St. George Home Services

Plumbing · Water heaters

Water heater replacement, gas

A 40 or 50 gallon gas heater, installed with the code upgrades, the permit and the old one hauled away.

One flat fee to find out what is wrong. You are told it on the phone before anyone is dispatched, and it comes off the job if you hire us. Read our Plain Terms

A new gas storage water heater in a closet with two straps bolted to the framing at the upper and lower thirds of the tank, insulated hot and cold lines, a corrugated gas connector and an expansion tank on the line above
Strapped at the upper and lower third, expansion tank on the cold line. Southern California.

What the work is

A replacement is not just a swap. The heater that comes out was installed to whatever the code said then; the one going in has to meet the code now. That usually means a proper drain pan and drain, a thermal expansion tank if there is a check valve or pressure reducing valve on the service, a sediment trap on the gas, correct venting, and strapping.

We quote all of that up front. The thing that turns a heater replacement into an argument is a quote written for the tank alone and then a second conversation on the day about everything around it. You get one number.

The old unit leaves with us. So does the box.

What is included

  • The unit, set, connected, filled, purged and lit
  • Drain pan and drain line where one is required
  • Thermal expansion tank where the service has a check valve or a pressure reducing valve
  • Sediment trap, new flex connector and a shutoff you can reach
  • Strapping at the upper and lower third
  • The permit and the inspection
  • Hauling the old heater and the packaging away

What is not

  • Moving the heater to a different location. That is a separate job and a bigger one
  • Electrical work beyond a like-for-like connection. Electrical is subcontracted to our licensed partner
  • Repairing a gas line that fails the pressure test. We will show you and quote it
  • Drywall or door alterations if the new unit does not fit the old opening

Strapping is not optional here

Utah deletes the model code's water heater anchoring section and replaces it with its own, so strapping is required statewide here rather than being triggered by a seismic design category. Every heater we set gets strapped at the upper and lower third whether the inspector is coming or not.

The garage rule is its own section, and there is an exception for a flammable vapour ignition resistant unit. The guide below sets out which rule applies to which install.

What the water does to a tank

St. George's Water Distribution Division tells residents to set a softener to 18 grains per gallon, with a maximum of 22. Four tankless makers cap total hardness at 200 mg/L, which is about 12 grains. That gap is the single most important fact about water heaters in this county, and it is the reason the guide below exists.

On a tank heater, hardness costs efficiency rather than killing the unit outright, and sulfate in some source blends is the reason for the rotten-egg smell that shows up in some neighbourhoods and not others. The anode rod is the part that deals with it, and replacing one is expressly maintenance under Bradford White's warranty. Pulling one out and leaving it out is misuse.

What to ask anyone quoting this, us included

  • Is an expansion tank included, and how did you decide?
  • Is the permit in the price?
  • Who hauls the old one away?
  • Will it be strapped, and where do the straps land on the tank?

What we can show you in writing

Every line traces to a document we read in full. The number after a sentence points to the research below.

  • The City of St. George's Water Distribution Division instructs residents to set water softeners to 18 grains per gallon, with a maximum of 22 grains.1
  • Bradford White's tank warranty excludes failure from sediment or lime precipitate in the tank, and voids if the anode is removed.2
  • Bradford White's terms are a limited lifetime tank for a single-family original installation, 6-year parts, and no labour coverage at all.2
  • 18 grains per gallon is about 308 mg/L as calcium carbonate and 22 gpg about 376 mg/L, both classed as very hard on the USGS scale.1
  • The city asks residents to keep softener settings low because softener salt raises the dissolved-solids level of the reclaimed water the city reuses for irrigation.1

Where this comes from

Every line above traces to a document we read in full. The number after a sentence points to the research below; hover it for the section. If you find a line wrong, tell us and we will fix it and say so.

  1. Environment, water and ground research, August 2026 Compiled from the cities' own water quality reports, Utah Geological Survey Special Study 127, the Utah State Hazard Mitigation Plan, Washington County GIS hazard layers, NOAA climate records, EPA radon zones and Census QuickFacts. 2 sections cited. Hover a number above for the section.
  2. Plumbing research, August 2026 Compiled from manufacturer warranty documents and installation manuals (A.O. Smith, Noritz, Rinnai, Rheem, Navien, Bradford White), the Battelle / Water Quality Research Foundation study, the Utah Code and DOPL rules. 1 section cited. Hover a number above for the section.

Read before you decide

The rest of water heaters

The quote is the number. There is no second number.

Call (801) 680-6859

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