I remember back when this new HVAC product(Hart & Cooley plexvent) came on the market back in the early to mid 90’s, this product allowed the venting of 80% gas furnaces to go out side wall of the home or business. Now customers where not forced to purchase a more expensive 90% gas furnace. Keep in mind 90% furnaces where a lot more expensive than 80% ‘s and natural gas was still fairly cheap.
In the picture above you can see the Hart & Cooley plexvent, if you own a furnace with this type of venting being used I strongly recommend you have it inspected ASAP. If my memory serves me right Hart & Cooley was not the only manufacture who produced this type of venting, there was also a clear type of vent as well.
The older RHEEM 80% furnace vented in plastic vent, the owner completely unaware of the dangers of this type of venting. Fortunately for him American Standard makes a standard 95% gas furnace that I can install at a reasonable price. My biggest challenge was removing the older plastic vent and installing a PVC vent system in the same space.
There was plenty of space to work and the duct connections where fairly easy, the only ducting was an extension of the existing return. I also added a condensate pump to remove condensation. Now my customer has not only a more efficient gas furnace but a properly installed one.
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