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Expert HVAC Solutions for Your Home
Reliable heating and cooling services at affordable prices.
Explore our HVAC projects and installations
About Cornerstone Mechanical HVAC Services
Our Story
Our Guarantee
Our Services
Tim Annan founded our HVAC company with a simple but powerful vision: to provide dependable, high-quality service while building genuine, lasting relationships within the community he loves. From the beginning, Tim dreamed of creating a company rooted in integrity—one where every client feels heard, respected, and cared for. What started
Tim Annan founded our HVAC company with a simple but powerful vision: to provide dependable, high-quality service while building genuine, lasting relationships within the community he loves. From the beginning, Tim dreamed of creating a company rooted in integrity—one where every client feels heard, respected, and cared for. What started as a passion for honest workmanship has grown into a commitment to serve families with the same dedication he would give his own. Today, that dream continues to guide every service call, every installation, and every interaction, shaping who we are and how we show up for our community.
Our Services
Our Guarantee
Our Services
We offer a full range of HVAC services to keep your home or business comfortable year-round. Our team handles heating and air conditioning maintenance, installation, and repair, as well as professional duct cleaning and indoor air quality solutions. We also design and install HVAC systems for new construction projects and provide annual
We offer a full range of HVAC services to keep your home or business comfortable year-round. Our team handles heating and air conditioning maintenance, installation, and repair, as well as professional duct cleaning and indoor air quality solutions. We also design and install HVAC systems for new construction projects and provide annual maintenance plans to keep your equipment running efficiently and reliably.
Our Guarantee
Our Guarantee
Our Guarantee
We stand behind every job we do with a workmanship guarantee that reflects our commitment to quality and honesty. Each customer matters to us, and we take pride in delivering service you can trust from start to finish. If something isn’t right or you’re not fully satisfied, we promise to make it right—no excuses, no hassle. Your comfort and confidence in our work are always our top priorities
Chester County, PA's HVAC Experts
Our Service Areas
We are headquartered in West Chester, Pennsylvania but proudly serve the following areas:
Downingtown, Exton, Malvern, Phoenixville, Thorndale, Glenmoore, Coatesville, Glen Mills, Kennett Square, Chadds Ford, Chester Springs, Landenberg, Avondale, Oxford, Atglen, Honey Brook, Elverson, Pottstown, Royersford, Collegeville, King of Prussia, Wayne, Newtown Square, Unionville, Pocopson and more!
Contact Us
Drop us a line!
We stay in constant communication with our customers until the job is done. To get a free quote, or if you have questions, just drop us a line.
Hours
Today | Closed |
