had mikuni heating put in 2 years ago have single aft cabin 37 , heater was placed under shelf in main locker and routed under toilet shelf into main cabin had one vent in heads one in main cabin through to forward cabin one routed around the back to the foot well in back cabin have had no problem with mikuni where some have had costly repaires with erberspacher.the one in the heads can dry wet gear very fast and also makes it cosy “warmest room in the house”.what ever your choice couldnt do without heating even in late summer evenings on low takes the chill off