Furnace Repair That Brings the Heat Back to South Central PA

A Local Heating Repair Team That Shows Up Fast

717 Plumbing and Heating is a veteran-owned company founded in 2025 and built on years of hands-on industry experience. We are licensed and insured in Pennsylvania. We repair furnaces in Mechanicsburg, Camp Hill, Carlisle, Harrisburg, York, and every town across our South Central PA service area.

We know the homes here, from century-old houses in Carlisle and York to newer builds in Hampden Township. Our winters are long, so furnaces work hard from October to April. We answer quickly, arrive with stocked trucks, and explain every finding in plain language.

Schedule Service.

Furnace Repair Services for Every Heating Problem We See

Furnace repair means finding and fixing the part that stops a furnace from heating safely. Most calls we get across Cumberland, Dauphin, and York counties fall into six groups. Each has its own causes and needs testing before we fix it.

My Furnace Won’t Turn On

A furnace that won’t turn on usually has a power, thermostat, or safety switch problem. We check each one, then test the control board to find where the call for heat stops.

My Furnace Is Not Heating or Blowing Cold Air

A furnace blowing cold air often runs its fan without lighting its burners. A dirty flame sensor, failed ignitor, or clogged condensate drain can cause it. On electric furnaces, a worn heating element is a common culprit.

My Furnace Is Short-Cycling

Furnace short-cycling means the system turns on and off every few minutes without warming the house. A clogged filter, overheating limit switch, or weak flame sensor can cause it. We fix the cause, not just the symptom.

Ignition and Burner Repair for Every Fuel

Ignition problems look different on each fuel type. Gas and propane furnaces use hot surface or spark ignitors and flame sensors. Oil furnaces rely on a nozzle, electrodes, and a CAD (cadmium sulfide) cell.

My Furnace Is Making Strange Noises

Loud furnace noises point to specific problems. Squealing often means a worn blower motor bearing. Banging at startup can signal delayed ignition, which needs attention right away.

24/7 Emergency Furnace Repair

Some breakdowns cannot wait for business hours. Our 24/7 emergency furnace repair service covers nights, weekends, and cold snaps throughout South Central PA.

Every repair starts with an honest diagnosis. If your furnace is near the end of its life, we tell you and walk you through furnace installation options with no pressure.

Get your furnace running again.

South Central PA’s Mixed Fuel Homes Change Furnace Repair

Pennsylvania homes heat with a wider mix of fuels than most of the country, shaping every furnace repair we do. The U.S. Energy Information Administration’s 2020 survey found that 52 percent of Pennsylvania homes heat mainly with natural gas. Another 26 percent use electricity, 13 percent use fuel oil or kerosene, and 6 percent use propane.

That fuel oil share is more than three times the national rate of 4 percent. One street here can have a gas furnace, an oil furnace, and a propane unit fed from a backyard tank.

Each fuel fails in its own way. A gas furnace often stalls at the flame sensor, ignitor, or pressure switch. An oil furnace tends to lock out from a clogged nozzle, a dirty filter, or a failed CAD cell. A propane unit can fail due to low tank pressure, and an electric furnace can fail because of a burned-out element or sequencer.

We train for all four. That means we don’t guess your fuel type or sell a new furnace because a part is unfamiliar.

Book a furnace diagnostic for any fuel type.

Warning Signs Your Furnace Needs Repair

A furnace usually warns you before it fails. In South Central PA, those warnings often appear on the first cold nights of fall. Watch for these signs:

• Your furnace won’t turn on, even with the thermostat set higher
• Vents blow cold or lukewarm air while the fan runs
• The furnace short-cycles, running a few minutes and then shutting off
• You hear banging, squealing, rattling, or humming sounds
• You hear clicking with no flame, or an oil burner keeps locking out
• Your heating bills rise while some rooms never warm up

Catching these signs early usually means a smaller repair and lower bill. If you smell gas or your carbon monoxide alarm sounds, get everyone outside first, then call for help.

Schedule a furnace inspection today.

Our Furnace Repair Process: From Start to Finish

Our furnace repair process follows the same six steps on every call. It keeps our work thorough and keeps you informed throughout.

1. Listen to you first. We ask what you noticed, when it started, and what fuel your furnace uses.
2. Check safety. We inspect the flame, venting, fuel supply, and safety switches before anything else.
3. Test, not guess. We measure voltage, ignitor and flame sensor readings, and the furnace’s temperature rise.
4. Quote in writing. You get a clear price and honest repair or replace advice before we start.
5. Repair with the right parts. We use parts rated for your make, model, and fuel type.
6. Prove the fix. We run full heating cycles and confirm the safety controls and thermostat work.

Nothing gets replaced without your approval. Start your furnace repair now.

Why Homeowners Trust 717 for Heating Repair

Homeowners here want a heating repair company that shows up, tells the truth, and stands behind the work. These six commitments guide every furnace call we take:

• Veteran Owned and Operated: We bring discipline and accountability to every home we enter.
• Licensed and Insured in Pennsylvania: Our license number is PA203524, and we carry full insurance on every job.
• Same-Day Service: Most furnace repair calls get a same-day visit.
• Honest Repair or Replace Advice: We recommend replacement only when repair no longer makes sense.
• 1-Year Warranty on Services: We back our repair work with a full-year warranty.
• Price Matching and No Hidden Fees: The price we quote is what you pay.

Our background-checked technicians treat your home with respect.

Book with a team you can trust.

Complete Heating Care for South Central PA

Furnace repair is only one part of how we keep South Central PA homes warm. Our heating services cover the full life of your system.

We handle furnace replacement and furnace installation when an older unit no longer pays to fix. Seasonal HVAC maintenance catches worn parts before the first cold night. We also repair and replace heat pumps and install ductless mini-splits for rooms your current system does not reach.

Every visit comes from a veteran-owned team licensed and insured in Pennsylvania, with honest pricing and a 1-year service warranty.

Schedule your heating service today.

Furnace Repair FAQs for South Central PA Homeowners

How much does furnace repair cost in South Central PA?

Furnace repair cost depends on the failed part, your fuel type, and your furnace’s age. Cleaning a flame sensor costs far less than replacing a control board or blower motor. We give you a written quote before work begins, with price matching and no hidden fees.

Should I repair or replace my furnace?

Repair makes sense when the furnace is in good shape and the fix costs a fair share of its value. Replacement often makes more sense when an older furnace needs a major part or keeps breaking down. We show you both options in writing, and you make the final call.

Do you repair oil and propane furnaces, or only gas and electric?

Yes, we repair gas, propane, electric, and oil furnaces across South Central PA. Each fuel type uses different parts, from flame sensors on gas units to nozzles and CAD cells on oil burners. Our technicians test the parts that match your fuel, so the repair is right the first time.

Why does my furnace keep short-cycling?

A clogged filter most often causes short cycling, along with an overheating limit switch or dirty flame sensor. A thermostat near a heat source can cause it too. Start by replacing the filter and call us if the problem continues.

Can you come the same day if my furnace won’t turn on?

Yes, most furnace repair calls in Mechanicsburg, Carlisle, Harrisburg, York, and nearby towns get a same-day visit. For nights, weekends, and cold snaps, our emergency furnace repair team is available 24/7. Before you call, check that the thermostat is set to heat and the furnace switch is on.

Is a loud or strange furnace noise dangerous?

Some furnace noises are a safety concern. A loud bang when the burners light can mean delayed ignition, so turn the furnace off and call us. Squealing is usually a worn motor part that needs repair soon. If you smell gas or a carbon monoxide alarm sounds, leave the home and call for help from outside.