The choice is clear from SMSMAN's blog

It’s easy for some homeowners to be swayed by a cost argument for replacement windows because it’s true, when there are no issues at all with the frame, insulation, siding, flashing and other elements, simply putting in replacement windows can save you some money in the short run. However, if there is underlying rot and gaps that have opened up, causing uncomfortable drafts, you haven’t addressed these significant problems and you’ll end up replacing the windows again, sooner than you think. Now what’s costing more?

Another consideration is the use of window air conditioners. Many homeowners, especially those with older homes, often use these convenient cooling systems. However, window-mounted air conditioners do not fit the same in replacement windows and can stress the frame, eventually compromising it.

First and foremost is the opportunity to remedy existing and potential structural problems, as we mentioned above, so that your new windows provide the greatest efficiency and maximize your return-on-investment. Even though they can cost a little more, new construction windows provide the biggest bang for your buck. In fact, if your current windows are in bad shape, using replacement windows can end up costing as much as installing new construction ones.

There is no situation where replacement windows are better than new construction windows. If cost is your primary concern, it is possible to save some money with replacement windows. But if you factor in long-term value, efficiency, aesthetics, and performance, new construction windows are the clear winners.

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