Water Heater Installation in Rochester, MN
Tell us about the house, and a licensed contractor who covers Olmsted County will get in touch.
Tell us about the job
It takes about a minute.
What Olmsted County winters ask of a water heater
Your water heater works alongside your furnace here, September through May, nine months a year. December through February, nights average 10°F, and incoming water runs cold during that same stretch. A tank has to recover fast to keep up with that.
Power matters too. Minnesota saw 13% of households go at least 24 hours without power in 2024, and the county has logged 36 winter storms and 92 damaging wind events over the past ten years. A gas water heater with a standing pilot keeps making hot water through an outage like that. One with electronic ignition, or an electric tank, needs the power back first. Whatever you install, it has to meet the federal minimum efficiency for its size and type, which is set separately for each tank volume rather than as one number for every heater.
- 10°F
- the average winter night, and colder incoming water means longer heating
- 9 months
- September through May, the months homes here need heat
- 13%
- of Minnesota 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 $360 a year to run in Minnesota compared with an electric water heater.
Estimates for a typical Minnesota home, from EIA household energy data and Minnesota fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- The clearest sign is water that never gets as hot as it used to, or runs out fast even with nobody else in the shower. Rust colored water from the hot tap, or rust around the tank itself, means the tank is corroding from the inside. A puddle at the base or damp spots on the floor around it usually means the tank has started to leak, and once a tank leaks it needs to be replaced, not repaired. Popping or rumbling noises are sediment built up on the bottom of the tank, and while that alone will not force a replacement, it is a sign the tank has been working harder than it should for a while. Most storage tanks last a decade or so, so if yours is getting up there in age alongside any of these signs, it is worth having a contractor look at it before it fails on its own schedule instead of yours.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on one being better than the other. A tankless unit heats water as it passes through, so you are not paying to keep a tank of water hot around the clock, and you will not run out of hot water partway through back to back showers. It takes up much less space than a tank, which matters in a smaller mechanical room or closet. What it will not do is deliver hot water instantly at the tap, there is still a short wait while the cold water in the pipe clears out, same as with a tank. A contractor can look at your gas line, your venting, and your household's hot water use and tell you whether tankless makes sense for your house specifically.
- What changes when you install a tankless water heater?
- The biggest change is what the unit needs to run. A tankless water heater draws more gas at once than a tank does, so it often needs a larger gas line than what is already there. It also vents differently, usually through its own dedicated vent rather than sharing a flue with a furnace, and that vent has to be run to the outside. Because the unit mounts to a wall instead of sitting on the floor, where it goes in the house can change too. None of this means a tankless unit will not fit in your home, it means the installation involves more than swapping one unit for another, and a contractor needs to check the gas line and venting before the job starts. As with any water heater replacement here, the work needs a permit from the local building office and an inspection once it is done.