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What is A/C Tonnage?The relationship between a system’s A/C tonnage and the size and characteristics of the home it’s in makes a difference in its performance. Each ton of an air conditioner can remove 12,000 Btus of heat from your home in one hour. When you’re selecting a new cooling system, whether it’s central or portable, finding the right size is crucial for your comfort, energy costs and the lifespan of the equipment.

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HVAC system , A/C tonnage , hvac sizing

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"They worked me in early. Inspected and found the problem quickly. Explain the issues thoroughly and did not attempt to see me parts and services I did not need. They got the heat going temporarily and hope to have needed parts in a couple days."

— Todd Hammond
(Google Review)

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"Same good service over several years. Because Hartman's takes care of my furnace every year, there were no problems."

— James C.
(Google Review)

★ ★ ★ ★ ★

"Brian is an asset. He knows his stuff and is very personable. As a 12-year annual service customer The visit involved testing and advice and a small amount of refrigerant. The visit last about an hour."

— Tom Jurczak
(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)

★ ★ ★ ★ ★

"Caleb was very courteous and professional! The routine maintenance for the furnace went very smoothly as did the one in spring for the A/C."

— Jerry R.
(Google Review)

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"Our Tech was amazing to work with, he was very patient and answered every single question that we had didn’t rush us at all. We had Hartman at our previous home, continued the service at our new home. Would highly recommend them to anyone!"

— Jerry C.
(Google Review)

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"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)

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"Fast and efficient service. Josh got right to work and fixed the problem. Called office at 1:20pm and they were right out and the problem fixed by 3:30pm"

— Catherine Franklin
(Google Review)

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