Condensation

Burroo 67 · January 9, 2020

Hi Guys,

My RX400H suffers quite badly from condensation, even with two large Halfords' dehumidifier bags in it. I know the car is almost 12 years old but to constantly have to mop up moisture from inside the car windows is driving me nuts. Any recommendations for a good dehumidifier, possibly 12V operated?

cruisermark · January 9, 2020

Hi

A dehumidifier might solve the problem but the root cause will still be there

I would check for leaks - this could be door, boot and sunroof seals and rear lights - also check for blocked rain channels.

Leave your aircon on all the time - this ensures dry air circulated into the cabin

Ensure recirculate is always left set to outside air

Leave airflow set to feet and front windshield.

I have a 430 and with these settings I hardly ever have to touch any control unless on iced up morning

Hope this helps

Burroo 67 · January 9, 2020

Thanks Cruisermark, I think the main problem is that my aircon went in the bung during the summer and I've been told it could be £600-£1000 to repair it. What with the car being almost 12 years old i'm kinda loathe to pay that amount as i spent over a grand on the car last spring to get it thru its MOT and service. Might just invest in a 12v dehumidifier until finances become a bit more lively....

plastic orange · January 9, 2020

I'd suggest you have water ingress as these cars seem very prone to it. Plenty threads on this topic and finding the source is very difficult, but once sorted and carpets are dry, then condensation should be sorted.

Pete

Herbie · January 9, 2020

Block off the air vents and hire a smoke machine. Put it inside the car and see where the smoke emanates from - where smoke comes out, water can get in.

m4rkw · January 25, 2020

On 1/9/2020 at 3:12 PM, Herbie said:

Block off the air vents and hire a smoke machine. Put it inside the car and see where the smoke emanates from - where smoke comes out, water can get in.

Genius.