★ ★ ★ ★ ★
"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)
★ ★ ★ ★ ★
"Technician did an extremely thorough job during our annual HVAC check. He was friendly, efficient, and knowledgeable. Thank you! You just never disappoint"
— Mary E.
(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)
★ ★ ★ ★ ★
"I have used Hartman Bros for many years. They offer excellent service, stand behind their products, give honest advice and are top notch professionals."
— Lisa Johnson
(Google Review)
★ ★ ★ ★ ★
"We've been using Hartman Brothers for many years to service our personal residence and also our church building. They are very friendly, professional, and reliable!"
— Dave W.
(Google Review)
★ ★ ★ ★ ★
"Hartman Brothers are the best people to work with, always dependable! Caleb helped us set up a schedule on our thermostat and helped us hook up our phones to the thermostat also!"
— Jerry J.
(Google Review)
★ ★ ★ ★ ★
"Jim was very professional and nice. He helped explained everything to me with tips for the future. Much appreciated "
— Skott Y.
(Google Review)
★ ★ ★ ★ ★
"Very courteous and professional. They always take great care of us."
— Chip S.
(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.
The average homeowner spends 20 to 30 percent more energy than necessary for cooling and heating bills due to leaky and inefficient ductwork. If you are constructing a new home or 