The Fix-It Playbook — One Room Is Always Cold

The thermostat says 70°F (21°C) and the rest of the house agrees — except that one bedroom, which never quite gets there. Usually it's fixable from inside the room and the basement, no ductwork redesign required.

Inside: Step 1: Check inside the room first · Step 2: Find and adjust the balancing damper · The honest cost comparison · When to stop and call a pro · Troubleshooting · Printable cold-room checklist.

Doing it yourself: free — balancing dampers and closed vents cost nothing to check or adjust, and weatherstripping a drafty window runs $10–20.
Calling a pro: professional duct balancing or a damper replacement runs around $500 installed (parts alone under $200); a dedicated duct redesign is estimated on site.

6 pages of labeled diagrams, parts lists and real numbers — no filler, no 40-minute video. Temperatures and measurements in both Fahrenheit/Celsius and feet/meters, so it works wherever you are. Ends with a printable checklist.

Instant PDF download: print it for the garage or follow it on your phone with the parts in hand. Yours to keep, no subscription.

Need more than this one job? The Heat Kit bundles all 5 furnace and heating-system guides — 25 pages — for $14.