Licensed • BBB A+ • CA #525190
Water Heater Installation in Concord & Central Contra Costa
Permit filed, code met, inspection handled — by the same licensed plumber who does the install.
Call (925) 584-9846Installation is mostly about what happens around the tank
Any plumber can set a water heater in place and connect two pipes. The difference between an install that lasts its full warranty and one that fails early is almost never the tank itself — it is the strapping, the relief-valve discharge, whether anyone checked for a closed system, and whether the flue actually drafts. Those are also precisely the items a building inspector looks at.
Dan Phillips has been installing water heaters in Contra Costa County, CA for 38 years under California licence #525190, and does the work himself. There is no crew, no subcontractor, and no salesperson between you and the person holding the pipe wrench — which is why the quote you get is for the job as it actually needs doing, including the parts that are easy to leave out.
If your current heater is still working and you are weighing repair against replacement, start with water heater repair instead — replacing a unit that has years left in it is rarely the right call.
If you are replacing a gas unit, it is worth knowing where the Bay Area emission rules leave you first: the 2027 zero-NOx rule applies to gas water heaters under 75,000 BTU/hr and changes which equipment can be installed — though not as soon, or as absolutely, as most coverage suggests.
What install day looks like
A straight tank-for-tank replacement is a three-to-four hour job and you have hot water again the same afternoon. Here is the actual sequence, so nothing about the day is a surprise.
- 1
Arrival and shut-down
Gas or power off, cold supply isolated, and the old tank drained. On a straight tank-for-tank swap this is about 30 minutes, and it is the point at which any nasty surprises behind the unit show up.
- 2
Old unit out
Disconnected, drained down and carried out on protection, not dragged across your floor. The old heater leaves with us — hauling it away is part of the job, not an add-on.
- 3
New unit set and strapped
Positioned, levelled, and seismically strapped at two points — upper and lower third of the tank — which California requires and which is the single most commonly failed item on a DIY install.
- 4
Connections and safety devices
New flexible connectors and dielectric unions, a sediment trap on the gas line, the temperature-and-pressure relief valve piped to an approved discharge point, and a thermal expansion tank where the house is on a closed system.
- 5
Venting, combustion air and fire-up
Draft checked on the flue rather than assumed, combustion air verified, thermostat set to 120°F, and the system run through a full heat cycle while we watch it.
- 6
Permit and inspection
The permit is filed and the inspection is met by us. You should not be the one taking a morning off work to explain a water heater to a building inspector.
What California code requires — and what usually gets skipped
Every item below is part of a compliant installation. Every one of them also gets left out often enough that it is worth knowing what to look for, whoever you hire. If you are comparing quotes and one is noticeably cheaper, this list is generally where the difference went.
Seismic strapping
Two straps, one in the upper third and one in the lower third of the tank, anchored into structure. Non-negotiable in California and the most frequent reason a water heater fails inspection.
Relief valve discharge
The temperature-and-pressure valve needs a full-size discharge line running downhill to an approved termination. Capped, reduced, or upward-running discharge lines are a safety failure, not a technicality.
Thermal expansion control
If the house has a pressure-reducing valve or backflow device, it is a closed system and heated water has nowhere to expand. An expansion tank is required, and without one the relief valve weeps until it fails.
Drain pan and drainage
Where a leak would damage the building — interior closets, upstairs laundry rooms, attics — a pan piped to an approved drain is required. This is the cheapest insurance in the whole job.
Elevated ignition in garages
Gas units in garages need their ignition source raised clear of the floor so fuel vapours cannot reach it, and adequate combustion air supplied to the space.
Gas line sizing
Mostly a tankless issue. A 199,000 BTU on-demand unit will not perform on the half-inch line that fed a 40,000 BTU tank, and undersizing it is how tankless conversions end up disappointing.
Requirements are set by the California Plumbing Code and enforced locally, so specifics and fees vary between cities and unincorporated county areas. We confirm what applies to your address before quoting.
Sized for demand
Based on how much hot water you use at once, not just bedroom count.
Permit included
Filed by us, inspection met by us, paperwork left with you.
Same-day on swaps
Tank-for-tank replacements finish the same day in most cases.
Frequently Asked Questions - Concord
Get answers to common plumbing and water heater questions
Ready for a straight answer on your install?
Tell us what you have now and where it sits, and you will get a quote for the whole job — unit, code items, permit and haul-away — not a headline number that grows on the day.
Considering going tankless? Tankless installation covers the gas and venting side. Serving 12 cities across Contra Costa County.