Why I do not like poured liners for
oil furnaces
Poured liners are made of a masonry like
product that is poured around an inflated tube that is put down the chimney. If
the tube is not properly inflated it is inconstant, meaning if it is a 7” tube it
can go from 7” to 6” or less. I have seen it all the way down to 3”.
Moisture is a natural byproduct of
combustion, the more efficient the unit the more moisture is produced, that
moisture is transferred to the chimney. Poured liners are very susceptible to
moisture and I have seen many wore right down to the brick making them totally
useless. The stainless liners I use are guaranteed forever when installed
properly.
I have also seen poured liners that when I
went to clean them big pieces were falling out because it had not been mixed
properly, you do not have these problems with stainless liners and they are
consistent all the way down.
These high efficiency heating units that
these companies are putting in, they are supposed to be telling their customers
they need to put a stainless liner in the chimney, many of them are not
doing this. I don’t know if it is a lack of knowledge or that they are
primarily interested in selling the unit or don’t want to bother with the extra
work. Either way they are leaving their customers short.
These high efficiency units can destroy clay
tile lined chimneys rather fast. They cause spalling which is a flacking of the
tile on the inside of the flue and they can also cause what is called thermal
cracking. In any event buyer beware if you are purchasing a highly efficient
burner call us and we will install a stainless liner that you will never have
to worry about any of these issues ever again.
Click here to see a videos of a poured liner vs Stainless Liner
