Water heater replacement in Rapid City — often the same day
When the tank is done, you want it gone and a new one running before bedtime. We quote the whole job upfront and install to code — not just “hook up the new one where the old one was.”
- Upfront price before we start
- Licensed & insured
- Written warranty
- On call 24/7
Signs it’s time to replace, not repair
- Water on the floor that’s coming from the tank itself, not a fitting (how to tell)
- Rust-colored water from the hot taps only
- The tank is 10+ years old and this is the second repair
- Popping and rumbling that a flush didn’t fix — the sediment has baked on
- It can’t keep up any more, and the family hasn’t grown
What a proper replacement looks like
A water heater swap is a two-to-four-hour job done right, and a lot of them in Rapid City weren’t. When we replace a tank we:
- Shut down, drain, and disconnect the old unit and get it out of the house
- Set the new unit, and correct anything the old install got wrong — undersized vent, missing expansion tank, no drain pan, a T&P line that dumps nowhere
- Make new connections with new shutoffs and dielectric fittings so the next plumber isn’t fighting corroded pipe
- Bring the gas line, venting, and electrical to current code
- Fill, purge, fire, set the temperature, check for leaks and CO, and walk you through it
- Haul the old one away and leave the space cleaner than we found it
Your options, straight
Standard tank (gas or electric) — cheapest to install, proven, 8–12 years in our water. Power-vent gas — for homes with no chimney or a shared, marginal flue; a few hundred more. Tankless — endless hot water, wall-mounted, 20-year life, higher upfront cost and it needs regular descaling here (tank vs. tankless, compared). Indirect — if you already have a boiler, this is often the best-value, longest-lasting option of all; see the installs on our workmanship page.
Current offers: $150 off gas, $100 off electric, $250 off tankless installed by us.
Need it fixed today?
A real person answers, day or night. Most Rapid City calls: within 60 minutes or less.
605-877-5050Upfront price before any work starts.
Questions we get about water heater replacement
Can you replace my water heater today?
Often, yes. Same-day service is usually available, and we tell you on the phone whether your size and fuel type can be done today; power-vent and tankless units sometimes need a day for the right model.
What size water heater do I need?
Most 2–3 bathroom Rapid City homes do fine on a 40- or 50-gallon tank. Bigger families, soaking tubs, or a household that runs the dishwasher, laundry, and showers at once should look at 50+ gallons or a tankless unit. We size it to how you actually use hot water, not to upsell.
Gas or electric?
Stay with what you have unless there’s a reason to switch — gas is cheaper to run in Rapid City, electric is cheaper to install. If you have no usable chimney, a power-vent gas unit or an electric tank solves that.
What’s included in the replacement price?
The unit, labor, new water connections and shutoff, gas flex or electrical hookup, T&P discharge line, expansion tank if your system is closed, venting to code, haul-away of the old tank, and the written warranty. Anything extra — a drain pan, relocating the unit, bringing an old gas line up to code — is quoted before we start.
Also worth a look
Water Heater Cost Guide
What actually drives the price — and how to read a quote.
See water heater cost guide
Tankless Water Heaters
Navien, Rinnai, Rheem — sized for our winters.
See tankless water heatersWater Heaters
Repair, replacement, tankless & indirect. Our specialty.
See water heaters
Coupons
$95 flush · $35 off service · up to $250 off installs.
See couponsNo hot water? No heat? A leak?
A real person answers, 24/7. Upfront price before we start. Fast. Friendly. Professional.