Techniques for Insulating Pipes DIY Pipe Insulation - Knowledge Hub

Insulating hot water pipes lessens heat loss and can increase the water temperature by as much as 4°F, which in turn means you will be able to lower your boiler
Insulating hot water pipes lessens heat loss and can increase the water temperature by as much as 4°F, which in turn means you will be able to lower your boiler's temperature setting. Insulated pipes furthermore deliver hot water faster than uninsulated pipes, so you do not have to wait for the water to heat up when you turn on a tap. Having instant hot water helps save water, which these days is essential with many countries experiencing water shortages.
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For an economical and energy efficient way to help prevent your pipes from freezing consider using the Armacell Armaflex 6 ft. This rubber insulation helps protect your copper and iron pipes against mold and condensation. It is flexible for easier installation.

Armaflex 1-3/8 in. x 1/2 in. Rubber Pipe Insulation - 120 Lineal Feet/Carton APT13812

How to Insulate Pipes