Water Heater Installation in Houston, TX
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What a Harris County water heater has to handle
Houston winters are mild. Heat only runs November through February here, and winter nights average 45°F, so a water heater isn't fighting the cold most of the year. The bigger risk is the power going out. A third of Texas households lost power for 24 hours or more in 2024, and the county has logged 178 damaging wind events over the past ten years. Most tanks come back on by themselves once power returns. A standing pilot model never needed the power in the first place.
Whatever size tank goes in, it has to clear a federal efficiency minimum, and that minimum is not one number. It is set by a formula tied to the tank's rated volume, applied separately across four draw patterns, so two tanks of different sizes can face different bars.
- 45°F
- the average winter night, and colder incoming water means longer heating
- 4 months
- November through February, the months homes here need heat
- 33%
- of Texas 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 $290 a year to run in Texas compared with an electric water heater.
Estimates for a typical Texas home, from EIA household energy data and Texas fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- The tank's age is the first thing to check on the label, since storage water heaters wear out over time rather than failing all at once. If it's leaking from the tank itself rather than a fitting, that's the end, because the tank can't be repaired. Rusty hot water, a tank that rumbles or takes longer to heat than it used to, or a pilot or igniter that's failing more often are all signs the unit is wearing out rather than having a one-time problem. A licensed contractor can tell you whether what you're seeing is a simple fix or the tank itself giving out.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on which one is better in every case. A tankless unit heats water only as you use it, so you don't run out during a long shower or back to back loads of laundry, and it doesn't sit there heating a tank of water all day. A storage tank costs less to install and is simpler to work on when something goes wrong. Either one needs a contractor to size it to your home and check what your gas line or electrical panel can support before installing it.
- What changes when you install a tankless water heater?
- The biggest change is that hot water becomes limited by flow rate instead of tank size. You can run water at more than one point at once up to what the unit is rated for, but past that the water gets cooler rather than running out entirely like a tank does. Tankless units also need a gas line sized for their higher burner output, or a dedicated electrical circuit if it's an electric model, so the gas or wiring at the house often has to change too. Venting is different as well, since a tankless unit vents differently than a tank does, and a contractor will check that as part of the install.