Residential HVAC · Berkeley, CA
Whole-home heat pumps, HVAC replacements, remodels, additions, and new construction — designed around the house, coordinated through installation, and commissioned by one Berkeley-based team.
Project Inquiry
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Project fit
This page is for substantial residential work: replacements, electrification, construction, and HVAC scopes that need more than a quick equipment swap.
Complete upgrade
For aging furnace and AC systems or a complete heating-and-cooling replacement.
Full-system replacementCentral
Central heating and cooling designed around the home and the condition of its existing ducts.
Heat-pump installationFlexible zoning
For homes where architecture, additions, zoning, or existing conditions favor a mixed approach.
Ductless and multi-zoneGas to electric
Electrification planned with the ducts, electrical service, controls, and equipment—not just the furnace.
Electrification planningCoordinated
HVAC coordinated with the architect, GC, framing, finishes, and construction schedule.
HVAC for remodelsFrom the plans
Residential mechanical design and installation brought in early enough to fit the building.
New construction HVACReal Berkeley projects
Berkeley, CA · High-end residential remodel
GC-led residential remodel with a six-zone Fujitsu ductless heat pump system and two outdoor units, coordinated around an older existing home being prepared for sale.
The six-zone Fujitsu ductless system was installed, permitted, inspected, and completed in June 2023 as part of the home’s remodel-for-sale scope — delivering zoned heating and cooling without a conventional ducted retrofit.
Older Berkeley homes
A furnace-to-heat-pump conversion is rarely just an equipment swap. Existing ducts, additions, finished interiors, electrical capacity, available mechanical space, and the floor plan all shape what will work.
If a condition rules out the obvious approach, you hear it during design, not on install day.
Sized for high supply temperatures and an oversized furnace. We measure before assuming they can carry a heat pump.
Load calculation first. Circuit rearrangement, load management, or an upgrade priced in the original scope.
Ductless or a hybrid layout, with head placement and line-set routing reviewed with you before install.
Usually a distribution problem, not a capacity problem. Fixing it is part of the design, not an upsell later.
Homeowner reviews
207 Google reviews
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Mitsubishi mini-split installed with outstanding care. Indoor and outdoor units done right. High efficiency meant a meaningful federal tax credit too.
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Devin and his crew did a fantastic job installing AC for our whole house. High quality Mitsubishi equipment and a clean installation throughout.
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Devin is meticulous, methodical, and knowledgeable. Professional crew and a heat pump install we trust completely.
Photos from the installs above
Read all 207 reviewsHow we work
Designed before it is installed means the important decisions are made around your actual home—not copied from the equipment that came out.
We start with the house, the rooms, the current system, and what you are trying to change.
Loads, equipment, ducts, electrical capacity, access, and architectural constraints are checked up front.
We calculate what the home needs and plan distribution, zoning, and equipment locations.
Equipment is matched to the design instead of automatically repeating the old nominal size.
Permits, electrical needs, construction conditions, and other trades are addressed before installation.
The planned equipment, ducts, controls, and related mechanical work are installed as one coordinated job.
We verify operation and airflow, document startup, and show you how the finished system is meant to run.
Complete project delivery
A Berkeley electrification project can touch the furnace, ducts, electrical service, controls, equipment locations, permits, and finished interiors. We plan those connections as one scope.
The result is a complete system designed for the home, installed to the plan, and tested before handoff.
Tell us about the projectRemoval and replacement planned around the complete conversion.
Reused, modified, or replaced according to what the design requires.
Capacity, circuits, documentation, inspections, and other trades coordinated with the HVAC scope.
Operation and airflow checked before the project is handed back to you.
Cost
Based on recent 3rdGen projects, most residential heat pump installations fall within the ranges below. Final pricing is determined after we evaluate the building, calculate the load and confirm the ductwork, electrical and equipment requirements.
Complex whole-home and design-build projects can exceed these ranges. Rebates and incentives may reduce your net project cost.
Project inquiry
Share your ZIP, the house, and your timeline. A project lead reviews it and follows up — no call center, no dispatcher.
Project Inquiry
Thanks — your project details are on their way to 3rdGen. We’ll review them and follow up about the next step.
Project teams
3rdGen works as the mechanical partner within residential project teams—from early design through installation, startup, and commissioning.
We regularly work within existing project teams and can coordinate the mechanical scope with the architectural, electrical, structural, and construction requirements of the project — or work directly with the homeowner when that is the right path.
Mechanical systems coordinated around architecture, ceiling conditions, equipment locations, routing, and finish requirements.
Explore HVAC for architectsClear scope, scheduling, rough-in coordination, submittals, inspections, startup, and project handoff.
Explore HVAC for builders & GCsField execution, equipment selection, controls coordination, submittals, installation, and commissioning aligned with the mechanical design.
Explore engineering coordinationAlready assembling your own project team? We can take ownership of the mechanical scope and coordinate directly with the other professionals involved.
Start a residential projectMitsubishi Electric
As a Mitsubishi Electric Diamond Contractor, we design and install ducted, ductless, and multi-zone systems for Bay Area homes, with factory-trained crews and longer warranty options on qualifying residential installs.
Mitsubishi is not automatically the answer to every home. We start with what the project requires and recommend the system that makes sense.
12 Year Parts &
Compressor Warranty
Extended parts & compressor coverage on qualifying Diamond installations.
Ongoing manufacturer training on the latest hyper-heat systems.
Direct factory escalation if anything ever needs attention.
FAQ
Straight answers on heat pumps, older homes, ADUs, permits, and working with architects in Berkeley.
Recent 3rdGen projects range from roughly $20,000 for a ducted system using suitable existing ducts to $40,000–$80,000 or more for complex whole-home, mixed-system, or design-build scopes. Ductwork, zoning, electrical work, access, equipment, permits, and construction coordination all affect the final price.
Yes. Older Craftsman homes, bungalows, and hillside properties are common heat pump candidates when sizing, equipment placement, and distribution are planned around the actual structure — ductless, compact ducted, or mixed approaches depending on the home.
Sometimes. If ducts are leaky, undersized, poorly balanced, or never designed for the new loads, addressing them during replacement often solves comfort problems that equipment alone cannot fix. We evaluate ducts as part of full-system design.
Yes. A properly designed heat pump can replace a gas furnace and provide both heating and cooling. We confirm the home load, distribution, electrical capacity, and equipment application before recommending the conversion.
Yes. Many Berkeley scopes are architect- or GC-led. We coordinate mechanical design, rough-in, equipment placement, and sequencing with the existing project team — or work directly with homeowners when that is the path.
Permit and inspection coordination are part of design-build scopes. Local familiarity helps us plan documentation and field sequencing — without implying special treatment or guaranteed approvals.
Not every project does. We review service and panel capacity during planning so any circuit work, load management, or panel upgrade is identified as part of the scope rather than discovered on installation day.
Yes. 3RDGEN is a Mitsubishi Electric Diamond Contractor and installs ducted, ductless, multi-zone, and mixed-system applications. We still start with the home and project requirements rather than assuming one manufacturer is right for every job.
Timing depends on design, equipment, permits, electrical work, access, and whether the HVAC scope is tied to a remodel or addition. We establish the expected sequence after reviewing the project rather than promising a generic installation window.
We can identify programs that may apply and provide project documentation where required. Eligibility and funding change, so we confirm current program requirements for the proposed system and do not guarantee a specific incentive amount.
Project Inquiry
Thanks — your project details are on their way to 3rdGen. We’ll review them and follow up about the next step.
