Considerations For Your Tankless Water Heater

Learn More

Things To Consider With Your Tankless Water Heater

Choosing a tankless water heater is only the first step. Once you decide a tankless system is right for your home, there are three practical questions that deserve just as much attention:


What size tankless water heater do I need? How often does it need maintenance? And what does Kansas City's hard water mean for its performance?


These details can make a significant difference in how well your system serves your household over time. JF Denney installs and services Rinnai tankless water heaters throughout the Kansas City area.

What Should Be Considered With A Tankless System?

There are a few things you should consider when choosing the correct tankless water heater for your family.

Start With The Right Size.

Think About Hard Water

Consider Needed Maintenance

Consider Flow Rate

Frequently Asked Questions

  • 1. How do I know what size tankless water heater I need?

    Tankless water heater sizing depends primarily on the amount of hot water your household may use at the same time and the temperature rise required to heat your incoming groundwater.

  • 2. How often should a tankless water heater be flushed?

    Rinnai recommends flushing its tankless water heaters at least once a year. Homes with harder water may require attention more frequently depending on the amount of mineral buildup.

  • 3. Does hard water affect a tankless water heater?

    Yes. Minerals in hard water can contribute to scale buildup inside the heat exchanger. Regular maintenance can help address buildup, while appropriate water treatment can help reduce the minerals entering the system.

  • 4. Do tankless water heaters need more maintenance than traditional water heaters?

    Tankless systems have different maintenance requirements than traditional tank water heaters. Regular flushing is an important part of maintaining a tankless system, particularly when mineral buildup is a concern.