★ ★ ★ ★ ★
"Very happy with service. From my original phone call to the technician arriving, all were professional, helpful and friendly. Reasonable prices. I will definitely use again."
— Jackie Franze
(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)
★ ★ ★ ★ ★
"Caleb was very efficient and helpful to explain all the features on the heating & air system & all the operations."
— Russ W.
(Google Review)
★ ★ ★ ★ ★
"Caleb was the technician who came to check out our furnace. He immediately figured out the problem. I highly recommend him"
— Han H.
(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)
★ ★ ★ ★ ★
"Hartman Brothers service technicians are always very prompt, professional and knowledgeable. Excellent products and service."
— Bill F.
(Google Review)
★ ★ ★ ★ ★
"Professional from start to finish. Arrived on time. Installation went smoothly. Faster than expected. Very helpful from the start. Answered all questions. Communication was excellent."
— Michael T.
(Google Review)
★ ★ ★ ★ ★
"Replaced furnace and air conditioner, high quality service, very professional, recommendation 100%"
— Paul G.
(Google Review)
A properly sized cooling and heating system will deliver better energy efficiency and performance than a system that's over- or undersized. An essential aspect of sizing A/Cs, furnaces and heat pumps is calculating the heating and cooling loads (requirements) of the home. Here's a review of the three types of heating and cooling loads for individual homes.
