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Author Topic: new heater  (Read 808 times)

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Offline Klunker

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new heater
« on: November 13, 2017, 01:22:32 am »
built a new house that took way longer than it should (incompetent builder).
Incorporated into the build was a 2 story masonry heater.
I've burned wood for many years as supplemental heat for home with a vermont casting wood stove.
biggest downside was inability too keep heat down while keeping fire going. so we only ran it when it was relatively cold (15F or less).
that and the need to keep feeding the fire every 4 hours or so.
So for our new place I decided upon putting in a masonry heater.
our new place is roughly 1900 sq ft on 1st floor and 800 sqft on 2nd.
insulated very well, r35ish on walls, r60 ceiling, triple pane windows, r24 on foundation and SIP construction so it should be relative air tight.

so I thought I'd do a post on what I find and how much wood I use to heat the house.
we just started the heater up about 3 weeks ago, you are supposed to gradually increase wood usage till you reach max load in over about 3 wks time.

max load is 60lbs. I'm at about 38. for the most part the heater is heating the house by itself right now altho I'd like it to be a bit warmer than it is. so I have more wood that I can burn. the warmest we have gotten is 69F. temps outside have been colder than usual for this time of year. last week has been 30's day, 20's at night for the most part with a couple of colder days/nights.

I have to say tho that 66-68 deg in this house feels a lot warmer than the same temps at the old 40 year old house.

I have a infrared therm. that I check heater temps with.
I have discovered the following.
1) a burn has flames for about 1 1/4 hrs, red coals for less than 2 hrs. so I cut air off at about 1 1/2-1 3/4 hrs.
2) it takes about 5-6 hrs from start of fire till the exterior brick reaches max temp then it drops about 3-4 deg F/hr.
3) everyday the heater is building more heat, it does not cool down to where it was the previous day and it reaches new high temps everyday.

some early thoughts.
I kinda miss the "extreme" heat of the woodstove (80's in the room with the heater.) I'm sure that when I'm burning max loads it'll be much warmer in new place. and I can burn 3x a day for max heat if I have to. that would be 180lbs/day.

I don't miss the big variance of temps that the old place had. upper 40's in the basement, 80's in the room with the heater and 60's upstairs. the new place is within 5 degrees everywhere including the basement.

I love the once a day burn, keeps house clean, uses a lot less wood.

I've got about 1.3 cords stocked away in the house garage for this winter with lots more stored covered else where. So I'll keep an eye on how much i burn in cords at the end of a year. Less than 2 cords I hope.

any questions fire away. ohh, is that a pun?


Offline 62oliver

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Re: new heater
« Reply #1 on: November 13, 2017, 02:24:11 am »
What kind of heater, custom built or a pre-fab type?
I was kind of interested in those soap stone ones made in Finland.
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Offline thecfarm

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Re: new heater
« Reply #2 on: November 13, 2017, 06:18:17 am »
Is that a big mass of stone,cement? Does the smoke go up towards the chimmey in channels,for no better word? And last pictures?  :)
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Online Crusarius

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Re: new heater
« Reply #3 on: November 13, 2017, 07:41:51 am »
My house is slab on grade with radiant floor heat. I do have a wood stove to supplement. I do agree with your missing the hot stove comment. Sometimes its really nice to come in from plowing the driveway and just stand next to a nice hot wood stove :)
I knew what I thought I meant.

Offline Klunker

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Re: new heater
« Reply #4 on: November 13, 2017, 09:24:34 am »



this is a custom built masonry heater, the mass is brick.
the smoke winds it way thru the mass.
up, down, over every which way thru the flue.
first couple of times I lit a fire in it the draw was weak. smoke was coming out until it finally got enough of a draw. now that the thing is warm all the time it draws very good.

here is pictures (if I got this figured out right) of the 1st floor which has the firebox and a white oven.

Offline Klunker

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Re: new heater
« Reply #5 on: November 13, 2017, 09:27:53 am »

Offline thecfarm

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Re: new heater
« Reply #6 on: November 13, 2017, 06:50:58 pm »
Looks good!!!
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Offline peterpaul

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Re: new heater
« Reply #7 on: November 27, 2017, 09:17:18 pm »
We also have a MH which we love ( some pic's are in my gallery).  Is your hearth (bench) heated?  I find that our heater will not heat our house to comfortable temps when the outside temp is below 15-20 degrees. I burn the heater twice a day with approximately 60lbs/burn (dry, seasoned mixed hardwood) morning and night.  Our oven can be white or black.  We burn on avg. about 4 cords (128 cu.ft.) per year, mid Oct. to mid Apr.  We fired ours up Dec. 3, 2008.  Our house is +/-4000 sq.ft. 
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Offline woodmills1

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Re: new heater
« Reply #8 on: November 28, 2017, 07:29:40 pm »
very nice looking stove you have there, just showed the lovely Mrs., she says so too.
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Offline Klunker

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Re: new heater
« Reply #9 on: December 07, 2017, 12:38:03 am »
We also have a MH which we love ( some pic's are in my gallery).  Is your hearth (bench) heated?  I find that our heater will not heat our house to comfortable temps when the outside temp is below 15-20 degrees. I burn the heater twice a day with approximately 60lbs/burn (dry, seasoned mixed hardwood) morning and night.  Our oven can be white or black.  We burn on avg. about 4 cords (128 cu.ft.) per year, mid Oct. to mid Apr.  We fired ours up Dec. 3, 2008.  Our house is +/-4000 sq.ft.
Yes, bench is heated as is 2nd floor bench.

WOW, only 4 cords to heat a 4000 sq ft house. Thats really good.
I'm hoping to use approx 2 cords all winter.


Offline Klunker

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Re: new heater
« Reply #10 on: December 07, 2017, 12:43:18 am »
Peterpaul, looked at your gallery, really nice!!, is yours soapstone and granite?
Yours is truly a visual masterpiece!!
I was looking at using soapstone for mine but the cost is high in this area it has to be trucked in from out east.
I ended up with brick and limestone.

Offline jdonovan

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Re: new heater
« Reply #11 on: December 07, 2017, 08:04:57 am »
Looks like Peterpaul's stove is a soap stone tulikivi.