I'm really interested in this too.....
AFAIK they don't replace housings.
if warranty exists, you get a new unit.
My warranty just had a few days left when I sent mine back for some small cracks to be looked at (March 2018).
They offered to replace housing for free, or to supply a brand new unit for €79.
I opted for the new unit and later found out that it only carried over the few days from my old warranty, (I read somewhere that you always have 7 days to determine if you received a fully functioning replacement or not).
I also learned that if they were to offer a goodwill type discounted replacement for €248 at some point, then this would come with a full new warranty.
I'm in my third year of Mighty and I expect to get at least another one or two years from just my initial investment and the €79 top up. It definitely seems like the best type portable for me right now and I'm very glad I went for it, it helped me continue to completely kick the tobacco and burning for good.
I sold some portable vapes that were lying around and got a used Crafty based on my success with Mighty.
They are a great pair, I keep the Crafty quite clean and take it anywhere where 4-5 caps or less is enough.
I've come to accept that a better portable for me has yet to be released and I don't really need to buy another vape since finding this combo 6 months ago, I think I'm VAS cured as I'm buying some normal things again!
I was advised to go for a Mighty (Thanks FC!
) because I was really sick of faulty, unreliable and melting rubbish from China at the time. So I found it hilarious that it worked perfectly every single time for me the whole 2 years, and the new one is the same.