P 61 output levels.

[Spaz]

Just curious if any one can break down the BTUs that a P61 puts out at the 7 different levels. 1-7 I'm seriously looking at a heat pump, and this would help me determine what size I'd need.

 

[Dataman]

I put in Harmon XXV back in 2018 and Cold Temp Heat Pump in April this year. Have yet to fire up Pellet Stove. Heat Pump is good for -20f, plan on using it until about 0f. It's great. Cheaper than pellets. (Midea G3 Evox). At overnight temps of 30f about 9kw used for Heating best I can determine with Four 5k Electric Heaters in couple of outbuildings. Harmon had to run max out when it gets -20f (about once a heating season for week). Chewed thru pellets, 2-3 bags daily. Nice not using any pellets now.

I run the Harmon at 3 and leave it alone. The Probe will do all the magic. I run in Manual and Room Temp set for 74f. This year it's not going to get a lot of use and in the future. We normally would have burned 1 Ton of Pellets this far into season. Zero Burned.

150kw used last 24 hours, with most of it all those Electric Heaters and Hot Water and 2 Freezers and Fridges. Wife's small show pictured. Happy Wife, Happy Life!

But since Harmon uses probe in Exhaust to keep temp.

To answer your question we need more info. What size House? I have 2500 sq ft with about 2000sq ft and rest in basement. We used to use electric space heater down there protect UtilityRoom from Freezing. Plan on still doing that if it gets below 0f. Easier to pay for Kw than Plumer and all the Drama.

Harmon XXV is about 48k btu. But you can look at the specs. You can always run Pellet Stove at lower setting. Not possible to get more heat than it can produce. Buy more than you need just incase. Where you live helps us determine recommendations.

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[Spaz]

I'm in Nova Scotia. House is 1100 sq/ft. I any where from a bag a day to 2 bags a day when it' in the single digits f. I generally run in 4-5 setting otherwise, so with that said, convert that to BTUs needed. (Between 71-74) I'm looking at 3 ton ducted, to replace at the most 60k BTUs. I'm assuming that's on 7. This is why I'm asking. Also on 1 it burns a bag a day.

 

[Dataman]

I would go 3 Ton Heat Pump. No less than 2.5 Ton. With Electric Strip supplement for it if you have the Kw. Jury is still out for Very Low Temp with Heat Pump for me. 24f is the lowest so far this Season. 30k Btu would be good place to be. https://thefurnaceoutlet.com/blogs/...eat-pump-systems-what-homeowners-need-to-know

 

[Spaz]

I'm in Nova Scotia. House is 1100 sq/ft. I any where from a bag a day to 2 bags a day when it' in the single digits f. I generally run in 4-5 setting otherwise, so with that said, convert that to BTUs needed. I'm looking at 3 ton ducted, to replace at the most 60k BTUs. I'm assuming that's on 7. This is why I'm asking. Also on 1 it burns a bag a day.

I would go 3 Ton Heat Pump. No less than 2.5 Ton. With Electric Strip supplement for it if you have the Kw. Jury is still out for Very Low Temp with Heat Pump for me. 24f is the lowest so far this Season. 30k Btu would be good place to be. https://thefurnaceoutlet.com/blogs/...eat-pump-systems-what-homeowners-need-to-know

 

[Spaz]

That's what imy looking at, with a 36k electric back up. I can always turn the Harman on.

 

[Dataman]

Let us know what you get and how it works out. So far using Heat Pump instead of Harmon Pellet Stove has been good. Very quiet in house with no Pellet Stove Fans or Box Fans.

I put in Washable Filters for our Heat Pump. Few hundred more but no throwing away expensive paper filters (5" ones). Plus Remy LED for dust control. Amazing how little dust in the air when sunbeam lights it up. Make sure of your filter box size. Mine has inside lips to keep the filter in place and room to wiggle on size.

https://neverbuyanotherfilter.com/ - 16 - 19 3/4 - 4 3/8

HALO-LED® Whole Home In-Duct Air Purifier - RGF Environmental Group

HALO-LED® Whole Home In-Duct Air Purifier

rgf.com

 

[Spaz]

I would go 3 Ton Heat Pump. No less than 2.5 Ton. With Electric Strip supplement for it if you have the Kw. Jury is still out for Very Low Temp with Heat Pump for me. 24f is the lowest so far this Season. 30k Btu would be good place to be. https://thefurnaceoutlet.com/blogs/...eat-pump-systems-what-homeowners-need-to-know

You live in the banana belt. 24f is barely the high here in the winter. Started out today at 5f high forecast 17f. 👍

 

[Washed-Up]

Say could you post some photos over your stove layout? The room it’s in pinned out etc?

 

[Spaz]

Say could you post some photos over your stove layout? The room it’s in pinned out etc?

What do mean by pinned out? I can scribble out a picture by hand. My biggest problem is getting heat equally around the house. I have a floor fan and a ceiling fan in the kitchen where it's located. The ceiling fan is blowing down and the floor fan is in a doorway on the floor sucking cold air from the back room, which is 5f colder then the front. The front also feeds the upstairs via the stairs. The kitchen is in the middle of the house. It has two large doorways at both ends allowing good circulation, but the stove is behind the wall separating it from the back room, where as the one to the front is getting hot air blowing directly to it. I've attached a shot looking from the back to the front. The stove is to the left around the corner. The back room is twice the size of the front and is used all day. The front is only used at night.

 

[Spaz]

I've also got the grant to go to heat pumps, I'm in the process of getting the contractor in to measure out the pipes etc. it's not going to cost me a dime. Unfortunately the panel upgrade to 200 amps can't happen until I can have the power off for a day ( means May at the earliest). I'm getting tired of the fan noise, the dust and having to readjust the temperature on the stove. Not to mention humping the bags in. The house has a full oil furnace in it which will be ripped out and the ducting upgraded to allow proper flow. Even if it costs me the same, it will spread heat much better around the house. I've also been told I can hook a pellet stove up to the old chimney as back up heat when it gets really cold.

 

[Spaz]

I'm also getting tired of this Harmon, putting out various amounts of heat. Temps been the same (19-20f) no wind, for the last 2 days. Temp inside has jumped 3 degrees in the last couple of hours. 😯

 

[Whitenuckler]

I'm also getting tired of this Harmon, putting out various amounts of heat. Temps been the same (19-20f) no wind, for the last 2 days. Temp inside has jumped 3 degrees in the last couple of hours. 😯

I think you'd like to move the temperature probe further like I did. It make's a big difference.

Thread 'Harman P43 Remote Thermostat'

Nov 6, 2025

I am thinking about upgrading my room thermostat from the stock cable/tip I have stuck in a wall, to the old looking one which is in the center of my basement room where the stove is. There is a cable going from it to my old furnace room. Also, I have a newer one upstairs I could move down. Should I wire the thermostat in series with the existing probe, or is it better to move/extend the probe to a better location without using a thermostat at all? Thanks

• Whitenuckler
• Replies: 7
• Forum: The Pellet Mill - Pellet and Multifuel Stoves

I was lucky in that the wiring was already there. If you can run some wire from the stove to the middle of the room the stove is in, you could do it. The other way is to use another existing or new thermostat, new or existing wire, and put it in series with the probe at the stove, or the most expensive and easy, a new remote thermostat.

 

[Spaz]

I'm not running it on room mode since it jammed up. I can't trust it to not jam up at 2 am leaving me freezing. Another issue I haven't figured out and the technician sluffed it off saying just keep running it on stove mode. Another reason to get away from pellet stoves. I have fixed that issue, with a really good cleaning, but that doesn't explain why it did it out of the blue. It ran fine a half hour previously. The problem was that it wasn't sucking enough air through the auger chute, therefore not igniting the pellets at the back of the bowl. It also wasn't starting properly, it would burn front to back not igniting the pellets at the back. I really cleaned the bowl out removing a coating of scale I couldn't see. It fired up perfectly burned fine and has been since. Really putting out good flame. Just today it's decided to over do itself.

 

[Whitenuckler]

I'm not running it on room mode since it jammed up. I can't trust it to not jam up at 2 am leaving me freezing. Another issue I haven't figured out and the technician sluffed it off saying just keep running it on stove mode. Another reason to get away from pellet stoves. I have fixed that issue, with a really good cleaning, but that doesn't explain why it did it out of the blue. It ran fine a half hour previously. The problem was that it wasn't sucking enough air through the auger chute, therefore not igniting the pellets at the back of the bowl. It also wasn't starting properly, it would burn front to back not igniting the pellets at the back. I really cleaned the bowl out removing a coating of scale I couldn't see. It fired up perfectly burned fine and has been since. Really putting out good flame. Just today it's decided to over do itself.

Yes, I agree, Room Mode is the most demanding, as the control board needs to do much more. Get stove mode going good, and try room mode once and awhile. You might be running wide open on stove mode all the time anyway, it's been cold.

 

[Spaz]

I'm not running it on room mode since it jammed up. I can't trust it to not jam up at 2 am leaving me freezing. Another issue I haven't figured out and the technician sluffed it off saying just keep running it on stove mode. Another reason to get away from pellet stoves. I have fixed that issue, with a really good cleaning, but that doesn't explain why it did it out of the blue. It ran fine a half hour previously. The problem was that it wasn't sucking enough air through the auger chute, therefore not igniting the pellets at the back of the bowl. It also wasn't starting properly, it would burn front to back not igniting the pellets at the back. I really cleaned the bowl out removing a coating of scale I couldn't see. It fired up perfectly burned fine and has been since. Really putting out good flame. Just today it's decided to over do itself.

Turned it down from 6-5, it's holding at 75.

 

[Washed-Up]

Oops that should’ve been “PANNED” out

 

[Spaz]

Yes, I agree, Room Mode is the most demanding, as the control board needs to do much more. Get stove mode going good, and try room mode once and awhile. You might be running wide open on stove mode all the time anyway, it's been cold.

Getting close to that. The back room has a Quadrafire CB 1200 in it for back up. If it goes below 70f it comes on. So I have heat, it's just getting expensive. Like you said it's been very cold this year.

 

[Washed-Up]

What do mean by pinned out? I can scribble out a picture by hand. My biggest problem is getting heat equally around the house. I have a floor fan and a ceiling fan in the kitchen where it's located. The ceiling fan is blowing down and the floor fan is in a doorway on the floor sucking cold air from the back room, which is 5f colder then the front. The front also feeds the upstairs via the stairs. The kitchen is in the middle of the house. It has two large doorways at both ends allowing good circulation, but the stove is behind the wall separating it from the back room, where as the one to the front is getting hot air blowing directly to it. I've attached a shot looking from the back to the front. The stove is to the left around the corner. The back room is twice the size of the front and is used all day. The front is only used at night.

Where’s the stove?

 

[Spaz]

Where’s the stove?

Just around the corner to the left.

 

[Spaz]

Well it's clogged up with pellets again, not burning pellets at the back. Getting half the heat out of it.

 

[Spaz]

Going to have to clean it out again and see what happenings. Seems to happen after I turn it down as I did yesterday. Left it on 5 last night, and it was backed up this morning. Like it was on 3. Been running on 6 for like a week, worked fine.

 

[Spaz]

It doesn't start burning the pellets at the back until it starts shutting done and I clean the burnt ones away. It is sucking through the auger though, lighting the ones at the back. I watched it cool down, restarted it and watched it feed. It started out okay but then started plugging up. Once I scrapped the unburnt ones from the back to the front they burnt like crazy then died down again. Still waiting for a complete shut down and restart.

 

[Spaz]

While I was watching the cool down. I put it into test and it pumped some pellets out and it burnt them. So its pushing air out of the auger shoot.

 

[Washed-Up]

Just around the corner to the left.

That’s a great help, I’m out