Serving Metro Atlanta Since 1974

United Maintenance, Inc. is an industry leader specializing in high quality HVAC design, installation and service for clients in the commercial, manufacturing, institutional and government sectors. Based in the Atlanta metro area since 1974, UMI has built a loyal client base for our dedication to excellence and trust in providing reliable heating and cooling solutions at reasonable costs. From efficiency improvements to full design and build services to automation, UMI has the proven experience and expertise to get the job done right the first time.


Deep-level analysis of your current HVAC system and energy consumption enables us to pinpoint ways to improve efficiency in designing or upgrading your system.
Through our sister company, United Green Building Services, we can install state-of-the-art controls to help you maximize efficiency while minimizing costs.
We design quality systems tailored to our customers' specific needs, even coming up with creative solutions to problems others can't solve.
Our team of EPA-certified technicians can help bring your HVAC system up to the most stringent environmental standards, whether you're trying to obtain LEED certification or just lower your carbon footprint.
Whether we're retrofitting your current system or designing/building you a new one, our team of experts gets the job done right the first time.
From 24/7 emergency service to customized preventative maintenance plans, our technicians keep your HVAC system running at its best.