★ ★ ★ ★ ★
"Very polite man and got furnace ready for winter"
— Edith V.
(Google Review)
★ ★ ★ ★ ★
"Jim was very efficient did an excellent job was very friendly and polite. Excellent worker. Thank you."
— Roger H.
(Google Review)
★ ★ ★ ★ ★
"A technician came out to perform an annual service call on air conditioning/heat pump. He also made a minor adjustment to thermostat programming . He was prompt and efficient and discussed future maintenance regular service options."
— Judith B.
(Google Review)
★ ★ ★ ★ ★
"We have yearly maintenance on our HVAC system and every single time they come out they are professional, knowledgeable, and friendly. We’ve never had any issues with our system because these guys keep it running perfectly."
— Tia G.
(Google 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 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 K.
(Google Review)
★ ★ ★ ★ ★
"I've used Hartman Brothers for all my HVAC needs across multiple properties and they are always responsive and timely. Dalton was my technician and demonstrated a high degree of both professionalism and helpfulness. Vicky is their jack-of-all trades office and scheduling manager. She always does a phenomenal job and makes you feel valued as a customer in every interaction. You can't go wrong with this company. Strongly recommended!"
— Spencer Lulling
(Google Review)
★ ★ ★ ★ ★
"Caleb did a great job. He is thorough and answered all of my questions."
— Rodney H.
(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.
