MCM Mechanical installs, services, and repairs heating and cooling systems for homes across Marin, Sonoma, Napa, and Solano counties — family-run, license #1106825.
Energy-efficient heat pumps heat and cool from the same unit — less equipment, lower bills, and a smaller footprint for your home.
Cut energy costs with a highly efficient heat pump that outperforms conventional furnace-and-AC setups.
Pair with solar power for even greater year-round savings on heating and cooling.
Contribute to a cleaner Sonoma County with an eco-friendly, all-electric comfort solution.
Licensed Warm-Air Heating, Ventilating and Air Conditioning contractor, State of California.
MCM Mechanical is an approved contractor with the Sonoma County Energy Independence Program, helping homeowners finance efficient heating and cooling upgrades.
From a single ductless unit to a full whole-home system, MCM Mechanical handles installation, service, and repair.
Installation, repair, and replacement of ductless mini-split units and heat pump systems.
Attic and whole-house fan installation, plus sub-floor ventilation for healthier, drier homes.
Forced-air furnace and air conditioning installation, repair, and replacement.
Scheduled servicing for HVAC, furnace, and AC systems to catch issues before they become repairs.
General and NFPA inspections to keep your system compliant and running safely.
Proper refrigerant reclaim services, handled to code from start to finish.
With over twenty-five years of experience in installation, servicing, and heating and cooling expertise, Matt Monnich is the right expert for your project.
MCM Mechanical is a family-owned, small business based in Sonoma, California. When he's not on the job, Matt can be found coaching his daughters' sports teams and shuttling them to and from school and sports.
Call or email MCM Mechanical to arrange a free, no-pressure estimate for your home. We reply personally — no call centers.
This privacy notice discloses the privacy practices for mcmmech.com and applies solely to information collected by this website, except where stated otherwise.
We are the sole owners of the information collected on this site. We only collect information you voluntarily give us via email or direct contact. We will not sell or rent this information to anyone, and we use it only to respond to the reason you contacted us.
Sensitive information submitted via the website is encrypted and transmitted securely. Only employees who need it to perform their job are granted access, and it's stored in a secure environment.
We use cookies to improve access to our site and identify repeat visitors. Usage of a cookie is never linked to personally identifiable information on our site.
If you feel we are not abiding by this privacy policy, contact us at (707) 291-5428 or matt@mcmmech.com.