Alpen High Performance Windows & Doors in Anchorage, Alaska

At Neighbors Windows & Doors, we proudly offer Alpen High Performance Products (HPP) to homeowners and builders in Anchorage and throughout Alaska. Manufactured in the USA, Alpen HPP energy-efficient windows and doors are engineered to withstand extreme climates, making them ideal for the Alaskan environment.

Alpen Zenith fiberglass windows are true fiberglass, designed from the outset for Arctic climates. Constructed with pultruded fiberglass, a material known for its stability, durability, and resistance to thermal stress, Alpen Zenith series windows will not warp, swell, or degrade the way other composite frames can.

Alpen Zenith windows feature up to quad pane glass, delivering industry-leading thermal performance — up to R-10 for fixed windows and U-values as low as 0.10.

Why choose Alpen Zenith versus a fiber composite window?

• Performance: Fiber composite frame designs, while marketed as efficient, are usually only designed for double pane glass and achieve performance that typically tops out around R-4, which doesn’t come close to cold-climate efficiency targets.
• Strength: Fiberglass frames are significantly stiffer, more structurally robust, and more stable than fiber composite, vinyl, or wood.
• Lifespan: Fiberglass frames typically last 40-50 years or longer with minimal maintenance. Fiber composite and vinyl frames have a more limited lifespan of 20-30 years in most climates.

Serving Anchorage and Beyond
As Alaska’s trusted Alpen HPP dealer, Neighbors Windows & Doors is committed to providing high-quality, energy-efficient window and door solutions tailored to the unique needs of Alaskan homes. Our expert team is here to guide you through the selection and installation process, ensuring your satisfaction every step of the way.

Contact us today to learn how Alpen Zenith fiberglass windows can transform your home!

Why Choose Alpen HPP?

1. Unmatched Energy Efficiency
Alpen’s triple-pane and quad-pane glass technologies deliver superior insulation, achieving NFRC-certified ratings up to R-10 for fixed windows and R-8.3 (U-0.12) for operable windows. These high-performance windows exceed ENERGY STAR® Most Efficient criteria, helping you reduce energy costs and maintain indoor comfort year-round.

2. Built for Harsh Climates
Tested in some of the most demanding environments, Alpen windows and doors feature fiberglass and fiber-reinforced uPVC frames that resist warping, fading, and weathering. Their superior air and water resistance ensures durability and performance, even in Alaska’s challenging conditions.

3. Passive House Certified
Alpen was the first U.S. window manufacturer to achieve dual certification from both the Passive House Institute US (PHIUS) and the Passive House Institute (PHI).Their products are designed to meet the rigorous standards of Passive House construction, promoting energy efficiency and sustainability.

4. Customizable Designs
Alpen offers a wide range of window and door styles, including casement, awning, fixed, tilt-turn, and sliding options. With various colors, finishes, and hardware choices, you can tailor your windows and doors to match your home’s aesthetic and functional needs.

5. Enhanced Indoor Comfort
Designed to minimize condensation and mold growth, Alpen windows contribute to healthier indoor air quality. Their sound attenuation performance, with ratings up to STC-45, ensures a quieter, more comfortable living environment.

6. Sustainable and Low Maintenance
Alpen’s commitment to sustainability is evident in their use of durable, low-maintenance materials with low embodied carbon. Their windows and doors are designed for longevity, reducing the need for frequent replacements and contributing to a smaller environmental footprint.

Featuring fiberglass frames, the Zenith Series offers exceptional durability and energy efficiency. These windows are ENERGY STAR® Most Efficient certified and DECLARE label “Red List Approved,” making them a top choice for eco-conscious homeowners.

• All-fiberglass pultruded frame provides durability, longevity and strength
• Custom sizes built-to-order with no additional lead time or extra cost
• AAMA Gold Label certified performance
• Multiple glass options for customized thermal and solar performance tuning
• Three layers of compression weatherstripping and single lever active multipoint lock create impenetrable seals against air, dust and water
• Expansive color pallet of durable enamel paint finishes
• Passive House Certified in multiple Performance Series
• Full Lifetime Warranty for residential projects

Find more information including datasheets, warranties, specifications, and brochures on the Alpen HPP site: https://www.thinkalpen.com/zenith-residential-windows

The Alpen Tyrol Series windows are a fusion of European design and American manufacturing, offering exceptional energy efficiency and durability. Crafted with fiberglass-reinforced uPVC frames, these windows are ideal for homeowners in cold climates like Alaska, seeking both performance and aesthetic appeal.

• Superior Thermal Performance: Achieves full-frame R-values up to R-11 (U-0.09) for fixed windows and R-8.3 (U-0.12) for operable windows, surpassing ENERGY STAR® and Passive House standards. ​
• Advanced Glazing Options: Available with triple or quad-pane AlpenGlass™ IGUs, offering center-of-glass R-values up to R-15 (U-0.066) for optimal insulation. ​
• European Tilt-Turn Functionality: Features dual-action operation for versatile ventilation and easy cleaning.​
• Durable Frame Construction: Fiberglass-reinforced uPVC frames eliminate the need for steel reinforcement, reducing thermal bridging and enhancing structural integrity. ​
• Low Air Infiltration: Engineered to achieve air infiltration rates as low as 0.01 CFM/sq. ft., ensuring airtight performance. ​

Find more information including datasheets, warranties, specifications, and brochures on the Alpen HPP site: https://www.thinkalpen.com/tyrol-residential-windows

AlpenGlass represents the forefront of insulated glass units (IGUs), delivering exceptional energy performance through innovative thin-glass technology. Designed for seamless integration into standard window frames, AlpenGlass offers a practical solution for enhancing thermal insulation without compromising on design or adding significant weight.

Key Features:

• High R-Values: Achieves R-values up to R-15, providing superior thermal insulation compared to traditional double-pane windows.
• Lightweight Design: Utilizes ultra-thin glass panes (as thin as 0.5 mm) to reduce overall weight, facilitating easier installation and compatibility with existing window frames.
• Energy Efficiency: Incorporates suspended coated films and inert gas fills (e.g., krypton, argon) to minimize heat transfer, enhancing indoor comfort and reducing energy costs.
• Versatile Configurations: Available in various sizes, thicknesses, and coatings to meet diverse architectural and performance requirements.
• Made in the USA: Designed, developed, tested, and manufactured domestically, ensuring quality and supporting local industries.

Benefits for Homeowners and Builders:

• Enhanced Comfort: Improved insulation leads to more consistent indoor temperatures and reduced drafts.
• Noise Reduction: Multi-pane construction helps dampen external noise, creating a quieter indoor environment.
• Condensation Control: Advanced glazing reduces the likelihood of condensation, protecting window frames and indoor air quality.
• Sustainability: By improving energy efficiency, AlpenGlass contributes to lower carbon footprints and supports green building initiatives.

Installation for new construction and renovation or replacement projects for your home or business is also available. Our installation crews are our own staff, are well trained and equipped, and take great pride in their work. We back all of our work with a three year installation warranty. Read more about our window and door installation services here.