For those of us running diesel heaters ....

[mistericeman]

I can highly recommend these exhaust silencer wise .....

Upgraded Exhaust Pipe Silencer Muffler For Car Air Diesel Parking Heater 24mm UK | eBay

1x exhaust silencer. 2KW/3KW/5KW/8KW Chinese Air Heater. 2KW/3KW/5KW/8KW WEBASTO Air Heater. Easy installation, good noise reduction, long life and so on. Pipes with porous noise reduction curved design inside to eliminate noise.

www.ebay.co.uk

Not expensive AND make a big difference noise wise to the exhaust noise IMHO

 

[trevskoda]

They are on temu very cheap as well, my next move in spring.

 

[Nesting Zombie]

Anything to make the neighbours heater quieter HAS to be a good thing

 

[mistericeman]

Anything to make the neighbours heater quieter HAS to be a good thing

Spot on .....

I've had to move on in the past because of someone running their diesel heater unsilenced ...

I'd hate to upset anyone with the noise of ours running ...
The one I linked to is 50% quieter than the ones supplied with most Chinese diesel heaters .

Combined with intake air silencers they make a huge difference