I have narrowed it down to 2 lopi wood inserts. The 1750 and the freedom. I am looking for personal experiences on which one would be better to heat my 1600 square foot ranch with cathedral ceilings in about 500 feet of it. Any help would be much appreciated.
Our family has used a Lopi Revere insert (basically the same as the 1750, I understand) to heat for the past several years. It's located in a walk-out basement that's about 400 square feet with slightly lower than 8-foot ceilings. It heats that space with no problems whatsoever and can really overheat it easily if we wanted it to. (When we load it up for the night, it will easily get into the eighties in the stove room.)
After a couple of years of running the stove, we changed over to using it as our main heat for the whole house. That works, too, but we also will let the natural gas furnace pick up some slack if necessary since it ends up being 2,500 sq. ft. on two floors. (We are pretty well insulated and air sealed but not in the harshest of climates.). Our house is a raised ranch, and the heat likes to go vertically more than horizontally.
One issue to think about is how well the heat will be able to move. If the floor plan (feel free to post it here, and people will give you lots of feedback) allows good movement of air, that will help a lot. Are the cathedral ceilings in the same room as the fireplace? How tall are they? Manufacturers' square footage ratings assume eight foot ceilings, I believe.
When we don't want to overheat our downstairs during the day, we build smaller fires in our Revere. (Our upstairs gets good solar heat gain.). With dry wood, it's no problem to run a small fire with secondary combustion. You could do something similar with the Freedom, and then you'd have the bigger firebox when you really want to crank out the heat.
I'm not really very familiar with the Freedom. I think it was perhaps too big for our fireplace. Is the firebox square like the Revere, or does it load better parallel to the door (called east/west on these forums)? I do like the square firebox on my Revere, but on cold, cold winter's nights an even larger firebox would be nice. (We do get ten hour burns from a box loaded fully with nice hardwood, but the coaling stage at the end of an overnight burn doesn't produce waves and waves of heat in the dead of winter.)
I don't know that I've helped much, but feel free to ask more questions.