We replaced our old leaking double pane wooden windows this summer with new low-E argon-filled vinyl windows from Jeld-Wen. I used new construction windows, so it was quite a lot of work. The difference has been quite dramatic, really, even after just installing them. You could touch the old south-facing windows and the glass would be warm to the touch. The new windows' glass felt like the inside temperature.
When it was 90*F and humid this late summer, our 20-year-old Goodman A/C compressor easily kept up with the load, which was not the case before we did the windows. And despite it being below freezing at night a few nights last week, the inside temperature never dropped below 67*F, so our furnace never came on. Our electrical bills for the last few months were about 15% lower than typical, and I'm confident that our aging HVAC equipment will last longer.
Our house has 10 window openings (some are double-wide windows) and it cost $3,200 in materials for our house. I'm sure it's money we won't get back in utility savings, but it's money we MIGHT get back in extending the life of our HVAC equipment, and it's money we WILL get back if we ever have to sell the house (because our old windows wouldn't have passed a home inspection anyway).
When it was 90*F and humid this late summer, our 20-year-old Goodman A/C compressor easily kept up with the load, which was not the case before we did the windows. And despite it being below freezing at night a few nights last week, the inside temperature never dropped below 67*F, so our furnace never came on. Our electrical bills for the last few months were about 15% lower than typical, and I'm confident that our aging HVAC equipment will last longer.
Our house has 10 window openings (some are double-wide windows) and it cost $3,200 in materials for our house. I'm sure it's money we won't get back in utility savings, but it's money we MIGHT get back in extending the life of our HVAC equipment, and it's money we WILL get back if we ever have to sell the house (because our old windows wouldn't have passed a home inspection anyway).