We purchased a Englander insert and was told by our chimney man we didnt need a liner. Our chimney is also used by the oil furnace. IS this true? I thought we need to have a liner? Our chimeny was rebuilt about 5 years ago and is in good shape.
Liner or not
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How many flues does the chimney have? You cannot have two appliances using the same flue.
What's the diameter of the flue the insert is exhausting into? If it is quite a bit over 6" in diameter the insert probably suffers from poor draft. How much can you close the air and still have a good fire going in the top of the firebox? Any problems with smoke spillage in the room? Did your installer put at least some stovepipe on top of the insert until it reaches the damper and then close that area off? That would be called a "direct-connect" and is (unfortunately) still allowed in the US. If there is nothing connecting the insert to the actual flue then you have a slammer which is totally unsafe, not code-compliant, and should be rectified ASAP. It will also be much easier to clean the chimney once a liner is in.
What's the diameter of the flue the insert is exhausting into? If it is quite a bit over 6" in diameter the insert probably suffers from poor draft. How much can you close the air and still have a good fire going in the top of the firebox? Any problems with smoke spillage in the room? Did your installer put at least some stovepipe on top of the insert until it reaches the damper and then close that area off? That would be called a "direct-connect" and is (unfortunately) still allowed in the US. If there is nothing connecting the insert to the actual flue then you have a slammer which is totally unsafe, not code-compliant, and should be rectified ASAP. It will also be much easier to clean the chimney once a liner is in.
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