When aiming to resolve thermal comfort issues it is best to install efficient window coverings and external shades rather than rely solely on heating, ventilation and air conditioning (HVAC). Energy efficient window coverings and outside shades help keep indoor temperatures warmer in winter and cooler in summer, helping to lower the costs of running even the most efficient HVAC systems.
In cooler climates, look for window coverings and outdoor shades with low U-values in order to minimise discomfort caused by cold windows. At the same time, a higher SHGC provides more free heating from the sun, especially in midwinter.
In warmer climates look for lower SHGC values, preferable with a lower U-value if possible. WincovER’s heating and cooling stars account for all these effects and make the selection of the right product easier for the homeowner.