Many builders and designers are realizing the energy efficiencies of using SIPs for the envelope of the structures they are building and designing. An issue that keeps popping up when using SIPs for the envelope is what to do about the HVAC system. SIPs are so energy efficient that the required HVAC loads are coming in below what conventional forced air systems supply. This means that if a forced air system is used it will be inefficient because it will short cycle. Passive house designs are having similar issues.
Thankfully there are options to this conundrum. Enter mini-splits. Read more here: which describes options from one manufacturer as featured on Builder Online and in Residential Building Products. Using mini-splits to supply the heating and cooling needs of the energy efficient SIP envelope is a match made in heaven.