When your heating or cooling system fails, you need help fast. At 717 Mechanical LLC, we give urgent HVAC breakdowns priority scheduling so homeowners in Marietta, PA and throughout Lancaster County can get comfortable again as quickly as possible.
Our factory-trained technicians have over 14 years of experience diagnosing and repairing emergency furnace, air conditioner, boiler, and water heater problems. The fastest way to reach us is to call (717) 468-9567 and describe what's happening.
For routine service, see our AC repair and furnace repair pages.
Priority Scheduling
Upfront, Honest Pricing
14+ Years Experience
Not every issue can wait for a scheduled appointment. These are the situations we move to the front of the line. Call us right away if you're dealing with any of the following:
When the outdoor temperature is below freezing and the furnace, boiler, or heat pump stops, a house loses heat quickly. Older homes in Marietta, Columbia, and Mount Joy with plaster walls, original windows, and supply pipes along exterior walls can be at risk of frozen pipes within a day. A no-heat call in January is always treated as urgent.
Lancaster County summers combine heat with heavy humidity, and an upstairs bedroom can climb well past the outdoor temperature by evening. For infants, older adults, and anyone with a heart or breathing condition, a dead air conditioner during a heat wave is a health problem, not just a comfort problem. We give these calls priority scheduling.
If you smell gas, leave your home immediately and call your gas utility or 911 first, then call us once you're safe. Do not flip light switches, unplug appliances, or use your phone inside the house. Once the utility has made the home safe, we can find and repair the source, whether it is a gas valve, a fitting, or a burner assembly on the furnace, boiler, or water heater.
A dusty smell for the first few minutes of the season when a furnace fires up is normal. A burning smell that persists, or a hot-plastic or electrical odor from the furnace, air handler, or outdoor unit, is not. It usually points to an overheating blower motor, a failing capacitor, or damaged wiring. Turn the system off at the thermostat and call us.
Water around the furnace or air handler is often a blocked condensate drain, but it can also be a failed condensate pump, a cracked drain pan, or on a high-efficiency furnace a problem with the secondary heat exchanger. Water from a tank water heater is a different matter: if the tank itself is leaking, shut off the cold water supply valve on top of the heater and call us, because a leaking tank does not get better on its own.
A breaker that trips once and holds after a reset may have been a fluke. A breaker that trips again is telling you the system is drawing more current than it should, which usually means a failing compressor, a shorted motor, or a wiring fault. Leave it off and call. Resetting it over and over risks turning a repair into a replacement.
Nothing happens at the thermostat, no fan, no click, no display. This can be as simple as a dead thermostat battery or a tripped furnace switch, or as serious as a failed control board. Run through the checklist below first, then call us if the system stays dead.
Our technicians handle urgent repairs across all of your home's comfort systems. Whatever has failed, we diagnose the cause first, quote the repair before any work begins, and finish on the same visit whenever the part is on hand.
No-heat calls in winter are most often an igniter or pilot that will not light, a dirty flame sensor, a tripped high-limit switch from a clogged filter, or a blower motor that has quit. A furnace that short cycles, runs without producing heat, or trips its safety switches is unsafe to keep restarting. Our furnace repair team handles furnace breakdowns across Lancaster County.
When the house will not cool during a heat wave, the usual causes are a failed capacitor or contactor, a refrigerant leak, a frozen evaporator coil from poor airflow, or a compressor that will not start. We carry the diagnostic tools to find the fault on the first visit. See our AC repair page for the full list of problems we fix.
A heat pump can fail in either season. In winter that looks like a unit stuck in defrost, an outdoor coil encased in ice, or auxiliary heat that never kicks in; in summer it looks like any other AC failure. Reversing valve and defrost control problems need a technician who works on heat pumps regularly. Our heat pump repair service covers both heating and cooling failures.
Many older homes in Marietta, Columbia, and Lancaster city still heat with hot water radiators or baseboard. A boiler emergency is usually a no-heat condition from an ignition failure, low system pressure, a failed circulator pump, or a relief valve that will not stop dripping. Because these systems hold water, a leak can do damage quickly. Our boiler repair technicians work on both conventional and high-efficiency condensing boilers.
Ductless systems fail differently: an error code on the indoor head, a frozen indoor coil, water dripping from the wall unit because the condensate line is blocked, or a communication fault between the indoor and outdoor units. We read the fault codes and repair the cause rather than resetting the unit and hoping. Details are on our mini-split repair page.
No hot water is a same-day problem for most families. On gas tanks the cause is often a pilot, thermocouple, or gas control valve; on electric tanks a failed element or thermostat, or a tripped breaker. A leaking tank, however, means replacement rather than repair. Our water heater repair team diagnoses the cause and tells you honestly which situation you are in.
However urgent the situation, we provide honest, upfront pricing and a clear recommendation before any work begins.
Call for Emergency ServiceA surprising number of no-heat and no-cooling calls have a cause the homeowner can find in five minutes. Run through this list before you call. If it fixes the problem, you have saved a service visit; if it does not, you will be able to tell us exactly what the system is doing, which speeds up the repair.
While you wait for a no-heat repair in freezing weather, close off unused rooms, open cabinet doors under sinks on exterior walls, and let the farthest faucet drip to keep pipes from freezing. Use portable heaters only on the floor, away from bedding and curtains, and never a gas oven or grill for heat.
We do not promise a fixed response time, because an honest answer depends on where you are, what has failed, and what the day already holds. What we do promise is this: urgent breakdowns go to the front of the line, and we aim for same-day service whenever the situation allows.
When you call, we ask a few questions to understand how serious the problem is. A family with no heat and a newborn in the house, or an older homeowner with no cooling in July, gets scheduled ahead of a routine tune-up every time. We will tell you plainly when we expect to arrive rather than leaving you guessing.
On site, the technician diagnoses the fault, explains what failed and why, and gives you a firm price for the repair before doing the work. If the part is on the truck, the repair is finished on the same visit. If a part has to be ordered, we tell you how long that will take and what you can do to stay comfortable in the meantime. If the system is old enough that a major repair does not make financial sense, we say so and give you a replacement quote to compare, with no pressure either way.
Most emergency calls we run in January and July trace back to a part that was already failing in the fall or spring. Weak capacitors, dirty flame sensors, cracked igniters, and clogged condensate drains all show up during a routine inspection long before they take the system down on the worst day of the year.
A seasonal furnace tune-up in the fall and an AC tune-up in the spring catch those problems while they are cheap to fix. Our HVAC maintenance plan puts both visits on the calendar automatically, and plan members get priority scheduling when something does go wrong.
See Maintenance PlansAs 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.
When the heat or AC goes out, every minute counts. 717 Mechanical LLC provides fast, reliable emergency HVAC repair to homeowners in Marietta, PA and the surrounding communities, with honest pricing and experienced, licensed technicians.
Our shop is on Maytown Road in Marietta, which puts us minutes from the Susquehanna river towns: Columbia, Mount Joy, and Wrightsville across the river in York County. Those towns share our housing stock, with brick rowhomes and pre-war singles that still run on boilers, radiators, and furnaces installed decades ago, so we see the same failures again and again and know where to look. From Marietta we also cover Elizabethtown to the north, Mountville and Lancaster city to the east along with their close-in neighbors Millersville, Landisville, and East Petersburg, the northern towns of Lititz, Manheim, and Ephrata, and Hershey and Palmyra across the Dauphin and Lebanon County lines.
Priority scheduling applies everywhere we work. For urgent no-heat and no-cooling calls, the closer you are to Marietta the sooner we can usually be there, but we do not turn away an emergency anywhere in our Marietta, PA service area.
If your home has lost heating or cooling, the fastest way to get help is to pick up the phone.
Call (717) 468-9567 and we'll get to work on your emergency repair.
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