In mid November of 2013, I lit my brand new Keystoker Koker 160 For the first time and the blue flames have been dancing ever since. So far, I have been very pleased for the most part with both my stoker and coal heating in general. I am heating my 2400 SQ ft colonial built in 2005, with a full walk out basement. Total square footage heated including 1400SQ ft basement is 3800. My basement is of the poured wall type, with foam insulation below grade and under slab. The house is built with 6 inch walls with R23 fiberglass insulation, and blown in R38 in the attic. I was using radiant electric base board heat up until my Stoker, So my duct system is still a work in progress. I currently have 3 registers every 16 or so ft on the first floor back wall of our house, which is our kitchen and main living areas. The floor plan is pretty open. I do not currently have any ducts upstairs yet, but I do have a 2 story open foyer that gets some heat up their. The basement is heated strictly by heat radiated off of the stove and 20x20 x40 plenum, as well as 30ft of 8x20 duct for the first floor.
Up until mid December, where temps were pretty normal for our area, My thermostat settings and fuel usage averaged out to the following.
Thermostat setting 74 F
Actual first floor Temp 72F
Temperature fluctuation, + - 1.5 degree F
Average fuel consumption per day 56lbs. [Rice] [24 hrs.]
Average per month 1750 Lbs.
Draft reading 4-5.5
Stoker feed setting , 6 3/4 out
Convection blower on time per hr avg. 15min.
Basement avg temp [Radiant only] 69 F
This is my data from late December till present. Most days were single digit temps with most nights zero or below.
Thermostat setting 74F
Actual first floor temp 72F
Temperature fluctuation + - 1 degree F
Average fuel consumption per day 76 lb rice [24hrs.]
Average per month 2,280lbs
Draft reading 4-6
Stoker feed screw setting 6 3/4 out
Convection blower on time per hr avg 23 min.
Basement temp avg Radiant only] 71 F
This time last year I was averaging 6500 KW hr of electricity usage per month. currently I am averaging around 2000 KW hr.
I am very impressed with the heat output of the Koker, as well as the fuel consumption. I am never going back to electric heat !!!! Complaints..... Just a couple. The feed screw needs to be adjusted every month or so as it somehow backs out and the house starts to cool off. Usualy have to turn it back in 2 to 3.5 turns to get back to the desired 6 3/4 out. Not sure what is up with that, but will look harder at it when I shut it down for the season. Next, this thing makes an enormous amount of ash. I fill a 50 gallon steel trash can in about 7 days. Good thing I have acreage to lose it, a front end loader and a walk out basement lol. Other than those two small items, it is awesome !!!!!!