★ ★ ★ ★ ★
"Service was on time and the service agent was personable and knowledgeable. I have used this company for over 15 years and would recommend them to everyone."
— Donald Marvar
(Google Review)
★ ★ ★ ★ ★
"Great service ontime for my appt Gentleman was very friendly. He was very informative on what's going on with my unit. And I was happy with my experience with the company"
— Kendra Wetzel
(Google Review)
★ ★ ★ ★ ★
"The technician was very knowledgeable and efficient. This was the most thorough service my furnace has ever had."
— Jim H.
(Google Review)
★ ★ ★ ★ ★
"We cant say enough positive things about this company and those who work there. Dalton was my tech he is very thorough with both my heating and air this year !!"
— Rhonda Ludlow
(Google Review)
★ ★ ★ ★ ★
"Ked was excellent, friendly from the start and extremely helpful. Because of how thorough he was, he fixed the problem but also discovered another potential problem and promptly fixed it as well."
— Casey Holt
(Google Review)
★ ★ ★ ★ ★
"Very nice and efficient would highly recommend to anyone!"
— Vicky S.
(Google Review)
★ ★ ★ ★ ★
"Always a tremendous experience with Hartman Brothers. I have used them for more than 25 years and gotten to know their people more like friends/family than vendors... because that's exactly how they treat their customers! Always a pleasure to deal with and their work is exceptional as a bonus. Would give them 6 Stars if it was an option."
— Scott S.
(Google Review)
★ ★ ★ ★ ★
"A heating unit in my barn had stopped working. This unit was originally installed by Harman Brothers years ago. Josh opened the unit up and within 30 minutes he found the problem and had it repaired."
— Joe P.
(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.
