About

Josh Killen is a highly professional and reliable HVAC expert known for his fairness, honesty, and commitment to delivering quality work. He maintains excellent communication, ensuring availability to address any questions or concerns, making him a trusted partner for ongoing projects.

Reviews & Endorsements

Experience

Marla Brown

10/30/2026
10

"Hands down the best HVAC business around! In 2019, I was referred to Killen Mechanical by a friend who raved about their service. Josh, the owner, helped me swap out an old, inefficient 5 ton gas furnace/AC for an all electric Fujitsu multi zone system (3 ton downstairs, 1 ton upstairs). There was zero sales pressure, and running the multi-zone setup has saved me a ton of money on energy bills, esp on days when the upstairs gets so hot but the downstairs stays cool! Because of their elite contractor status, I even got an unheard of 12 year warranty! It is so refreshing to work with a genuine local business that's passionate about what they do instead of a massive corporate company. Josh and his team offer fair rates, top tier work, and stay super responsive long after the installation is complete. Customer for life!"

Gernot Sehmsdorf

10/26/2026
10

"As a General Contractor and Facility Manager I have hired Josh Killen many times to address HVAC challenges . I have always been pleased with his response and performance ."

Kathy Burke

10/25/2026
10

"Josh is an excellent hvac contractor. I would recommend him highly. Dependable, knowledgeable and trustworthy. Simply top notch!"

Brian Jensen

10/25/2026
Provided a score of  
10
  for Josh Killen

Michael Cherry

10/25/2026
10

"Josh is very profesional and knowledgeable! I have used him on many jobs over the years. And he has done a great job every time!"

Lori Tsujimoto

10/24/2026
10

"If I could give more than five stars I would. Killen Mechanical is fantastic!
This is the second time we have used them and both times we couldn’t be more pleased. The first time 10 years ago they installed an HVAC system and did some new ductwork in our Bay Area home. This time they installed two whole house fans and three HVAC systems for our home in El Dorado Hills.
Josh and his team go above and beyond to accommodate and satisfy their customers. They are all extremely knowledgeable in their craft along with being courteous and respectful of your home. Josh takes pride in his work and is a man of extreme integrity and honesty, which is hard to come by these days. He is very communicative- responding to calls, emails and texts in a timely manner. Josh & his crew show up on time and work hard until the job is done. Killen Mechanical is very fair priced and I would not hesitate to highly recommend them."

L Padgett

10/24/2026
Provided a score of  
10
  for Josh Killen

Rick Johnson

10/14/2026
10

"Josh is top notch...a true professional. Fair, honest, professional, and delivers quality work."

Nick Lagorio

10/14/2026
10

"Josh was extremely professional, fairly priced, and has always been available when I have questions or concerns. I will use him for all my HVAC projects moving forward."