I own a home built in 1988 that included a 90+ furnance vented directly to the outside, a masonary woodburning fireplace, and a high efficiency hot water heater that vented into the fireplace chimney. These all appeared to have passed inspection when the home was built.
I purchased the home in 1997 and have since had to replace the furnace (with another 90+)and changed the fireplace to gas logs. Last weekend the 15 yr old hot water tank failed. Went to Home Depot and purchased a new one and paid to have it installed. When the installer arrived he noted the 90+ furnace and stated that he could not install the hot water heater unless I paid $450 to have a chimney liner installed. Since my $309 water heater, $219 installation, $55 permit fee, and $450 chimney liner = $1033, I flatly told him to forget the whole deal. (I purchase the same heater and installed it myself later that day, without the "benefit" of the liner, permit, or installation charge; something the installer stated happens quite frequently).
Now, I've done the research on the reasons for a liner (lower temps, condensing gases, chimney eroding, etc.) and have looked into putting a liner in myself. However, I have some questions and I'd like to hear from the experts:
- Is such a liner really, truely necessary? (the home passed inspection when it was built; as a wood buring fireplace it surely was less likely used than with the perpetual pilot that I have running in it for the gas logs and the water heater is virtually the same as the one used when the home was built; I live in Michigan by the way, so freeze/thaw is a given).
- Why is it that it seems impossible to obtain the chimney liner kits for do it yourself install? (Nearly every site indicates they don't sell to homeowners and that its really important to have it done by "experts"; yet I've read all the install instructions and it generally seems to be a straight foward "feed it down the chimney, gently pull it through, connect it up" install; certainly nothing very complicated).
The fact that I can't seem to purchase a kit and must go through a dealer and pay for the installation smacks of the type of dealer control on HVAC/furnace items to deliberately keep consumers from making their own repairs. I mean, c'mon, this certainly isn't brain surgery, and the unfortunate experiences I've had with some of the "skilled" installers tells me I'd be far more careful with the installation.
I put my faith in the honest responses I anticipate from this group (Keeping in mind that if a liner is truely necessary it would really miff me to pay $450 for a $150 aluminum liner kit that will take two, untrained, just out of high school, laborers about an hour to install).