★ ★ ★ ★ ★
"The folks that work for Hartman are always the best! Very pleasant, respectful and very knowledgeable! Great experience with whoever comes!!!"
— Mary L
(Google Review)
★ ★ ★ ★ ★
"The friendly service, knowledge and attention to detail is what will keep myself and business calling for all of our HVAC needs."
— Nick G.
(Google Review)
★ ★ ★ ★ ★
"Pay to have furnace and air conditioner inspected each year. The technicians are knowledgeable and thorough with explaining all checked out."
— Dennis L.
(Google Review)
★ ★ ★ ★ ★
"Workers were fast, efficient, and knowledgeable."
— S. Lengerich
(Google Review)
★ ★ ★ ★ ★
"Nothing short of FABULOUS!!! Darian and Brandon provided us with outstanding service. They were diligent, skilled, hard workers and excellent communicators. Friendly and generous with their help, even doing a couple extra jobs to make things easier for us! And they were immaculate with clean up. Highly recommend Hartman! Professionalism and excellence all through this process!"
— Susan Kanpol
(Google Review)
★ ★ ★ ★ ★
"Interviewed three companies for new HVAC install and Rick Hartman as the owner stood out in the interview process. For the installation itself, Darian and partner flawlessly executed the install. Best choice. No misunderstandings. Everything is working perfectly."
— William Rujevcan
(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!"
— Jeffery M.
(Google Review)
★ ★ ★ ★ ★
"Dad called for service and Hartman’s were there just a couple of hours later, found the problem and replaced the part.
I can’t say enough about their exceptional service and techs! We have used them for years and can always count on them to come through."
— Jill C.
(Facebook 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.
