Environmental Systems

3353 De La Cruz Blvd, Santa Clara, CA, 95054

4.4(7 Google reviews)View on Google

RTUChilled Water/ChillerAHUBoilerSplit SystemHeat Pump

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Commercial Capabilities

24/7 AvailabilityNo

Multi-Site CoverageAvailable

Quick Answers

Does Environmental Systems handle commercial HVAC, not just residential systems?

Environmental Systems (ESI) is exclusively a commercial and industrial mechanical contractor, serving office buildings, healthcare facilities, warehouses, retail spaces, educational institutions, and government buildings from its Santa Clara, CA headquarters. Founded in 1975, ESI does not service residential properties and focuses entirely on commercial and industrial HVAC projects of all sizes.

How much does a commercial HVAC unit cost?

Commercial HVAC unit costs vary widely depending on system type, building size, and installation complexity — a rooftop unit for a small retail space carries a very different price tag than a chiller system for a multi-story office building. Environmental Systems provides project-specific quotes for commercial clients across the Santa Clara and greater Bay Area market.

How often should commercial HVAC filters be changed?

Most commercial HVAC filters should be inspected monthly and replaced every one to three months, though the exact interval depends on system type, building use, and occupancy density — a healthcare facility or gym typically demands more frequent changes than a lightly occupied warehouse. Environmental Systems services commercial buildings including healthcare facilities and fitness centers across the Bay Area and can assess the right maintenance schedule during a service visit.

About

Environmental Systems Inc. (ESI) is a full-service commercial and industrial mechanical contractor based in Santa Clara, CA, operating throughout the Bay Area and Sacramento region since 1975. ESI holds both a Mechanical Contractor license and a General Contractor license, allowing the company to self-perform or lead complex commercial projects without subcontracting core scopes. Services span HVAC installation and replacement, piping and plumbing, service and maintenance, environmental chambers, and controls — covering systems from rooftop units and chillers to boilers, air handling units, split systems, and heat pumps. The company operates in the plan-and-spec market as well as design-build and negotiated project delivery, which gives facility managers flexibility in how they engage ESI depending on project stage and budget constraints. ESI has a second office in Sacramento, extending its geographic reach beyond the Bay Area for multi-site portfolio clients. President and CEO Chris Enfantino and CFO Gene Enfantino lead company operations, integrating corporate and construction management. Long-term clients have noted ESI's professional technicians and transparent communication, with one commercial gym operator highlighting ease of communication and service transparency. ESI's 1975 founding and multi-decade client relationships reflect its sustained presence in the Bay Area commercial HVAC market.

Frequently Asked Questions

What types of commercial HVAC systems does Environmental Systems install and service?

ESI installs and services rooftop units, chilled water and chiller systems, air handling units, boiler systems, split systems, and heat pumps. This range covers the mechanical equipment found in most commercial and industrial buildings throughout the Bay Area.

Does Environmental Systems work on both small and large commercial projects?

ESI handles commercial HVAC and mechanical projects of all scales, from smaller retail and gym spaces to large office buildings, healthcare facilities, and government buildings. The company participates in plan-and-spec, design-build, and negotiated project delivery models to accommodate different project structures.

Can Environmental Systems serve clients with multiple locations or properties?

ESI offers multi-site coverage and operates two offices — one in Santa Clara and one in Sacramento — allowing the company to support property managers and facility managers with portfolios spread across Northern California.

What building types does Environmental Systems have experience servicing?

ESI's verified building-type experience includes office buildings, industrial and warehouse facilities, retail spaces, healthcare facilities, educational institutions, and government buildings. This breadth makes ESI relevant to a wide range of commercial property managers in the Bay Area.

Does Environmental Systems offer both construction and ongoing maintenance services?

Yes, ESI provides mechanical contracting for new construction and renovation projects as well as ongoing service and maintenance for installed commercial HVAC systems. Facility managers can engage ESI for a one-time installation project or for recurring preventive maintenance of existing equipment.

Equipment & Systems

System Types Serviced

Rooftop Unit (RTU)Chilled Water / ChillerAir Handling Unit (AHU)BoilerSplit SystemHeat Pump

Building Types Served

Office Building

Industrial / Warehouse

Retail / Shopping Center

Healthcare / Medical

Education / Campus

Government / Municipal

Operating Hours

Monday	8:00 AM – 5:00 PM
Tuesday	8:00 AM – 5:00 PM
Wednesday	8:00 AM – 5:00 PM
ThursdayToday	8:00 AM – 5:00 PM
Friday	8:00 AM – 5:00 PM
Saturday	Closed
Sunday	Closed

License & Insurance

Insurance VerifiedNot verified

Location

3353 De La Cruz Blvd, Santa Clara, CA 95054, USA

Request a Quote

Avg. response in 4 hours

Commercial Capabilities

24/7 AvailabilityNo

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Google Reviews

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3 years ago

ESI is a great company to work with. We have worked with ESI on many projects for the past 15 years. They are very professional, excellent customer service and technicians. It’s always a pleasure to work with ESI crew.

— AM L

11 years ago

We have been using ESI for over 13 years to install and maintain our HVAC system at our small business. If you are smart, care about keeping your HVAC running, and want to be appreciated as a client, do not use this business.

— Focused Trainers

3 years ago

Esi did a great job servicing our building for our Gym space. They were super easy to communicate with. They were really transparent and I would use them again!

— F45 Training Willow Glen East

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