Tankless Water Heater on Yom Tov
What does the Rav say about using a tankless hot water heater on Yom Tov? Our house has one installed and we have not used the hot water on Yom Tov.
Thank you so much
Since in such systems opening the hot water immediately and directly ignites the fire to heat the water, this may not be used on Yom Tov. It is prohibited to start a new fire on Yom Tov.