ᐅ Heat loss in hot water supply between the heating system and the bathroom: 40%

Hello everyone,

I noticed that out of 65°C (149°F) in the water heater, only 40°C (104°F) reaches the bathtub, so about 40% is lost over a distance of 10 meters (33 feet). I would like to reduce the heat loss in the hot water pipe between the heating system and the bathroom to nearly zero. The pipe is insulated with both foam and glass wool around the foam. Is there an insulation for hot water pipes that greatly limits heat loss? I would like to keep the temperature setting as is due to bacteria concerns and then cool down to the desired temperature with cold water when taking a bath.

Measured at the hot water connection directly or after a mixing valve?

I assume the latter, either with a maximum limit or that water is always being mixed.

Or just for fun, turn off the cold water in the bathroom and see if the temperature stays the same.

Hello,

thank you for the responses. No cold water is added to the hot water.