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Guiding Principles. Lasting Relationships.

While technologies change, our guiding principles are the same today as they were a century ago. By focusing on delivering superior service without cutting corners, our reputation for quality work has built a company that lasts. Our approach to doing business is simple: tell the truth; do the job right the first time; ask for business; keep accounting and paperwork easy to understand; and work to build lasting relationships.

Core Values

High Standards




Lasting Relationships

Our History - A Century of Service

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Founder - Stephen Moncrief

Stephen Moncrief starts the company in 1898 during a booming time of Southern reconstruction in Atlanta.


Laurence Kent Sr. Era

Laurence Kent Sr. takes over the company following Mr. Moncrief’s death. His son Lawrence Kent Jr. took over running the business in 1950.


Unique Indoor Comfort Era Begins

Tom Mutz I and Unique Indoor Comfort acquire Moncrief and transform the Atlanta air conditioning market by introducing the high velocity system, a revolutionary central air system for homes without air conditioning.


The Frank Mutz II Era

Moncrief is transitioned to Tom's son, Frank Mutz, who continues the Moncrief legacy to this day — now one of the largest HVAC contractors in Atlanta.


Moving into the Future

Moncrief is proud to have several second-generation employees involved in all segments of our business, including Frank's children Amanda Mutz Wolski, Tom Mutz II and Phil Mutz — 5th generation of their family to work in the industry.

Awards & Certifications

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