If you live in Houston and have a tankless water heater, you may be wondering how often it needs to be flushed. Regular maintenance is key to keeping your unit efficient and extending its lifespan. At Texans Water Heaters, we specialize in tankless water heater installation and maintenance, and we’re here to answer one of the most common questions we get from local homeowners.
Why Flushing a Tankless Water Heater Matters Unlike traditional water heaters, tankless models heat water on demand. Over time, mineral buildup (especially from Houston’s hard water) can clog the heat exchanger, reducing efficiency and potentially damaging your system. Flushing removes this buildup and helps prevent expensive repairs.
How Often Should You Flush? In Houston, we recommend flushing your tankless water heater once a year. This annual service helps keep your unit running smoothly, especially if you:
Have hard water (which is common in Houston)
Use a lot of hot water daily
Don’t have a water softener system installed
Some manufacturers like Navien and Rinnai even require annual flushes to maintain warranty coverage.
What Happens During a Flush? During a professional flush, we:
Power down the unit
Disconnect and isolate the water lines
Circulate a descaling solution through the system
Rinse thoroughly with clean water
Inspect for any signs of wear or leaks
The process takes about 45 minutes to an hour and can be scheduled as part of a routine annual service.
DIY vs. Professional Flushing While some homeowners attempt a DIY flush, we recommend hiring a licensed professional. Improper flushing can void warranties, damage components, or result in an incomplete cleaning. Texans Water Heaters offers affordable, same-day flush services in Houston and surrounding areas.
Schedule Your Flush with Texans Water Heaters We’ve been serving Houston homeowners for over 10 years and know the ins and outs of every major tankless brand. Whether you need a flush, a repair, or a full replacement, our expert team is ready to help.
Call us today or book online to schedule your tankless water heater flush!
