About

Who we are

3rdGen Building Systems is a design-build HVAC firm specializing in full-system installations, upgrades, and high-performance solutions for residential projects.

We work with homeowners, builders, and designers to deliver systems that are not only functional, but engineered for long-term comfort, efficiency, and clean integration into the home.

Our work focuses on projects where thoughtful design and proper execution matter- typically full-system installations and upgrades rather than service or repair work.

What we do

  • Full HVAC System Design & Installation
  • System Replacements & Upgrades
  • Ductless / Mini Split Systems
  • High-Performance Residential HVAC
  • New Construction & Renovation Projects

Leading the way

Our Approach

We approach every project as a system- not just equipment.

From layout and sizing to installation and commissioning, our focus is on delivering HVAC systems that perform reliably over time, integrate cleanly into the home, and meet the expectations of high-end residential projects.

Contact us today to schedule a consultation or learn more about our heat pump and mini split system services. Let us help you create the perfect indoor climate for your home or business.

Residential & Commercial

Factory Trained

Installations

Consulting & System Design

Work with us

Custom HVAC Systems for Residential Projects

3rdGen Building Systems is also known as 3rdGen Heating & Cooling.

Discuss Your Mechanical Scope

Tell us about your project scope, timeline, and location. Our team will review and follow up to discuss next steps.

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3rdGen Building Systems (CA License #1086898)
DBA 3rdGen Heating & Cooling

866-222-7980

team@3rdgen.io

1230 Fourth St, Unit A

Berkeley, CA 94710