Water Heater Installation in San Marcos, TX
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What a water heater in San Marcos has to deal with
Winter nights here average 41°F from December through February, and homes need heat from November through March. Your water heater has to bring cold groundwater up to temperature through all of that, not just on the coldest nights.
Storms are the bigger risk to it. Hays County has seen 8 winter storms and 36 damaging wind events over the past ten years, and across Texas a third of households went at least 24 hours without power in 2024. A gas water heater with a standing pilot keeps working through an outage. One with electronic ignition does not, and neither does an electric tank. The federal efficiency minimum for a new storage water heater is not one fixed number either. It is set by a formula based on the tank's rated volume, applied differently depending on how a household draws hot water, so two tanks of different sizes can carry different minimums.
- 41°F
- the average winter night, and colder incoming water means longer heating
- 5 months
- November through March, 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 clearest sign is age. Most tank water heaters wear out after enough years in service, and past a certain point the tank itself is more likely to fail than any part inside it. Watch for water pooling at the base, which usually means the tank is rusting through from the inside and won't stop. Rusty or metallic-tasting hot water, a burning smell, or hot water that runs out faster than it used to are also signs the tank is wearing out rather than something a repair will fix. If the unit is still fairly new and the water is clean, a repair to a heating element or thermostat is often enough.
- Should I switch to a tankless water heater?
- It depends on what you want from your hot water and what your home can support. A tankless unit heats water only as you use it, so you get continuous hot water instead of running out after a long shower or filling a tub. It takes up much less space than a tank and doesn't hold standing water that can leak or fail. But switching usually means changes to the gas line, venting, and sometimes the electrical circuit, since tankless units draw more power at once than a tank does. A contractor can look at the existing gas and electric setup and say what switching would actually involve in that house.
- What changes when you install a tankless water heater?
- The biggest change is what feeds the unit. Tankless heaters need a larger gas line than most tank heaters use, because they heat water fast on demand rather than slowly over time, and the existing line in an older home may need to be upsized. Venting changes too, since tankless units vent differently than a tank and often need new venting run to the outside. Some models also need a dedicated electrical circuit for their controls and ignition. None of this is a sign something is wrong with the home. It's just what the switch requires, and a contractor will check the gas line size and venting path before giving a plan.