Your #1 HVAC Service
in Marietta, PA

Watch for these common warning signs that your AC system needs professional attention:

• Warm or lukewarm air blowing from your vents instead of cold air
• Unusual sounds like grinding, squealing, or banging during operation
• A sudden spike in your electric bill without a change in usage
• Your AC cycles on and off frequently (short-cycling)
• Ice forming on the evaporator coils or refrigerant lines
• Musty or burning smells when the system runs

If you notice any of these issues, 717 Mechanical LLC can diagnose and repair your AC quickly. Since we're headquartered right here in Marietta, we can often provide same-day service.

The cost of a new AC installation depends on several factors, including your home's square footage, existing ductwork condition, the efficiency rating (SEER2) of the unit, and any additional modifications needed. We provide free in-home estimates so you know the exact cost before any work begins — no surprises.

We also offer flexible financing options to make a new high-efficiency air conditioner affordable for every Marietta homeowner.

Both options have advantages depending on your needs:

• Traditional AC + Furnace: A reliable pairing if you already have a gas furnace in good condition. The AC handles cooling while the furnace covers heating.
• Heat Pump: Provides both heating and cooling from one system, using electricity. Modern cold-climate heat pumps perform efficiently even during Pennsylvania winters, and they can significantly reduce your energy costs.

Our technicians will assess your Marietta home's layout, insulation, and existing equipment to recommend the most cost-effective and comfortable solution.

Yes. Because our office and shop are located at 2710 Maytown Rd in Marietta, we can respond to emergency calls faster than any other HVAC company in the area. When your AC breaks down on a sweltering July afternoon, you won't be waiting for a technician to drive in from miles away — we're already in your neighborhood.

Call us at 717-468-9567 for priority emergency service.

Absolutely. We offer financing options to help Marietta homeowners afford new HVAC equipment without a large upfront payment. Financing is available for:

• Central air conditioner installations and replacements
• Heat pump and mini-split system installations
• Furnace and boiler replacements
• Tank and tankless water heater installations

Ask us about current rates and terms when you schedule your free estimate.

We recommend the following maintenance schedule to keep your HVAC systems running reliably:

• Air conditioners and heat pumps: Service once per year in the spring, before the cooling season begins
• Furnaces and boilers: Service once per year in the fall, before heating season
• Water heaters: Flush and inspect annually to prevent sediment buildup
• Air filters: Check monthly, replace every 1–3 months depending on usage

Consistent maintenance prevents breakdowns, lowers energy bills, and extends equipment life by years.

From our headquarters in Marietta, PA 17547, we serve homeowners throughout Lancaster County and surrounding communities, including:

• Columbia, PA — just minutes east on Route 441
• Mount Joy, PA — a short drive north on Route 772
• Elizabethtown, PA — approximately 15 minutes away
• Lancaster, PA
• Hershey, PA
• Lititz, PA
• Palmyra, PA
• Wrightsville, PA

Being based in Marietta means we can reach most of our service area in 30 minutes or less.

Upgrading to a modern, high-efficiency cooling system is one of the most impactful improvements you can make. Here's what to consider:

• SEER2 rating: Higher SEER2 ratings mean greater efficiency. We install systems rated 15 SEER2 and above.
• Proper sizing: An oversized or undersized unit wastes energy. We perform a load calculation to match the right system to your home.
• Programmable or smart thermostats: Automatically adjusting temperatures when you're away reduces energy waste.
• Sealed and insulated ductwork: Leaky ducts can waste up to 30% of cooled air before it reaches your rooms.

Our team will evaluate your Marietta home and recommend the most energy-efficient solution for your budget.

Yes. Water heater services are a core part of what we do. We install and repair both traditional tank water heaters (Bradford White) and tankless water heaters (Navien and NTI). Whether your current water heater is leaking, producing lukewarm water, or you're ready to upgrade to an on-demand tankless system, we'll handle the job from start to finish.

Choosing a local HVAC company like 717 Mechanical LLC offers real advantages over national franchises:

• Faster response times: We're headquartered in Marietta — not dispatching from a distant office.
• Accountability: As a family-owned business, our reputation in the community is everything. We stand behind every job.
• Personalized service: You'll work with the same experienced technicians who know your home and your system history.
• Fair pricing: No corporate overhead means competitive rates without sacrificing quality.
• Community investment: When you hire us, your money stays in Lancaster County.

We've been proudly serving Marietta and the surrounding area since 2012 — and we're not going anywhere.