Hello sirs! I have seen a lot of threads with people asking about what inverter to get for a power outage or what size battery etc... but it's hard to find people to share actual results after receiving advice here on the forums, so I thought I'd share my setup. I hope someone may find some of the information useful. I'm no expert, but the setup works for my needs. (Power goes out here two or three times a year for usually less than 4-5 hours). 
I bought a new Harman P43 for $2,800 to heat my family's small 2 bedroom/3 bath 1500 sqft home. I built the pad myself and installed it with my dad and some help from the Good Lord. I had a few 12v 35ah deep cycle batteries on hand and bought a 1000w pure sine wave inverter on Amazon for $108. I tried my regular 2000 watt inverter, but because it was not pure sine wave, the Harman would not run on it (this was before I did forum research and found I needed a pure sine wave inverter).
After hooking up the inverter after receiving it in the mail, it ran the pellet stove on the stove's lowest setting (maintenance burn) for a solid 6 hours before running the battery down to 11v. Temperature outside was 20F and the stove kept the house about 70-71F all evening. The stove pulls about 70w an hour on low, which I was pleasantly surprised with. So my three 35ah batteries will last me a good 18 hours before needing to be charged. I contemplated getting an inverter that switches over to battery power automatically when the power goes out, but before obtaining my inverter setup, the power went out here for about 3 hours and the house never got smokey inside like many people have said has happened to them. Not sure why, maybe the way I have it vented? Thanks for reading everybody.
Link to inverter ($139.99 at the time of this edit)
https://www.amazon.com/gp/product/B00F4TP3AE/?tag=hearthamazon-20
I bought a new Harman P43 for $2,800 to heat my family's small 2 bedroom/3 bath 1500 sqft home. I built the pad myself and installed it with my dad and some help from the Good Lord. I had a few 12v 35ah deep cycle batteries on hand and bought a 1000w pure sine wave inverter on Amazon for $108. I tried my regular 2000 watt inverter, but because it was not pure sine wave, the Harman would not run on it (this was before I did forum research and found I needed a pure sine wave inverter).
After hooking up the inverter after receiving it in the mail, it ran the pellet stove on the stove's lowest setting (maintenance burn) for a solid 6 hours before running the battery down to 11v. Temperature outside was 20F and the stove kept the house about 70-71F all evening. The stove pulls about 70w an hour on low, which I was pleasantly surprised with. So my three 35ah batteries will last me a good 18 hours before needing to be charged. I contemplated getting an inverter that switches over to battery power automatically when the power goes out, but before obtaining my inverter setup, the power went out here for about 3 hours and the house never got smokey inside like many people have said has happened to them. Not sure why, maybe the way I have it vented? Thanks for reading everybody.
Link to inverter ($139.99 at the time of this edit)
https://www.amazon.com/gp/product/B00F4TP3AE/?tag=hearthamazon-20
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