How much does it cost to replace a water heater in Keller TX in 2026?

A standard 50-gallon gas tank water heater replacement in Keller TX costs ,900 to ,200 all-in. That price includes the unit, labor, permit, thermal expansion tank, and haul-away. High-efficiency units or non-standard jobs cost ,200 to ,600. Tankless installations start at ,500. If a quote you receive is much lower, ask which line items are not included.

Why is the quote I got online so much lower than what plumbers charge?

Online quote tools and some companies give you just the unit cost plus basic labor. They leave out the permit, thermal expansion tank, haul-away, and any code upgrades. When those items get added back, the real cost in Keller and Tarrant County is typically ,900 to ,200 for a standard job.

Does water heater replacement require a permit in Keller TX?

Yes. Keller, Southlake, Trophy Club, Roanoke, Flower Mound, Colleyville, North Richland Hills, and most other Tarrant and Denton County cities require a permit for water heater replacement. The permit triggers a city inspection, usually within 1 to 3 business days. Polly Plumbing pulls the permit and sets up the inspection for you.

What is a thermal expansion tank and why do I need one?

A thermal expansion tank is a small round tank attached to the cold water pipe near your water heater. When water heats up in a closed plumbing system, it expands. Without an expansion tank, the expanded water has nowhere to go and over time that pressure damages your water heater and your pipes. It is required by code on every new installation in Keller and surrounding cities.

How long does water heater installation take?

A standard 50-gallon gas tank replacement in a Keller garage or utility room takes 2 to 3 hours from arrival to hot water running and full cleanup. Jobs with hard access, code upgrades, or specialty units may take 3 to 4 hours. Same-day installation is available in the Keller area for most in-stock units.

What brand of water heater does Polly Plumbing recommend for Keller TX?

Bradford White is the first choice for tank installations in Tarrant County hard water, due to its domestic manufacturing and heavier anode rod specification. Rheem is a strong second choice with wide parts availability. For homeowners focused on efficiency, A.O. Smith's ProLine XE series is worth considering. Big-box store brands like Whirlpool and Kenmore tend toward shorter service life in Tarrant County hard water conditions.

Does Polly Plumbing charge more for emergency water heater replacement?

No. There is no emergency surcharge at Polly Plumbing. We arrive same-day on confirmed failures and charge the same price as a scheduled installation. Call us at (817) 286-3446.

What is the difference between a tank and a tankless water heater?

A tank water heater stores 40 to 80 gallons of hot water and keeps it hot all day. A tankless water heater heats water on demand as you use it. Tank units cost less to install and work well for most households. Tankless units cost more upfront but use less energy and last longer. In Keller's hard water, tank units need annual flushing and tankless units need annual descaling.

Water Heater Replacement Cost in Keller TX (2026 All-In Pricing)

Water Heater Replacement Cost in Keller TX: The Complete 2026 Guide

By Brent Applegate, Licensed Master Plumber | Polly Plumbing | License No. RMP-42199 Serving Keller, Southlake, Trophy Club, Roanoke, Flower Mound, Colleyville, North Richland Hills, and all of Tarrant and Denton Counties. Based in Keller, TX. How Much Does Water Heater Replacement Cost in Keller TX in 2026? A standard 50-gallon gas water heater replacement … Continue reading Water Heater Replacement Cost in Keller TX: The Complete 2026 Guide