Yes. The increased R-value and lower air leakage means that heating and cooling equipment must be designed for a high performance structure. This translates into lower capacity heating and cooling units and most importantly lower cost units. Since ThermaFoam R-Control SIP structures are so air tight, air exchangers are required as part of the HVAC system to bring fresh air into the structure while simultaneously exhausting air from the structure to ensure optimum indoor air quality. Comfort to the occupants is unparalleled.