★ ★ ★ ★ ★
"Tech was polite, professional, knowledgeable and worked quickly to resolve the issue with my furnace. I inquired about the root cause of this recurring problem and he kindly explained what was occurring to prevent the furnace from igniting, and what he had done to resolve the current issue, which I appreciated very much! As always, I remain a happy Hartman Bros. customer!"
— Judith Vincenski
(Google Review)
★ ★ ★ ★ ★
"Caleb serviced our system for the annual spring checkup. He was professional, polite and gave us pointers on the system."
— Diane D.
(Google Review)
★ ★ ★ ★ ★
"Called and they came out same day,…and it was day after Thanksgiving. Service man was very informative and thorough. Definitely recommend Hartman and we plan to use them for maintenance and future furnace or ac needs."
— Traci N.
(Google Review)
★ ★ ★ ★ ★
"Very happy and COOL now. Caleb was super nice and seemed very knowledgeable!!! We still have a problem, but he got us up and running for the weekend after a long week of 90 degrees in our house. Hoping they send Caleb back on Monday to finish the job."
— Deb
(Google Review)
★ ★ ★ ★ ★
"Our Sunday started with the air-conditioner not cooling our home. Monday same thing but not sure if it just couldnt keep up with the high temps. Tuesday decided to call Hartmans heating & Air Conditioning Very. Busy but said they would send a tec out on Thursday. Tec came we talked and he went to work to find the problem, We need a new start up switch , it was installed and after all his checking he gave us a smile and said we are back with the air conditioning working,, We have been with Hartmans for many years and are always so grateful, thankful for their help. Give them a calll."
— Randy L.
(Google Review)
★ ★ ★ ★ ★
"I had an excellent experience with Hartman Brothers from start to finish. After dealing with an incomplete and frustrating repair from Peterman Brothers, Hartman Brothers was a breath of fresh air. Their technician spent several hours thoroughly troubleshooting my tankless water heater, walking through the issues clearly and professionally. There was no upselling, no pressure, and no shortcuts—just honest, methodical work.
Based on their findings, I chose to upgrade to a new tankless water heater, and the decision was entirely mine. At no point did they try to push a sale or steer me toward anything unnecessary. The installation was clean, the communication was excellent, and the entire process felt transparent and trustworthy.
It’s clear why they have such a strong reputation in the Fort Wayne area. Their professionalism, responsiveness, and genuine customer‑first approach really stand out. I’m very happy with the new system and with the service I received.
"
— Cory T.
(Google Review)
★ ★ ★ ★ ★
"The service was great as always. The 2 men who came to install my new furnace were very professional and took the time to explain what they were doing and showed me what the problem was with my old furnace. Thanks Mr Hartman for coming up North and for having a great crew."
— Sandra M.
(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)
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.
