Passive House Windows & Doors

Unsurpassed performance, uncompromising function and beauty.

Zola has supplied more US Passive House projects than any other window manufacturer.

Zola created the first Passive House window—ZNC™—to be certified by both PHIUS and PHI, and has led the North American high performance window industry since the inception of the Passive House movement here.

When you choose Zola for your project, you are choosing a knowledgeable team with unparalleled expertise in high performance fenestration.

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Sofa House
kt814
Jackson Hole Contracting
Passive House Windows & Doors

ZNC™️ is the First Passive House Window to be Certified by both PHI and PHIUS

Boasting performance that is approximately four times better than typical domestic triple-glazed windows, ZNC™ (“Zola No Compromise”) represents the pinnacle of fenestration innovation.

ZNC is the first window to be certified by both Passive House Institute (PHI) and Passive House Institute US (PHIUS).

Passive House Institute logoPassive House Institute US logo

Trusted by Certified Passive House Consultants Nationwide.

The price is feasible, the windows are stunning, and the performance is everything a certified Passive House consultant could hope for.
- TESSA SMITH
Island Passive House
The Artisans Group
Passive House Windows & Doors

Zola's Passive House Lines

We offer an unrivaled selection of Passive House window lines, available in Clad Wood, Aluminum, uPVC, and Wood frames. Our SDH™️ Simulated Double Hung windows are ideal for historic Passive House retrofits.

R-11 Zola Arctic™ Passive House window rendering

R-11 • Zola Arctic™

The highest performing window that money can buy, Zola Arctic™ combines a timber-aluminum frame with quad glazing, swisspacer warm edge technology, and generous foam insulation to deliver unparalleled performance in a broad range of climates, including the extremely cold.

Visible Sash icon
Visible Sash
11
R-Value
4
Glazing
Layers
3
Low-E
Coatings
64
% of Visible Light Transmitted
(Clarity)
5
Number of
Seals
60+
Expected
Service Life
in Years
R-9 Zola ZNC™ Passive House window rendering

R-9 • ZNC™

Boasting performance that is approximately four times better than typical domestic triple-glazed windows, ZNC™ ("Zola No Compromise") represents the pinnacle of fenestration innovation.

Visible Sash
9
R-Value
3
Glazing
Layers
2
Low-E
Coatings
71
% of Visible Light Transmitted
(Clarity)
5
Number of
Seals
60+
Expected
Service Life
in Years
R-8 Zola ThermoPlus Clad™ Passive House window rendering

R-8 • ThermoPlus Clad™

For projects that require greater performance than the popular Thermo Clad™ line, Zola offers the ultra high-performance ThermoPlus Clad™ line of windows and doors.

Visible Sash
8
R-Value
3
Glazing
Layers
2
Low-E
Coatings
71
% of Visible Light Transmitted
(Clarity)
4
Number of
Seals
60+
Expected
Service Life
in Years
R-8 Zola Thermo Alu90™ Passive House window rendering

R-8 • Thermo Alu90™

Thermo Alu90™ combines a Passive House level frame with the thin profile of aluminum for the modern high performance project. The frame is designed to support very large window sizes. Made in standard triple-pane, low-iron glass.

Visible Sash
8
R-Value
3
Glazing
Layers
2
Low-E
Coatings
73
% of Visible Light Transmitted
(Clarity)
3
Number of
Seals
60+
Expected
Service Life
in Years
R-8 Zola Thermo Plus uPVC™ Passive House window rendering

R-8 • ThermoPlus uPVC™

The foam-insulated ThermoPlus uPVC is the highest performing choice for economical Passive House, net zero projects, and large multifamily developments. Features an 85mm deep fiberglass-reinforced frame and steel-reinforced sashes.

Visible Sash
8
R-Value
3
Glazing
Layers
2
Low-E
Coatings
73
% of Visible Light Transmitted
(Clarity)
2-3
Number of
Seals
25+
Expected
Service Life
in Years
R-7.5 Zola Thermo AluMinima™ window rendering

R-7.5 • Thermo AluMinima™

The slimmest design in Zola’s aluminum series, Thermo AluMinima combines high thermal performance with the minimalist elegance reminiscent of old steel profiles. Available in both double and triple-pane glass.

Visible Sash
7.5
R-Value
2 or 3
Glazing
Layers
1
Low-E
Coatings
73
% of Visible Light Transmitted
(Clarity)
3
Number of
Seals
60+
Expected
Service Life
in Years
R-7 SDH™ Simulated Double Hung Passive House window rendering

R-7 • Thermo Wood™

Zola Thermo Wood™ is a classic choice for high performance homes. With R-11 glass standard in an industry-leading 18mm spacer thickness, Thermo Wood can be offered in extremely large sizes.

Visible Sash
7
R-Value
3
Glazing
Layers
3
Low-E
Coatings
73
% of Visible Light Transmitted
(Clarity)
3
Number of
Seals
50+
Expected
Service Life
in Years
R-7 Zola Thermo Wood™ window rendering

R-7 • SDH™

American Heritage SDH™️ windows combine a lower tilt & turn assembly with a fixed upper to provide outstanding thermal and acoustic performance, modern functionality, and the style and proportions of a traditional double hung window

Learn more here.
Visible Sash
7
R-Value
3
Glazing
Layers
2
Low-E
Coatings
73
% of Visible Light Transmitted
(Clarity)
3
Number of
Seals
60
Expected
Service Life
in Years

The Passive House Method

Revolutionary efficiency, comfort, and indoor environmental quality.

The Passive House Method is the standard bearer for high performance design and construction around the world. It is grounded in building science, advanced energy modeling, and this following suite of design principles:

  • High Performance Windows and Doors

    To capture solar gains, dramatically reduce heat loss, and maintain the moderate interior surface temperatures vital to occupant comfort.

  • Continuous Insulation

    A warm sweater to wrap the building’s four walls, foundation and roof, free of gaps or “thermal bridges”.

  • Airtight Envelope

    To eliminate chilly drafts and moisture-bearing air leaks into building assemblies.

  • Balanced Fresh Air Ventilation

    A high performance H/ERV ventilation system supplies filtered fresh air, exhausts stale air, and recovers heat and humidity.

  • Passive Solar Management

    To exploit the sun’s energy in the winter and shield from it during the summer.

Sunshine Canyon House
fuentesdesign
Natural Homes, LLC

Can You Spot the
Zola Windows?

High performance windows mean no drafts, no condensation, and no feeling cold—even right next to big glass. Can you spot which Brooklyn row house sports Zola windows? See how those blue windows contrast with the bright red of the home’s old entry door?

Passive House Windows & Doors

FSC®-Certified Options

Zola offers window and door frames made of sustainably harvested wood certified by the Forest Stewardship Council®, the standard bearer in third-party verification of sustainable forestry.

Forest Stewardship Council® logo
Cedar House
Artisans Group