jrplumber87 wrote:The only reason I ask this is I am a heating technician and sometimes I get home a few hours late in the winter and I don't want to come home to a cold stove and the sound of my propane furnace running if I can help it. Thanks for your time! I would appreciate any insight anyone has.
I don't have a mark II or a "stove" for that matter but hopefully this may help. I have a hand fed furnace much tended to the same way as a stove would be. My opinion is that an appliance properly sized for the space should get 12 hour tending times minimum thru a majority of the winter. Occasionally when its below normal cold, tending 3 times a day may be required to maintain a steady high heat output. That's why we love coal right? To get burn times that don't make us a slave to the heat
SO, it would be wise to figure out how many BTUs you average use thru an average winter day and take it from there. It may take some math work to figure out your btu needs based on propane usage. Since yer a heating technician the following should be right up your ally
I had a 100,000 BTU propane furnace (which nets 80,000) so I decided to go after an appliance that could max 120,000 btu (which would net 100,000 btu) so I would have the extra umph to get thru the abnormal lows without more than 2 tendings per day. On the coldest days I burn 75-80 pounds which is roughly 42,000 btus per hour to maintain 75 degrees in the house. Keep in mind that maximun rated btu output from the manufacturer isn't realistic. I would never want to push my furnace to produce 100,000 btus per hour. It probably wouldn't be safe and definitely wouldn't be efficient. My opinion would be to get a stove that is rated double what you need, so you don't have to crank the hell out of it and you could maintain the steady heat output required to get 12 hour burn times. Once you learn the burn, you'll see that even an oversized appliance can be cut back to throw low heat on warmer days. Those days you could get a 18-24 hour burn and not heat yourself out of the house. Better oversized than undersized.