Residential & commercial
HVAC Installation & System Replacement in Greater Pittsburgh
Whether you're replacing an aging system or installing HVAC in a new space, Heirloom Mechanical provides professional installation and system replacement throughout Allegheny, Westmoreland, Fayette, and Washington counties. Financing may be available for qualifying residential projects.
Systems We Install
Gas furnaces
High-efficiency gas furnaces for residential and commercial applications
Central air conditioning
Split systems and packaged units for whole-home and commercial cooling
Heat pumps
Air-source heat pump systems for efficient year-round heating and cooling
Ductless mini-splits
Single-zone and multi-zone ductless systems for homes without ductwork
Boilers
Hot water boiler systems for residential and commercial hydronic heating
Complete HVAC systems
Full heating and cooling system replacement in a single project
Our Installation Process
In-home assessment
We evaluate your home or building, existing equipment, ductwork, and comfort goals to recommend the right system.
Equipment selection
We present options that fit your needs and budget, including efficiency ratings and available financing.
Professional installation
Our certified technicians handle the complete installation, including removal of old equipment.
System commissioning
We test and commission the new system to confirm it's operating correctly and efficiently.
Walkthrough
We walk you through the new system's operation and answer any questions before we leave.
Project Spotlight
Recent Propane Furnace Conversion — Dawson, PA
This Fayette County project involved replacing an outdated furnace with a new Rheem high-efficiency propane unit. The installation included updated ductwork connections and was completed as part of a broader heat pump upgrade — giving the homeowner a modern, dual-fuel system built for southwestern Pennsylvania winters.
Serving Fayette County including Dawson, Connellsville, and Uniontown. Read the full project story →
Financing Available for Qualifying Projects
A new HVAC system is a significant investment. Heirloom Mechanical works with Wells Fargo to offer financing options for qualifying residential replacement and installation projects. Ask about financing when you request your estimate.
Learn about financing options →Frequently Asked Questions
Find HVAC Service in Your Community
Explore local heating, cooling, repair, replacement, and maintenance information for the communities we serve.
Ready for a New System?
Request a free estimate and ask about financing options for qualifying projects.