Sliding Door U Value

The range is from 0 to 1.

Sliding door u value.

Andersen doors and windows that use low e4 and low e glass have a u factor between 0 27 and 0 30. The liniar energyplus range contains 6 chambers and can achieve a u value as low as 0 8 w m2k with the correct glazing specification. This tool provides some of the most common options on windows and doors and related nfrc certified values. Products that use low e4 and low e glass include certain 200 series fixed units and tilt windows 400 series gliding windows roof windows and skylights and several models of andersen architectural window.

The u value is a measure of heat transfer across a building material. This is different than r value that would be used to determine the energy efficiency of just the window pane thus a window with a u value of 1 is more energy efficient than an window with a u value of 5. Look for a low shgc in a climate that mainly requires cooling and a high shgc in a climate that requires heating. The range is from 0 00 2 00.

Doors lose heat to the outside in the winter and gain heat from the outside during the summer. Illustrations of all energy star window types. The label shows the solar heat gain coefficient shgc and u factor for the door. These sliding glass patio doors represent the leading edge in energy efficient products this year.

Nfrc u factor ratings however represent the entire window performance including frame and spacer material. U values are used to determine the insulating efficiency of the window and all of its components. 1 insulated glass can reduce the u factor by up to 40 by better preventing interior heat from escaping to the outside. Depends on size temperature and components of the door.

To access those tables select the individual product of interest and scroll down to the professional resources section. For windows skylights and glass doors a u factor may refer to just the glass or glazing alone. Shgc measures how well a product keeps out solar heat. U factor is the rate at which a window door or skylight conducts non solar heat flow.

Most efficient recognizes a subset pdf 701kb. With a quality double glazed unit approximate u values are 1 2wm2k or alternatively a window energy rating wer of a. It is typically used as a measure of heat loss from inside your home to the outside and could be a measure of thermal performance for your walls roof and floors as well as your aluminium windows and doors. Energy performance data for select combinations of options is available in table format on each product page.

Look for a low u factor.