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Claim This BusinessCLS Mechanical, Inc. has earned a 4.9-star rating across 61 reviews while serving Mulliken and the surrounding Eaton County community. The family-owned contractor specializes in both heating and cooling systems, with technicians capable of servicing older boiler technology that many modern shops no longer carry. Luke Ejak noted that CLS handled his uncommon heating system during sub-zero temperatures when another contractor claimed parts were unavailable, a testament to the shops resourceful approach to repairs and maintenance.
What sets CLS Mechanical apart is their ability to work on older heating systems that other contractors have moved away from, using universal parts rather than proprietary components. The team, led by Chris, prioritizes getting systems operational quickly even when that means accommodating after-hours calls on a Friday evening. This combination of technical flexibility and responsive scheduling fills a genuine gap for homeowners in rural Michigan who rely on aging but reliable heating equipment.
Luke Ejak experienced two distinctly different repairs with CLS Mechanical. First, when his heat stopped during below-zero January weather, Chris arranged a Monday morning appointment on Friday night and installed a new gas valve using universal parts that another shop could not source. Second, a malfunctioning upstairs actuator required a same-day visit despite the team already being booked with scheduled work, with Eric and Jeremiah completing the 90-minute repair without disrupting their existing commitments. Thomas Skinner similarly praised Eric and Jeremiah for professional maintenance and smart thermostat installation that he can monitor remotely while traveling.
Every reviewer awarded 5 stars, with Chris named in three reviews for his after-hours availability and technical problem-solving, and Eric and Jeremiah highlighted in two reviews for professional thermostat and heating maintenance work. Four reviewers specifically praised the speed of response, noting same-day or next-day service despite the team being busy.
| Sunday | Closed |
| Monday | 7:30 AM–4 PM |
| Tuesday | 7:30 AM–4 PM |
| Wednesday | 7:30 AM–4 PM |
| ThursdayToday | 7:30 AM–4 PM |
| Friday | 7:30 AM–4 PM |
| Saturday | Closed |
Expert repair of older and uncommon boiler systems using universal parts, including gas valve replacement and emergency heating restoration.
Diagnostic and repair services for home furnaces, including quick-response emergency calls and component replacements.
Installation of new smart thermostats and replacement of faulty actuators and motors to restore upstairs heating function.
Repairs and maintenance for residential cooling systems, addressing various issues reported by long-term customers.
Professional preventive maintenance for heating and air conditioning systems by certified technicians including Eric and Jeremiah.