Do the gutter guards that rely on the surface tension of water really work?

What you heard is correct. Although the water standing in gutters and overflowing onto the ground does not directly increase your utility bills, it can indirectly reduce your home's efficiency. If the wall insulation gets wet from bad gutters, its R-value drops to almost nothing.

Englert Gutter guards, like this one, help keep leaves and other debris from clogging gutters and causing them to overflow. In many climates during the summer, excessive humidity in the air creates more discomfort than does the heat. When you are uncomfortable, you typically set the air-conditioner thermostat lower, which uses more electricity.

Overflowing gutters allows the ground around the house to become saturated and this increases the humidity level in the nearby air. The type of gutter guards you are referring to do work. I installed them on my own home (www.dulley.com/house) several years ago and there have been no clogs or overflowing problems.

These can be installed as add-ons to existing gutters ... more.

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