Keystoker Koker 160 Poll

Hi, trying to plan how much coal I'll actually use. I have read so many different pounds of coal being burned on average...anywhere from 20 pounds per day to over 100 pounds per day...I know that temperature outside is the factor but wanted to see what fellow koker users have really been averaging....especially when the stove is idle over a 24 hour period or when temps are in the 20's and teens.

By the way without this site I would be lost. It is awesome.

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Appreciate your koker useage feedback and thank you!

Hi jrn,i bought a koker last season.we used 4 ton of coal but unit was not connected to cold air return.most will tell you that connecting to cold air return is more efficient and I will have a better opinion after this season.i was told that I would use 2 1/2 to 3 tons bought 4 and used it all.we were nice and warm all winter though and not dissatisfied with result,just used about 1 ton more than expected. nice warm heat and alot cheaper than oil.

Hi jrn, there are way too many variables in your request.. you really need to get some common items nailed down.

Size of house, that is the heated Square Feet of living space.
Insulation and Windows.. Good, up-to-date windows and good insulation can make a 2x or 3x difference in heat use.
Type of instalation.. like mentioned above.. is the Koker hooked up like a furnace, or more like a stove??

You can idle down most of this type of stoker feed to about 20# per day, just to keep the fire going, and maybe generate some DHW if the Koker has a hot water 'coil' installed.

From there, I'd say you can go all the way to 150# per day or maybe more, depending on coal quality and the items I've listed above..

The best way to estimate is to compare to your previous fuel use.. if it was oil, 180 gallons per ton of coal is pretty close. Providing the coal instalation is reasonably efficient. There are several fuel calculators listed on the site.. start a new Topic for fuel comparisons..

Example: there are several members with boilers who heat a 4000 sqft modern house on 4-5 tons per year... I burn 10-12 tons per year to heat my 4100 sqft farmhouse.. it has marginal windows and insulation.. and I can't do much about it without bulldozing the house.

Greg L.

ok, sorry, here ya go....

2100 sf 50 year old rock/plaster house with all new windows and doors...quite tight.
Burned 612 gals of #2 heating oil last year
Burning Blaschak
Koker tied into furnace cold air as well as heating duck all in basement
Coal Trol with the stoker
keep temp in house at 72 and 68 at night.

Looking for feedback on what koker users are actually using on warm days, cold days. idle...with a similar setup or any feedback is welcome!

Thanks

612 gallons is equal to about 3.5 tons of coal. 1 ton of coal for every 180 gallons of oil. So you should be safe with picking up 4 tons and letting your house be a little warmer this winter.