecting itself, and the underlying cause is often something as ordinary as a clogged filter.
• The blower runs but the air is cold. The burners are not staying lit.
• A yellow or flickering burner flame. A healthy gas flame is blue and steady. Yellow means incomplete combustion, and incomplete combustion is how carbon monoxide is produced.
• Soot or scorching around the furnace. Stop using it and call.
• Banging on startup. Often delayed ignition, where gas builds up before lighting. It is as unpleasant as it sounds and it should not be ignored.
• Rooms that never warm up while others are fine. Usually airflow or ductwork rather than the furnace itself.

What we check on a heating diagnostic

• Ignition system, whether it is a hot surface ignitor, an intermittent pilot or a standing pilot
• The flame sensor, which is one of the most common and cheapest causes of a no heat call
• Gas pressure and burner condition
• The heat exchanger, checked for cracks, because a cracked heat exchanger is a carbon monoxide risk and is the one fault that ends a furnace’s life outright
• Limit switches and safety controls
• The blower motor, the filter and static pressure
• The flue and venting
• Thermostat operation and wiring

You get told what failed, what it costs, and whether it is worth repairing before any work starts.

When a furnace should be replaced instead of repaired

Most gas furnaces last fifteen to twenty years. Three things push the answer toward replacement:

• A cracked heat exchanger. This is not a repair. It is a safety failure and the furnace is finished.
• Repeated failures in one season. Two or three calls on the same unit usually means the next one is coming.
• A repair cost that is a large share of a replacement on a furnace already past fifteen years.

If your furnace is genuinely worth repairing, we will repair it. Financing through Wisetack is available from $500 to $65,000 when replacement is the honest answer.

Why homeowners here call us

• Licensed for heating work. Owner Salvatore Sciorta holds Master HVAC-R licence 9380.
• Gas line work in house. We are a licensed gas line contractor, so a furnace problem that turns out to be a gas supply problem does not need a second company. See our gas line services.
• 650 Google reviews at 4.9 stars.
• BBB accredited with an A plus rating since June 2024.
• Boilers and radiant heat too. If you heat with a boiler rather than forced air, see boilers and radiant heating.

Common questions

How much does furnace repair cost in Easton?

The diagnostic visit is $85 and it is waived for service plan members. The repair depends on the part. A flame sensor cleaning and a blower motor replacement are very different jobs, and you get the price before we start.

Why does my furnace keep shutting off before the house is warm?

Short cycling usually means the furnace is overheating and shutting itself down, and the most common cause is restricted airflow from a dirty filter. Change the filter first. If it continues, the limit switch or the flame sensor needs attention.

How often should a furnace be serviced?

Once a year, before the heating season. Most no heat calls we take in January are failures that were visible in October.

Is a cracked heat exchanger really that serious?

Yes. It allows combustion gases, including carbon monoxide, into the air you breathe. It is the one furnace fault where we will tell you to stop using the system immediately.

Do you service oil furnaces?

Call and ask about your specific system before booking, and we will tell you honestly whether it is one we handle.

Book a furnace repair

Call or text (610) 686-9490, or email info@plumbingprospa.com. We serve Easton, Bethlehem, Nazareth, Wilson, Palmer Township, Forks Township, Bath, Hellertown, Wind Gap and the surrounding Lehigh Valley.

See our full HVAC services or what plumbing and HVAC work costs in Easton.