Chillers & Process Cooling
- Glycol Chillers & Chilled Water
- Pumps & Process Piping
- New System Installation
- Existing-System Upgrades
Chillers, Process Refrigeration and Boilers, installed and serviced. Commercial HVAC repairs and maintenance. Sonoma and Napa counties.

“They know the industry, understand the urgency when something goes wrong, and are always willing to help find a solution. I would highly recommend Lewis Mechanical to any winery or business looking for a dependable and knowledgeable team!”Amanda · Google review
“Lewis Mechanical sets the standard for all heating and cooling needs. Their techs are very experienced, efficient and thorough. Communication is great, Lewis is a 5 star operation!”Jeffrey · Google review
“A huge thank you for getting the chiller running today!!! You really saved the day.”
“Please let Joe know that his reports are awesome, it really helps me understand what I am dealing with and makes decision making simpler.”
“Sam has been a great person to work with. He brings an incredible level of “pipefitter” craftsmanship and eye for perfection. Thank you for sharing him with us.”
“Delia, you were my all time favorite person to call, and thanks for the good wishes.
Thank you for being so helpful as you made my job easier.
I’m sure this won’t be the last time you hear from me.”
“Joe showed up early, methodically evaluated the situation, talked me down (client management), focused his attention, and proceeded step-by-step. At each step, he clearly explained to me what was known and what was unknown, where there was uncertainty, and what the options were. He did absolutely everything that he could, based on what equipment he had on his truck, right down to the last, the ultimate, the fuse.
And it worked.
Joe could be an ER doc, but I am so glad that he does refrigeration for Lewis.”
We work on Rooftop Units, Split Systems, Ductless, VRF, Make-Up Air and Exhaust equipment in offices, restaurants, retail, warehouses, production buildings and winery tasting rooms.



Chillers, Chiller / Heaters, Unit Coolers and Boiler packages, delivered and commissioned.
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Our in-house team designs, builds and programs Control Systems for your equipment.
Remote browser access
Historical trends & reporting
Email alarm notifications

HR & Accounts

President

Service Coordinator / Office Manager

Estimator / Project Manager / Vice President

Purchasing Agent
Lewis Mechanical Services, Inc. is based in Santa Rosa and has served businesses across Sonoma and Napa counties since 2001.
We’ll follow up to confirm the details and schedule a visit.
Equipment down or production affected?
After-hours service is for Maintenance & Service Agreement customers. Online requests are reviewed during office hours.
(707) 544-1277