This is the time of year when people realize they have leaky, energy draining windows. Those chilly drafts and higher heating bills might mean you need new windows.

Replacing older windows for more efficient, ones is straightforward, but you’d be surprised how many details there are to decide on. For example, what window parts will be involved -

Is the full window being replaced, including the frame?

Is a retrofit window inserted into the existing frame?

Are just the sashes being replaced with a new sash kit?

Here are three options to consider:

Full Window Replacement – The existing frame is removed and the new window placed into the same position that was occupied by the old window. This is an opportunity to fix issues such as water or air leakage that may have occurred around the old frame.

Inserting windows in existing frame – The old sash, side jambs and trim are removed, but the original frame is left in place. The new window is inserted into this opening. Accommodate slightly out-of-square conditions of the existing frame if possible. Significant out-of-square conditions should be fixed with complete window replacement.

Sash replacement - Many manufacturers offer replacement sash kits, which include jamb liners to ensure good operation and fit. This option allows for relatively easy installation, but the existing frame must be in good shape so that air and water tightness is ensured.

Among each of these options you can find products with a variety of energy efficiency features and rated energy performance. Choosing among different energy-efficiency options can be complex. A good way to start is by looking for ENERGY STAR windows that qualify for the federal tax credit for efficient replacement windows.

You can read more here.