I put in high-efficiency windows last winter and then added solar panels this spring. Honestly, the combo seems to work better than I expected. My AC barely runs now, even when it’s blazing outside. The upfront cost hurt a bit, but my electric bill dropped a ton. Not sure if it’ll pay off as fast as the installer claimed though… Anyone else try both and notice a difference?
I did almost the same thing—got new windows last fall, then solar in March. My electric bill’s way lower too, but I’m still not sure about the payback timeline. Installer said 7 years, but with all the little fees and winter coming, I’m kind of skeptical. Still, it’s nice not hearing the AC kick on every hour.
Installer said 7 years, but with all the little fees and winter coming, I’m kind of skeptical.
Funny how those payback numbers always seem to be on the optimistic side, right? I’ve worked on plenty of homes where the owners were told 6-8 years, but once you start looking at utility rate changes, annual maintenance, and all those “mystery” fees that show up, it’s often closer to 10. Not saying solar isn’t worth it—just that the math isn’t always as pretty as the brochures make it out to be.
That said, combining new windows with solar is a smart move. The windows cut down on heat loss, so your HVAC isn’t running as much, which means your solar system has less to cover. It’s like plugging one leak before trying to fill the bucket. But, depending on your climate, winter can really throw things off. Shorter days, more clouds, snow covering panels—production drops, and you’re back to drawing from the grid more than you’d like.
Had a client last year who did triple-pane windows and a 7kW solar setup on a 1960s split-level. Summer bills dropped by about 70%, but winter was a different story. Between the lower solar output and still needing electric heat, their savings weren’t as dramatic. Still, they said it felt better inside—less drafty, more consistent temps—which is hard to put a price on.
I will say, not hearing the AC kick on every hour is a win in itself. Makes you realize how much energy (and noise) old windows were costing you. Just keep an eye on your utility statements over a couple years. That’s when you’ll really see what the payback looks like, not just in dollars but in comfort too. Sometimes that’s worth more than the spreadsheet says...
I’ve always wondered about how much those “comfort” improvements actually factor in. Like, I get that lower bills are nice, but I noticed after we swapped out our old windows, the drafts were gone and the house just felt quieter. Not sure how you put a dollar value on that. Anyone here actually try tracking their indoor temps or humidity before and after? Curious if it’s a big difference or just feels that way.
Anyone here actually try tracking their indoor temps or humidity before and after? Curious if it’s a big difference or just feels that way.
That’s interesting about the quieter house—I hadn’t really thought about that side of it until you mentioned it. We did notice less outside noise, especially with the windows facing the street. As for tracking temps, I started jotting down readings from a cheap digital thermometer in the living room before and after all the upgrades. The swings aren’t as wild now, especially during those hot afternoons. Humidity’s still a bit up and down, but overall it feels less stuffy. Hard to say if that’s just perception or actually measurable, but daily life definitely feels more comfortable.
I actually broke out a data logger when we swapped out our windows—figured I’d finally put it to use instead of just bragging about owning one. The numbers backed up what you’re saying: temperature stayed way steadier, especially in the afternoons when the sun used to roast the place. Humidity’s trickier, though. Ours still bounces around depending on the weather and how often someone forgets to turn on the bathroom fan... but the house definitely feels less muggy overall. Funny how you don’t realize how much those old windows let in until they’re gone.
That’s interesting about the humidity—ours is a bit all over the place, too. I’m guessing the windows help more with temperature swings than moisture, but maybe that’s just my setup. Did you notice any real change in your energy bill after the swap? I’m considering solar next, but I’m not sure if the combo with new windows really stacks up in terms of actual savings or if it’s mostly comfort.
I swapped out my old single panes for double-glazed windows a few years back, and honestly, the biggest thing I noticed was how much quieter the house got. As far as bills go, there was a drop—maybe 15% off my heating and cooling, but it wasn’t some massive change. The comfort factor was bigger than the savings, at least for me.
Now, I did add solar last summer, and that’s where I saw a real difference in the energy bill. The combo does help—they work together, but the windows alone didn’t make my place magically efficient. Solar’s a bigger upfront hit (and my roof install took longer than promised), but it’s been paying off steadily. I’d say if your HVAC runs a ton because of drafty windows, fix those first. If you’re mostly worried about cost savings, solar’s got more impact over time.
Humidity’s still a pain though—I think that’s just our climate. Guess it’s always something with these old houses...
I get what you’re saying about the comfort boost from new windows, but I’d push back a bit on solar being the “bigger impact” for everyone.
In my case, tightening up the envelope (windows, attic insulation, air sealing) actually cut my usage enough that a smaller, cheaper solar system made sense. If your house is still leaking air, you’ll need a bigger solar setup to cover that waste. Sometimes it’s less about the panels and more about stopping the leaks first. Just my two cents—old houses are always full of surprises.“If you’re mostly worried about cost savings, solar’s got more impact over time.”
That makes sense—air sealing and insulation seem like the boring stuff, but I’ve noticed the same thing. I’m still debating which order to tackle things. Did you do a blower door test, or just go by feel? I’m worried about missing hidden leaks.