Marin City Townhomes HOA — A Community Success Story
The Marin City Townhomes HOA shares what it was like to bring a multi-building community project to life with Simmitri, and the long-term value it created for residents.

Engineered home systems for the modern home. Roofing, solar, HVAC, battery backup, and EV charging — designed to work together.
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Residential Services
A single systems partner for roofing, solar, HVAC, battery backup, and EV charging — designed, sequenced, and supported as one.
Custom systems for homes and commercial properties.
Explore servicePremium replacements, repairs, waterproofing — and the Roof Reimagined design experience.
Explore serviceHeating, cooling, indoor air quality, and heat pumps.
Explore serviceEnergy storage and outage protection.
Explore serviceResidential and fleet charging solutions.
Explore serviceHeat pump and tankless systems.
Explore serviceAudits, insulation, windows, weatherization.
Explore serviceAutomation, monitoring, controls.
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Common Homeowner Problems
Inefficient systems and aging equipment quietly drive monthly costs higher every year.
Hot rooms, cold rooms, drafty corners, and air quality you can feel.
Wildfires, storms, and grid instability leaving your home dark and vulnerable.
Different trades, different recommendations, no one looking at the whole home.
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The E³ Home Process
We assess your roof, electrical, HVAC, insulation, and usage — together, not in isolation.
An integrated, sequenced plan with clear priorities, financing, and incentives.
Premium installation and long-term support so the system performs the way it was designed.
The E³ Experience
Every Simmitri customer moves through the same six-stage journey — led by one Systems Advisor™ from evaluation through EverCare™.
See the full customer journeyOne Client Coordinator™ hears your goals — not a rotating salesperson.
One Systems Advisor™ evaluates the whole property and designs the plan.
The relationship continues with monitoring, maintenance, and future upgrades.
Free Interactive Tool
Enter your unit's serial number and we'll instantly show its age, remaining 10-year parts warranty, and efficiency rating — no signup, no phone tag.
Service Areas
Serving homes across Silicon Valley, the Peninsula, and the Central Coast.
San Mateo County
20Santa Clara County
17Alameda County
04Santa Cruz County
06San Benito County
03Insights
Practical guidance from our engineers on comfort, energy, and infrastructure.

The most expensive kilowatt is the one you waste. Our E3 method explains why.

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Customer Stories
Hear from California families who trust Simmitri as their single home-systems partner.
The Marin City Townhomes HOA shares what it was like to bring a multi-building community project to life with Simmitri, and the long-term value it created for residents.
A California homeowner shares the experience of working with Simmitri end-to-end and what changed for their home and energy bills.
A homeowner describes how Simmitri's design-first approach replaced the chaos of juggling multiple contractors with one coordinated plan.
A long-time Simmitri customer shares why they keep coming back for every energy and roofing project on their home.
A homeowner walks through their full Simmitri experience: clear communication, careful design, and a clean finish.
Why this homeowner stopped shopping for contractors after their first project with Simmitri.
Comfort • Power • Protection. Engineered Home Systems.