Re: Climate control leak..
IM assuming you have an NC Fairlane or similar. If the noise is coming from a small 'vent' next to the climate control panel, the noise is normal. A cabin sniffer is used in these system to monitor cabin temp, and it uses this vent to draw air in. Removing the trip computer surround panel and fitting a small piece of foam rubber in the tube will reduce the noise drastically. I think they have a similar piece fitted from new, but with time they fall apart and get sucked into the system. Give it a go.