Water Heater Installation in Denver, CO
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Your water heater works eight months of hard winter here
Denver County homes need heat from October through May. That's most of the year your water heater is fighting incoming water that's already cold before it ever hits the tank. Winter nights average 19°F, and the colder the water coming in, the harder the unit works to bring it up to temperature.
The power doesn't always stay on to help it. Across Colorado, 13% of households lost power for 24 hours or more in 2024, and the last ten years brought 32 winter storms and 64 damaging wind events to work with. A new installation should account for that, not just for the coldest night but for the night the power goes out too. Federal rules set a minimum efficiency for storage water heaters based on the tank's rated volume, so the right minimum depends on the size unit your home needs.
- 19°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 13%
- of Colorado households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
A heat pump water heater would save about $370 a year to run in Colorado compared with an electric water heater.
Estimates for a typical Colorado home, from EIA household energy data and Colorado fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Once your water heater is leaking from the tank itself, it needs to be replaced, not repaired. Look for rust-colored water, a puddle at the base, or moisture on the floor around it. Age matters too, and so does how it has been running, so a unit that is struggling, running out of hot water sooner than it used to, or making rumbling noises from sediment buildup, is worth replacing before it fails outright. A water heater that fails usually does it without warning, and with winter nights here dropping to 19°F on average, going without hot water is not something you want to plan around.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on whether your current tank has failed. A tankless unit heats water on demand instead of storing it, so you get a continuous supply and never run out mid-shower. It also takes up less space than a tank sitting in a closet or utility room. The tradeoff is that installing one often means changes to the gas line, venting, or electrical setup, since a tankless unit has different requirements than the tank it replaces. A contractor can look at your home and tell you what switching would actually involve.
- What changes when you install a tankless water heater?
- The biggest change is what feeds the unit. Tankless heaters draw more gas or electricity at once than a tank does, because they heat water instantly rather than keeping a tank warm around the clock. That often means a larger gas line or a dedicated electrical circuit, depending on the fuel type. Venting changes too, since tankless units typically vent differently than a standard tank. None of this means your home cannot handle one, it just means the installation involves more than swapping one unit for another, and a contractor needs to check the gas line, venting, and electrical before the job is priced.