Hey
I just went through he same process as you're looking into, and here are my thoughts:
I have a brick house 2400 sq ft. with an unfinished basement. I thought an insert would help with heating costs, but it would also help me proceed with a "self-sufficient lifestyle" that I seem to need and my wife simply shakes her head and puts up with me. Two months ago, I bought a beautiful wood burning insert for my 100 yr old masonry fireplace. A Lopi Freedom. Its gorgeous. I love it and look forward to using it as a heat supplement to my natural gas furnace for the next 20 years. But here's a few things I didn't know when I bought it ....
If you have to purchase wood, its cheaper to heat your home with natural gas as we have in Illinois. In the NorthEast, heating oil is 2-3 times N.G price might be different, but here in Illinois, a cord of wood delivered costs $160 and delivers the same heat as $160 worth of natural gas. Just thought you should know that.
The wood burning insert might cost you more than $3000. With my insert, there is an additional fee for the door (black, pewter, or gold), there is an additional fee for the black plates that line the fireplace (VERY needed in my home), and a large extra cost for the blower, which --unlike a wood burning stove --- is absolutely needed in an insert. Mine, with the local "doctor tax" cost a little north of $4000
When I looked at my home heating bills over the past 3 years, they certainly vary, but average $800 - 1000 per year. But 1/4 of those bills are not "therms" for heat, but energy surcharges, taxes, additional fees which do not go down with lower N.G. usage. The MOST I might save if I went 24/7 heating with my wood-burning insert is about $600 per year this winter. Personally, I suspect N.G. prices are going to rise, but at this rate it would take me 5-6 years to even pay for the insert.
The insert is not the only cost you'll bear. $11
9 for an electric chainsaw ..... $29 for fireplace ash rake and tool set ...... $39 for a maul and hatchet wood splitter ..... $15 for an ash bucket .....$250 for tiles to be placed in front of the stove to avoid carpet burns (probably should have been there in the first place when I was burning my fireplace). $15 for protective eye glasses for when I chainsaw, $20 for ear protection ......Pretty soon I found I've spent $500 on "extras" --- i.e another year of N.G
You will need lots of wood. No, scratch that ...TONS of wood. For even a small town country doctor, it is almost inconceivable how much wood I found I needed need for one year's burning and a year's seasoning. The massive stack I obtained in September is 1/3 gone already, and I continue to scrounge 300-500 pounds of wood each week. Do you have space to store it indoors or out? I had expected to burn 24/7 to need 60-80 pounds of dried hardwood per day --- it turns out I need 2-3 times that much. I'm looking forward to getting my neighbors tree in the spring --- it'll be nice to have 3-4 cords stacked up and drying
The blower on the Lopi is louder than I expected. Running it half open is OK, you can have a conversation but its always there in the background. I wonder how I'll feel about it in February. Open the blower speed wide open and its like running a vacuum in the room. Scares my cats al to hell. And the heat delivered is really one enormous space heater, broiling you out of one room, heating the others with wild variability, and our laundry basement is 40 degrees.
The dealer says "12 hour burn" which suggests to you that you will need to fill the firebox twice a day to achieve a 24/7 hot box. For my Freedom, its more like "every 4 hours you need a refill". Actually, I like to play with the fire so I add a log every hour or two when I'm home.
I guess what I'm saying is that if you normally have a $800 bill for heating each winter, you're not going to see a return on your investment by buying a wood-burning insert for many, many, many years. And the scrounging for wood, bucking logs, splitting wood, stacking wood, hauling wood into the house ..................I bet if you put it down into pay it would come up to 50 cents per hour. If you're going to buy an insert, there needs to be something else you're interested in.
Personally, I don't mind the labor and at 45 years old I could use the exercise. I enjoy "playing with my wood" (my wife giggles when she says that), stacking, cutting, and hauling. I like the "self-sufficiency" concept, not relying on the government or on the gas company to provide heat for my home. I like the comfort that in event of a power outage (we have outages 2-3 times each winter) I have heat, no matter what. And I like the look of a burning fire in my living room, and the Lopi Freedom has a huge window to watch the fire. There's something ...ummm... existential ..... about burning wood to heat your home and it feels right and good to me, despite the disadvantages. But be certain your wife will not see that existentialism, and make sure you buy a "Dirt Devil" ( $49) to keep next to the fireplace to pick up wood chips and dirt, because she WILL see that.
I hope this rambling was helpful to you, and that you find what you're looking for. I'm enjoying my 2 month old Lopi, but I've learned its lifestyle is certainly not for everyone.