Is it worth replacing windows that still open and close fine?

Yes, it can absolutely be worth replacing windows that still function mechanically, especially in Ottawa's climate where energy efficiency makes a significant financial difference over time.

Energy efficiency is the primary driver for replacement. Even if your windows open and close properly, older windows (particularly those over 15-20 years old) often have single-pane glass or inefficient double-pane units that allow substantial heat loss. In Ottawa's Climate Zone 6, where we experience temperature swings from -30°C to +35°C, poor window performance can cost hundreds of dollars annually in wasted heating and cooling.

Modern windows offer dramatic improvements that functioning older windows simply can't match. Today's triple-pane windows with Low-E coatings and argon fill can reduce heat loss by 50-70% compared to older double-pane units. The improved insulation also eliminates cold drafts and reduces condensation issues that plague many older windows, even when they still operate smoothly.

In Ottawa's market, the payback period is typically 8-12 years through energy savings alone. Factor in increased home value (quality windows can add $8,000-$15,000 to resale value), improved comfort, and potential eligibility for Canada Greener Homes Grant rebates, and the investment becomes even more attractive. Windows that are 20+ years old often have failing seals, even if the sash still moves, leading to fogged glass and reduced insulation performance.

Consider replacement if your energy bills seem high, you notice drafts or cold spots near windows, condensation forms between glass panes, or your windows lack modern security features. The combination of energy savings, comfort improvements, and home value increase often justifies replacement even for mechanically sound older windows.

For a free assessment of your windows' energy performance and replacement options, request a quote from Ottawa Window Pros.