All water heaters (tankless or tank storage) are rated as to their “Universal Energy Factor” (UEF). This is a measure of how energy efficient that particular water heater is. It is also one of the …
On-demand water heater reviews, tips and guide
All water heaters (tankless or tank storage) are rated as to their “Universal Energy Factor” (UEF). This is a measure of how energy efficient that particular water heater is. It is also one of the …