As with any plumbing system there is always the possibility for water leaks. Some systems may incorporate a central heat exchanger and others will use heat exchangers in each room. Air is circulated between the house and the Micro-cogen unit. Many prefab houses and mobile homes are already set up with air ducting. Two large 12 to 16 inch air ducts must exit the house and connect to the micro-cogeneration unit.
System is lower in cost.
Balancing the air distribution through ducts has frequently caused problems for the contractor and the homeowner. One or two room either get too hot or too cold. Fan and air noise is also a common problem. Concrete mounting pad. Many prefab houses and mobile homes are already set up with air ducting.