★ ★ ★ ★ ★
"These people are Amazing I have never had any trouble at all. They are always there if you need them, anyone that comes is always respectable and caring about you. A great group of staff That's for sure I'm so happy we went with them for our needs."
— MaryJane L.
(Google Review)
★ ★ ★ ★ ★
"Thank you so much for helping me out today! Called yesterday and I was the very first stop of the day. Super quick and easy!
"
— Christian S.
(Google Review)
★ ★ ★ ★ ★
"I appreciate my technician Dalton. He is very thorough and takes really good care of my HVAC. He is also very patient and kind. Thank you Dalton!"
— Patty Barnes
(Google Review)
★ ★ ★ ★ ★
"Caleb was very courteous and thorough on his routine check-up of our heating system. Thank you."
— Ron N.
(Google Review)
★ ★ ★ ★ ★
"Josh was very knowledgeable! He was able to find the problem with our furnace and fix it. He was not pushy and didn't try to sell us anything we didn't need! We will definitely do business with Hartman's again when needed!"
— Brian Trumbower
(Google Review)
★ ★ ★ ★ ★
"Very satisfied with service arrival time and communication. I would recommend."
— Henry G.
(Google Review)
★ ★ ★ ★ ★
"The service was great as always. The 2 men who came to install my new furnace were very professional and took the time to explain what they were doing and showed me what the problem was with my old furnace. Thanks Mr Hartman for coming up North and for having a great crew."
— Sandra M.
(Google Review)
★ ★ ★ ★ ★
"Excellent job!! He explained everything."
— Terry F.
(Google Review)
Today's ductwork design principles correct thermal losses, pressure imbalances and other errors that waste energy. In the past, design and fabrication of ducts were done with the aim of minimizing costs. If you're looking to improve your home's efficiency and comfort, you should be aware of the principles of modern ductwork design below.
The average homeowner spends 20 to 30 percent more energy than necessary for cooling and heating bills due to leaky and inefficient ductwork. If you are constructing a new home or 