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Fast & Friendly Service for Central PA

E.W. Mainhart LLC offers fast friendly service for all your HVAC, plumbing & excavation needs. Also metal fabrication & screened topsoil and slate/stone. Specializing in everything from sand mound installations, water heaters & water softeners to metal ductwork fabrication. We also perform Safety Inspections and Emission Testing for cars, trucks, heavy trucks, campers and trailers!

What We Do

Explore our services and see why families have been choosing E.W. Mainhart LLC since 2004!



Leaking, inefficient or outdated fixtures, piping and plumbing equipment are a headache, eyesore and can cost you money, as well as hinder the enjoyment of your home. The E.W. Mainhart LLC team is ready to provide the service that you need to address all of your plumbing needs.

Plumbing Services »


When it comes to your home, comfort is key! At E.W. Mainhart LLC, we know how miserable it is when your heating and air conditioning system is not working properly. Our team of experts will inspect your equipment to find the root of the problem and repair it quickly, so you can get back to being comfortable in your home.

HVAC Services »


Since 2004, E.W. Mainhart LLC has been providing regional home and business owners with the most dependable, prompt, and efficient excavation services available. From new residential property owners to repair services and commercial, we have the professional services needed for any excavation project.

Excavation Services »

Inspection / Repair Shop

In 2021, we found the need to keep our expanding fleet serviced well, so we opened a PA State Emission and Inspection station.  Not only do we service a multitude of vehicles, we also have the knowledge to take care of your heavy equipment needs.  We specialize in diesel mechanics, but offer a wide variety of care from inspections, oil changes, to engine repair on your cars to heavy trucks and trailers services.  E.W. Mainhart LLC is a FASS Fuel Systems dealer, South Bend Clutch and XDP representative.