Replacement Windows High Altitude

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Replacement Windows High Altitude

Explore issues related to Replacement Windowsat high altitude, capillary tubes, seal failure, and much more.

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Windows At 6000 Plus Feet

I am writing from Colorado. On your site, a respondent wrote the following concerning Ameramax windows. Amerimax windows are made here in Colorado. The main selling point for me is that they are filled with argon gas right here - windows filled at lower elevations have major pressure build up when they are shipped here.

Is it true that windows made at much lower elevations lose their efficiency at 6,000 feet elevation, that the air or argon leaks out due to the pressure differential? A local window replacer here makes that claim, and will not put in the Marvin Infinity (my first choice) for that reason. Only Colorado-made windows.

Thanks for whatever advice you may have.

Jon - Homeowner - from 2016

[Site Editor's Response]

Jon, there is an issue with the fills that are manufactured at low altitudes and shipped to higher altitudes. The manufacturers try to combat these issues by installing small capillary tubes that help equalize the pressure during the transportation. If it were me, I would certainly inquire as to how often the company has done this and whether there have been any issues in the past.

The gas fills do increase the energy efficiency of a window, but only by about 10% to 15% over normal air, so I would consider not doing an argon fill (I believe many manufacturers won't do the argon fills if the window is going to be shipped above 6000').

Having said all that, my knowledge in this area is admittedly not great. I would recommend finding a few manufacturers who work in higher elevations such as Denver. Give them a call and ask them their recommendations, they are going to have the skinny on what you should and shouldn't do. But as to the argon, I don't think it's going to be the worst thing not to have it since it's just one piece of the energy efficiency within an insulated glass unit.

Tim - Site Editor - from 2016

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