Tankless Water Heater Houston TX

While most tankless units have internal ceramic heaters for freeze protection they require continuous electrical power to function. During extreme events like Winter Storm Uri if Houston experiences a power outage, the water inside the unit can freeze and crack the heat exchanger leading to expensive repairs. Local homeowners should know how to manually drain their unit if a hard freeze is predicted and power is at risk.

For a standard 3-4 bedroom home in Houston a unit with a flow rate of at least 7 to 9 gallons per minute (GPM) is usually sufficient. Because Houston’s groundwater temperature is relatively warm (averaging 65-70°F), tankless units don't have to work as hard to reach 120°F compared to northern climates. This high 'inlet temperature' allows many Houstonians to run multiple showers and appliances simultaneously with a single high efficiency unit.

Houston homeowners can typically expect to save 20% to 34% on their water heating costs by switching to a tankless system. Since these units only heat water on demand they eliminate the 'standby heat loss' associated with keeping 40-50 gallons of water hot in a tank 24/7. In the hot Texas summer, this also means your water heater isn't radiating excess heat into your attic or garage, slightly reducing the load on your air conditioner.