Paul Ladendorf: Hi Scott. Great design and video. My concern with this system is with
pressured treated wood and painted downspouts in a unit that is getting up
to 150 degrees, I wonder about off gassing of chemicals and air quality.
Have you considered that?
G. Scott Davis: Hi Simon, for some reason I know longer have a reply link. Anyway, for
night time heating with solar you'll need some thermal storage. Please see
my thermal storage video for more details.
Ralph Marlow: After looking at lowes the price for aluminum downspout in my area is $50
for a ten foot section. Wish I had invested in a bunch of that stuff when
the price was 5 times less.
Jason Hurtado Daniels: *Aluminum Downspout Hot Air Solar Collector Construction*
john doe: I noticed that your inlet heat is 58 degrees from 9am to 3pm...that tells
me your heater aint working! If your heater was working wouldn't the inlet
Jason Hurtado Daniels: *Aluminum Downspout Hot Air Solar Collector Construction*
WSPSkydiver: Job well done! It's seems to be a very nice design.
Assuming you're still using this (almost 4 years based on posted video
date), have you noticed a cost savings in heating your home? I'd like to
start a project like this, but I'd like some information on long term usage
from you serious DIY builders. Thanks!
kricotas: very nice!!!
felibr adone: Nice project, but do NOT use plastic with heat. Very canceriginous.
Saeid Momtahan: Hi Scott. Thanks for the great videos. WHen you provide a link on your
video, you can click the box' open in new window'. That way your viewers
won't be diverted from the video they are watching and can finish it b4
watching your other video.
Eddy Rivera: Is there any safety reasons to not build a solar collector directly into
the framing of your house. (Assuming you're either building from scratch or
fixing up a home.)
Thanks in advance Scott!
JazzTree78: Awesome. Both Projects.
Scott really did a good job of insulating the frames and even the pipes in
the ground. Also, the flashing on the inside. His fans look like they may
be 12 volt and thus solar powered, which would be the ultimate free heat.
The damper is crucial too. Once the sun is gone, these turn into heat
extractors instead of heat producers. I like how you've got it heating the
basement, which heats the floor and the heat just migrates gently upwards.
Kent Hall: AWESOME information!
jerry casey: will this still work with out fans
manwithgills: I wonder if you could get more heat retention if you rolled up the aluminum
screen and placed it inside the downspout (like baffles inside a muffler).
SOLARCELLS101: Nice Video , and great looking solar hot air heater
I'm looking to build one in the next year or two,
Richard Sims: Getting ready to build my first solar collector. Getting excited to start
experimenting and glad for all your input.
I am considering combining water and air collecting within same panel. I am
sure someone has tried it already. Any input for combining the two ? good
Also planning on pouring concrete panels to connect hot water pipes for
thermal mass storage. Big enough to be of thermal value and still be
J Battler: I went to your website and get ads from an oil company pushing the most
environmentally disastrous projects we've seen in decades. Northern
Gateway makes a joke of your statement about "looking after the
environment". That finished me on your credibility/integrity. Nice solar
Andy Fetisov: It would move more air if you have it blow into the intake.
Thom Westergren: Have you collected any data on actual amount of savings you've achieved?
mel porter: That's a brilliant way of collecting virtually free heating for your house,
except if you live where i do, cold and almost always cloudy and rainy
william warren: Where do you get the fans & snap switches & Temp probes for the water
storage tank on your other vedio?
Ronnie Pace: I cannot tell you how much I truly enjoyed your ingenuity and sharing of
this knowledge. Thank you SO much! I have one question. How would I
figure out the angle I would need for my panels if i live in New Mexico at
Tim Miller: yippee so easy for heat
SOLARCELLS101: I just Subscribed to you channels , some great info
David and God Bless
Peter Piper: What do you do in the summer to keep this black monstrosity from
accumulating so much heat from the sun?
Ngaire Genge: Hi! Thanks much for the great videos, really enjoying them! I have just a
couple practical sort of questions. First, does it snow where you are? I
live in southeast Canada, we get snow. A unit resting atop my window wells
would disappear with the first snow! :) I assume it would be equally
efficient mounted higher? Second, our residential code wouldn't allow us to
block basement windows. They're considered important fire escape points.
Any alternate suggestions? Thanks again!
G. Scott Davis: @Yourbadnightmare Hi Rick, From what I have read, air behaves more
cooperatively pulled than pushed. If I remember right, the fan is rated at
something like 130F, so while I'm at the upper end of its range at times,
I'm not usually exceeding it. Thanks for your interest and kind words! Scott
SailaSobriquet: Great video, Scott! Thanks!
G. Scott Davis: Hi Grezegorz. There are folks on the SimplySolar group experimenting with
hybrid panels, attaching CPVC or copper pipe to the downspouts to heat
fluid as well. You can use the fluid to heat your thermal storage tank and
circulate your town water though it before it reaches your regular hot
water heater. Please see my thermal storage tank video for details.
david wilson: Thanks Scott for all the great ideas. Is that a radon fan. Thanks again for
all your vid's. David
G. Scott Davis: @hootiemcgrudy2 Hi, that is a Snap Switch. They are only about $6.00, which
I got separately. Youtube won't let me post links here, but if you join
SimplySolar I'll tell you where to find them. The fan is powered by
conventional house current. Fans draw very little power. To size your fan,
you want about 3 CFM of air per square foot of collector.
G. Scott Davis: @justinmy300z Hi, I didn't see this idea anywhere before my son Brad and I
came up with it a few years ago and built ours. I certainly would have
given credit otherwise, as I credited Gary with the pex collector design
that I built and as I credited Mike for the coroplast collector I'm
considering. In this case, great minds think alike! Congratulations on a
jakhammers world: i saw this first on Build it Solar. Nice video to go with the write up from
G. Scott Davis: Sounds like a great project Norm. Please join our Simply Solar forum, share
some pictures and tell us what develops in the Member Projects section!
G. Scott Davis: Hi Grandpa Bill. Youtube won't let me post links, but I can share if you
join us on Simply solar. If you go to Pex Supply, you will find them there.
They are only $6.00.
orignalbuckaroo: Hi Scott, TNX so much for this well done video !!! I wonder if this system
would be good enough for a 24X 32 garage ??? TNX again Scott
huey216: Hi Scott. Great videos thanks. I am in PA and just completed a collector
that is mid way in size between yours and Scott Smith's being 24x2 with
four aluminium spouts using Scott Smith's plenum design. I wish I had the
entry / exits at the back panel as the collector adjusts 26 - 60 deg. What
have you found to be the best air gap between spouts and glazing? I have
used flex-o-pane for cost, which is really clear but either sucks in or
out, depending on + or - fan. Spouts aren't airtight I think.
G. Scott Davis: @josephdupont I don't recall the specs. Maybe 80 watts?
oxenpaul: Well explained! (now we have to figure out how people not named Scott can
build them :^) At first I was worried that you were pumping basement air
into the living space and worried about radon gas. But just warming the
basement and then letting the heat radiate up is a lovely, thrifty and safe
move. Are there condensation issues? Also I'd be tempted to rotate the
downspout materials 45 degrees (long axis) to present a corner to the sun
(and any reflections into a neighboring downspout wall...
blipco5: Scott, nice job on the low profile collector but if you're worried about
street appearance you might want to trim those weeds. Just sayin'.
fundude53: been looking at solar water heaters and your use of black down pipes really
inspired me its so simple its almost genius. thanks for shareing.
Daniel Reis: Really good project mate! I'm planning on doing something similar. Could
you please tell me where did you bought the fan? A reference number or an
ebay link would be great! Thank you :)
42lookc: Excellent video, Scott--thanks! I've always wanted to build my own solar
collector for the fun and the savings of it. This summer I bought a
fair-sized quantity (maybe 100 feet) of the larger size new downspouting at
an auction sale for $10.00 for all of it. I don't usually buy stuff just to
take up space, but that was too cheap to say no. It's been sitting around
waiting for something good to do with it, and now I know just what! Thanks
marz3335: How do you deal with snow on a collector right on the ground like that? You
videos are excellent -- very instructive.
Charles Sargent: Hi Scott, Could you give info on how and where you purchased your blowers
in Aluminum Downspout Hot Air Solar Collectors?
G. Scott Davis: Thanks for your kind words!
Mico M: Hi I really like your set up. I live in Edmonton, Alberta, Canada. I would
like to build a system like yours, but I don't know if it will work well
here. We sometimes get down to -30 deg. Celsius. What kind of insulation
should I use and should I put it in the box, the. Cover it with Masonite to
protect the insulation from heat within the box. What do I do with it in
the summer months when I don't need the heat. If I turn the fan off for the
summer months will it ruin the box. Where did you get
fuzzyBoy1000: Hi scott, my name is Rob, i live in Sandy City UT. thats part of the Salt
Lake Valley. We don't get as cold as you do in the winter but it still
takes a toll on the utility bills. I have a question. How hot can wood and
insulation get before melt down and fire? I am designing my own heater that
i think will get much hotter than most i see on u tube but i don't need a
fire or burn my blowers up.
Walt Donaldson: I am in the process of building a small cabin in Maine, off grid, and am
considering this type of system to keep a room for water storage above
freezing during the winter months. The room will be attached to the cabin,
but not within. What are your thoughts about combining this with a small
solar system that will power the fans with 12v battery? Also, is there a
way to have it start and stop automatically based on the temp like a