Yeah, I hear you on the fogging. I swapped out the old single panes in my basement last winter and instantly noticed it was warmer, but the condensation was a surprise. I tried cracking the window a bit, but that just let the cold back in… Kind of a tradeoff. Has anyone found a way around that besides running a dehumidifier 24/7? I’m not wild about the extra electricity bill, but maybe there’s a trick I’m missing.
Condensation’s a classic basement headache, even with new double panes. Honestly, you’re probably dealing with high humidity down there—common with basements. Cracking the window only helps a little and, yeah, kills your heat savings. Try running your bathroom fan (if you’ve got one nearby), or even just keep the air moving with a small fan. Sometimes that’s enough to keep the glass clear without running a dehumidifier nonstop. If you can spot any moisture sources (leaky pipes, damp walls), tackling those goes a long way too.
That’s a good point about humidity being the main culprit. When we swapped out our old single panes for double, I expected the condensation to disappear completely, but it’s honestly still there on cold mornings—just not as bad. I’ve noticed that even with the better insulation, if the basement air isn’t moving, moisture still collects. We did end up getting a small hygrometer to actually track humidity levels, and it was eye-opening. If you’re not already monitoring that, it might help pinpoint when you need to run a fan or crack a window. Double panes are definitely warmer, but yeah, not a magic fix for moisture.
Funny, I had a similar surprise after putting in double panes. Our living room windows used to drip every winter morning, and while the new ones helped, they didn’t totally solve it. Ended up tracing the issue to a fish tank in the corner—humidity from that thing was wild. Once I moved it and started running a dehumidifier, the glass finally stayed clear. The windows made the room feel less drafty, but moisture’s a whole other beast...
Once I moved it and started running a dehumidifier, the glass finally stayed clear.
That’s wild about the fish tank—never would’ve guessed that could cause so much window fog. I swapped my single panes too and noticed way less draft, but yeah, condensation was still a thing. Seems like double panes help, but don’t fix everything. Glad you figured it out.
I hear you on the condensation—double panes are definitely better, but they’re not magic. I had a similar thing after swapping mine out. Less drafty, but still got some fog when the humidity spiked (thanks, Midwest winters). Out of curiosity, did you guys do anything with your window frames or just pop in the new glass? I’ve read the frames can make a bigger difference than folks think...
- Had the same thing happen—swapped in double panes, but didn’t mess with the frames.
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“I’ve read the frames can make a bigger difference than folks think...”
Yeah, this is spot on. My installer actually warned me about that, but I was too cheap to go all-in.
- Frames are original (70s ranch), so even with new glass, there’s still cold air sneaking in around the edges.
- Condensation isn’t as bad now, but definitely not gone. Midwest humidity just laughs at my efforts some days.
- If you’re after max comfort, might be worth looking into new frames or at least sealing up the old ones better.
- Honestly, if I could do it over, I’d budget for both—otherwise you’re only halfway there.
- On the bright side, no more icy drafts hitting me in the face while I watch TV... small wins?
“Honestly, if I could do it over, I’d budget for both—otherwise you’re only halfway there.”
That’s the part a lot of folks miss, in my experience. Swapping out glass is a decent upgrade, but if those old frames are still letting air sneak in, you’re not getting the full benefit. I’ve seen plenty of 60s and 70s homes where the frames are basically just decorative at this point—warped, drafty, sometimes even pulling away from the wall a little.
Did your installer mention air sealing or foam around the frame? Sometimes just hitting the gaps with some low-expansion spray foam or caulk can make a surprising difference. Not as good as new frames, but way cheaper and less hassle. Still, with Midwest humidity like you said... you can only fight it so much.
I get being hesitant about the cost though. Full frame replacements aren’t cheap. But yeah, if comfort’s the main goal, it’s tough to ignore how much the frame matters. At least you’re not getting smacked by those icy drafts anymore—that’s progress in my book.
Not gonna lie, I think folks sometimes overestimate how much the frames matter unless they’re totally shot. I swapped out just the glass in my 80s ranch—left the old wood frames—and honestly, it was a night-and-day difference. Sure, if your frames are Swiss cheese, that’s a problem, but a lot of times some caulk and weatherstripping does the trick. Full replacements are nice, but man, my wallet’s still recovering from just the glass swap. Sometimes “good enough” really is good enough, especially if you’re not planning to stay forever.
Sometimes “good enough” really is good enough, especially if you’re not planning to stay forever.
I’m with you on that. When we moved in last year, all our windows were single pane and drafty, but the frames weren’t bad at all. I just did the glass swap too—kept the old wood frames because, honestly, full replacements were way out of budget. The difference in comfort was huge, and my heating bill dropped a bit. Not perfect, but for now it’s plenty. Maybe someday I’ll do a full upgrade, but for now, my wallet’s happy enough.