Asked by: Xaime Grondmann
asked in category: General Last Updated: 4th February, 2020

What does priority mean on tankless water heater?

Press the “Priority button” on the temperature controller. The green Priority light will glow indicating that this controller is controlling the temperature and that the Rinnai Tankless Water Heater is ready to supply hot water. The tankless water heater can deliver water at only one temperature setting at a time.

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Keeping this in consideration, why does my tankless hot water heater go cold?

Another problem that tankless water heaters can run into is that of a cold water sandwich—a plumbing term given to sudden temperature fluctuations, when your tankless water heater produces hot and cold water intermittently. This can be caused by: A dirty water filter on the cold water inlet.

Likewise, what are the pros and cons of a tankless water heater? 10 Pros and Cons

  • Pro #1: Instant Hot Water.
  • Con #1: Inconsistent Temperatures.
  • Pro #2: Longer Lifespan.
  • Con #2: Higher Initial Cost.
  • Pro #3: Lower Month-to-Month Costs.
  • Con #3: Limited Hot Water Supply.
  • Pro #4: Space Savings.
  • Con #4: Additional Equipment is Often Necessary.

Keeping this in view, what should tankless water heater be set to?

Usually, when you purchase your tankless water heater you will find that the manufacturer will already have set the thermostat at a temperature of 140 degrees Fahrenheit. That's a common standard. However, for the purposes of most households, there is no need for the temperature to be so high.

Do tankless water heaters take longer?

Gas-burning tankless water heaters should operate for 20 years or more, two or three times longer than tank-type heaters. Tankless electric units have shorter life spans, on the order of 7 to 10 years.

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