Fast, Honest Heating Repair for Your Home in Marietta

Furnace Repair in Marietta, PA

Facebook

Stay Connected

Follow Us
American Standard

FURNACE & HEATING REPAIR IN MARIETTA, PA

A working furnace is what stands between your family and a cold Marietta, PA winter. If your heating system has stopped producing heat, is blowing cool air, short cycling, or making noises it never made before, 717 Mechanical LLC provides furnace and heating repair for homes across Marietta and Lancaster County.

With 14 years of experience, our technicians start every call with a full diagnostic, explain what failed and why, and give you upfront pricing before any work begins. We repair gas furnaces of every make and model, and when scheduling allows we offer same-day service.

Family Owned & Operated

LOCALLY-OWNED & COMMUNITY FOCUSED

OVER A DECADE OF EXPERIENCE

Contact Us

Your Local Choice for Furnace Repair in Marietta, PA

A furnace that cannot keep up makes a home uncomfortable fast, especially during a January cold snap. Our furnace repair service finds the failed component, fixes it right, and gets your heat back on without guesswork.

Our Furnace Repair Process

At 717 Mechanical LLC, we provide thorough furnace diagnostics and expert repairs to address any heating system issues.

Step 1: Comprehensive System Inspection

  • Check furnace airflow and heat output.
  • Inspect gas lines and electrical components for safety.
  • Test thermostat and control system for proper function.

Step 2: Repair & Component Replacement

  • Fix ignition problems, pilot light failures, or burner issues.
  • Replace worn-out parts, including belts, motors, and switches.
  • Seal air leaks or ductwork issues affecting efficiency.

Step 3: System Testing & Safety Checks

  • Verify proper temperature regulation for consistent heating.
  • Check carbon monoxide levels for gas furnace safety.
  • Ensure airflow is balanced throughout your home.

Our experienced HVAC technicians deliver fast, reliable repairs to restore your home’s comfort quickly and efficiently.

Common Furnace Repairs We Handle

Most furnace failures come down to a handful of components. Every repair starts with a full diagnostic so we fix the actual fault, not just the symptom. Here is what the most common complaints usually point to:

  • No heat at all: often a failed ignitor, a dirty or failed flame sensor, or a control board that is no longer sending the call for heat. A tripped high-limit switch from restricted airflow is another frequent cause.
  • Short cycling: the furnace fires, runs a few minutes, and shuts down. Usually a clogged filter overheating the heat exchanger, a failing flame sensor, or an oversized unit. Repeated cycling wears out the ignitor and blower motor.
  • Blowing cold air: a blower motor running without a burner, a failed ignitor, a stuck gas valve, or a thermostat fan switch left on ON. On high-efficiency furnaces a clogged condensate line can also lock out the burner.
  • Yellow or flickering flame: gas burners should burn blue. A yellow flame points to incomplete combustion from dirty burners or a cracked heat exchanger, which is a carbon monoxide safety issue. Shut the system down and call us.
  • Strange noises: a bang at startup is usually delayed ignition from dirty burners, squealing is a worn blower motor bearing or belt, and rattling is typically a loose panel, ductwork, or a failing inducer motor.

Every repair finishes with the system testing and carbon monoxide safety checks described in our process above, so the fix is safe as well as working. Ask about our 10% off your next repair coupon when you schedule.

Heating Repair for Gas Furnaces of Every Make

We provide heating repair on all major furnace brands, whether we installed the system or not. Many of the parts that fail most often, such as ignitors, flame sensors, and capacitors, are quick to replace once the fault is confirmed, so a lot of heating repair calls are finished in a single visit.

Lancaster County has plenty of older homes with furnaces that have been running for 15 to 20 years. When a repair on an aging unit is no longer the sensible choice, we say so, and we walk you through the replacement options in our American Standard and Armstrong Air lineup. Either way, you get an honest heating repair recommendation and clear pricing before we start.

Looking for seasonal maintenance instead? Schedule a furnace tune-up in Marietta, PA.

Signs You Need Furnace Repair

A malfunctioning furnace can leave your home cold and uncomfortable, leading to higher energy bills and potential safety risks. Watch for these warning signs that your furnace may need professional repair:

No Heat or Weak Airflow

If your furnace blows cold air or airflow is weak, possible causes include:

  • Clogged air filters restricting airflow.
  • Blower motor issues preventing heat distribution.
  • Pilot light or ignition system failure in gas furnaces.

Strange Noises During Operation

Unusual sounds like banging, rattling, or screeching may indicate:

  • Loose or broken internal components.
  • Worn-out belts or bearings in the blower assembly.
  • Delayed ignition causing mini-explosions inside the heat exchanger.

Frequent Cycling or Difficulty Staying On

If your furnace turns on and off frequently, it could be due to:

  • Overheating caused by dirty filters or airflow blockages.
  • Malfunctioning thermostat sending incorrect signals.
  • Electrical control issues disrupting operation.

Yellow or Flickering Pilot Light (Gas Furnaces)

A yellow pilot flame instead of blue may indicate:

  • Carbon monoxide buildup, which can be dangerous.
  • Ventilation blockages or burner issues.
  • Gas supply problems requiring immediate attention.

Rising Energy Bills with No Change in Usage

  • Reduced efficiency due to dirt buildup on components.
  • Furnace struggling to maintain the set temperature.
  • Aging system requiring more energy to operate.

If you’re experiencing any of these furnace issues, 717 Mechanical LLC provides fast, professional repairs to restore warmth and efficiency to your home.

Not sure whether another repair is worth it on an older unit? Our guide on when to repair or replace your furnace lays out typical repair and replacement cost ranges side by side.

Service Areas for Furnace Repair in Marietta, PA

We proudly provide furnace repair services throughout our Marietta, PA service area, including:

Marietta, PA

Elizabethtown

Mount Joy

Columbia

Wrightsville

Hershey

If you need furnace repair near me, gas furnace repair in Marietta, or an emergency heating repair, we’re ready to help.

Get a Quote

Emergency Furnace Repair in Marietta, PA

If your furnace suddenly stops working, 717 Mechanical LLC offers priority emergency repair services to restore warmth to your home.

We provide:

  • Fast response times for urgent heating system failures.
  • Expert troubleshooting and same-day repairs whenever possible.
  • Service for all major furnace brands.

We understand the importance of fast, reliable heating service, especially in the cold Marietta winters.

Affordable Pricing & Convenient Financing for Furnace Repair

At 717 Mechanical LLC, we offer:

  • Upfront pricing with no hidden fees.
  • Flexible financing options for major repairs or replacements.
  • HVAC maintenance plan membership with repair discounts and priority scheduling.

We help Marietta homeowners keep their heating systems running smoothly without financial stress.

Call Our Team
HVAC Maintenance Plans

HVAC Maintenance Plans for Long-Term Savings

Preventative maintenance is one of the best ways to avoid costly repairs and keep your HVAC system running efficiently. Our maintenance plans include:

  • Seasonal tune-ups for heating and cooling systems
  • Priority scheduling to maintenance members
  • Discounts on parts and repairs
Contact Us to Learn More
Financing Options

Financing Options to Fit Your Budget

We believe every homeowner deserves access to reliable heating and cooling solutions, which is why we offer flexible financing options through companies we trust. Whether you need a new installation or a repair, you'll find a plan that fits your needs.

Learn More
Apply with Service Finance Apply with Wells Fargo

FAQs: Furnace Repair in Marietta, PA

Frequently Asked Questions About
Furnace Repair

Your furnace may need professional repair if you notice:
  • Cold air coming from vents instead of warm air.
  • Weak airflow or uneven heating throughout your home.
  • Strange noises like banging, rattling, or squealing.
  • Frequent cycling, where the furnace turns on and off too often.
  • A yellow pilot light, which may indicate carbon monoxide issues.
  • A sudden increase in energy bills without changes in usage.

Some of the most frequent furnace issues include:
  • Dirty or clogged filters restricting airflow.
  • Pilot light or ignition system failure in gas furnaces.
  • Faulty thermostats causing temperature inconsistencies.
  • Blower motor malfunctions leading to poor heat circulation.
  • Cracked heat exchangers, which can pose safety risks.

Most furnace repairs can be completed in 1–3 hours, depending on:
  • The type of issue (minor fixes take less time, major repairs take longer).
  • Availability of replacement parts if components need to be swapped out.
  • The furnace brand and model (some systems require specialized repairs).

Furnace repair cost depends on the failed part: an ignitor or flame sensor costs far less than a blower motor or heat exchanger. We diagnose the fault first, then give you upfront, no-hidden-fee pricing before any work begins, so you approve the exact cost. Financing is available for larger repairs.

A useful guideline is the 50% rule: if a repair costs more than half the price of a comparable new furnace, especially on a unit past 15 years, replacement is usually the smarter investment. For younger furnaces with a single failed component, repair almost always wins. We give you an honest recommendation either way.

You can safely check the basics: confirm the thermostat is set to heat, replace a clogged filter, and reset a tripped breaker. Anything involving gas, combustion, or electrical components should be left to a trained technician. DIY repairs there risk carbon monoxide leaks and can void your equipment warranty.

Usually not. Homeowners' insurance excludes breakdowns from normal wear and tear or age, which cause most furnace failures. Damage from a covered peril, such as a fire, a burst pipe, or an electrical surge, may qualify. Check your policy; we provide written diagnosis and repair documentation you can submit with a claim.

Strange furnace noises often signal mechanical problems:
  • Banging or popping – Delayed ignition or expanding air ducts.
  • Rattling – Loose internal components or ductwork issues.
  • Squealing – Worn-out blower motor or belt.
If you hear unusual sounds, schedule a repair before the issue worsens.

If your furnace won’t start, try these steps:
  • Check the thermostat settings and ensure it's set to heat.
  • Replace the air filter if it’s clogged.
  • Ensure the circuit breaker hasn’t tripped.
  • Verify the pilot light is lit (for gas furnaces).
If these don’t resolve the issue, call 717 Mechanical LLC for a professional diagnosis.

Frequent cycling can be caused by:
  • Dirty air filters restricting airflow.
  • A faulty thermostat misreading temperatures.
  • An oversized furnace that heats too quickly and shuts off.
A furnace tune-up can help determine the root cause and restore normal operation.

A well-maintained furnace typically lasts:
  • 15–20 years for gas models.
  • 20–30 years for electric models.
  • 10–15 years for oil furnaces.
Regular maintenance and timely repairs help extend your system’s lifespan.

COMMITTED TO EXCELLENCE IN HOME COMFORT

As a family-focused HVAC company, our mission is to provide honest service with a personal touch. We treat every home as if it were our own, ensuring high-quality workmanship and lasting results.

SPECIALS AND OFFERS

As a family-focused HVAC company, our mission is to provide honest service with a personal touch. We treat every home as if it were our own, ensuring high-quality workmanship and lasting results.

10% off your next repair

10% Off Your Next Repair

Enjoy 10% off your next repair call with us.

$500 off installation of a new unit

$500 OFF ONE INSTALL

Take $500 off the installation of a new unit.*

Get Expert Furnace Repair in Marietta, PA

A furnace that is repaired correctly the first time gives you consistent warmth, lower energy costs, and fewer surprises. When your heat goes out, 717 Mechanical LLC provides expert furnace repair to get your heating system running again and keep it running all winter long.

With 14 years of experience, our skilled technicians diagnose and fix heating problems quickly. From ignitors, flame sensors, and blower motors to control boards and heat exchangers, we handle every part of furnace and heating repair.

Service Areas for Furnace Repair

We proudly serve homeowners in:

Marietta, PA

Elizabethtown

Mount Joy

Columbia

Wrightsville

Hershey

If you are searching for furnace repair near me, heating repair in Marietta, or an emergency heating repair, 717 Mechanical LLC is here to help.

Get Started

Why Choose 717 Mechanical LLC?

Fast, expert furnace repairs – We quickly restore heat and comfort when your system fails.

Diagnostic-first repairs: we confirm the failed part before quoting, so you pay for the fix you need.

Upfront pricing with no hidden fees – Honest service you can trust.

Flexible financing options: budget-friendly help for larger repairs and replacements.

Service for all major furnace brands and models – Experienced technicians ready to help.

Schedule Your Furnace Repair Today

Call us now to schedule a furnace repair or emergency heating service.

Contact us online for a free estimate on your furnace repair.

Keep your home warm, safe, and efficient with professional furnace service from 717 Mechanical LLC.

Let’s Get Started.

Contact Us

More Furnace Services in Marietta, PA

Furnace trouble rarely stops at one job. See the full picture on our furnace services page, or jump straight to what you need:

Furnace Installation & Replacement - Right-sized Armstrong Air, AirEase, and American Standard furnaces installed with honest guidance on efficiency ratings and financing.

Furnace Tune-Up - A fall safety inspection, cleaning, and efficiency check so the system is ready before the cold arrives.

All Furnace Services

Serving Marietta, PA & Beyond

Looking for reliable HVAC services near Marietta, PA? We proudly serve Marietta and nearby communities, delivering expert heating, cooling, and indoor air quality services. Whether you’re in Columbia, Mount Joy, or Elizabethtown, our team ensures top-quality workmanship and fast, dependable service. Contact us today for all your home comfort needs!

AREAS WE PROUDLY SERVE

In addition to serving Marietta, PA, we provide HVAC services to the surrounding Lancaster County communities and beyond, including but not limited to:

No matter where you’re located in these areas, you can count on us for prompt, reliable service.

Schedule Service
717 Mechanical Service area in Pennsylvania 717 Mechanical Service area in Pennsylvania 717 Mechanical Service area in Pennsylvania

Contact 717 Mechanical LLC Today

Don’t wait to improve your home’s comfort and energy efficiency. Contact us today to schedule your HVAC service in Marietta, PA or one of the surrounding areas. Let us show you the difference of working with a team that puts your needs first!

Book Service (717) 468-9567

© Red Barn Media Group 2026