What Does a Water Heater Replacement Cost in Pasadena, CA?

Replacing a gas storage tank water heater in Pasadena is $1,595 for a 30- or 40-gallon unit and $1,795 for a 50-gallon unit at our book price, installed. An electric replacement is $1,450 or $1,675. Those are the same prices we publish for every city we serve. What changes from house to house in Pasadena is the permit, the code items the inspector will look for, and whether the heater is in the garage or somewhere harder to reach. This guide walks through each of those so the number on the quote is not a surprise.

The replacement price covers delivery, draining and removing the old unit from its spot, a new Bradford White or A. O. Smith gas storage tank (or another brand if you have a preference), new hot and cold water supply lines, a one-year labor warranty on every connection we make, and the manufacturer's six-year warranty on the tank. It assumes a residential, same-location swap of an existing water heater at ground level, in the garage or on the side of the house. Hauling the old tank away is $95. The permit and any code items are separate, and they are the part of the quote that actually varies, so they get their own sections below. The full list is on our pricing page, and the replacement itself is described on our water heater installation page.

Pasadena's Craftsman bungalows and 1920s Spanish revivals in Bungalow Heaven, Madison Heights and along the Arroyo sit alongside newer condos and ADUs in East Pasadena and Hastings Ranch. Older homes hide aging garage or closet installs with dated gas lines; designated historic homes and hillside lots off the Arroyo mean tight closets and a careful inspection. Replacement day is when the inspector expects those to be brought up to current code. The book prices for the items that come up most: earthquake straps $225 when added during the installation; a drain pan without piping $75; a gas sediment trap $225; a gas valve and supply line $165; a venting upgrade from single wall to double wall $250 to $450 for up to four fittings above the heater; and a 3/4-inch cold water inlet ball valve $249. An expansion tank is quoted on site. A closet installation inside the house, or a second-floor unit, carries a $249 surcharge over the book price.

The City of Pasadena Building & Safety Division's Permit Center requires a plumbing permit and an inspection for a water heater replacement; the office is at 175 North Garfield Avenue and can be reached at (626) 744-4200. We pull the permit and meet the inspector for a $295 administrative fee plus the city's own permit fee, which is passed through at cost as its own line on the quote. Pasadena's published fee for a water heater change-out is $118 (a $78 permit processing fee plus $40 for the water heater and vent on the FY 2027 fee schedule, before the city's percentage surcharges), so the permit line comes to $295 + $118 = $413. Plumbing permits for a change-out can be pulled through the city's Express Permit Portal. Pasadena's housing inspection checklist (PMC 14.12.640) flags missing or inadequate water heater strapping, and a water heater replaced without a permit. You can decline and pull the permit yourself, but if the inspector then calls for a code correction, that work is charged at book price.

Pasadena Water and Power measured its own system at 13 grains per gallon in 2025 (222 mg/L as calcium carbonate, ranging from 202 to 256 mg/L), against the 10.5 grains that classifies water as very hard. Sediment settles on the bottom of a gas tank, insulates the burner from the water above it, and makes the unit run longer and hotter for the same shower. That does not change the replacement price, but it decides how long the new tank lasts. A storage tank flush is $139, and on this water most tanks do better on a flush every year rather than every two. The storage tank membership is $99 per year and includes that yearly flush, free diagnostics when a repair is needed, 10% off services and add-ons, and 5% off a replacement.

If the current heater is electric, the replacement is $1,450 for 30 or 40 gallons and $1,675 for 50, tied in to the existing electrical connections; any problem with the wiring itself is work for an electrician. A 75- or 100-gallon tank is quoted on site. If you are considering a tankless unit while the tank is out anyway, converting a 40-gallon tank to a Noritz EZTR40 is $3,295 and a 50-gallon tank to an EZTR50 is $3,695; we cover that in what a tankless water heater costs in Pasadena. Pressure regulators, expansion tanks, circulating pumps and relocations are quoted on site. For how the numbers compare across the area, see our San Gabriel Valley replacement cost guide.

Book prices apply during normal business hours, Monday through Friday, 8 AM to 5 PM; pricing outside those hours or in an emergency is subject to change. Appointments are made at least 24 hours in advance. Prices are current as of September 2026 and subject to change, and every quote is in writing before any work starts. If the total is more than you planned for, financing is available. We dispatch from Pico Rivera; call 833-927-3356 or send us the details and we will put the number in writing.