Dayle1 wrote:
The option cost for DP windows is at least $1000-$1500, in many cases even more. Full replacement cost is likely twice that. Not sure if the benefit is worth that much, only you can decide.
On my last unit with single pane windows, I added a 2nd pane, but only on the fixed portion of each window. If you have large fixed glass areas with small vent glass, it will provide some benefit. I used 3/16 inch plexiglas and a rubber 'H' gasket from JCWhitney. Cost about $200 including Gila RV window tint film on all glass.
Article in Trailer Life begs to differ with your assessment...Experts feel it very well may be worth it. My windows are dual pane Hehr windows, came dark tinted...no issues, zip, nil, nada..Cut's down on noise and even the Trailer Life article stated they DO add SOME insulation, helping heating and helping in cooling...check out the article, supports having them...Will never own an rv again unless it has dual pane windows, insulated or whatever tag you want to put on them.
Pay back on investment seems also to seem it's "worth it"...had them on an 04 Coachmen and difference in trade with them was the exact same amount they cost me....after 3 years..yeah, worth it to some of us:)