I track my pellet use so I know about how much I need each year. The price stays fairly flat through the year but I buy what I think I need during the summer 'stock up now' sales. If I need one more ton in spring it might be $20 higher than if I bought the summer before. In order store enough propane I would need multiple large tanks. Based on my pellet use I would need at least 1000 gallons on hand to ensure I made it from summer fill to summer fill. They only fill to 80% so one 1,000 gallon tank would not do it. The larger the tank the more the cost so I would have to factor in higher rental or pay back if I purchased them.
My pellet stove claims 85.2% efficient and IIRC my furnace is 89% or 91%, I have it written down somewhere. One chief difference though is the pellet stove has no duct loss. My furnace ducts are insulated but ran through the unheated crawlspace under my house. Every time the furnace kicks on it blows cold air into the house and then it takes a while to warm the ducts up before you get full temp. So I consider it to be a wash between the two as far as efficiency goes and I just compare on a BTU-BTU basis of the fuel.
I just paid 96.7 L today also gave the govs $57 in tax money to help them out made me feel great
Not knocking a pellet stove. Sounds like it is the right decision for you. Others it isnt. And I am not saying anyone on here said this, but I hear it all the time from other folks that pellets are cheaper heat, and all I am doing is proving that isnt the case in every situation.
My furnace is like 92% eff. have a 500 gal tank which will make it several years so I have the option to buy at summer low prices. This summer it was 1.35/gallon. and with one gallon equal to 91,200, the math is as follows....
91,200 x .92 = 83,900 BTU's I am actually getting for $1.35
($100/$1.35) x 83,900 BTU = 6.2 million BTU's for $100 spent. And I have to do nothing but call when I need filled.
A ton of pellets at 13.6 million BTU per ton, and $200 per ton, and an 80% furnace.
Thats 6.8 million BTU's per $100 times 80% eff is 5.4 million BTU's of home heat for $100.
Given the fact that I can buy propane when prices are low, and make it all winter, means I can get more heat for my dollar than with pellets. Even if a pellet stove were 100% efficient and I got the full 6.8 M BTU for the $100, it just aint worth the hastle of stocking pellets, feeding the stove, cleaning, etc.
It also helps that I have a heated basement. so heat loss in the ducts isnt lost at all.
Again, every situation is different. And not saying anyone in this thread said it, but I know alot of guys that swear pellets are cheaper heat than propane. And that just aint the case. And I dont think I need to mention that all of this changes as the price of propane goes up or down too. Obviously that changes the game. The fact that I have a heat pump and only need propane for backup allows me to buy in the summer. And others just dont have that luxury. Heat pumps are even more efficient than pellets. ANd given the "normal" climate where I live, It makes more sense to spend your few grand on a heat pump to supplement the propane vs buying a pellet setup as sole heat. Just my :2cents: