Water Heater St. Charles
No hot water? Tank leaking? Call now — we answer fast, and no-hot-water and leaking-tank calls get priority scheduling. Call (636) 336-2866

Water Heater Installation in Lake St. Louis, MO

New 40- and 50-gallon tank water heaters installed in Lake St. Louis — permits handled, old unit hauled away, and no-hot-water calls get priority scheduling.

40-gallon installed — $2,00050-gallon installed — $2,100

One flat price. No quotes, no diagnostic fees, no surprises.

Call or Text (636) 336-2866 — Book Your Install💬 Text usBook with the form

We cover all of St. Charles County — St. Charles, Wentzville, O'Fallon, St. Peters, Lake St. Louis, Cottleville, Dardenne Prairie, Weldon Spring, Foristell, and St. Paul.

Licensed & insured installersInstalls are performed by vetted local plumbers — licensed and insured.
One flat price, publishedYour price is on this page before you ever call — $2,000 (40 gal) / $2,100 (50 gal) installed. No hourly billing surprises.
Permits handledWe pull the required permit and handle the inspection paperwork.
Old unit hauled awayYour old water heater is drained, removed, and disposed of.
Warranty on laborInstallation labor is warranted, on top of the manufacturer's tank warranty.
Priority scheduling for emergenciesNo-hot-water and leaking-tank calls jump the line — you get the earliest available slot.

Lake-community homes from the 70s to today

Lake St. Louis was built as a planned lake community, with original homes from the 1970s and 80s around the lakes and newer subdivisions like Heritage of Hawk Ridge added since. The older homes are deep into replacement territory for water heaters — many are on units well past their expected life.

We serve all of Lake St. Louis with flat installed pricing — $2,000 for a 40-gallon water heater, $2,100 for a 50-gallon. One flat price, a licensed and insured installer, permits handled, and haul-away of your old tank included in every job.

Local note: Lake St. Louis homes range from cottages near the water to large newer builds — we'll size your new 40- or 50-gallon tank to your bathrooms and household so you're not running out of hot water on Saturday morning.

How it works

1

Call, text, or send the form

Tell us what's happening — no hot water, a leak, or an old unit on borrowed time. We'll get you scheduled at the earliest available slot — emergencies get priority.

2

Your price is already set

There's no quote step for a standard install — the flat rate is published: $2,000 for a 40-gallon, $2,100 for a 50-gallon, installed. We just confirm your size and lock in your install time.

3

Install & haul-away

Most installs take 2–4 hours. We install the new unit, test it, walk you through it, and haul the old one away.

Book your install

Tell us what's going on and we'll call you back to confirm your install time — your price is already set: $2,000 (40 gal) / $2,100 (50 gal) installed. This form goes straight to the owner's inbox. Prefer to talk? Call or text (636) 336-2866 or text us.

Your request comes straight to us — we confirm your install time and dispatch a vetted local installer. Your price is the published flat rate. No spam, and we never sell your information.

Also serving nearby

St. Charles · Wentzville · O'Fallon · St. Peters — and everywhere else in St. Charles County.

Need a water heater in Lake St. Louis?

One flat installed price — $2,000 (40 gal) / $2,100 (50 gal) — permits handled, old unit hauled away. Call now — no-hot-water and leaking-tank calls get priority scheduling.

Call or Text (636) 336-2866 — Book Your Install 💬 Text us

or book with the form

© 2026 Water Heater St. Charles. Serving St. Charles County, Missouri.
📞 Call or Text to Book — (636) 336-2866