About McGrath Mechanical
Built on honest work
and straight answers.
McGrath Mechanical, LLC is based in Stockbridge, Georgia. Every job is diagnosed honestly, done right, and backed by the company — across metro Atlanta and the I-75 south corridor.
The company
Quality work. Real accountability.
McGrath Mechanical, LLC is a Georgia company based in Stockbridge, serving homes and businesses across metro Atlanta and down through Macon. Every job gets the same standard: honest diagnosis, quality work, and a company that stands behind it.
James McGrath founded McGrath Mechanical to do HVAC work the right way — show up when we say we will, diagnose the real problem, and fix it instead of selling around it. That standard hasn’t changed as the company has grown, and it won’t as it keeps growing.
We handle three kinds of work: heating and cooling for homes, HVAC for commercial buildings — offices, retail, rental portfolios — and air duct cleaning and indoor air quality, the business we also run as IndoorAirDr. Whatever the job, you get the same diagnosis-first approach and the same people standing behind it.
Customers don’t only call us for routine repairs. When another HVAC company says a system is beyond fixing, that’s often exactly when we get the call — and more often than you’d think, there’s still a real fix on the table.
From the field
Work on actual jobs.
These photos are from McGrath Mechanical jobs, not stock and not AI.
4.9
Google rating
Across 18 reviews
18
Google reviews
Every one rated 4★ or higher
16
Five-star reviews
Out of 18 total
I-75
Atlanta → Macon
Metro Atlanta & the south corridor
Reviews
What our customers say.
McGrath Mechanical is my go to choice for HVAC repairs and installation. As a property manager of properties all over the Atlanta area, I need a reliable HVAC source that will show up, diagnose the problem correctly, tell me the truth and make the repair at a reasonable cost. McGrath does exactly that! New system installations are efficient and affordable as well. I highly recommend James at McGrath Mechanical!
If he says he will be there then he will. James is fast, reliable, and gets the job done. I thought I needed a new unit but that wasn’t the problem. After about 30 minutes he had us up and running again. Any questions I had he was able to give me an answer. Highly recommend
I’ve been using James for 20+yrs they have always fit me in there schedule never waited 3or 4 days really knowledgeable friendly service is great very well priced explains what’s going on shows you the parts he replaced makes you feel like they really care about your business 5 stars all the way