Can I make My BiltBest Double Hung Windows perform and be Energy Efficient?

Can I make My Old BiltBest Casement and Double Hung Windows Perform Well and be Energy Efficient?

A growing body of studies is demonstrating that a BiltBest wood window that is properly maintained, properly weather-stripped can be just as energy efficient as a new replacement window. Many people find that upgrading the original glass to LoE 272 or LoE 366 Insulated glass is even more efficient than having a new double-pane window unit installed. This is because the new glass technolgies that were not available 20 30 years ago.