A Bellevue family business, since 1997
Two generations of the Northcutt family, one shop on Cub Creek Road, and nearly thirty years of keeping Middle Tennessee homes comfortable.
It started with a sixteen-year-old who liked solving problems
Michael Northcutt got into HVAC at sixteen and found the thing he was good at: figuring out why a system was not working and making it right. In 1997 he started Qualified Service and Installation on his own, and for the first stretch he was every department — answering the phone, driving to the jobs, doing the books after the trucks were parked.
Word of mouth did the marketing. A house on one street led to three more, and nearly three decades on, the company still holds an A+ rating from the Better Business Bureau. In this trade a reputation is built one neighbour at a time.
Ryan grew up in it. He was riding along at about thirteen, helping where a kid could help, and joined for good at nineteen. Now he leads the energy-efficiency side of the business — the insulation and encapsulation work added in 2024 — while carrying the same values his dad ran on from day one.
The hardest part of growing, Ryan will tell you, is not finding work. It is finding technicians who share those values in a market where every contractor in Middle Tennessee is hiring. So the company grows carefully, and the people who make it in stay.
- Serving since 1997
- Nearly three decades serving Middle Tennessee
- Two generations
- Family owned and operated
- Open seven days
- Extended weekday and weekend availability
- Whole-system expertise
- HVAC, ductwork, insulation and crawlspace conditions evaluated together
How we got here
Slow, steady, and built on repeat customers rather than a marketing budget.
- 1997
Michael starts the company
After finding his calling in HVAC at sixteen, Michael Northcutt founds Qualified Service and Installation. For years he is the whole operation — the calls, the jobs, the paperwork at night.
- 2000s
A reputation in Bellevue
The business grows almost entirely by word of mouth across Bellevue and West Nashville. The Better Business Bureau opens a file in 2006.
- 2010s
Ryan joins full time
Having ridden along with his dad since about thirteen, Ryan Northcutt comes on for good at nineteen — the second generation, learning the trade the same hands-on way.
- 2024
Into the building envelope
The company adds spray foam insulation and crawlspace encapsulation, so the crew that sizes your system can also fix the leaky, damp envelope making it work overtime.
- Today
29+ years, still family run
HVAC, electrical, insulation, encapsulation, gas lines and ductwork across Middle Tennessee — still family run, and still rated A+ by the Better Business Bureau.
Two generations, one standard
- MN
Michael Northcutt
Founder & Owner
Michael found his calling in HVAC at 16 and founded Qualified Service and Installation in 1997. For years he ran every part of it himself — answering the phone, working the jobs, keeping the books. That hands-on standard is still the one every job is measured against.
- RN
Ryan Northcutt
Second Generation
Ryan started riding along with his dad around 13 and joined the business for good at 19. He leads the company's newer energy-efficiency work — spray foam insulation and crawlspace encapsulation — and carries forward the same values he was raised on.
Integrity over the invoice
If a repair beats a replacement, we say so. Nobody here works on commission-driven upsells, and it shows in how many customers we have kept for twenty years.
Treated like family
That is not a slogan on a truck — it is the standard Michael set when the customers were his actual neighbors, and it still governs how a crew behaves in your house.
Quality that holds up
Right-sized equipment, sealed duct, proper gas piping, work done to code. Doing it correctly the first time is cheaper for everyone involved.
What our customers actually say
We would rather point you at the record than tell you about it. Here is a customer in their own words, and the facts you can go verify yourself.
Michael and his crew were polite, professional and good at their jobs. They were willing to go the extra mile on a very odd, difficult install.
- Better Business BureauA+ ratingRated A+ by the BBB. See the profile for the current listing.
- In business since199729 years serving Middle Tennessee, continuously and under the same family.
- OwnershipFamily runFounded and still run by the Northcutt family, now in its second generation.
- Availability7 days a weekMon–Sat 7:00 AM – 7:00 PM, Sunday 7:00 AM – 5:00 PM.
Work with a family, not a call center
Same shop, same family, same standard since 1997. Call us and talk to someone who will actually be involved in your job.
Project estimates are free. Diagnostic service calls carry a fee that we disclose before booking.
- Open 7 days a week
- Family owned since 1997
- Whole-system expertise