Bought a 1965 vintage house in Colorado at 7,500 elevation. It had a fireplace upstairs and down, each with their own flue in a common chimney. Last year put in a 72,000 BTU Lopi Republic 1750i wood burning insert in the bottom fireplace along with stainless steel chimney liner. Love it! This year I want to put in a ~22,000 BTU gas insert upstairs in the living room fireplace.
I understand a ventless gas insert can't be used above 4,500 feet. Is that correct?
While I could vent up the existing flue (a B-Vent?), is there any reason I can't punch a hole through the back of the fireplace and put in a direct vent which could also pull in outside combustion air? If so, wouldn't that be more efficient than a B-Vent that uses inside air for the combustion?
Recommendations on a direct vent gas insert?
If I do use the existing flue, would it be prudent to also put in a stainless steel flue liner for a 22,000 BTU gas fireplace?
I understand a ventless gas insert can't be used above 4,500 feet. Is that correct?
While I could vent up the existing flue (a B-Vent?), is there any reason I can't punch a hole through the back of the fireplace and put in a direct vent which could also pull in outside combustion air? If so, wouldn't that be more efficient than a B-Vent that uses inside air for the combustion?
Recommendations on a direct vent gas insert?
If I do use the existing flue, would it be prudent to also put in a stainless steel flue liner for a 22,000 BTU gas fireplace?
