I have a Harman absolute63. It has been fantastic. However, we recently lost power for 8 hours during a windstorm and the house got down to 55degrees. We typically only lose power a few times a year (mostly during summer) and this is the first time it was during cold weather (20F outside). I have decided to invest in some sort of backup to run our pellet stove. unfortunately our budget is not very large ~$500. We can typically find decently used generators in the 5000watt range for 200-400$ locally. I have read there could be issues with using generators with Harman pellet stoves but I have no idea what these issues are. I have heard of using some sort of battery backup but I am not sure what that means and how expensive it is. The plus of using a generator would be we can then also run some other things such as some lights and maybe the refrigerator. I welcome all ideas on this subject. Thanks!