Judge the conditions before the product
Frame square, sill condition, flashing detail, the material and glass chosen, trim restoration, and which direction a wall faces the sun all shape the result as much as the window unit does.
Build a complete scope
- Whether original sash is repairable, common in the older neighborhoods
- Openings measured individually rather than assumed to be standard sizes
- Frame material and thermal break for real winters, not glass coating alone
- How the opening is air-sealed and flashed, which outlasts the unit itself
- Interior and exterior trim restoration, disposal, and warranty terms
Champaign context
Champaign's growth since its 1855 founding has left window openings across the city that reflect whatever sash sizes and proportions were standard when each home was built, from 19th-century originals to modern manufactured units. That range is why window replacement in the Champaign-Urbana area often starts with matching a home's actual opening, not assuming a standard size.