Duct Insulation R Value Chart

Blanket duct wrap is applied separately from the actual ducting process whereas insulated flexible duct comes with the insulation already wrapped.

Duct insulation r value chart.

Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Our r value guide to rigid insulation includes the doe s recommended insulation by zone chart r value calculator and base building material r values chart. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. Recommended home insulation r values.

Thermal resistance r value definition. An r value is an assigned number derived from a specific testing procedure or calculation to determine a materials or building assemblage resistance to conductive heat transfer. Both types of insulation are available in a variety of thicknesses and r ratings. Insulation level are specified by r value.

The table below shows what levels of insulation are cost effective for different climates and. For most applications a rating of r 6 or better will provide the best efficiency and long term cost effectiveness. The united states department of energy defines thermal resistance also known as r value as the insulating material s resistance to conductive heat flow put more simply the r value measures the effectiveness of the insulation material. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

A material with a higher r value is a better insulator. R value is a measure of insulation s ability to resist heat traveling through it. Gas oil r 6 to r 11 r 2 to r 11 heat pump or electric resistance r 6 to r 11 r 2 to r 11 a. Insulation is also effective at reducing cooling bills.

What is an r value. Operating costs are controlled due to reduction of heat loss or gain through duct walls. The common denominator among varieties of insulation is the r value. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and.

Adapted from modera et al impacts of residential duct insulation on hvac energy use and life cycle cost to consumers ashrae transactions at 96 13 4. 1 844 446 7858 my account. The higher the r value the better the thermal performance of the insulation. This helps maintain insulation effi ciency and reduces the likelihood of stained.

For example if you have a type of insulation. As a benchmark one inch of solid wood has an r value of 1.