7 ms·
No, it preheats the cold water connected to your shower. Warmer cold water means you need less hot water to achieve the same temperature in the shower.
by pg314 3y ago
No, it preheats the cold water connected to your shower. Warmer cold water means you need less hot water to achieve the same temperature in the shower.
- megak1d 3y agoAh yes, that’s much neater and more localised. Thanks