Use published repair bands without an energy promise
Planning figures are $58-$85 per hour, $220-$380 for a half-day pre-winter list of 4-6 locations, and $420-$680 for a full-day list. Individual task bands include $15-$30 for window caulk, $45-$80 for ordinary weatherstrip, and $60-$120 for door adjustment. Counts, removal, access, materials, and deterioration determine the actual estimate.
No responsible caulk or weatherstrip repair comes with a promised utility saving. Comfort can also be affected by insulation, equipment, ductwork, pressure differences, and openings outside the requested scope. I can document the joints and moving parts I am asked to repair. For an estimate, send location-by-location photos, counts, access notes, and the date you want the work considered.