Heat Pump Water Heater Services in San Francisco, Palo Alto & San Mateo
JK Plumbing installs, converts, replaces, and repairs heat pump water heaters across San Francisco, Palo Alto, San Mateo, and the SF Peninsula — for homeowners replacing a failing gas water heater, getting ahead of the 2027 Bay Area gas tank ban, electrifying as part of a remodel, or replacing a first-generation hybrid that's run its course. Permitted installs, BayREN rebate handled on your behalf, and honest sizing so the unit actually keeps up with showers and laundry. Licensed master plumbers since 2007. Free in-home estimate. CA License #1080266.
By Alik, Owner & Master Plumber · Last updated June 2026
Rated 5 stars on Google · 19+ Years in Business
A licensed plumber answers, not a call center.
Signs You Need a Heat Pump Water Heater (Not Just Another Gas Tank)
A standard gas tank water heater is the cheapest unit to install today, and the most expensive one to own over the next ten years — especially as PG&E rates climb and the 2027 BAAQMD gas tank ban approaches. A heat pump water heater (sometimes called a hybrid water heater, or a “water heater with pump”) runs at 3× the efficiency of an electric resistance heater and roughly half the operating cost of gas in most Peninsula homes. Look for these patterns:
- Your gas water heater is 8+ years old and starting to act up. The average tank lasts 10–12 years. If you’re seeing rust at the bottom, the pilot keeps going out, or the recovery time has gotten slow, you have 12–24 months to plan a replacement on your terms instead of waking up to a flooded garage.
- You’re in Alameda County and your gas tank is on borrowed time. Starting January 1, 2027, the Bay Area Air Quality Management District (BAAQMD) Rule 9-6 prohibits new natural-gas storage water heater installations in Alameda County. Replacing now lets you plan the electrical and rebate paperwork instead of getting forced into emergency replacement after the deadline.
- Your PG&E bill keeps climbing and the gas water heater is the biggest single load. A typical Bay Area household spends $400–$700 a year heating water on gas. A properly sized heat pump water heater typically cuts that by 50–70%, often more in homes with solar.
- The hot water for shower runs out faster than it used to. A scaled-up tank, a worn dip tube, or a failing heating element all show up as “we ran out of hot water mid-shower.” Sometimes it’s a repair. Sometimes it’s the unit telling you it’s the end of the road.
- You’re remodeling, adding an ADU, or doing solar. If the walls are already open, the electrical service is being touched, or you’re adding panels, this is the cheapest moment in the next decade to add the 240V circuit and condensate drain a heat pump water heater needs.
- You bought the house with an old electric tank and the bills are brutal. Standard electric resistance water heaters cost roughly 3× more to run than a heat pump unit doing the same job. Swapping a straight electric water heater for a heat pump model is often the single highest-ROI plumbing upgrade in the house.
- The current unit is in a tight closet and the room is hot in summer. Some homes already have an HPWH installed in too small a space; it runs in resistance-only mode (defeating the point) or trips the compressor. A correct install — or a relocation — fixes both.
If you’re seeing one of these, call (415) 359-4588. We’ll ask about your current setup, electrical panel, and where the unit lives — and tell you honestly whether a heat pump water heater is the right move, whether a straight repair will buy you a couple more years, or whether your panel needs work before any electric water heater conversion is realistic
Our Heat Pump Water Heater Services
Six ways we handle heat pump water heater work, each for a different situation. Click any service below for full details.
Heat Pump Water Heater Installation
For homes adding a heat pump water heater for the first time — either replacing a tank that's reached end-of-life or a planned electrification swap. We size the unit to your actual household demand (showers, laundry, dishwasher load), confirm the install location has enough air volume for the heat pump to breathe, run the 240V circuit, set the condensate drain, and pull all required permits.
Gas to Heat Pump Water Heater Conversion
The biggest job in the lineup, and the one most Peninsula homeowners are looking at right now. We pull the old gas tank, decommission the gas line back to a code-compliant cap, run a new 240V circuit from the panel (or coordinate a panel upgrade if needed), set the condensate drain to gravity or a condensate pump, and install the new heat pump water heater. We handle BayREN and CCA rebate applications on your behalf.
Heat Pump Water Heater Replacement
For homes already on an HPWH where the existing unit has aged out — typically 10–15 years for first-generation hybrids. Like-for-like swaps are the cleanest job we do: electrical and condensate are already in place, so we pull the old tank, set the new one, retie the lines, and inspect. Usually a one-day install.
Heat Pump Water Heater Repair & Troubleshooting
For units that have stopped heating, switched to resistance-only mode (the tipoff is a sudden jump in the electric bill), throwing error codes, or making more noise than they should. We diagnose the compressor, evaporator coil, control board, condensate system, and electrical supply, and quote the repair against the cost of replacement before we recommend either.
240V Electrical & Condensate Drain Setup
The two things that derail more heat pump water heater installs than anything else. Most Bay Area homes with a gas tank in the garage don't have a 240V circuit nearby, and the spot where the old tank sat has no floor drain for condensate. We run the new circuit from the panel, install a properly-sized breaker, and set the condensate drain — gravity if the layout permits, a small condensate pump if not.
Sizing & Electrification Consultation
For homeowners planning ahead — a remodel next year, a panel upgrade, solar, or an ADU — who want to know what's involved before they're under deadline pressure. We come out, look at the panel capacity, the install location, the household hot water load, and walk you through whether your home is ready for a heat pump water heater today or needs a step before it's realistic. No charge, no pressure.
How a Heat Pump Water Heater Call Works
You call, a real plumber answers
Call (415) 359-4588. A licensed plumber asks what you have now (gas, electric, tankless), how old it is, where it lives, and what your panel and breaker situation looks like. From that, we can usually tell you over the phone whether you’re looking at a simple replacement, a full gas-to-electric conversion, or a job that needs a panel upgrade first
Free in-home assessment, written quote
We come out at no charge, check the existing unit, the panel capacity and available breaker slots, the install location’s air volume (HPWHs need roughly 700–1,000 cubic feet of space to run efficiently), the condensate drain path, and any code issues with the existing install. You get a written quote covering the unit, electrical, condensate setup, permits, and any panel work — itemized — before the job is scheduled. We pull the permits ourselves and submit the BayREN rebate application on your behalf.
Install day, inspection, walk-through
Most heat pump water heater installs run one day for a like-for-like replacement, one to two days for a gas-to-electric conversion with an accessible panel, and two to three days when a panel upgrade or extensive electrical work is involved. We protect the floors and surrounding area, pull the old unit, run the new circuit and condensate line, set the new tank, test under load, schedule the inspector, and walk you through how the unit operates — including heat pump vs. hybrid modes — before we leave.
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How Our Heat Pump Water Heater Pricing Works
Heat pump water heater cost varies more than a standard gas tank because every job involves the unit, the electrical, and the condensate path — and Bay Area homes vary wildly in what’s already in place. Quoting a flat number sight-unseen is how homeowners end up with mid-job surprise charges, which is exactly what we don’t do. Here’s the actual price structure.
Phone qualification first. We ask the current unit type, age, location, and what you know about the electrical panel. From that, a licensed plumber can usually quote a working range over the phone.
Free in-home estimate before any work. We come out, check the panel, the install location, and the condensate route, and write the quote down. No charge for the visit, no obligation.
Five things drive the price on any heat pump water heater job:
- Equipment tier and tank size — 50, 65, or 80 gallon; straight HPWH or hybrid with electric resistance backup; standard 240V or one of the newer 120V plug-in models that skip the new circuit entirely
- Electrical work required — a like-for-like swap on an existing 240V circuit is the cheapest; a new circuit pull from the panel adds real cost; a panel upgrade (when the existing panel can’t carry the load) is the biggest single line item
- Condensate drain path — gravity drain to a nearby floor drain is simple; a condensate pump and routed line is more work
- Install location constraints — garage installs with good air volume are straightforward; tight closet installs may need louvered doors or a ducting kit to keep the heat pump from starving for air
- Gas line decommission — for gas-to-electric conversions, the old gas line needs to be safely capped back to a code-compliant point, which adds modest time
Permits and inspections are included in the quote. We pull them, we schedule them, and we handle the inspector.
Rebate paperwork is included. We submit BayREN and applicable CCA rebate applications on your behalf as part of every qualifying install.
What you won’t pay for:
- A trip charge or estimate fee — the in-home assessment is free
- Phantom rebate math — we quote your net cost using only rebates that are actually active and that you actually qualify for
- An upsell to an 80-gallon unit when a 50- or 65-gallon fits your actual hot water demand
- “Surprise” electrical work — if the panel can’t carry the load, we tell you that during the estimate, not after demo
Call (415) 359-4588 with your current unit type and approximate age, and a licensed plumber can give you a working range — no obligation.
Heat Pump Water Heater Service Across the Peninsula
We dispatch from Burlingame and run heat pump water heater installation and repair across:
Primary service area: San Francisco · Palo Alto · San Mateo · Burlingame · Millbrae · Hillsborough · San Bruno · Belmont · San Carlos · Foster City · Redwood City · Daly City
Extended service area: Berkeley · Oakland · Fremont · San Jose
Looking for a heat pump water heater installer near you? See our city-specific pages: Palo Alto · San Mateo · Redwood City · Daly City (and all 17 service areas).
Heat Pump Water Heater FAQ
What is a heat pump water heater, and how does it work?
A heat pump water heater (HPWH), sometimes called a hybrid water heater, uses a small compressor on top of the tank to pull heat out of the surrounding air and transfer it into the water — the same principle as a refrigerator running in reverse. Because it’s moving heat instead of generating it, an HPWH uses roughly one-third the energy of a standard electric resistance water heater for the same hot water output. Most modern units include backup electric resistance elements for high-demand periods (the “hybrid” mode).
How much does a heat pump water heater cost to install?
Installed cost in the Bay Area typically runs $5,000–$10,000 before rebates, depending on equipment tier, electrical work required, and whether it’s a like-for-like swap or a full gas-to-electric conversion. After stacking BayREN, applicable CCA rebates, and any active utility incentives, net cost for a typical residential install lands in the $3,000–$7,000 range. We quote in writing after a free in-home visit so the number you see covers your actual project.
How much can I save on operating cost
A typical Bay Area household spends $400–$700 a year on gas water heating, or $700–$1,200 a year on a standard electric resistance heater. A properly sized heat pump water heater drops that to roughly $150–$300 a year. With solar, it can approach zero. Payback period — even before rebates — is usually 4–7 years against gas and 2–4 years against straight electric.
Will it keep up with showers and laundry?
Yes, when properly sized. A 50-gallon HPWH covers most two-bathroom households comfortably. A 65- or 80-gallon unit covers three+ bathrooms or households with simultaneous shower-plus-laundry demand. Undersized units fall back to electric resistance mode under heavy load — which works but costs more to run. We size based on actual peak-hour hot water demand, not just bedroom count.
Do you pull the permits, or do I have to?
We pull them. Heat pump water heater installation in San Francisco, San Mateo County, and Santa Clara County requires a plumbing permit, and the electrical work requires an electrical permit. We file, schedule the inspector, and walk them through final.
Is the federal tax credit still available?
No. The Section 25C tax credit (30%, up to $2,000) expired December 31, 2025 and is not available for 2026 installs. If you installed a qualifying unit between January 2023 and December 2025 and haven’t yet claimed it, you can still amend your federal return — you have up to three years from the original due date.
Are heat pump water heaters loud?
No. The Section 25C tax credit (30%, up to $2,000) expired December 31, 2025 and is not available for 2026 installs. If you installed a qualifying unit between January 2023 and December 2025 and haven’t yet claimed it, you can still amend your federal return — you have up to three years from the original due date.
Will a heat pump water heater work in a small closet?
Sometimes, but it depends on the closet. HPWHs need roughly 700–1,000 cubic feet of air volume to run in efficient heat-pump mode. A tight closet starves the unit and forces it into resistance-only mode, which defeats the purpose. Options include louvered doors, ducting the air supply from a larger adjacent space, or relocating the unit. We check this during the assessment.
What's the 2027 BAAQMD gas water heater ban about?
The Bay Area Air Quality Management District adopted Rule 9-6, which prohibits the sale and installation of new natural-gas storage water heaters in Alameda County starting January 1, 2027. Broader Bay Area phases are expected to follow in subsequent years. Existing gas water heaters can remain in service until they fail, but replacing them with another gas tank will no longer be allowed after the deadline. Homeowners who plan ahead avoid emergency replacement under the new rule.
What about 120V plug-in heat pump water heaters — are those worth it?
For homes where running a new 240V circuit would require a panel upgrade, yes. The newer 120V models plug into a standard outlet, skip the panel upgrade cost (which can run $3,000+), and still qualify for BayREN and most CCA rebates. They have slightly slower recovery times than 240V units, so they’re best suited to one- and two-bathroom households. We’ll tell you if your home is a good candidate.
Can I do a heat pump water heater install myself?
Not legally in California for the electrical work, and not advisable for the plumbing. The 240V circuit, condensate drain, gas line decommission, and refrigerant-system unit require permits and licensed work, and an unpermitted install will show up on a future home inspection and disqualify you from every available rebate. For a one-time install with $1,000–$4,000 in rebate value on the table, working with a licensed plumber is cheaper than DIY plus the rebates you’d forfeit.
Do you offer same-day heat pump water heater service?
Do you offer same-day heat pump water heater service?
For repair calls on existing HPWHs, yes — same-day in most cases, Monday through Saturday. For new installations and gas-to-electric conversions, no — those are scheduled projects requiring permits and material lead times, typically 2–4 weeks out. If your existing water heater has failed and you need hot water back fast, call (415) 359-4588 and we’ll get a plumber out.
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Heat pump water heater installation, gas-to-electric conversion, replacement, and repair across San Francisco, Palo Alto, San Mateo, and the Peninsula. Permitted, code-compliant, BayREN rebate handled — installed by licensed master plumbers. Free in-home estimate, written quote, no pressure.