Makrowin Wood Windows

Credit: European Architectural Supply, Inc.

What makes this product green?

  • Reduces heating and cooling loads
  • Certified wood


Makrowin wood windows are made from European spruce, oak, and mahogany, and can be double- or triple- glazed. With aluminum claddingMaterials used on the roof and walls to enclose a house, providing protection against weather. on the exterior, whole-window U-values range from 0.12 to 0.13 with a center of glass U-factorMeasure of the heat conducted through a given product or material—the number of British thermal units (Btus) of heat that move through a square foot of the material in one hour for every 1 degree Fahrenheit difference in temperature across the material (Btu/ft2°F hr). U-factor is the inverse of R-value. of 0.88. Wood certified by FSCNonprofit organization that promotes forestry practices that are sustainable from environmental and social standpoints; FSC certification on a wood product is an indicator that the wood came from a well-managed forest. is available upon request. The highest-performing Makrowin window, the MW88G2, meets the strict energy and air-tightness requirements of the PassivhausA residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor. Developed in the early 1990s by Bo Adamson and Wolfgang Feist, the standard is now promoted by the Passivhaus Institut in Darmstadt, Germany. To meet the standard, a home must have an infiltration rate no greater than 0.60 AC/H @ 50 pascals, a maximum annual heating energy use of 15 kWh per square meter (4,755 Btu per square foot), a maximum annual cooling energy use of 15 kWh per square meter (1.39 kWh per square foot), and maximum source energy use for all purposes of 120 kWh per square meter (11.1 kWh per square foot). The standard recommends, but does not require, a maximum design heating load of 10 W per square meter and windows with a maximum U-factor of 0.14. The Passivhaus standard was developed for buildings in central and northern Europe; efforts are underway to clarify the best techniques to achieve the standard for buildings in hot climates. Institut and uses cork to insulate the frame. The company claims these windows are the thinnest PHI-certified wood windows at 3.46 inches thick (88mm). In addition to tilt-turn windows, Makrowin also offers a variety of entry, lift-slide, and patio doors.

Manufacturer Information

European Architectural Supply, Inc.
109 Todd Pond Rd.
Lincoln, MA 01773
Phone: 781-647-4432
Fax: 781-207-0788

Listed in: Wood Windows