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St. George Home Services

Plumbing · Repairs and leaks

Garbage disposal replacement

A disposal replaced, with the mounting, the drain connections and the dishwasher line done properly.

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 wall-mounted utility sink installed with its trap and supply pipework visible below
A utility sink, plumbed and vented. Southern California.

What the work is

A disposal swap is mostly plumbing under the sink: the mounting ring, the discharge, the trap arm and, if there is a dishwasher, the high loop or air gap that stops the dishwasher draining into the disposal.

The other half is electrical. Where the existing supply is a like-for-like connection we make it; anything beyond that is done by our licensed electrical partner, and we will tell you which one yours is before you book.

What is included

  • Removing the old unit
  • New mounting assembly
  • Discharge, trap and dishwasher connection
  • Testing under load and checking for leaks
  • Taking the old unit away

What is not

  • New circuits, switches or receptacles, which are our licensed electrical partner's work
  • Repairing a sink flange or basket strainer that fails when disturbed
  • Replacing a corroded trap arm inside the wall, which we will show you and quote

Do not put a septic-safe claim on us

If your property is on a septic system rather than city sewer, tell us. What a disposal does to a septic system is a real question and the answer depends on your system, not on a sticker on the box.

What to ask anyone quoting this, us included

  • Is the electrical connection like-for-like, or does it need an electrician?
  • Is there a high loop or an air gap for the dishwasher?
  • What horsepower, and why that one?

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.

  • Grease does not clog a kitchen line by cooling. It saponifies — fats and oils react with the soaps and detergents already in the drain and form insoluble soaps that stick to the pipe wall and build up. A disposal does not change that chemistry.1
  • In hard-water areas the kitchen and laundry drain lines also collect hard white-gray calcium carbonate deposits, particularly on the drain side of a dishwasher.1
  • A cable opens a grease plug. Jetting takes the line back to full diameter. Cable buys weeks; jetting buys years.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. 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. 3 sections cited. Hover a number above for the section.

The rest of repairs and leaks

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

Call (435) 850-0053

7 a.m. to 5 p.m., weekdays. Emergency calls answered any hour, every day.