Passive House Institute US


Kolbe products are continually designed to meet or exceed today's stricter building codes and standards for energy efficiency. Kolbe is proud to offer a wide range of VistaLuxe® Collection and Ultra Series windows and doors that have been verified by the Passive House Institute US (PHIUS). Our range of certified products means that American-made windows and doors for an entire passive house project are available from one manufacturer. 

Our PHIUS-verified products have the same attention-to-detail and superior quality for which Kolbe is known. Plus, these products are available with the multitude of options you've come to expect from Kolbe. We are pleased to offer windows and doors that meet the strict PHIUS guidelines, so that we can help in the commitment to meeting high performance building principles.

Download a list of Kolbe products that have been PHIUS verified

NOTE: Passive House performance criteria are dependent upon a number of factors, including LoE coatings, lite divisions, and elevation placement.
The PHIUS Certified Data for Windows program reviews manufacturer-supplied specifications for window products and recommends products that are suitable for passive house by climate zone. 

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PHIUS Certified Products

The PHIUS Certified Data for Window Performance Program is your comprehensive guide to high-performance windows. The following products are based on different climate zones. View the US Climate Region Map 

VISTALUXE COLLECTION FLUSH & ACCENT PLUS STYLES* ZONE 2 EAST ZONE 2 WEST ZONE 3 MARINE SOUTH
Crank-Out Awnings X     X
Crank-Out & Picture Casements X     X
Direct Sets X X X X
2-1/8" Inswing Doors       X
ULTRA SERIES*   ZONE 2 EAST ZONE 2 WEST ZONE 3 MARINE SOUTH
Crank-Out EP Awnings X     X
Crank-Out & Picture EP Casements X     X
Casement EP Direct Set Transoms X X X X
Beveled EP Direct Sets X X X X
Ogee EP Direct Sets X X X X
Majesta Double Hung Studio & Transoms X     X
Tilt-Turn & Direct Sets X     X
2-1/4" Inswing Doors       X

*Products must have triple pane glass filled with argon gas and a combination of LoE²-270/LoE-180 coatings or LoE³-366/LoE-180 coatings.

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