Getting the most LEED credits out of window upgrades – worth the hassle?

I get where you’re coming from. We did similar upgrades, and honestly, I kept wondering if the money would’ve been better spent elsewhere. The windows are definitely quieter and less drafty, but the LEED paperwork nearly broke me - so many little things to track. Did you find your house felt darker in winter with the low SHGC glass? Ours does, and now I’m debating if we should’ve gone with something a bit less “efficient” just for more light and passive heat. Curious if anyone’s tried mixing window types or if that just complicates everything more.

Yeah, I noticed the same thing with the low SHGC glass - definitely darker in winter. The living room feels like a cave some days. I’ve got a couple original windows left in the back and honestly, the mix isn’t that big a deal functionally, but it does make the paperwork messier if you’re chasing LEED points. If I could do it again, I’d maybe go for higher SHGC on the south side for that extra sunlight and just deal with shades in summer.

If I could do it again, I’d maybe go for higher SHGC on the south side for that extra sunlight and just deal with shades in summer.

- Totally get the “cave” vibe in winter. My living room went from sunny to full-on bat cave after the upgrade.
- I actually left a couple old windows too, mostly because I ran out of steam (and cash). The mix does make energy modeling a headache though - my LEED paperwork looked like a bad group project.
- Higher SHGC on the south side is a smart move. Wish I’d thought of that... instead, I’ve got blackout curtains in July and am wearing sweaters in January.
- Honestly, chasing every last LEED credit felt like diminishing returns for me. The comfort difference was way more noticeable than the points.
- If anyone’s weighing it, don’t underestimate how much you’ll miss sunlight in winter. Or how much you’ll curse your own name when the summer sun turns your couch into a frying pan.

Window upgrades are worth it, but man, there’s always some tradeoff.

instead, I’ve got blackout curtains in July and am wearing sweaters in January. - Honestly, chasing every last LEED credit felt like diminishing returns for me.

Definitely agree about the tradeoffs. I swapped out my old single-pane windows for double-pane low-e a few years back, thinking I’d hit the sweet spot between cost and efficiency, but winter sunlight is noticeably less now. House is quieter and less drafty, but I do miss that afternoon sun warming up the living room. LEED points were a bonus, but honestly, the paperwork and modeling were more work than expected. Sometimes it feels like you’ve got to pick two out of three: comfort, daylight, or points.

- Totally hear you on the sunlight tradeoff. I put in triple-pane for a remodel, thinking I’d be set for both energy and noise, but now the living room feels a bit cave-like in winter.
- LEED paperwork was a beast - never thought window specs could be so complicated.
- Sometimes I wonder if just sticking with a decent window and focusing more on insulation would’ve been a better use of time and money.
- For anyone who’s done this, did you notice your heating bills really drop, or was it more about comfort? I’m not sure the numbers matched the hype in my case.

I totally get the “cave” vibe - my place got way darker after I swapped in high-efficiency windows. The drafts disappeared, but honestly, my bills didn’t drop as much as I hoped. Maybe it’s just cozier? Worth it for the quiet, though...

my place got way darker after I swapped in high-efficiency windows. The drafts disappeared, but honestly, my bills didn’t drop as much as I hoped.

Yeah, I ran into the same thing - my 70s ranch had those old leaky sliders and I figured new windows would be a game-changer. The drafts are gone (finally), but I swear it feels like I live in a tunnel now when it’s cloudy. Bills only went down a bit, but the real win for me is how much quieter it is. Didn’t expect that at all. Sometimes I kinda miss the sunlight, though… thinking about adding a solar tube or two just to brighten things up.

Sometimes I kinda miss the sunlight, though… thinking about adding a solar tube or two just to brighten things up.

Not sure I’d go straight to solar tubes just yet. I had the same “tunnel” vibe after my window swap, but I realized the low-E coatings were blocking more visible light than I expected. Swapping to windows with a higher visible transmittance rating helped a ton - might be worth checking what your new ones are rated for before cutting holes in the roof. Sometimes it’s just the glass spec, not the size or placement.

That’s a solid point about the glass spec. I actually fell into the same trap - spent ages debating window size and placement, but it turned out my “gloom cave” was just because of the low-E tint. Swapped to higher VT glass and it made a bigger difference than I expected. Solar tubes are cool, but yeah, patching up a roof isn’t my favorite weekend project if I can avoid it. Sometimes it’s the little details that sneak up on you...

- Swapping to higher VT glass is a move I see a lot lately - folks underestimate how much that low-E tint dims things.
- Solar tubes can help, but yeah, if you’re not up for cutting into the roof, better glass is less hassle.
- LEED points are nice, but sometimes the install cost or look isn’t worth it for every client.
- Curious - did anyone notice interior fading or heat gain after switching to higher VT? Sometimes it’s a tradeoff.

I get the appeal of more daylight, but after swapping to higher VT glass in my kitchen, I actually regretted it a bit. Sure, things looked brighter at first, but I started noticing my wood floors near the windows faded faster than before - like, noticeably within a year. The extra heat was also real during summer afternoons, even with the AC. I guess if you’re not in a super sunny spot it’s less of an issue, but for me, the tradeoff wasn’t worth it. Sometimes that tint does more than people think…

Sometimes that tint does more than people think…

Yeah, you nailed it - high VT glass really can be a double-edged sword. Folks get all excited about daylighting for LEED points, but it’s easy to forget UV and heat gain are part of the package too. I’ve seen a few clients swap out their windows for “greener” ones, then scramble to add window films or even shades after the summer hits. That fading on the floors is real - UV coatings matter just as much as visible light, especially with hardwood. Sometimes a little tint saves you a lot of headaches (and refinishing bills) down the line.

I get where you’re coming from about the fading - my hardwood floors have seen better days thanks to the sun. But honestly, I don’t think a little tint is always the answer.

“Sometimes a little tint saves you a lot of headaches (and refinishing bills) down the line.”

- Totally hear you on the cave vibe - went too dark once and my living room felt like a bat cave for a year.
- Ended up swapping to low-E glass with just enough UV block to keep my floors from turning zebra-striped.
- Cellular shades are a lifesaver, especially in the summer. Just wish my cat didn’t think they’re for climbing...
- LEED credits are nice, but honestly, comfort and not tripping over furniture in the dark wins for me.

I totally get the “bat cave” problem - been there with a client who wanted max efficiency and ended up needing a flashlight to find their couch. Low-E glass is a solid middle ground, though. I’ve seen folks go all-in for LEED points, but honestly, if you’re squinting just to read your phone, it’s not worth it. The comfort factor really does outweigh the bragging rights sometimes. And yeah, cats vs. cellular shades... let’s just say mine “customized” the bottom row.

- Just finished a round of window upgrades last winter. Went for triple-pane with Low-E coating, hoping to snag some LEED points and cut down on drafts.
- What I didn’t expect: the living room got noticeably darker, especially on cloudy days. I measured about a 20% drop in light levels with my cheap lux meter - enough to make the space feel a bit gloomy unless I keep the blinds all the way up.
- Energy bills are down, but not dramatically. Maybe 10-12% in heating so far.
- The install was a pain - lots of dust, and the trim around the windows needed patching after.
- Was it worth it? For comfort (less draft, quieter), yes. For LEED points specifically, I’m not so sure. The paperwork was a hassle and I’m not convinced the resale value will change much in my neighborhood.
- Also: our dog “tested” the new cellular shades within a week... let’s just say they’re not as pet-proof as I’d hoped.
- If I did it over, I’d probably balance efficiency with natural light more carefully. The darkest rooms bug me more than I thought they would.

Did you look into any of the higher-visibility Low-E coatings before picking yours? I’ve read some let in more light but aren’t as efficient. Wondering if that tradeoff would’ve helped with the gloominess, or if it’s just the nature of triple-pane glass.

That’s a solid question. I’ve run into the same debate with clients - balancing visible light transmittance (VLT) against thermal efficiency isn’t trivial. Some of those higher-visibility Low-E coatings (like Cardinal 366 vs. 340, for example) do let in more daylight, but you’re right, they usually sacrifice a bit on the U-factor or solar heat gain coefficient. In darker climates or north-facing rooms, that extra light can make a noticeable difference in the “feel” of the space, even if the numbers on paper don’t look as strong.

Triple-pane definitely tends to be a bit gloomier, just due to the sheer amount of glass layers and coatings. I’ve seen folks try to offset that with lighter wall colors or bigger windows, but it’s never quite the same as double-pane with a high-VLT coating. Did you happen to look at any samples in person, or just go off manufacturer specs? Sometimes what looks good on paper doesn’t match how it feels day-to-day once installed... Curious if anyone’s actually regretted going for max efficiency over comfort.

Sometimes what looks good on paper doesn’t match how it feels day-to-day once installed...

That hits home. I’ve installed both triple and double pane with different coatings, and honestly, the difference in “feel” is real. Some clients love the efficiency stats, but a few have mentioned their living rooms just feel darker, even with lighter paint. Still, if you’re chasing LEED credits, it’s tough to beat triple-pane for points. It’s a balancing act - comfort vs. numbers - but I always tell folks you can’t put a price on how a space feels to live in.