Pittsburgh-Area HVAC Service Built to Last a Generation.
Most contractors fix it and move on. We install, repair and maintain HVAC systems the way tradespeople used to — with the craftsmanship and accountability you'd expect from someone whose name is on the work. Serving Allegheny, Westmoreland, Fayette and Washington counties.
TRUSTED HVAC SERVICE IN SOUTHWESTERN PENNSYLVANIA
Heirloom Mechanical serves homeowners and businesses across Allegheny, Westmoreland, Fayette, and Washington counties. Repairs, replacements, maintenance — done right the first time.
REQUEST SERVICE5.0
Google Rating
50+
Google Reviews
24/7 Emergency
Service Available
Licensed & Insured
Background-Checked Techs
PA HIC Registered
No. PA196206
50+ combined years
50+ years of combined HVAC and business experience across our team.
Five-star service
Consistently five-star rated by homeowners and businesses across southwestern Pennsylvania.
Financing available
Flexible financing available for qualifying equipment replacements.
HVAC SUPPORT BUILT AROUND YOUR PROPERTY
Residential HVAC
Repairs, replacements, and maintenance for heating and cooling systems in your home — done right, on time, and explained clearly.
EXPLORE RESIDENTIAL SERVICESCommercial HVAC
From rooftop units and ductwork to boilers and split systems, we service commercial properties of all sizes across southwestern Pennsylvania. Our technicians carry the parts and training to diagnose fast, repair right, and keep your building running — with maintenance contracts available for facilities that can't afford surprises.
We've completed commercial installations and service contracts for light industrial, retail, and multi-unit properties throughout Allegheny, Westmoreland, Fayette, and Washington counties.
EXPLORE COMMERCIAL CAPABILITIES
CORE SERVICES — HELP WHEN YOU NEED IT. BUILT TO LAST
Heating & AC Repair
Prompt diagnosis and honest repair options for furnace repair, air conditioning repair, and all residential and commercial heating and cooling problems — available 24/7 for emergencies.
REQUEST SERVICEHVAC Installation & Replacement
Properly sized and professionally installed heating systems, cooling systems, and HVAC equipment for lasting comfort and peak efficiency — with financing available for qualifying projects.
VIEW INSTALLATION OPTIONSHVAC Maintenance
Preventive maintenance visits that keep your heating and cooling system running efficiently, catch problems before they become failures, and extend the life of your equipment.
VIEW MAINTENANCE OPTIONSWhat Our Customers Say
Joe Stetor
September 2, 2026
Prompt professional service. AC condenser repair.
Scott Noga
August 18, 2026
Great work!!!
Will Hoffman
July 1, 2026
I woke up on the hottest day of the year and our air conditioning was broken! They had somebody to my house before 8 AM and everything fixed by 8:30 at such a reasonable Price! Their staff was so incredibly professional and polite.
Jason S
June 28, 2026
Nice, clean install for a new mini split system. Heirloom has a solid, hard working team that got the job done right and on budget.
Travis Bickel
June 25, 2026
Honest, and professional. They didn't try up sale me stuff I didn't need.
Linda
June 10, 2026
Just got a mini split a/c unit installed by this company. Great unit, great price and great install crew. Very polite and cleaned up after the job was done. Would definitely recommend this company to anyone looking for reliable heating and air conditioning service and install.
Happy with our service? We'd love to hear from you.
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HVAC Service Throughout Southwestern Pennsylvania
Allegheny County
McKeesport · Bethel Park · Monroeville · Glassport · Baldwin–Whitehall · Jefferson Hills · West Mifflin · Elizabeth
Westmoreland County
Greensburg · Murrysville · Mount Pleasant · Irwin–North Huntingdon · Jeannette · Hempfield Township · Penn Township · Scottdale
Fayette County
Connellsville · Uniontown · Belle Vernon–Rostraver · Perryopolis–Dawson
Washington County
Canonsburg–Southpointe · Peters Township–McMurray · Washington
READY FOR HVAC SERVICE BUILT TO LAST?
Get in Touch
Fast, dependable HVAC service for Pittsburgh-area homes and businesses
We handle repairs, replacements, maintenance, and commercial HVAC throughout Allegheny, Westmoreland, Fayette, and Washington counties. For urgent issues, call us directly — we're available 24/7. Financing options available for qualifying replacements.
Heirloom Mechanical
Locations
Mount Pleasant
213 Elm Drive, Mount Pleasant, PA 15666Hours
Available 24 hours a day, 7 days a week for emergency HVAC service.
Need HVAC Service in Southwestern Pennsylvania?
We're available 24/7 for heating and cooling emergencies. Call now or request service online — we'll get back to you fast.