LopezBart
Well-known member
In case people are wondering why these requirements exist for replacement/remodeling windows, it's interesting. The lifetime of a house (and windows) has a much longer tail than more "consumable" products such as appliances and cars, and thus the persons incentivized to save money buying less efficient components are often not the ones who will pay for the increased energy costs over the long term. For rental housing, that separation is immediate, of course; the landlord puts in cheap windows and the tenant pays the heating bill. The same is true for house built on spec or as part of a development.
