Whether your furnace quit on the coldest night of the year or you're planning ahead for a replacement, 717 Mechanical LLC handles every side of home furnace care: installation & replacement, repair, and seasonal tune-ups.
With over 14 years of experience, our factory-trained technicians install and service furnaces for homeowners in Marietta, PA and throughout Lancaster County. We're proud partners with Armstrong Air, AirEase, and American Standard, and we work on most major brands.
No pressure, no scare tactics: just straight answers about whether a repair, a tune-up, or a new system is the right call for your home and budget.
Licensed & Insured
Honest Repair-vs-Replace Advice
14+ Years Experience
Every furnace job starts with a real diagnosis and a clear explanation of your options. Pick the service that fits your situation, or call us and we'll point you in the right direction.
New Systems & Replacements
Right-sized, high-efficiency furnaces from Armstrong Air, AirEase, and American Standard, professionally installed with honest guidance on efficiency ratings and financing options.
Furnace InstallationFast, Honest Diagnosis
No heat, short cycling, strange noises, or rising bills: we diagnose the real problem and fix it right, with priority scheduling for urgent repairs.
Furnace RepairSeasonal Maintenance
A full fall safety inspection, cleaning, and efficiency check so your furnace is ready before the cold arrives. Also available as part of our maintenance plans.
Furnace Tune-UpNot sure where to start? Here's how we'd think about it:
No heat or weak heat right now? Start with furnace repair. If your home is getting dangerously cold, see our emergency HVAC service page - we offer priority scheduling for urgent repairs.
Furnace 15+ years old, or repairs adding up? It may be time to look at installation & replacement. We'll give you an honest read on whether your current system has life left, and financing is available on new installs.
Everything working fine? Keep it that way with a fall furnace tune-up or year-round coverage through our HVAC maintenance plans.
Weighing a furnace against other heating options? Our guide on boilers vs. furnaces walks through the differences for Pennsylvania homes.
Talk It Through With Us: (717) 468-9567
Preventative maintenance is one of the best ways to avoid costly repairs and keep your HVAC system running efficiently. Our maintenance plans include:
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 MoreAs 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.
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.
Enjoy 10% off your next repair call with us.
Take $500 off the installation of a new unit.*
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!
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.
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