An efficient home means a smaller, less expensive conditioning system.
Today’s HVAC systems are increasingly complex. Manufacturers have designed them this way to improve energy performance and to provide better control over the indoor temperature throughout a house. But it’s actually much easier to couple a simple HVAC system with a tight building envelope. Improving the envelope first and then designing an HVAC system to match leads to substantially smaller and simpler heating and cooling systems, while providing improved comfort and energy efficiency.