Comparing window replacement quotes properly
Window quotes hide in the details: glass package, frame material, install method, and what happens to the old units.
Specify the glass
U-factor, solar heat gain coefficient, and the number of panes. A quote that omits these is a number without a product behind it, and the cheapest will be a single-pane unit dressed up as an upgrade.
Specify the install
Full-frame replacement removes the whole unit including the frame. Pocket replacement sets a new sash into the existing frame. Full-frame costs more and fixes rot. Pocket is faster and hides it.
Ask about the opening
Who repairs framing if rot is found, and at what rate. This is the same trap as roof decking and the answer belongs in the contract.
Watch the financing
Window sales leans on monthly payment framing. Ask for the cash price and the total financed, then compare that to the other bids.
Frequently asked questions
Do replacement windows pay back in energy savings?
Rarely on savings alone. Comfort and appearance are the honest reasons.
Full-frame or pocket?
Full-frame if there is rot or the frames are old. Pocket if the frames are sound and the budget is tight.
How long does installation take?
A day for a typical order, longer for full-frame with rot repair.
Do I need a permit?
Often yes, and it varies by jurisdiction. Confirm who pulls it.