South Carolina’s Oldest Trane Dealer – A Legacy of Comfort Since Day One
Special Offers 
Services 
Reviews 
Review Us An Honest Kind Of Comfort
At J. W. Long Mechanical Company, we’ve been installing, repairing, and maintaining heating and air conditioning systems for Summerville, South Carolina homes and businesses since way back in 1950. From the values established by our founder J.W. Long to our leadership today under owner Shannon Heber, we’ve built our business on integrity, reliability, affordability and quality work. We simply deliver honest, down home services to our customers, making them part of our family.
The J.W. Long team of experienced professionals is always ready to earn your trust with a sincere passion for customer service and the best track record in the area.
We’re a 17-time winner of the Trane Distinguished Dealer Award and an independent Trane Comfort Specialist™ Dealer. That means you can rely on us for the finest heating and cooling products installed and serviced with the technical expertise and attention to excellence that creates peak performance and value for your budget.
Even after all these years, we still strive every day to provide our customers with the same thing we would want: friendly, dependable service at a fair price. Call us at 843-873-0371 and experience the J.W. Long difference.
We call what we offer “An Honest Kind Of Comfort.” We guess you could say it’s also the secret to our success.
Products
As an independent Trane Comfort Specialist™ dealer, we’re skilled in the installation and service of the world’s most efficient, longest-lasting home comfort equipment. Browse our industry-leading product lineup below and call us with any questions.
Our Services
Commercial HVAC Services
At J.W. Long Mechanical, we bring over 70 years of expertise in providing reliable and efficient HVAC solutions for businesses in Summerville and the surrounding areas. As an independent Trane Comfort Specialist Dealer and a 17-time winner of the Trane Distinguished Dealer Award, we are committed to delivering top-tier commercial HVAC services that ensure optimal comfort and energy efficiency for your business.
Preventative Maintenance
Small problems can become bigger problems if you let things go. Before the cooling or heating seasons, it is a good idea to have your system checked out by one of our maintenance experts.
Repairs
When you need A/C or heating repair on your home or business HVAC system, J.W. Long Mechanical’s skilled technicians are the go-to guys for A/C and heating repair in Summerville and beyond.
Commercial HVAC Services
At J.W. Long Mechanical, we bring over 70 years of expertise in providing reliable and efficient HVAC solutions for businesses in Summerville and the surrounding areas. As an independent Trane Comfort Specialist Dealer and a 17-time winner of the Trane Distinguished Dealer Award, we are committed to delivering top-tier commercial HVAC services that ensure optimal comfort and energy efficiency for your business.
Preventative Maintenance
Small problems can become bigger problems if you let things go. Before the cooling or heating seasons, it is a good idea to have your system checked out by one of our maintenance experts.
Repairs
When you need A/C or heating repair on your home or business HVAC system, J.W. Long Mechanical’s skilled technicians are the go-to guys for A/C and heating repair in Summerville and beyond.
hvac services for Patterson Milbourn
★★★★★
Great service and knowledge. Have helped me many times. Quick and efficient.
Both Residential and Commercial heating and cooling for Alouette Alexander
★★★★★
TJ saved the day, can’t thank JW Long enough!
air conditioning repair for Elizabeth Scarberry
★★★★★
He was absolutely amazing he truly made a good connection with us! He made it more personal and less businesslike. He was very very friendly!
ac services for Lisa B
★★★★★
Shout out to TJ for getting us up and running again with working Ac! JW Long is the best!
heating and air conditioning for Chad Henderson
★★★★★
The folks at JW Long do an incredible job! We use them for all of our HVAC needs and would highly recommend them!
hvac services for Anthony Glaser
★★★★★
Very happy with extremely prompt and efficient service, so I have signed up for the maintenance plan.
Both Residential and Commercial heating and cooling for cindy mccoy
★★★★★
My boyfriend, Eddie Phillips and I have been very pleased with the service provided by the employees with JW Long. They respond very quickly to service calls, professional very experienced well trained technicians.
air conditioning repair for Nell Postell
★★★★★
He knows this business glad you sent him to me. Thanks TJ!
ac services for Callie Pope
★★★★★
Called first thing this morning & TJ was here by lunch time! Problem was fixed, system up & running in less than 30 minutes! Highly recommend! TJ was AMAZING!!
heating and air conditioning for Luanne Farish
★★★★★
Great job getting my whole house back to my comfort level. The work crew were very respectful of me and my property.
hvac services for Gilstrap
★★★★★
After experiencing snarky responses from other businesses, working with Hannah was a breath of fresh air—she was friendly, professional, and made scheduling and gathering information effortless. The technician, Justin, was respectful of our property and did an excellent job servicing our unit. I wouldRead More
Both Residential and Commercial heating and cooling for Michael A Brown
★★★★★
Called JW Long and they came out within two hours and assessed my HVAV problem. I needed a new system. My old one, they had made to last 18 years. It took two days for them to have the new system ordered and installed. It was a very reasonable price. I’ve had a great experience with this company.
air conditioning repair for dodofresh aj
★★★★★
Technician was on time and very professional.
ac services for Debbie Call
★★★★★
We have used JW Long for years. They are responsive, reliable, and thorough. The servicemen and the office personnel are friendly and courteous, and their follow through is always prompt and efficient. We highly recommend them for your HVAC services!
heating and air conditioning for Jennifer Zullo
★★★★★
The technician was very thorough.
hvac services for Warren Phillips
★★★★★
Quick response time, wonderful service and excellent follow up across the board.
Both Residential and Commercial heating and cooling for Harold Dusenberry
★★★★★
Great team the job was well planed out .they all worked well together.Fast service in and out in 3 days. Cleaned up left not a trace that they were there .Will gladly use them again.
air conditioning repair for mark nelson
★★★★★
Outstanding service at a fair price. Installation techs, Derek & Tony, were professional, worked efficiently, and paid attention to detail from demolition, installation through final clean-up. Highly recommend if you're looking for best value from legit professionals.
ac services for Shane Dukes
★★★★★
Always great service. We know the repair will be done right!
heating and air conditioning for Tori Gantt
★★★★★
Best service, reasonable priced and fast response time.
hvac services for Daniel Lloyd
★★★★★
Great and Fast service
Couldn’t be happier
Both Residential and Commercial heating and cooling for Jodi Burbage
★★★★★
We've been customers of JW Long for many years. They've always responded quickly to service calls, and are able to resolve issues in a timely manner. Having seasonal maintenances done has definitely made a difference in the lifespan of our system. Thanks, JW Long, for keeping us cool and warm! Yall areRead More
air conditioning repair for Gene Owans
★★★★★
JW Long does a great job every time I need them.
ac services for Steven Morey
★★★★★
I highly recommend them. They have been extremely easy to work with, flexible scheduling, & on time for the appointments.
heating and air conditioning for Rob Davis
★★★★★
I had my homes HVAC unit replaced by JW Long this past summer. They were quick to respond and get me a new unit installed. Would highly recommended them to anyone with HVAC Maintenace or replacement needs.