Post ice storm replace or upgrade fireplace?

[Smother8299]

Hello! I recently survived the TN Ice Storm and no power for days, during which I put a fireplace to the test, and was pretty disappointed. I'm trying to figure out what I can do about it.

I've got a 2022 installed Superior WRT3036WSI instealled in a framed/plywood chase. It's been fun to use, and before this winter never gave me any problems. In January, we were hit with Winter Storm Fern, and our power went out (ultimately for 9 days, but we bailed on day 3). The fireplace couldn't keep the house warm, and I understand it's because it's inefficient, heat goes out the chimney, cold air gets sucked in from elsewhere, etc.

Now I'm wishing I had something that could have actually kept the house warm. I'm looking into what it would take to replace this fireplace with some kind of woodstove, perhaps Zero Clearance? But the terminology is dizzying. So, I guess, two questions:

1. Could I swap out the fireplace with some kind of Insert? Seems like in this case it would be a Zero Clearance, correct? Can I just find something that's the same size as our current fireplace and make the swap, or are there other considerations? I'm assuming it's just wood and plywood inside the chase around the fireplace.

2. If that's a bad idea, is it possible to make this existing fireplace better? Would an outside air kit help at all?

Thanks!

 

[begreen]

For clarity's sake, some definitions can be helpful. This is a Zero Clearance (ZC) fireplace. An insert, is a stove that can be inserted into a fireplace. In many cases an insert is only permitted in masonry fireplaces, but there are some exceptions. For the Superior WRT3036, the many states:
Do not install a fireplace insert in this fireplace unless the manufacturer's instructions with the insert specifically state this fireplace has been tested for use with this insert.

Lopi inserts have been tested for Superior fireplaces that permit insert installation so that is theoretically possible. Which model Lopi will depend on the size of the current ZC's firebox and how large a room is being heated.

The alternative is to replace the current ZC with an EPA ZC that is designed to heat efficiently and has gravity vents that allow it to heat the room when the power is out.

 

[bigealta]

Does anyone have any rough figures on the heat output and efficiency of

1. EPA ZC fireplace
2. EPA Insert stove
3. Freestanding EPA woodstove

Just looking for a general idea

Obviously there are lots of variables but really looking for the answer to:
"Hey what is the best wood heater i can get that will keep my house warm in 20F outdoor temps when the power is out for a week or more. "

 

[jalmondale]

Depending on the model, you'll get 70-85% for all 3 (although I believe you'll have a lot more options available for 2 & 3). While it's not hard to run a small fan off a solar-rechargeable battery, it's worth noting that options 1 & 2 will typically need a blower for maximum heat production.

 

[begreen]

Does anyone have any rough figures on the heat output and efficiency of

1. EPA ZC fireplace
2. EPA Insert stove
3. Freestanding EPA woodstove

Just looking for a general idea

Obviously there are lots of variables but really looking for the answer to:
"Hey what is the best wood heater i can get that will keep my house warm in 20F outdoor temps when the power is out for a week or more. "

Too broad a question. There are all sorts of sizes and designs with different specs. They run the gamut. Go to the EPA woodstove database for specifics.

Woodstove Database | Burnwise | US EPA