Tank water heaters
30, 40, and 50-gallon gas and electric. The standard for most homes — straightforward replacement, lower upfront cost.
North Las Vegas · Las Vegas Valley
Water heater replacement done right.
No hot water? Leaking tank? Thinking about tankless? Sentinel Plumbing installs tank and tankless water heaters across North Las Vegas, Aliante, Centennial Hills, Summerlin, and Las Vegas. Clean install, full haul-away, and we double-check everything before we leave.
Licensed NV C-1D 0091125
100+ 5-star Google reviews
Same-day or next-day service when available
1-yr labor + 6-yr manufacturer warranty
What we install
Tank and tankless water heaters, installed clean.
Whether your old tank gave out or you're upgrading to tankless, we handle the whole job — sizing, installation, standard replacement items, safety checks, and haul-away of the old unit. If code upgrades or corrections are needed, we explain those clearly before work starts. We test the install before we leave so you have hot water when we drive off.
Tankless water heaters
Endless hot water, smaller footprint, longer service life. Higher upfront cost but lower energy use over time.
Annual flush & descale
Hard water shortens tank life. An annual flush ($125 for tank, $185 tankless descale) keeps your unit running longer.
Tankless water heaters
How a tankless water heater works.
A tankless water heater does not store hot water in a tank. It heats water on demand as water moves through the unit, which can help busy households get continuous hot water while saving space.
This illustration shows the basic process: cold water enters the unit, the gas burner heats the heat exchanger, and hot water leaves the unit only when a shower, sink, or faucet is calling for hot water.
Cold water enters
When you turn on a hot water fixture, cold water flows into the tankless unit and activates the burner.
Heat exchanger warms it
The water passes through a heat exchanger so it can be heated quickly without a storage tank.
Hot water flows out
Hot water is delivered to your shower, sink, or faucet on demand, instead of being stored all day.
Tank vs tankless
Which water heater is better for your home?
Both options can be the right choice. Tank water heaters are usually more affordable up front. Tankless systems cost more to install but can save space, provide continuous hot water, and last longer with proper maintenance.
Feature
Tank Water Heater
Tankless Water Heater
Upfront cost
Lower upfront cost for most standard replacements.
Higher upfront cost because gas, venting, electrical, and drain requirements may need changes.
Hot water supply
Limited to the amount stored in the tank.
Continuous hot water when properly sized for the home.
Space
Larger tank takes up more room.
Compact wall-mounted unit saves space.
Maintenance
Annual flush recommended in Las Vegas hard water.
Annual descale recommended to protect the heat exchanger.
Benefits of tankless
Continuous hot water, smaller footprint, energy savings, and longer expected service life with proper maintenance.
Things to consider
Tankless may require gas line upgrades, venting changes, an electrical outlet, condensate handling, and proper sizing.
Free estimate
For tankless installs, Sentinel Plumbing needs to look at the property to give an accurate estimate and installation options.
Common signs
Is it time to replace your water heater?
If you're seeing any of these, give us a call — we can usually tell you over the phone whether it's a quick fix or replacement time.
- No hot water — or it's only lukewarm
- Hot water runs out after 5–10 minutes
- Rust-colored or smelly hot water
- Water pooling around the base of the tank
- Popping, rumbling, or knocking from the tank
- The tank is 10+ years old
What to expect
How a water heater replacement works.
-
1
Call or book online
Tell us what's happening. We'll give you an honest answer about whether it sounds like a repair or replacement.
-
2
On-site assessment
We look at the existing unit, venting, gas line, water lines, electrical, drain options, and access. You get an upfront price before any work starts.
-
3
Install & haul-away
Clean standard replacement, safety checks, and haul-away of the old unit. If venting, gas, water, drain, or code corrections are needed, we explain those before work starts.
-
4
Test & walk-through
We run it, test hot water at every fixture, walk you through what we did, and answer your questions.
Honest, upfront pricing
Water heater replacement pricing.
Prices below are starting points for standard water heater replacements where the existing setup is already code-compliant or only needs basic replacement items. Final pricing may change if the installation requires code upgrades, venting corrections, gas or water line modifications, shutoff valve replacement, drain pan, expansion tank, sediment trap, permit requirements, access corrections, or other safety/code corrections. We explain everything up front before work starts.
40-gallon tank
starting at$1,600
- Standard tank-to-tank replacement
- Reconnect existing venting when safe and code-compliant
- New T&P drain line if needed
- Earthquake straps
- Full haul-away of old unit
50-gallon tank
starting at$1,750
- For larger households or higher demand
- Standard install + haul-away
- Additional code upgrades priced if needed
Tankless install
starting atQuote
- Endless hot water, smaller footprint
- Price depends on gas line & venting
- Full assessment before we quote
Maintenance
tune-up$125
- Annual tank flush — $125
- Tankless descale — $185
- Anode rod replacement — $185 + $90 part
All water heater installs come with a 1-year labor warranty from Sentinel Plumbing plus the manufacturer's warranty — typically 6 years on the tank — which we register for you at install.
Why Sentinel
Plumbing done honestly.
01
Family-owned, local
Headquartered in North Las Vegas. We answer the phone ourselves.
02
Upfront pricing
You see the number before we start. No surprise add-ons at the end.
03
Licensed & insured
Nevada license NV C-1D 0091125. Fully insured.
04
Warranty backed
1-year labor warranty plus 6-year manufacturer warranty on the tank.
Related services
Other plumbing services we offer.
Leak Detection
Slab leaks, hidden pipe leaks, pressure loss — diagnosed before drywall comes down.
Learn moreEmergency Plumbing
Burst pipes, sewage backups, no water — fast response when available.
Learn moreDrain Cleaning
Slow sinks, clogged drains, blocked main lines — cleared without the markup.
Learn moreService area
Water heater replacement across the Las Vegas Valley.
Same-day or next-day service when available across our service area.
Frequently asked
Water heater questions, answered.
How long does a water heater last in Las Vegas?
Most tank water heaters in the Las Vegas Valley last 8 to 12 years. Hard water shortens that lifespan because mineral buildup wears the tank from the inside. If your water heater is over 10 years old, plan for replacement before it fails.
How does a tankless water heater work?
A tankless water heater heats water on demand. Cold water enters the unit when you turn on a hot water fixture, passes through a heat exchanger, and leaves the unit as hot water. Because there is no storage tank, it only heats water when you need it.
What are the benefits of a tankless water heater?
Tankless water heaters can provide continuous hot water, save space, use less energy than many traditional tank systems, and often last longer with proper maintenance. They can be a good option for busy households or homes with higher hot water demand.
What needs to be checked before installing tankless?
Tankless installations need an in-person estimate because we have to check gas line size, venting, water lines, electrical outlet, condensate or drain options, clearances, and the home’s hot water demand.
Tank or tankless — which is better for my home?
Tank heaters are cheaper up front and simpler to replace like-for-like. Tankless units cost more to install but can last longer, use less energy, save space, and provide continuous hot water. The right answer depends on your gas line, venting, household size, hot water demand, and budget — we walk through both options at the estimate.
Why do Las Vegas water heaters fail faster?
Las Vegas has some of the hardest water in the country. Calcium and magnesium build up at the bottom of the tank, the anode rod gets eaten faster, and the tank corrodes from the inside. An annual flush slows it down. Sentinel Shield Membership includes a yearly flush.
Do you haul away the old water heater?
Yes. Every replacement install includes full haul-away of your old unit. You don't have to deal with disposal.
What does the warranty cover?
Every water heater install comes with a 1-year labor warranty from Sentinel Plumbing. The water heater itself carries the manufacturer's warranty — typically 6 years on the tank — which we register for you at install.
How long does the installation take?
A standard tank-to-tank replacement is usually 2 to 4 hours from arrival to hot water. Tankless installs take longer, especially if we're upgrading the gas line or venting. We give you a real timeline at the estimate.
Ready for hot water again?
Call us or book online. Same-day or next-day service when available. We'll give you an honest answer over the phone before we send anyone out.