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.
In Elizabethtown the summer AC calls come from two kinds of houses: brick twins near the square, where central air was added decades after the house was built, and the Route 283 developments, where the original builder-grade condenser is now fifteen years old or more. Our central air conditioner repair visit starts with a diagnosis, and you get the price before any part is replaced.
When an Elizabethtown air conditioner is past saving, we install central air conditioners from American Standard and AirEase, sized by a load calculation for that house. A brick twin near Elizabethtown College needs different equipment than a newer West Donegal Township home, and we show you the repair and replacement numbers first.
Book your spring air conditioner tune-up before Elizabethtown's first muggy stretch. We clean the coils, test the capacitor, and check the refrigerant charge while the calendar is still open.
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.
Most Elizabethtown heating calls are gas furnaces: older units in the borough's brick and frame homes, and builder-grade furnaces in the Mount Joy Township and West Donegal Township developments, many now fifteen to twenty years old. We repair gas and electric furnaces of any make, and when an older furnace is no longer worth fixing, our furnace installation team sizes an American Standard or AirEase replacement to the house and its ductwork.
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. When one of those heat pumps ices over or will not leave defrost, we repair heat pumps too, and say plainly whether the repair is worth it.
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.
Hard water reaches Elizabethtown taps too, settling as sediment until the tank rumbles, runs short on hot water, or leaks. We handle water heater repairs and annual flushing, and when a tank is done we install Bradford White tank water heaters or Navien tankless units for borough and township homes.
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.
January nights in Elizabethtown fall well below freezing, and July brings humid afternoons that keep the air conditioner running for hours. A furnace in an older borough twin works harder than the same unit in a newer township house, and a builder-grade system fifteen winters old has little margin left. Our maintenance plan books a fall heating visit and a spring cooling visit, so a worn igniter or a weak capacitor gets replaced on schedule instead of during a cold snap.
Humidity is the complaint we hear most from second-floor bedrooms in the older homes near the square. An air conditioner too large for the house cools fast and cycles off before it removes the moisture, so the rooms stay clammy. Correct sizing fixes most of it; for the rest, a whole-house dehumidifier from our indoor air quality lineup helps more than turning the thermostat down.
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:
Every Elizabethtown repair is priced before we pick up a tool, and every replacement is quoted in writing after a load calculation, so the invoice matches the estimate. For a new system, financing is available through Wells Fargo and Service Finance; ask for current terms with your quote.
No heat on a freezing night or no cooling in a heat wave? Elizabethtown no-heat and no-cooling calls go to the front of our schedule, and we aim for same-day AC repair or furnace repair when scheduling allows. Route 743 puts the borough about fifteen minutes from our Marietta shop.
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 AirEase 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
