J & J Mechanical Services has been family-owned for over 25 years. The technicians who show up at your door are the same people who answer the phone, sign the invoice, and stand behind every install. No subcontractors, no rotating crews, no surprises.
Our mission is simple: provide honest and reliable service. That means the technician who diagnoses your system is the technician who fixes it, and the owner answers the phone when something needs a second look.
We're here when you need us. Day, night, or the middle of a January ice storm.
We exceed expectations. Every install is leveled, every duct is sealed, every wire labeled.
We stand behind our work. If something isn't right, we come back until it is.
Below are the team members our Nashville customers have called out by name in their reviews. Every one is licensed, insured, and trained to handle residential and commercial systems.
Jason is the technician most often named in customer reviews. He's the one homeowners call when the heat goes out on the coldest night of the year, and the one commercial managers trust with new system installs across the Nashville area.
Jason was in and out of my home in under an hour and had diagnosed and fixed the issue with my furnace. Good, honest work.
Evan handles both residential service calls and the kind of mid-size commercial work that requires careful coordination. Customers consistently mention his communication, calling out when crews are on their way and again when the job is done.
Thanks to Jason, Evan and Major — very friendly, was like I'd known them all my life. You just don't see that kind of customer service hardly anymore.
Major works closely with Jason and Evan on full-system replacements and new installs. The kind of work that needs two technicians who know each other's pace, finish clean, and leave a job site tidier than they found it.
Everyone that I talked to was very helpful and courteous. They notified me that they were on the way and arrived at scheduled time.
Dispatch, scheduling, and the office work that keeps the trucks moving. Family-run for over 25 years.
Every technician on our roster is licensed for the state of Tennessee, bonded against on-site damages, and insured to protect your home and our crew. We've kept those credentials current for the entire 25+ years we've been operating.
See what we handleState of Tennessee HVAC contractor licensing held continuously. Verifiable on request before any work begins.
Surety bond in place so homeowners and commercial property managers are protected if anything ever goes sideways.
General liability coverage on every truck. Your property, your family, and our techs are protected on every job.
First Responders, Military, Police Officers, and Medical Personnel get 10% off — just mention it when you call.
When Jason got the call after the January 2026 ice storm — heat pump frozen solid, fan dead — he came by that same evening, even though his schedule was already covered up. That's not a marketing story. It's a Google review that's still pinned to the top of our profile.
We don't have a fleet of fifty trucks. We don't have a call center in another state. We have a small, careful team that has been answering Nashville's HVAC calls together for over 25 years, and the family that started this business is still the family running it today.
"Jason came by the same evening that I called, even though he was covered up with work that day. The outdoor heat pump had frozen solid and my fan was not working. He kept me from freezing with his prompt arrival, repair, advice and expertise."
"What a great company. Very professional. Great communication. We have heat! Thanks to Jason, Evan and Major. Very friendly, was like I'd known them all my life. You just don't see that kind of customer service hardly anymore."
Schedule a visit, request a quote, or call for 24-hour emergency service. You'll get one of the technicians on this page — not a stranger from a directory.