★ ★ ★ ★ ★
"Caleb serviced our system for the annual spring checkup. He was professional, polite and gave us pointers on the system."
— Diane D.
(Google Review)
★ ★ ★ ★ ★
"Showed up at my door 4 hours after I called about my furnace not working. Very fast response! The tech was very friendly."
— E. Rider
(Google Review)
★ ★ ★ ★ ★
"I have a hot water tank that's 24yr old. Brad came out to diagnose it and flush it out. Great Service! Great office staff. Great experience. I'll be calling them again!"
— Connie G.
(Google Review)
★ ★ ★ ★ ★
"Mario was a friendly, polite technician. He answered my questions to my satisfaction. In my opinion, he fits the profile of all technicians from Hartman’s who we have dealt with— friendly but always professional."
— Sandra H.
(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)
★ ★ ★ ★ ★
"It was good to see Ked again. I have had confidence in him when he did maintenance work on my system in the past and I continue to today. Thanks, Ked!"
— Paul N.
(Google Review)
★ ★ ★ ★ ★
"Josh was very knowledgeable! He was able to find the problem with our furnace and fix it. He was not pushy and didn't try to sell us anything we didn't need! We will definitely do business with Hartman's again when needed!"
— Brian Trumbower
(Google Review)
★ ★ ★ ★ ★
"We've had great experiences with the whole team at Hartman Brothers, all the way from planning for our new HVAC system to having the technicians perform regular maintenance."
— Mike B.
(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.
