717 Mechanical LLC is a family-owned HVAC contractor serving Elizabethtown, PA from our shop in Marietta, about fifteen minutes away on Route 743. Since 2012 we have repaired, replaced, and maintained air conditioners, furnaces, heat pumps, ductless mini-splits, boilers, and water heaters for homes in the borough and the surrounding Mount Joy and West Donegal Township neighborhoods.
Elizabethtown is not one kind of house. Brick twins and frame homes near the square and Elizabethtown College were built long before central air existed, while the developments off Route 283 and out toward Masonic Village went up with ductwork and heat pumps already in place. We work on both every week, and we size and recommend equipment for the house in front of us rather than a brochure.
Need a repair today? Call (717) 468-9567 for same-day scheduling in Elizabethtown, or send the form and we will call you back.
Family Owned & Operated
LOCALLY-OWNED & COMMUNITY FOCUSED
OVER A DECADE OF EXPERIENCE
Elizabethtown sits at the northwest corner of Lancaster County, where Route 283 and Route 743 meet, which puts it on our regular route between Marietta, Mount Joy, and Hershey. That matters on a July afternoon when the air conditioner quits or a January night when the furnace will not light: we are close enough to get there the same day, and we already know the equipment and the housing stock. 717 Mechanical LLC handles repairs, replacements, and seasonal maintenance for every major piece of comfort equipment in an Elizabethtown home, so one call covers the whole house.
Warm air at the vents, ice on the copper lines, an outdoor unit that hums but never starts: these are the calls we take from Elizabethtown all summer. Our technicians handle central air conditioner repair on all major brands, diagnose the fault before quoting the fix, and carry the common parts (capacitors, contactors, fan motors) on the truck so most repairs finish in one visit.
When a compressor fails on a system past twelve or fifteen years, replacement is usually the better spend. We install central air conditioners sized by a load calculation for your actual house, and we walk through the repair-or-replace numbers with you on site before anything is decided.
A spring air conditioner tune-up catches weak capacitors, dirty coils, and low refrigerant before the first humid stretch exposes them. Elizabethtown homeowners who book ahead of the season get open scheduling and fewer mid-summer surprises.
A large share of the homes between the square and the college have no ductwork at all: they were built for radiators or gravity heat, and window units have been the only cooling option since. A ductless mini-split installation changes that. One outdoor unit feeds several quiet indoor heads through a three-inch opening, each room gets its own thermostat, and the plaster walls stay intact. Cold-climate models also heat, which makes a mini-split a practical year-round answer for an addition, a finished attic, or a whole no-duct house.
Northwest Lancaster County winters run cold and long, and a furnace that short-cycles or blows lukewarm air in December cannot wait. We repair gas and electric furnaces of every age, from ignition and flame-sensor problems to blower and control failures. When a repair on a fifteen-year-old unit no longer makes sense, our furnace installation team matches a high-efficiency American Standard or Armstrong Air model to your home's size and duct layout.
Many of the newer homes in Mount Joy Township and along the Route 283 corridor were built all-electric with a heat pump, and those systems are now reaching replacement age. Our ducted heat pump installation service replaces a tired unit with a properly sized high-efficiency model that handles both Elizabethtown summers and all but the coldest winter nights, with backup heat covering the rest. We also repair heat pumps that are icing up, running constantly, or failing to switch modes.
If your Elizabethtown home has cast-iron radiators or baseboard heat, the boiler in the basement is what wears out, not the radiators. We repair boilers with leaks, pressure problems, and cold radiators, and we install NTI high-efficiency boilers that keep the radiant warmth while cutting fuel use.
Rusty hot water, rumbling from the tank, or a puddle on the basement floor all mean the water heater is on its way out. We install Bradford White tank water heaters and Navien tankless units, and we handle water heater repairs and the annual flushing that Lancaster County's hard water makes necessary.
The heating and cooling problems we see in Elizabethtown split fairly cleanly by neighborhood. In the older borough, the typical call is an aging gas furnace or boiler, undersized or leaky ductwork that was added decades after the house was built, and hot second-floor bedrooms with no good way to cool them. Those homes do best with careful repair, sealed and balanced ducts, and ductless mini-splits where the ducts never reached.
In the newer developments in Mount Joy Township and West Donegal Township, the equipment is usually a builder-grade heat pump or gas furnace with central air that is now fifteen to twenty years old. There the conversation is about a right-sized, higher-efficiency replacement and whether a heat pump or a furnace-and-AC pair fits the way the house is used. Either way, we start with the house, not the nameplate on the old unit.
Elizabethtown gets every season at full strength. July and August bring long humid stretches that run air conditioners for hours at a time, and January regularly drops below twenty degrees, which means a furnace or heat pump may run for weeks with little rest. Equipment that works that hard on both ends of the year needs attention on both ends of the year. A spring cooling visit and a fall heating visit through our maintenance plan keep it efficient and catch the weak capacitor or dirty flame sensor before it becomes a breakdown.
Humidity is its own problem here. An oversized air conditioner cools the house quickly but shuts off before it pulls the moisture out, which is why a properly sized system, and in some homes a whole-house dehumidifier from our indoor air quality lineup, makes a bigger comfort difference than a lower thermostat setting.
We serve homeowners throughout the borough and the surrounding townships, including the neighborhoods around Elizabethtown College, Masonic Village, and the Route 283 and Route 743 corridors, plus the nearby communities of:
If you need heating, cooling, or water heater service in Elizabethtown or nearby, we are close and ready to help.
Call today to schedule your HVAC service in Elizabethtown, PA.
Get a QuoteElizabethtown is a college town, a retirement-community town, and a commuter town all at once. Families near the college and the Amtrak station, retirees in the homes around Masonic Village, and households that commute to Harrisburg or Lancaster on Route 283 all call us with the same basic need: a house that stays comfortable without a surprise repair bill. We have been answering that call from Marietta since 2012, and a good share of our Elizabethtown work comes from neighbors referring neighbors.
Because we are local, follow-ups are easy. If a repair needs a part ordered or a new system needs a second visit for a thermostat or a duct adjustment, we are back the same week, not the same month.
Every spring cooling visit and fall heating visit in Elizabethtown follows the same checklist:
We quote every repair before the work starts and every replacement in writing after a load calculation, so there are no surprises on the invoice. For new systems, financing through Service Finance and Wells Fargo can turn a replacement into a predictable monthly payment instead of a lump sum.
If your air conditioner stops cooling in a heat wave or your furnace quits on a freezing night, call us first. Urgent no-cooling and no-heat calls in Elizabethtown get priority on the schedule, and our goal is same-day AC repair or furnace repair whenever the situation allows.
Call Our Team
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.*
When you need heating, cooling, or water heater service in Elizabethtown, PA, call 717 Mechanical LLC. We have repaired, replaced, and maintained comfort equipment in Elizabethtown homes since 2012, from the older houses near the square to the newer developments along Route 283.
Whether you need a new air conditioner, a furnace repair, a heat pump replacement, a ductless mini-split for a no-duct home, or a new water heater, our technicians diagnose first and quote before the work starts. We install American Standard and Armstrong Air heating and cooling equipment, NTI boilers, Bradford White tank water heaters, and Navien tankless units, and we service all major brands.
Call us now to book your HVAC repair, installation, or maintenance service in Elizabethtown, PA.
Contact us online for a free estimate and straightforward recommendations.
Let's Get Started.
Contact UsLooking 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.
Schedule Service
© Red Barn Media Group 2026
