Alpen Window Prices



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Alpen Window Prices

Alpen window prices range from $60 to $90 per square foot for the windows themselves - this does not include the cost of installation. (Find additional window prices by size here.) Alpen HPP is a Colorado based company that specializes in fiberglass windows that emphasize high levels of energy efficiency. The company used to be Serious Windows.

Their fiberglass windows are considered a top quality product, particularly their 725 and 925 series, but they are also some of the most expensive as well. Most consumers will pay roughly 20% to 30% more for the Alpen fiberglass window compared to the Marvin fiberglass windows.

Have a question for our site editors, Dane and Tim? Email them and let them answer your specific project questions. Make sure to include your email address so they can get back to you directly (we never use or sell your email, we promise.)

Read all of our Alpen Windows reviews.


Alpen 525 Windows Costs

The Alpen 525 fiberglass window is the base model offered by Alpen HPP. The 525 gets up to a 5.9 R-value through a number of performance features. With the 5L glass package, the 525 casement achieves a 0.21 U-factor, .23 SHGC and .39 VT and gets some 99% UV blocking. The 525 window is available as a horizontal slider, fixed frame, single or double hung, casement, awning, sliding patio door, half circle, several geometric shapes or as a bay or bow window.

There are a number of consumer options to choose from, including 8 different hardware materials (including an oil rubbed bronze and brushed nickel), 5 simulated divided light designs, as well as an array of paint and/or finish options. This fiberglass window is also available in the 525s series, which adds a new spacer for better performance. The 525s with the upgraded glass package and optional SDLs can achieve an R 6.7. The Alpen 525 window is comparable to Milgard Ultra windows cost.


Allen 525 Windows Prices


Alpen 525 Series Cost

I also recently just got a quote on the Alpen 525 series for $9,000 - $9,400 installed. That's about $2,000 less than the Marvin Infinity, and only about $1,800 - $2,000 more than the Zen Lotus (with a complete full-frame install). I'm hoping for a quote on Milgard Ultra's too.

After reading on your site, I was aware that Zen's were Soft-Lites, but I did not know that Soft-Lite had such a good reputation. Thank you for that.

Mike - Homeowner - from 2016

[Site Editor's Answer]

Mike, Alpen makes a very nice window. I'm not sure it's worth $2K more than the Zen Lotus, but it might be somewhere close. I think I'd have to give the nod to the Zen bid, but again they are close.

Tim - Site Editor - from 2016


Alpen 525 Window Costs

Hi folks, I've been using your site for days now and would love some assistance. I have received 6 quotes from different companies in Longmont, CO and have my 7th in about an hour. Here is the breakdown of companies and quotes. Could you help rank these? I feel like my brain is suffering from information overload from trying to research all these companies and products. Also, we've only just bought the house and lived here 10 days! These are all for 17 windows, all same color and action and includes installation.

Alpen Windows Pricing - 525 Series Fiberglass - $16k
Alpen - The Huntington (Kensington?) Vinyl - $10k
Pella Impervia Fiberglass - $21k
Pella - 250 Series Vinyl - $16k
Zen Nirvana - $11k
Zen Windows Prices - Lotus - $12k

Josh - Homeowner - from 2016

[Site Editor's Response]

Josh, you have a lot of bids here and some very good brands represented. If you really like the fiberglass option and are considering going this route, I would put the Alpen 525 and the Integrity on par with one another. But at roughly $1000 per window, that's a lot of money, they must be big windows. Let me know what you decide!

Dane - Site Editor - from 2016



Allen 725 Windows Prices


Alpen 725 Window Price

The Alpen 725 fiberglass window is the mid range model that gets up to a 7.1 R-value through a triple pane glazing, as well as a number of additional energy saving features. With the 7L glass package, the 725 casement achieves a 0.18 U-factor, .24 SHGC and .38 VT and gets some 99% UV blocking. The 725 window is available as a horizontal slider, fixed frame, single or double hung, casement, awning, sliding patio door, half circle, several geometric shapes or as a bay or bow window.

There are a number of consumer options to choose from, including 8 different hardware materials (including an oil rubbed bronze and brushed nickel), 5 simulated divided light designs, as well as an array of paint and/or finish options. The Alpen 725 window is comparable to the Marvin Integrity prices Pella Impervia cost.



Allen 925 Windows Prices


Alpen 925 Windows Prices

The Alpen 925 fiberglass window is the premium series that gets up to a 9.1 R-value through a quadruple pane glazing, a foam filled main frame, as well as a number of additional energy saving features. With the 9L glass package, the 925 casement achieves a 0.15 U-factor, .22 SHGC and .34 VT and gets some 99% UV blocking. The 925 window is available as a fixed frame, casement, awning, sliding patio door, half circle, several geometric shapes or as a bay or bow window.

There are a number of consumer options to choose from, including 8 different hardware materials (including an oil rubbed bronze and brushed nickel), 5 simulated divided light designs, as well as an array of paint and/or finish options. The Alpen 925 window is comparable to Inline Window prices and Marvin Infinity cost.






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