Compare assemblies separately
A door and a window use different construction and may have different product ratings. Ask for the documented performance of each assembly, including its glazing.
Make thresholds part of the comfort plan
Discuss weatherstripping, sill conditions, and threshold details along with window air sealing. A coordinated scope helps identify gaps between trades.
Plan for your property
Coordinate window sightlines, door finishes, hardware, and thresholds as a single project. Ask for separate window and door line items so your budget stays clear from the first conversation.
Further reading: U.S. Department of Energy window guidance. Ask the provider to verify the exact product’s certification and performance.