Water Heater Installation in Greeley, CO
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Eight months of heat and a sizing rule that isn't one number
Weld County homes need heat from October through May, eight months a year. That means eight months where your water heater is working alongside a furnace that's also running hard, both drawing on the same gas line or electrical panel. Winter nights here average 16°F from December through February, which is when a tank that's already borderline tends to fall behind.
The federal efficiency minimum for a new storage water heater isn't a single number. It's a formula based on the tank's rated volume, applied separately across four draw patterns, so the minimum for your tank depends on its size. Two households with different hot water needs can be looking at two different minimums even if they're buying what seems like the same kind of heater. Getting the size right isn't optional here. It's how the unit meets the standard it's required to meet.
- 16°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?
- The clearest sign is water that comes out lukewarm or runs out fast, especially if that is new behavior. Rust colored water, a tank that is damp or rusted on the outside, or a popping and rumbling sound from sediment built up in the bottom are all signs the tank itself is failing rather than just needing a repair. A leak at the tank itself, as opposed to a fitting or valve, means replacement, not repair, since the tank cannot be patched. If your water heater is old and showing any of these signs, a contractor can tell you whether it is worth repairing or time to replace it.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on whether your current tank is failing. A tankless unit heats water on demand instead of storing it, so you do not run out of hot water partway through back to back showers the way you can with a tank. It will not heat water during a power outage, same as most storage heaters unless they run on a standing pilot, so that is not a reason to switch either way. A contractor can walk through your home's hot water use and tell you whether tankless makes sense for the house you actually have.
- What changes when you install a tankless water heater?
- The biggest change is that hot water is no longer stored, it is heated as it passes through the unit when you turn on a tap. The unit needs enough gas or electric supply to heat water at that moment, which is different from what a storage tank needs, so the gas line, electrical circuit, or venting may need to change during installation. Tankless units also take up much less space and mount on a wall instead of sitting on the floor. A contractor will need to look at your home's existing gas, electric, and venting setup to know what has to change for your specific installation.