★ ★ ★ ★ ★
"We replaced a heat pump hvac system, got pricing from 4 hvac contractors. Lots of choices and levels but Hartman was head and shoulders above the others in cost and quality. They have experienced Technicians and great Owners, we highly recommend them!"
— Greg Eley
(Google Review)
★ ★ ★ ★ ★
"Always great service from our technician. He enjoys our dogs and continues to always provide top notch service! So glad we are part of the Hartman family."
— Wendi C.
(Google Review)
★ ★ ★ ★ ★
"We were so impressed with our repairman! He explained everything very thoroughly of what repairs he needed to make to help our furnace to run more efficient. Also, when we called for a repairman, he was at our house within 30 minutes! WOW!"
— Jeffrey M.
(Google Review)
★ ★ ★ ★ ★
"Great Job as always professional, and great customer service"
— Kathy K.
(Google Review)
★ ★ ★ ★ ★
"Caleb was very efficient and helpful to explain all the features on the heating & air system & all the operations."
— Russ W.
(Google Review)
★ ★ ★ ★ ★
"Always great! Friendly. Efficient. Respectful of house. Obviously experienced and good at what he does."
— Dianne M.
(Google Review)
★ ★ ★ ★ ★
"Hartman Bros does a good job They installed my Lenox system and maintain it every year. They have always been responsive and professional. I will use them for my next system."
— Judy Gleason
(Google Review)
★ ★ ★ ★ ★
"Great, fast service as always. Highly recommend Hartman Brothers!"
— Brian B.
(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 