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Our Story

In 2004, Brian Klein of Sparta, Michigan founded A&B Builders. Mr. Klein had worked in the skilled trades for 20 years when he decided to start and manage his own company. Over the years, the company grew and expanded, acquiring professional trade licenses in Plumbing, Mechanical, and Electrical.


Now known as A&B Mechanical Contractors, Inc, we strive to be a convenient and cost-effective one-stop resource for both residential and commercial mechanical services. Although our name has changed, our family-owned company remains dedicated to serving our customers with a strong work ethic, responsibility, and trustworthiness.

Contact us for HVAC, plumbing, & electrical services. We are also a Generac dealer.

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Our Team
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Meet Our Team

Brian Klein

Brian Klein

DJ Haney


Field Project Manager

Amy Klein

Amy Klein
Vice President

Ryan Bos

Service Manager

Dennis Wilson

Dennis Wilson
Project Manager

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Sales Representative

Abstract Architecture

Client Testimonials

Called about our furnace problems at about 11:00 and was able to come at 12:30 the same day! Very personable and prompt! Very reasonable on pricing too! Was great to have the problem solved quickly! Will be calling them in the future if we need to for sure!

Krista Nelson

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