Holl Sheet Metal Is Now Diamond Heating & Air
If you've trusted Holl Sheet Metal Heating & Air with your home over the years, we have some big news — we've evolved. Holl Sheet Metal is now Diamond Heating & Air.
New name, new look, the same team on your roof and the same standard we've held for more than 30 years.
What's staying exactly the same
- The same team. The technicians and office staff you already know are still here, still taking care of you.
- The same phone number — (209) 722-7463, just like always.
- The same honest service. We still diagnose before we quote, using real testing to find the actual problem instead of guessing.
- The same 30+ years of experience serving Merced, Atwater, and the Central Valley.
What's new
- A new name and look — Diamond Heating & Air, chosen to reflect the precision we bring to every install, repair, and tune-up.
- A refreshed website where you can explore our services, book online, and join the Diamond Club for priority scheduling and members-only pricing.
Why the change?
After building this business over three decades as Holl Sheet Metal, our founders have stepped back — and the crew that earned your trust is carrying it forward under a new name. We came up in sheet metal, fabricating the ductwork most companies only ever connect to, and that precision is exactly what "Diamond" is meant to stand for.
The reputation you helped us build came right along with us. We're proud to have earned 4.9 stars across more than 280 Google reviews — and we intend to keep earning it.
Nothing to do on your end
Your trusted team, your service history, and your comfort are right where you left them. Same great service — brand-new name.
Welcome to Diamond Heating & Air.