3rdGen Heating & Cooling

[ 01 ] Service area · Tri-Valley & San Ramon Valley

Residential HVAC in Tri-Valley & San Ramon Valley

Tri-Valley and San Ramon Valley two-story and larger suburban homes need heat pumps and zoning sized for summer afternoon heat — not builder-grade same-size replacements.

Local context

Homes across Tri-Valley & San Ramon Valley

Newer suburban two-story homes, large tract remodels, and aging builder-grade HVAC ready for full redesign and electrification.

Climate

Regional conditions

Tri-Valley inland summers run hotter than the inner bay. Cooling loads on upper floors and west-facing rooms drive sizing — Manual J matters more here than in coastal SF.

Cities in this region

Process

From first call to startup in Tri-Valley & San Ramon Valley

01

Tell us about your home

Share location, timeline, plans if you have them, and what is not working today — or what your builder has scoped.

02

Size & design the system

We use Manual J, S, and D where the project needs it to match equipment, ducts, and zoning to the actual house.

03

Coordinate & install

Principal-led field work with your GC or architect around access, finishes, sequencing, and clean rough-in.

04

Startup & handoff

System startup, basic orientation, and documentation so you know how the new system is meant to run.

FAQ

Frequently asked in Tri-Valley & San Ramon Valley

Which Tri-Valley cities do you cover?

We serve Dublin, Pleasanton, San Ramon, Danville, Alamo, and Livermore on whole-home HVAC design-build projects.

Are heat pumps enough for Tri-Valley summers?

Yes, when Manual J sizing accounts for inland cooling loads and equipment is selected accordingly — not sized off square footage alone.

Can you electrify an existing gas furnace home?

Whole-home electrification is a core service. We plan heat pump layout, electrical needs, and permits as one design-build scope.

Do you offer emergency AC repair?

No. We are a design-build installation specialist focused on engineered replacements and remodels.

What is a typical project size?

Most whole-home design-build scopes start around $20k because they include engineering, distribution work, and premium equipment.

Contact

Planning an HVAC project in Tri-Valley & San Ramon Valley?

Share your city, timeline, and a short description of the project. If it looks like a fit, a principal will follow up within one business day.

Best-fit residential scopes include heat pump installations, all-electric conversions, full-system HVAC replacements, retrofits, remodels, new construction, ADUs, and Manual J/S/D-supported design-build work. 3rdGen is not structured around emergency repair, routine maintenance, tune-ups, filter changes, or small service calls.