Window & door guides
Straightforward answers to the questions homeowners ask most before replacing windows and doors.
How Much Do Replacement Windows Cost?
Replacement window cost depends on size, style, glass, frame, and installation. The best way to know is to price your actual openings.
How to Know When to Replace Your Windows
Drafts, fog between panes, hard-to-operate sashes, condensation, and rot are common signs your windows may need replacing.
Replacement Windows vs. New Construction Windows
Replacement windows fit into existing openings; new construction windows attach to the framing and are typical for new builds or major remodels.
Double-Hung vs. Casement Windows
Double-hung windows slide up and down; casement windows crank outward on a hinge. Each fits different rooms and needs.
How Long Do Replacement Windows Last?
Lifespan depends on the product, installation quality, climate, and care. Good installation and simple maintenance help windows last.
Are Energy-Efficient Windows Worth It?
For many homes, energy-efficient windows improve comfort and reduce drafts. Savings vary by home, climate, and the windows being replaced.
How Many Years Do Windows Last?
There's no single number — window lifespan varies by material, installation, weather, and upkeep.
How to Measure a Window for Replacement
Measure width and height inside the frame at three points each and use the smallest. A professional will verify before ordering.
What to Expect During Window Installation
On install day the team removes old units, prepares openings, installs and seals new windows, and cleans up.
How to Choose Replacement Windows
Start with how each room is used, then choose style, glass, frame, and color.
Window Financing Guide
You can choose financing at NRG checkout and apply with a third-party lender. The lender sets approval and terms.
Sliding Glass Door Replacement Guide
Replacing an old sliding door can reduce drafts and make it easier to open and close.
Patio Door Replacement Guide
Choose between sliding, hinged, and French-style patio doors based on space, style, and how you use the opening.