Water heater insulation blankets cover the exterior of tank-style water heaters. They are designed to prevent standby heat loss on the hot water sitting in the tank. Even with this potential benefit, there are a few considerations to keep in mind. Water heaters come pre-installed with internal insulation. With some models including 2” of foam insulation (at an R-value of 16), manufacturers already take major steps to minimize heat loss. Blankets can also cover important labels, controls, valves, and air passages on the water heater, which creates potential safety hazards. Additionally, many believe that the bulk of heat loss in a gas unit goes out the flue, which reduces the importance of any insulation. Always consult with local and municipal codes before installing a water heater blanket.
(Source: Bradford White)
(Source: Bradford White)
