[ 01 ] Residential HVAC · Berkeley, CA

Residential HVAC in Berkeley, CA

From Elmwood bungalows to Berkeley Hills custom homes, we plan heat pumps, ductless zones, and filtration without fighting the architecture.

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Project photo

[ img ] Berkeley · residential design-build

2015

In business since

J · S · D

In-house Manual calcs

C-20 · C-36

CA Lic. 1086898

Local context

Heating & cooling designed for Berkeley

Berkeley has a mix of Craftsman homes, older bungalows, hillside homes, duplexes, and additions built over many decades. HVAC work often means solving comfort in homes that were not originally designed for central cooling.

Areas we often work in: North Berkeley · Elmwood · Claremont · Berkeley Hills · West Berkeley · Thousand Oaks

Alameda County · permits pulled as part of full-system design-build scopes

Climate

Hillside exposure & smoke

Berkeley is heavily shaped by Bay breezes, fog, elevation, and hillside exposure. Many homes prioritize heating, quiet operation, air quality, and room-by-room comfort over large traditional AC systems. In the hills, smoke filtration and heat pump performance matter more.

Capabilities

Full-system HVAC for Berkeley homes

Remodels, whole-home replacements, heat pump conversions, and multi-zone comfort — planned with Manual J, S, and D where the project needs it.

Heat pump conversions

Gas-to-electric and high-efficiency heat pump upgrades sized for your home, with distribution and electrical needs planned up front.

Whole-home HVAC replacement

Full-system retrofits when ducts, equipment, zoning, or efficiency need a real redesign — not a same-size swap.

Ductless & multi-zone

Room-by-room comfort with ductless or ducted multi-zone layouts where the home needs flexible zoning.

Zoned comfort & VRF

Multi-zone ducted and ductless layouts, including VRF where larger or multi-level homes need quiet, flexible zoning.

Duct design & Manual D

Manual D–informed duct layouts so rooms get the airflow the load calculation calls for.

Indoor air quality & filtration

Upgraded filtration, sealed returns, and distribution strategies that help during wildfire smoke and allergy seasons.

Process

From first call to startup in Berkeley

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.

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.

Coordinate & install

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

Startup & handoff

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

Why 3rdGen

Built for whole-home projects in Berkeley

Principal-led installs

Field work led by principals who understand the scope before equipment is ordered.

In-house Manual J · S · D

Load, equipment, and duct decisions based on the home — not square-footage rules of thumb.

Licensed design-build

C-20 HVAC and C-36 Plumbing · CA Lic. 1086898 · in business since 2015.

Recent work

Projects in Berkeley

Berkeley, CA · High-End Residential Remodel

Hearst Remodel — Berkeley

GC-led residential remodel in Berkeley with a six-zone Fujitsu ductless heat pump system and two outdoor units, coordinated around an older existing home being prepared for sale.

View project →

FAQ

Frequently asked in Berkeley

Do Berkeley homes need air conditioning?

Some do, especially hillside homes, upper floors, additions, and rooms with big sun exposure. Many others are better served by ductless heat pumps or smaller systems.

What HVAC system works best for older Berkeley homes?

Ductless mini-splits, compact ducted heat pumps, and carefully designed central systems are common options on full-system projects.

Can you add HVAC without ruining the look of an older home?

Usually, yes. Equipment placement, line-set routing, register selection, and duct design can be planned to keep the home’s character intact.

Why does my Berkeley home feel damp or chilly even when the thermostat says it’s warm?

Older homes may have air leakage, limited insulation, single-pane windows, or uneven heat distribution — issues a properly sized system and duct plan address.

Is wildfire smoke filtration important in Berkeley?

Yes, especially in hillside areas and homes with leaky envelopes or older duct systems.

Service area

Residential HVAC nearby

We serve homeowners and residential builders across the East Bay, San Francisco, and Tri-Valley on full-system design-build projects.

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