Denver's water heater specialists — that is all we do
Water Heater Installation & Repair in Denver, CO
Same-day repair and replacement across the Denver metro, 24 hours a day. We diagnose before we quote, we repair when repair is the right answer, and every install is permitted and inspected.
- Open 24/7 for emergencies
- Same-day installs and repairs
- Flat pricing, quoted up front
- Licensed & insured Colorado plumbers
Every water heater service, in one place
Tank and tankless, gas and electric, residential and commercial — installed, repaired and maintained across Denver.
Water Heater Installation
Sized to your household, permitted, installed to Denver code and the old unit hauled away.
See detailsWater Heater Repair
Same-day diagnosis. Around half the heaters we see do not need replacing.
See detailsWater Heater Replacement
Failed tank out, new one in, usually the same day — with the code corrections done properly.
See detailsTankless Water Heater Installation
Sized for Denver's 43°F January inlet water, not the brochure's 45-degree rise.
See details24/7 Emergency Repair
A person answers at 2 a.m. Burst tanks, flooding and no-hot-water mornings.
See detailsGas Water Heater Repair
Pilot, burner, gas valve and the draft testing most companies skip at altitude.
See detailsElectric Water Heater Repair
Elements, thermostats and reset trips — the three faults behind most electric failures.
See detailsHeat Pump Water Heater Installation
About a third of the running cost of electric resistance, with rebate paperwork included.
See detailsWater Heater Maintenance & Flush
Sediment out, anode measured, T&P tested. The cheapest years of tank life you can buy.
See detailsNo hot water right now? Start here.
Match the symptom, get a straight answer, and skip the diagnostic guesswork.
- No hot water at allGas: pilot out, thermocouple, or a safety shutdown from a blocked flue. Electric: breaker, tripped ECO reset, or a failed upper element.
- Hot water runs out in ten minutesFailed lower element, a broken dip tube, or sediment stealing a third of your tank capacity.
- Water pooling at the baseDrain valve, element gasket, relief discharge, a fitting — or the tank. Five of the six are repairs.
- Popping, rumbling, kettlingSediment on the tank floor trapping steam. Flush it before it cracks the glass lining.
- Rotten-egg smell in the hot waterBacteria reacting with the magnesium anode rod. An aluminum-zinc or powered rod ends it.
- Rusty hot water, clear cold waterThe anode is gone and the tank steel is corroding. This is the last warning.
- Relief valve drippingThermal expansion on a closed system, or pressure over 80 psi. Never cap it.
Any of these can be checked on the phone in two minutes. Call 720-735-8936 and describe what it is doing.
What Denver does to water heaters
Water heaters fail differently here than they do at sea level, and a company that works this market every day knows where to look first.
Thin air changes combustion
At 5,280 feet there is meaningfully less oxygen per cubic foot of air than at sea level. Atmospheric gas water heaters rely entirely on buoyancy to pull exhaust up the flue, and that buoyancy is weaker here. Combine that with two decades of air-sealing — new windows, spray foam, high-CFM range hoods, sealed rim joists — and a basement that drafted fine in 1998 can now pull combustion gases back into the house when the dryer and furnace run together. We smoke-test draft under worst-case conditions on every gas call. Most companies do not.
Cold inlet water in January
Municipal water arrives in the low-to-mid 40s Fahrenheit through a Denver winter. That is why a tankless unit advertised at 9.8 gallons per minute delivers closer to 5.4 here in January, and why an electric tank that was adequate in September feels undersized in February. We size to the winter number. It is the most common reason people are unhappy with an otherwise good water heater.
Closed systems and dripping relief valves
Most Denver Water service connections include a pressure-reducing valve or backflow preventer, which makes the home's plumbing a closed system. Heated water expands with nowhere to go, pressure spikes on every heating cycle, and the T&P relief valve starts weeping. The fix is a correctly charged expansion tank — charged to your measured pressure, not the 40 psi it left the factory at.
Sediment, softness and the south metro
Denver Water's snowmelt supply is comparatively soft, which is kind to tanks. But hardness across the metro is not uniform — homes drawing on Denver Basin groundwater in the south and east suburbs build sediment considerably faster, and any hardness at all deposits inside a tankless heat exchanger. An annual flush is the difference between a tank that reaches eight years and one that reaches twelve.
Permits are not optional
Water heater replacement in the City and County of Denver requires a plumbing permit, and the work is inspected. Unpermitted installs surface later as conditions on a home inspection when you sell, and insurers have declined water-damage claims over them. We pull the permit, meet the inspector and hand you the paperwork.
How a job with us actually goes
You call and describe it
We ask the brand, the fuel, the age and what it is doing. Most of the time we can tell you the likely cause and a price range before we hang up.
We give you an arrival window
Two hours, with a text when the truck leaves. Same-day for no-hot-water calls.
We diagnose and show you
Meter readings, the pulled anode rod, the pressure gauge. You see what we see.
You get a flat price
Repair and replacement options both, with our honest recommendation and the reasoning behind it. You decide.
We do the work properly
Code corrections included, permit pulled, floors protected, old unit hauled away.
We verify before we leave
Combustion and draft on gas, recovery rate on electric, temperature set to 120°F, and no drips anywhere.
What it costs
Real Denver-metro ranges, published up front. Your exact price is quoted flat before any work begins.
| Job | Typical Denver range | Notes |
|---|---|---|
| Diagnostic visit | Flat fee, credited to the repair | Same-day slots available |
| Common repairs | $150–$650 | Thermocouple, element, thermostat, valves |
| Gas or electric tank, installed | $1,450–$2,400 | Includes permit, code corrections and haul-away |
| Power-vent gas tank | $2,200–$3,200 | For finished basements with no usable chimney |
| Hybrid heat pump | $3,400–$5,200 | Before rebates — often substantially less after |
| Tankless conversion | $4,200–$6,800 | Includes gas upsizing, venting and isolation valves |
| Annual maintenance service | $140–$280 | Flush, anode check, T&P test, pressure reading |
See the full Denver water heater cost guide, including what drives a quote up or down.
Denver metro coverage and our local branches
We provide rapid response water heater services across the Denver metro area, including our dedicated local branches in Edgewater, Northglenn, Sherrelwood, Glendale and Federal Heights.
- Edgewater
Water heater installation and repair for Edgewater, CO and the west side of Sloan's Lake.
www.edgewaterwaterheaters.us - Northglenn
Repair, replacement and emergency response for Northglenn and the north I-25 corridor.
www.northglennwaterheaterrepair.us - Sherrelwood
Tank and tankless service throughout Sherrelwood and unincorporated Adams County.
www.waterheatersherrelwood.us - Glendale
Condo, apartment and commercial water heater work in Glendale and Cherry Creek.
www.glendalecowaterheaters.us - Federal Heights
Same-day installs and 24/7 emergency calls in Federal Heights and Thornton.
www.federalheightswaterheater.us
Why homeowners call us back
Water heater work has a bad reputation for a reason: it is an urgent purchase, most people have no way to judge the advice they are given, and plenty of companies quote a replacement before they have opened the access panel. We built this business around the opposite habit.
- We diagnose before we quote. Millivolt readings, element resistance, draft tests, static pressure at a hose bibb. You get the measurement and the reason, not a verdict.
- We repair when repair is right. A $220 element on an eight-year-old tank is a good outcome, even though a replacement pays us more.
- Flat pricing. The number we say on the phone is the number on the invoice. No hourly meter running while we go to the truck.
- Permitted and inspected. Every replacement, every time.
- We answer at night. A live person, not an answering service taking a message for Monday.
- We leave the code corrections done. T&P discharge, drip leg, dielectric unions, expansion tank, vent slope. They are part of the job, not an upsell.
Frequently asked questions
How much does it cost to replace a water heater in Denver?
A standard 40–50 gallon gas or electric tank runs about $1,450–$2,400 installed, including the permit, code corrections and removal of the old unit. Power-vent gas runs $2,200–$3,200, hybrid heat pump $3,400–$5,200 before rebates, and a tankless conversion $4,200–$6,800. We quote a flat price before starting.
Can you come out the same day?
Yes. We hold same-day slots every morning for no-hot-water calls and stock the common 40- and 50-gallon gas and electric units on the truck, so a single visit usually ends with hot water restored.
Do I need a permit to replace a water heater in Denver?
Yes — the City and County of Denver requires a plumbing permit and inspects the work. We pull it under our license and meet the inspector. Be cautious of any quote priced as though the permit is optional.
Should I repair or replace my water heater?
If the tank itself is leaking, replace. Otherwise: under eight years and a sub-$400 repair, fix it. Past twelve years, replace. In between, compare the repair against half the cost of a new installed unit. We will give you both numbers and our honest recommendation.
How long does a water heater last in Denver?
Eight to twelve years for a gas tank, ten to fifteen for electric, and eighteen to twenty for a well-maintained tankless unit. The single biggest variable is whether the tank was flushed annually and the anode rod replaced when it was consumed.
Do you work nights and weekends?
We answer the phone 24 hours a day and dispatch for genuine emergencies at any hour. Scheduled installations run seven days a week, 7:00 a.m. to 7:00 p.m. After-hours calls carry an emergency rate, quoted to you before we dispatch.
What brands do you install and service?
We install Rheem, A. O. Smith, Bradford White, State, Navien and Rinnai, and we repair every major brand sold in Colorado including Noritz, Takagi, Kenmore, Whirlpool, GE and American.
What areas do you cover?
The whole Denver metro, with dedicated local branches in Edgewater, Northglenn, Sherrelwood, Glendale and Federal Heights. See our service areas page.
Cold shower this morning? We can be out today.
Tell us what the heater is doing and we will give you a straight answer on the phone — repair, replace, or wait.