★ ★ ★ ★ ★
"All of the Hartman Bros employees are very polite, helpful, efficient and courteous. They always have answers to my questions. Im very happy with Hartman Bros. Caleb did an excellent job, is very polite, efficient and I highly recommend Hartman Bros!!"
— Renee Collins
(Google Review)
★ ★ ★ ★ ★
"Hartman brothers has always given me great service. I feel comfortable knowing they are taking care of my heating and ac needs.
Everyone is responsible, and I am very comfortable with all of the techs taking care of my maintenance even when I'm not home."
— Shelly Kline
(Google Review)
★ ★ ★ ★ ★
"Josh was very courteous and professional. He took the time to explain to me and show me what was going on inside the furnace. I felt really bad that we needed to call him out on a Sunday but with the inside of the furnace iced up our air just wasnt working and he got us up and running in no time"
— Dorothy Poling
(Google Review)
★ ★ ★ ★ ★
"Great work and very reasonable prices! Technicians were very careful and efficient in their work."
— John Edmonds
(Facebook Review)
★ ★ ★ ★ ★
"Fast and efficient service. Josh got right to work and fixed the problem. Called office at 1:20pm and they were right out and the problem fixed by 3:30pm"
— Catherine Franklin
(Google Review)
★ ★ ★ ★ ★
"Thank you for fixing my furnace tonight!! It's cold and will be colder tomorrow night... I knew I made the right decision having you install my furnace and air conditioning. You are awesome!! I love my generator that you installed as well!"
— Cheryl Kensill
(Facebook Review)
★ ★ ★ ★ ★
"Brian was very personable, explained everything he did and even wore booties so my carpet stayed clean! Hartman family & staff have always been wonderful Thank you!"
— Joy Panagiotou
(Google Review)
★ ★ ★ ★ ★
"Hartman Brothers responded within hours of our furnace going out and gave us several options. They are always courteous and knowledgeable. We have done business with them for 20+ years."
— Mindy Meyer
(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.
