I have had one, an Enviro Evolution, for about 20 years and it has been good. I have HW rads as my main heat but use the stove as a pleasant additional heat source. And it really saved my bacon a couple of winters ago when the boiler developed a leak. It was running full tilt for a couple of days.
I was thinking of replacing it with a wood stove a few years ago when I had three big trees taken down and ended up with some fine firewood, but the cost, including about 25' of double-wall SS pipe, was high. And, like you, I'm not getting any younger and now wouldn't want to be cutting and stacking firewood.
Mine had a rather loud convection blower when I got it but I "mcguyvered" a tangential fan replacement which has less velocity but is much quieter and not a problem as I have a ceiling fan running slowly 24/7 so that helps distribute the heat. (I am a bit fussy about noise; mine was unusually loud I think as my neighbours bought the same one and the blowers were quieter.) I also got the external combustion fan kit which sits on the outside wall.
The only things I've had to replace over the years have been the impeller fan on the combustion motor, which gets pretty grimy, being in the direct flow of hot exhaust gases, and the fibreglass "rope" that ensures a tight seal around the door.
The igniter has to be replaced occasionally, too, and they are ludicrously expensive from dealers (like many such parts***) as they are just a basic cartridge heater, used by the thousands in various industries such as plastics extrusion. I found mine was a 400W unit made by Chromalox and ended up getting a couple through a Chromalox distributor in Seattle for about what the Enviro dealers pay "wholesale" from Enviro! Eventually I just disconnected it (leaving it in place in case it was important as regards air flow) and use a propane torch to light the stove, which is quicker as well.
Yes, in a power outage you'd need external power. Having disabled the 400W igniter, only the combustion fan, auger and comvection fan need power. Mine draws 75-90W, depending on whether the auger is runnng. There is one pellet stove,
from Wiseway, which is gravity feed and needs no power. Don't know anything about it, though.
Like a wood stove, they require basic cleaning of the flue etc. Also a good idea to empty the hopper once in a while and vacuum out the bottom where the auger opening is, which gets rid of any "fines" (sawdust) that sometimes builds up. The pellets are just compressed wood chips and sometimes some can create sawdust in the bag during shipping. Vacuuming out the firebox occasionally is good, too. You should use a fine bag over your vacuum filter as the dust is extremely fine.
*** I just bought a replacement combustion fan impeller from
for $11.99. OEM is something like $100
