Lic #1007864 · Santa Clara County · MEP Engineering
HVAC — Commercial & Residential
Rooftop package units, retail preventative maintenance, and Title-24 compliant climate systems.
Luxury remodels and custom ADUs in one of Silicon Valley's wealthiest family communities — where lot values reward estate-level craftsmanship.
JMG services and installs commercial HVAC for retail portfolios — the same rapid-response discipline trusted by national brands like Starbucks — with after-hours crews that never disrupt business hours.
In Los Altos and across Santa Clara County, JMG delivers hvac under California Contractor's License #1007864 — permitted, inspected, and personally overseen by owner Jerry Guinn. For residential clients, we design high-efficiency heat-pump systems, zoning, and smart controls that keep luxury homes silent, comfortable, and energy-compliant.
Los Altos Community Development guides projects through planning and building review with close attention to lot coverage and neighborhood scale. We remodel the city's classic ranch homes, build ADUs that respect its single-story streetscapes, and deliver downtown-adjacent commercial work without disrupting neighboring businesses.
What's included in Los Altos
Recent hvac work
The process in Los Altos
Private Consultation
Walk the property with owner Jerry Guinn. Honest scope, realistic timeline, and a written line-item estimate — free.
Design & 3D Rendering
See the finished project in photorealistic 3D before a single wall comes down. Finishes get locked before demo day.
Permits, Handled
Plans, submittals, corrections, and city or county coordination under CA License #1007864. You sign — we run the process.
Build & Final Inspection
Sixteen in-house trades on one schedule, one accountable owner. Inspection passed, walkthrough done, keys in hand.
HVAC in Los Altos — FAQ
Yes — crane picks are scheduled before opening or on closed days. Most like-for-like rooftop unit swaps are same-day, and the store opens on time.
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HVAC · Los Altos