Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Air Traffic Control Provided Assistance; Air Traffic Control Issued New Clearance; Flight Crew Returned To Departure Airport; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification
Aircraft
After takeoff; an extremely loud buffeting noise started. I talked to the Flight Attendant and could hear it was much louder in the cabin via the interphone. Flight Attendant said it was coming from the main cabin door. I told the First Officer to level out; we stopped around 6;000 feet. Around that time I noticed the cabin climb rate was 2;500 FPM. I assumed that the door seal had blown. I notified Maintenance and Dispatch that I would be returning to ZZZ. We landed overweight at about 48.6. Landing was extremely light (greased on). We'll guesstimate 01 FPM. No passengers complained of pressure issues.
CRJ-200 Captain reported a pressurization problem during climb that resulted in a return to land.