Building Systems Integration
Building Systems Integration
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  • Multifamily HVAC
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    • Market Rate Projects
    • Tax Credit Projects
  • Careers
  • Contact Us
  • FAQ
  • Field System Startup

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Building Systems Integration

Our Services

Building Systems Integration (BSI) is a Phoenix based HVAC contractor specializing in multifamily new construction projects, with additional experience in select commercial and residential construction applications. We support new construction, renovations, and additions with a focus on repeatable execution, schedule reliability, and consistent installation quality.

Our Expertise

Execution & Coordination

Execution & Coordination

Our team brings extensive experience across a wide range of HVAC systems and project types, allowing us to deliver dependable results on complex, multi unit developments. From pre-bid estimating through final inspection, we follow a structured, disciplined process on every project to ensure clarity, coordination, and predictable outcomes.

Execution & Coordination

Execution & Coordination

Execution & Coordination

BSI collaborates with general contractors through web based project management platforms to maintain real time communication, accurate documentation, and on time project delivery. Our internal systems connect field and office teams to address field conditions and material needs efficiently.

Custom Sheet Metal

Execution & Coordination

Custom Sheet Metal

In addition, BSI operates an in house sheet metal fabrication shop supporting our construction operations and partners. We produce plenums, ductwork, drain pans, fittings and custom fabricated components both functional and architectural tailored to project specific requirements.

BSI Project Photos

Exhaust Fan on Apartment Rooftop

    BSI Project Videos

    Watch this short video to see what a typical crane day looks like for the team in the field as they load rooftops with condensers.

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