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jdemaris
03-16-2005 13:05:22
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I don't know anything about the Lennox, but some of the newer furnaces are absolute junk - especially some of the hot-air units. One of my buildings has a 1948 Firestone hot-air oil furnace (Firestone label calls it an air conditioner). It still works great. No cad-cell, it uses a stack switch, and the heat-exchanger is firebrick lined. I bought a new Onieda oil hot-air furnace for another house, and it burnt out in 6 years. Ondeida made it just about impossible to collect on the "lifetime warranty." Wanted me to pay for a new heat-exchanger, pay for an authorized dealer installation, pay the shipping and send the old one back, they'd inspect it, and then - make the decision if they'd honor the warranty. They said if the heat-exchanger had heat damage, the warranty was void! Heat damage? Kind of like saying warranty is void on your car if you drive it. My son bought an Olsen oil hot-air furnace, it burnt out in 4 years. He then paid Agway to install a new Carrier furnace. In one year, it's had two circuit board failures. I patched the heat-exchanger in my furnace rather then get screwed around by the company. Since then, I'm come across many new furnaces that had very short lives. Mosty because of the cheap refractory blanket that's used for the heat-exhanger liner. Once it crumbles, the thin metal in the exchanger burns right out. So now, as least with hot-air furnaces, I know what to look for. If there is a heat-exhanger where metal is in direct proximity of the flame, it needs stainless steel, or a real hard clay or firebrick liner - and not that cheap blanket.
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