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I am using 2 S7s to heat some rooms in my house. I was able to cut a hole into my hvac duct and utilize the warm air to blow into the hvac.

Below are a few pics and links to the items I bought to do this.

http://imgur.com/BPmFPK1
http://imgur.com/v5AAZH5
http://imgur.com/UEBJ4Q6
http://imgur.com/igWW4tr

The ducting I used that fits perfectly over the S7 fan and connected to the exhaust blower fan. I ran this from the miners to the a register box http://www.homedepot.com/p/Master-Flow-10-in-x-4-in-to-6-in-90-Degree-Register-Box-90RB10X4X6/100198141 . the register box was connected to the blow fan and than additional flexible duct was run to the hole in the hvac. It was sealed with foil tape. http://www.homedepot.com/p/Nashua-Tape-1-89-in-x-50-yd-322-Multi-Purpose-HVAC-Foil-Tape-1207792/100030120

http://www.homedepot.com/p/Master-Flow-6-in-x-25-ft-Insulated-Flexible-Duct-R6-Silver-Jacket-F6IFD6X300/100396935

The blow fan to suck the air from the S7s to my already existing hvac system. http://www.amazon.com/VenTech-VT-IF-6-B-Variable-Controller/dp/B005KMPN0K

EDIT

Sound Reduction Box made from scraps (looks stupid and ugly but effective)

Did this today. Was cleaning out garage and the PSU is loud (Finsky set-up, works amazing but sounds like a jet engine). My son (20 months) kept walking over to is and putting his finger on his lips and saying "shhhh"

Was bored so here it goes.....

So I decided to build a sound reduction box around the rigs and PSU to reduce the sound. This is by no means suppose to look nice, it was left over scraps. I used hvac aluminum tape, nails, screws, scrap wood and insulated with roxul safe 'n' sound insulation. http://www.homedepot.com/p/Roxul-Safe-n-Sound-3-in-x-15-1-4-in-x-47-in-Soundproofing-Stone-Wool-Insulation-12-Roll-RXSS31525/202531875 The insulation is amazing stuff, fireproof and sound reduction.

Video of roxul product under blowtorch https://www.youtube.com/watch?v=A5ipuxnIzyM

Pictures are below

http://imgur.com/um79DUE
http://imgur.com/fOECzyj
http://imgur.com/rIQxmbj
http://imgur.com/W4FJyuw
http://imgur.com/8nAQWac
http://imgur.com/X0Sg80F
http://imgur.com/c6Mapzj
http://imgur.com/foDBM0g
http://imgur.com/7K1kFt9

i dont have any s7's yet so im not sure how much air/heat they actually move , or how loud they are but wouldnt u be better off just putting them were u want the heat ?

That is a good idea. How well is it working? Does it nicely heat up your rooms?

I LOVE IT!!!  

My brother-in-law has something similar worked out on paper -- but to actually see the real deal in photo's is AWESOME!!!

I'll have to forward him a link to this thread...

Also, see if I can figure out something similar -- even though I live in Georgia and we have short winters...

Thanks for posting!!!

yea been heating 3 rooms so far keeping them around solid 68!

the noise and also I am using 240 outlet from dryer that I dont use thats in garage.

Be careful about backlogging heat in there.. Will burn up your miners.

hence the duct fan. no worries.

holy crap 68! that is insane lol. They must pump out a ton of heat to do 3 rooms.

Its gonna be rough in the summer  ;D

Ill just go back to blow out my garage during the summer. No biggie. Just wanted to utilize the heat for the winter.

Great setup!!! But what happens is summer???  :P

I have an exhaust duct in the garage I will point the miners too that will draw out the heat. My garage stays very cool during the summer

Is it underground or something??
Or you dont have really warm summers?  ;D

Well done.

Maybe I didn't understand / missed this part.  How are you pushing the air around the house?  Do you keep the furnace blower set to always on?

i was thinking the same but seems that you have been thinking on all ;) btw i never imagine that someone would use it to heat up his house, well, i had some ideas about a greenhouse, but never to use it to heat up the house, you bring me some ideas ;)

I wish that you can continue posting new images, i really want to see it 100% finished.

live in washington state near seattle. the summers get warm but with all the trees and shade my house stays cool.

I bought the house from a previous owner who had an in line duct fan put in a vent to the outside for his wood working tools so the sawdust wouldn't spread throughout the garage. I can point the miners at the in line fan that sucks the hot air to outside the house. The garage is a 2 car garage with a workshop built in, so technically a 3 car garage?

what images would you like to see? i will take some photos of the fan connected so you can see how big the fan is pushing the air into the hvac system.

this was an option I was using but the furnace blower was sucking the cool air from inside the house and pushing it back through and was cooling off the air blowing from the miners. The air was to cold to have blowing constantly.

The 470 cfm duct fan is sufficient to blow throughout the house. When i put a piece of paper or plastic in the vents in the rooms you can see it vibrating strongly from air flow. Also if you stand on the vents in the room they are warm to the touch from the air constantly blowing on them. The one thing that sucks now is my garage is back to being cold again lol

My house is a little over 1000 square feet. They ran the hvac system to the nearest point of each room to reduce the amount needed under the house. this allows for efficiently and less cfm to move air throughout.

If i had a bigger house (2 stories or 1500+ sq ft.) this system wouldn't work and I would have connect directly to the one rooms vent access.

http://imgur.com/HVA7gWn
http://imgur.com/mDQMI3J
http://imgur.com/NKl3PpK
http://imgur.com/eI7EfM8

I used the 6" hvac ducting. I cut a 6" hole into my hvac system using some hvac cutting tools. I got the 3 pack from home depot that has the straight cut, and left/right cuts. The location wasn't ideal because I couldn't get an angle with my large hands/arms so my wife did the majority of the cutting. I fed the ducting into the my hvac duct system about 1-2 ft without the foam lining and connected to the duct fan utilizing an hvac metal band. The 1-2 ft inside was pointed down along the normal path of air flow (without lining) but the hvac duct tubing from the entrance of my existing hvac system to the duct fan had the insulation attached. set the fan on the cut hole in the wood next to furnace, attached the elbow and ran 2 pieces of the insulated 6" tubing from the elbow to the exhaust fans of the miners. the 6" hvac flexible duct fits perfectly over the fans. I used an extra metal band for one to keep attached and used a plastic tie for the other as an insurance holder.

Tomorrow I am going to attach the hvac tubing from the miners to elbow better, the tape doesnt hold as well as I thought.

Understood.  That's a solid setup (I have a single floor ranch myself that is < 1000 sqft much like you).  So this intrigues me :)

It would work than. I tried 2 previous in duct fans with lower cfm (180 and 350) that failed miserably. This one was more expensive but moved the amount of air needed, also if the fan of the furnace is turned on you don't have to worry about adding a dampener because the cfm is sufficient.

How much extra energy do you use to take away the heat from S7?

I think even with natural convection, the heat generated by S7 can heat a room without the complex set up.

The watts to run the in line fan is the "extra" energy used to utilize the heat generated by the S7 but this allows me not to have to turn my furnace on to heat the house.

Last month my electricity bill was 180$. That was running 2 S7s and 3 S3+ (just recently sold). First winter in this house since I bought this spring so cant compare costs but I can compare some friends houses and their bills (they were interested in comparision as well).

A friend with same sq ft paid 165$ in heating, another paid 230$ and a third paid 345$ (they have a two story though). All were shocked that I was paying near the same, cheaper or way cheaper.

Nice little setup although how effective is this heating method for your home?

working just great. keeps my house between 68-69 in 4 rooms (master bedroom, living room, kitchen and main bathroom). Its not a method but really just utilizing the heat already generated by the miners to heat the house.

just ordered another 2 S7s so I will create a custom vent duct with sheet metal so all 4 (connected with flexible ducting) will be utilized to heat the house. I will see if its the same or better.

Wow, brilliant! Ive joked many times about using mining equipment as space heaters, but this is way beyond what I envisioned! Well Done!

Would a single 6" alum flex tube attached to the fan blowing directly into another room work as well.

Indeed it did. Updated with a sound reduction box. Waiting for batch 9 to arrive to add to the set-up

Like your setup mate! I'm also heating a house with miners, if u wanna check it out here's the link: https://www.youtube.com/watch?v=mfmfdEjRkWU
I badly need to insulte the room because of noise with the S7's, would you insulate the room in the video, or create a box like you did, inside the room instead?

Do you know the amount of dB your setup makes?

Thanks

Nice set-up!

Insulating the room would be easier but prob would still be louder than enclosing the S7s with an insulated box. The box is more of a hassle having to cut ports for the air to come out and air going in but would enclose the sound to a smaller area. Either would work good. Just make sure the insulation is both fireproof and sound reduction.

I did not have a dB meter to test the difference but it is incredibly quieter! (10x quieter)

goodluck!

whatever you end up doing please take pics!

Came up with a redneck solution instead, has killed the high-pitch sound, so its not a problem anymore.
What I did was basically make sure all the miners get direct cold air from the outside, which made the temps go down. And then the fans didn't have to work as hard anymore, problem solved (for now).
https://youtu.be/oabV90lx_rI

I disagree that. It is not efficient simple reason that miners will not earn money back because difficult level rising all the time and when you use example 1000w keep miners running you will get only 1000w heat. If you use air source heat pump you will get 2000-6000W heat per one 1KW so it is much more efficient for heating than running miners.

So you have to spend 2-6times more electricity when using miners compared heat pump or other efficient heater to heat house for same temperature. Keep that mind when doing calculations.

I see your point, but you can't really compare the two.
Sure, if your goal is to use as little electricity as possible to heat your house, then there are more effective ways. Insulating walls, roof, windows and burning wood comes to mind.
Throw in a heat pump in the mix and you're good to go.

But, if you eitherway are going to mine, its more efficient to use the heat, instead of just pumping it out of the house.

This is how I do it:
Family and friends are heating their houses with 1000-2000W electrical heaters. So I replace their heaters with miners. I pay half the electricity.
They get: Same heat for half the electricity price.
I get: Location to host miner, half price on electricity.

This is how you ROI a miner today  :D

I support Torepia answer on this.

The goal wasn't buying the miners to heat the house over my furnace. trust me it is far cheaper to use my gas furnace. The goal was to utilize the heat blown off the miners. Instead of blowing the heat elsewhere, I can use it to heat house.

At this stage in mining, it will take 6 months+ to get ROI mining straight bitcoin (depends on electricity cost). But most people who keep say "ROI is an issue" they refuse to mention or include the fact that reselling the miner will easily get you over your ROI. Even if you don't mine enough to get your ROI, the reselling will.

Look at prices currently on the marketplace section, ebay, craigslist, amazon, etc.

Thanks for good reply torepia and rockyforever. My first post was little bit narrow minded,sorry. I am using miners as well to heat my house. I want to be part of network and collect some acknowledge about how bitcoin works and that's why I am mining right now. Heat it just extra that I use for. I have 2 x antminer s3, 2 x antminer s5, 1 x Dragon 1THs and one bitmain.ch 600ghs. Overall 5Ths hashpower and those keep warm my whole house (100m2) and garage. Here is about -5 to -35C degrees outside so all heat coming for purpose in winter time. Antminer S5s are good for garage because those are little bit a noisy there it won't trouble and S3s are good for bedrooms because those are quiet even running overclocked. I paid about 1200e for all these and those have been mined for 500e after I got those, electricity bill is about 70-100e bigger than normally but now I keep garage plus degrees normally won't, so electricity bill is about the same now if you compare that heat for the garage what I still need. Let's see what happens after halfing that should I go to buy heat pump and keep only S5 running in the garage.

I have my S7s blowing in through my HVAC and now have 3 Avalon 4.1 I bought from Droid in my house. My house is now too hot lol, I have to open the windows now in my house even though its 35f outside

I've just switched on a 2nd hand S1 in the cheapo version of the project.
Seeing the coldest nights of the year forecast for the w/e and plenty of sun for the solar panels, A little bit of extra heat is useful to me.

Unlike the writer, who is using an efficient S7, I'm sometimes using an old S1.  The quantity of bitcoin/Watt made is 10x less; the bitcoin mining is only a by-product of using a 2nd hand miner for heating.

umm why? please explain. If your referring to the insulation you didnt read or click on the links provided.

Older (read broken in) miners are safer to use if the exhaust is going to be inhaled directly.  If the heat is exchanged then there is no issue.

Newer miners (or any electronics for that matter) will give off more volatile chemicals when heated so consider that if you want to heat your house.  I won't say they'll cause cancer at a certainty but they are definitely not safe at higher concentrations.

BS WARNING ! BS WARNING ! BS WARNING ! BS WARNING ! BS WARNING !
So how many deaths and incurable diseases per million population would you expect from fumes from an S7 and how does that compare to the fumes from other heat sources such as a new fridge or a new microwave oven or a new coal fire ?

hey guys...i have a question about this s7 antminer

I have ordered 2 from bitmain batch9 starting to deliver on 20 Jan,SO my question is :

Can you sleep in the same room with 2 s7 antminers working ?:) how loud are they realy?

I don't have any S7; only the S1 which is a two year older design, so take this with a pinch of salt and let us know how you get on.
The S7 differs from the S1 in having push-pull twin fans, which should make it quieter for a given heat output, tri blade design (smaller fins) which should necessitate faster airflow, and 1300 Watts power in place of 360 Watts.  That is, I'd expect it to sound like too much of a jet turbine to try to sleep next to it.  It would be safe, just noisy.

On my S1, fans typically end up at 2000 rpm in normal weather increasing to 3600 rpm in warm conditions.  It is only quieter than that in the first half hour before it has warmed up or if underclocked to 2/3 of its design hashing rate.

I have slept in the same room as my running S1 without problem but usually prefer to shut the door on it because it is a little louder than the cooling fans of a server.

The other consideration is what to do with 2.6kW of heat, which is about the same as an electric oven.  Those tend to have a vent bashed through the brickwork and still make the room rather warm if used for a few hours.

They are loud. Small jet engine. That insulated duct I linked has a bigger version (8x25, 10x25, 12x25). I can't remember which works perfect but Philip listed one that you can stick inside which will reduce the noise incredibly.

Which PSUs are you going to use? If you use the 1300 G2 that thing is quiet but if you use the 2880 ones they are too loud. The 4k package from finsky is quiet as heck but needs 208V + outlet, the 1300 G@ EVGA only needs 120v outlet.

If you want a really quiet miner the Avalon 4.1 is quiet and can heat a room nicely. You can find them on Ebay or the marketplace section. They only do 1th/s but they are WAY quieter than the S5 which is comparable.

you know the thing is that this is the main problem I have made the order for 2 PSU 1600 bitmain stuff for 140$ each,im guessing those are gonna be louder that the miner itself:)?
does any one know for sure?please would be realy helpfull

Just as loud as the miner. Not much to quiet both unless you stick in that insulated duct but even then that is lots of noise

shit...ok thanks for you support guys !appreciate it

I just found your post, really nice setup! I have been working on a similar project and loving the free heat off of it.

Where are your miners pulling the air from? Are you basically circulating inside house air or pulling fresh outside air?

Air is being pulled from inside the garage. I have vents on the far wall that let the air inside the garage. Stays around 45 F inside the garage at all times and during the summer doesn't exceed 55 F. Its a 2 car garage with room for my workbench and storage. So pretty big area to pull air from.

So the air is coming from the house? I am asking because it would be more efficient to pull from the house vs the out side air.

Air from the garage, 2 vents on far wall allowed air to move freely in garage

Pulling the air from inside the house, to heat a house. Wouldn't that make the air quality poor? I guess there is a reason why we have vents? :P

thats scary actually.. air from you cars exhaust and engine fluids being heated/burned etc

you must be taking precautions or you wouldnt be alive to post.. or never run engines (the obvious answer)

yeah the heating that is done from device like asic is not healthy at all, there are case of guy running his miners inside is room where he sleep, and he had health problem at the end

That has nothing to do with air quality, but with temperature. The story is here (http://www.belial.pt/permanent-brain-damage-from-bitcoin-mining). cryptotore was solely talking about air quality. That being said, that can probably be overcome with air filters, which are probably in place given the setup OP has :)

No one would be alive if they ran there car with the garage door shut. Not sure if I should even answer this obvious question.

I am still unclear by their question. I will try to break down barney style.

free flowing air (from the outside, not being pulled just flows in naturally through vents) comes into the garage from 2 vents. This air circulates in garage and the miners pull from this air. The air is from the outside which is cold (45 F currently) which keeps the miners running below 50 C. The miners blow into my HVAC system which is already supplied with air filters.

Please read previous comments. The air blow is not any more dangerous/not dangerous than the fan blows from a microwave, computer... etc. Think common sense please.

I love the ingenuity and creativeness that you have put into this project.  Really embracing what bitcoin is.  I also really like the idea and have a few questions.

It seems like you have been running for a bit, have you noticed you furnace having to turn on at all? Or is the heat from the miners enough to heat your entire house?
If you don't mind me asking, how big of a house are you heating?
You said you had to cut into the ducts, if you ever decided to stop doing this (say summer) or sold the house, is that something that is easily fixed by just putting a piece of metal over where you cut in?

Thanks for the answers, like I said, I really like the project and could see myself doing something similar.

1000 squ ft I am heating. It was keeping the house at 68 until temperatures dropped to below 30 F. I now have 3 Avalon 4.1 in the house (2 running in living room and one in guest bedroom), that combo is keeping my house above 72 F which is too warm so I have almost all the windows cracked. I am currently selling 2 of the Avalons since its too warm and temps outside have risen so the 2 S7s will be plenty until summer.

The duct I cut an 8 inch hole. It will be easy to cover with some metal. I can either attach some small screws or special glue for duct work. Its easy fix.

the hot air moved by the fan from the asic is not healthy, so yes it has to do with the air, because those part from the asic, when the temperature is high enough they begin to release some particles from the combustion of the pond

not to mention the air moved is full of dust...

Yeah, if you are heating your room with air wich is just going out from a device and filling all the room the air quality will be poor and you'll have headaches or even worse problems with your health.

I think you should make the hot air go through a metal (not heat-insulated) vent tubes and thus they'll heat your room just like radiators do.

You are correct but by just using a high quality 3 inch media filter (whole house filter) you can totally reduce any contaminants by 99% or more. My HVAC engineer friend who has set up hundreds of server rooms in RTP (Research Triangle Park), help me with my setup and this was one of concern's that was addressed.

You want me to cite incidence and prevalence of VOC induced disease states?  Why don't you do the homework and post it?

I've bought 2 new fridges in the last 20 years.  I have bought over 500 video cards and 100 miners in just the last 5 - nice troll though  ::)

I think he also changed your original text - quoted for advanced trolling technique citing lol.

When I was running my card farm I could definitely smell the chemicals but then again I was pushing them hard to near 90C and had over 100 cards going.  Don't know if I would want to be breathing all that in days on end.

Hm, I haven't thought about that, a high quality filter might solve the problem. IMO that's actually much better than turning the vent tubes into radiators like I proposed. Nice decision. Good luck with your mining!

Came up with a redneck solution instead, has killed the high-pitch sound, so its not a problem anymore.
What I did was basically make sure all the miners get direct cold air from the outside, which made the temps go down. And then the fans didn't have to work as hard anymore, problem solved (for now).

I'm heating my 1800 sq ft home with 4 s7's and it's wonderful. I live in central Canada and it's been a warm winter thus far but I have not had to use my other heat sources yet this year even when temps go down to -29 with windchill. Very simple to get the heat into house.. i run s7's in vertical position and have a 16' flexible tube that moves the heat to upper level where i can store it or use it by simply turning on a fan on.
  The noise of the psu's is a work in progress but have got it down where it is "wife approved" lol

These 4 s7's not only pay for power bill and I get 100% heat recovery.. they pay for my mortgage and bills as well

Do you put 1 S7 in each room so that the heat is distributed evenly? If you put them together and use a distributor, it will incur extra cost.

That's not feasible with the noise, outlets, or wires and he mentioned his wife (I have the same issues). It would be amazing to run a miner in each room but normal house outlets (among all the other things plugged in) isn't an option. Running Ethernet cables to each room, reducing the noise of each miner in a room, running a PSU for each, etc, etc.