I’m looking for some technical insight and part identification for the HVAC blower outlet area on my 2021 Citroën Berlingo K9(Diesel 1.499, VIN VR7**************[VIN obfuscated, can be read by forum staff]).
After a lengthy and expensive repair at a garage (blower motor replacement among other things), I started noticing significantly reduced airflow from my vents.
Later, I also found a chunk of broken plastic on the floor of the passenger side that perfectly fits around the square outlet of the blower motor.
After examining the motor and the way it mounts, I’ve pieced together what likely happened:
During the blower motor replacement, the garage did not fully remove all the fasteners.
Instead, they forced the blower out, breaking:
One of the mounting arms on the blower itself
A plastic duct section or flange that mates with the square outlet of the blower motor.
They didn’t mention any of this to me and reinstalled the motor with an improvised fit (after I called and challenged them, the mechanic admitted he improvised something but said this square opening of the blower motor is not important and he thinks it's some air recycling hole).
The result is now:
Noticeably lower airflow through the HVAC system.
A garage that insists “it’s normal” and even claims the square port is an air intake — which it’s not.
I dont know but piecing together that that outlet feeds directly into the HVAC housing (heater box) through either:
a separate molded adapter / flange, or
an integrated duct on the HVAC housing.
The broken piece I’m holding in the attached photo fits around that square outlet. It looks like it was originally part of whatever seals and directs the blower’s output into the main heater box.
Is this piece a separate, replaceable component (e.g. “air distributor” / duct adapter), or was it part of the main HVAC housing itself?
I would really appreciate any info about this. If a sepparate part-
the official PSA/Citroën part number for this intermediate duct or adapter,
photo/diagram from Service Box or workshop documentation showing its placement.
If it’s part of the main housing, that’s also important to know — because it means the garage broke a major assembly.
I’m not trying to DIY this . I need this clearly documented because:
The garage is being argumentative and seems to slightly take responsibility, but they're clueless. They want to cooperate but don't know what I'm talking about.
I need to prove exactly what was broken and which part it belongs to to tell them (and if no luck there then to escalate).
If anyone here has removed this blower before, your help would be invaluable. If someone has, a picture/diagram of the ducting between the blower and the HVAC box would help me confirm whether the piece is separate or part of the main housing.
Attached is the closest thing I could find online, but it doesn't solve the mystrery broken piece that hugs the air 'exit' square.
Thank you in advance for any help you can offer. It's been a long expensive frustrating saga as I rely on my car's AC for work.
