High efficiency replacement for heatilator type insert

[Rb440mike]

I’m a new member. I have been lurking on the site for a while and finally have the money for a high efficiency insert. I have not been able to identify my current unit. Just guessing a heatilator. The house was built in 1970 and there is one in the basement and one upstairs. The insert extends out into a block chimney. What I am wondering is if I can install an insert without removing this ? It goes down about 3 inches below the to the bottom of the firebox. There are a couple of heat tubes that go to the upper vent that would need to be cut for the flexible liner. I’m really just trying to get an understanding before I talk to any contractors. My worry is about supporting the new insert at 400ish pounds. Thanks
Mike

 

[Rb440mike]

Well now that I figured out it is a superior heatform, the questions about removing the tubes are answered. The remaining question is about the floor of the fireplace being lower than the hearth. Can I just weld up structure to make a new floor for the insert to sit on? I think I will do the install myself. Thanks

 

[bholler]

Well now that I figured out it is a superior heatform, the questions about removing the tubes are answered. The remaining question is about the floor of the fireplace being lower than the hearth. Can I just weld up structure to make a new floor for the insert to sit on? I think I will do the install myself. Thanks

You can just stack bricks as well

 

[Rb440mike]

My Osborn 1700 insert showed up today. Now to figure out the best way to get the liner in. Unfortunately that won’t be here until next week. I have a question on removing the center tube from the superior heatform. I can take it out with a saws all or a grinder. Do I need to weld a plate on both sides of where the tube was just in case there is a liner leak? I will definitely put a plate inside the heat vent up top I just don’t know how well it needs to be sealed. Welding over the back of the tube way up in the fire place will be rough. I bought a liner that is oval for 4 ft to hopefully get through that area as it’s only about 5 1/2 inches wide. Any advise would be greatly appreciated.

Mike

 

[VintageGal]

I don't have any answers for you but I hope you get the help you need!