New furnace ( kuuma vapor fire 100) and new member here.

[brenndatomu]

Electric radiant is a good idea, but up in the ceiling...really? I suppose if you had REALLY good insulation in the attic maybe.
As far as backup heat, you might look at mini split heat pumps... they've gotten pretty darn efficient, pretty good even at low outdoor temps.
Look around here on hearth, there's a bunch of heat pump info from knowledgeable experienced people.

have only used about 1 chord this winter so far so definitely impressive

Wow, not bad...we average about 1/3 cord per 2 weeks...a lil more when real cold, less on warmer days...seems to average out to about 4.5 cords/year generally.

 

[salecker]

Roof insulation is so important.
i have R 120 and R 84 in my roof
the only melt from the roof is when the outside temp goes above freezing.
I use 8 cords of spruce during the average winter

 

[R Henderson]

Electric radiant is a good idea, but up in the ceiling...really? I suppose if you had REALLY good insulation in the attic maybe.
As far as backup heat, you might look at mini split heat pumps... they've gotten pretty darn efficient, pretty good even at low outdoor temps.
Look around here on hearth, there's a bunch of heat pump info from knowledgeable experienced people.

Wow, not bad...we average about 1/3 cord per 2 weeks...a lil more when real cold, less on warmer days...seems to average out to about 4.5 cords/year generally.

Yes I don't know why but that's how it was built and the attic was blown in when it was built I keep meaning to climb up and look as I'm sure it's settled significantly contributing to my heat loss. A lot of work but mother and I live here and I'm trying to get the house back in shape where she doesn't have to worry about it.

I did look into the mini splits as in the next few years or so I am looking at building a 900ish sq ft. Basement style house on the property nearby and was tossing around boiler either wood fired or LP for floor heat and not skimping on insulation. I don't really need a big house like our current one, that's a big reason I went with the kuuma so it would be user friendly for the family to use and me being nearby could easily keep it going with how my loading schedule has been this first year.

 

[JRHAWK9]

Roof insulation is so important.

yep!! I know this because we have very little, mostly due to the style of the house.

 

[R Henderson]

Hopefully this is the right spot to ask this question adding it to my previous thread. My furnace installation included having my AC A coil inside the plenum ( only one plenum and duct lines for the house). How would I connect my old two wire dial thermostat (4th pic) to use the kuumas blower for my AC. I did install the the thermostat that came with the kuuma and installed it correctly where it triggers high blower speed. However located nearby I left the old thermostat in place to use for AC only. With the old wood furnace that thermostat controlled both heat and AC.

1st pic is how I wired the VF for heat.
2nd pic is the wire that goes towards my outside AC unit.
3rd pic is the two wires coming from the old thermostat that I will be using for AC.

My HVAC guy spoke with lammpa and they said it was possible to make it work (I'm not sure who exactly he spoke with) but he told me he was waiting to hear back from lammpa on the correct way to wire it. However it will be two weeks this Tuesday since I've heard back from HVAC guy kind of surprised because I didn't pay anything yet I offered as he was here for a hour or two that day. Does anybody else have a similar setup? It's summer time in Southern Missouri and it's hot currently 91 in the house at 11pm windows open with fans dropping to to chilly 80 degrees overnight! Humidity is hovering around 72

 

[brenndatomu]

All you need to do is wire the old tstat in so it can trigger the blower to run high speed when it kicks the ac on... any HVAC guy worth his salt should easily be able to do that. Get on the Kuuma website and scroll down the VF list, there is a tab for the VF wiring diagram (in your owners manual too, but website in color, so easier)
In the meantime, if you want to cool the house off, push the white button in on the fan limit switch on the plenum, then use your old tstat to run ac...you will have to stop/start the blower manually with white button

 

[brenndatomu]

Wiring diagram...

https://www.lamppakuuma.com/wp-content/uploads/2018/10/VF100-Electrical-diagram.pdf