My lennox pulse is not keeping my house warm enough, sounds like the fan runs constantly and can hear the furnace kick on for a few seconds at a time. What's the problem. BTW its -30* F this morning

A Lennox Pulse furnace has to be serviced by a trained Lennox Pulse professional. There is no way around this since if the Pulse gets out of adjustment very nasty things can happen. I have serviced the Pulse furnace years ago and this is why I recommed professional on site assistance. I do not want to see you or anyone in your family get hurt.

See recalls and other info

http://www.inspectapedia.com/heat/lennox1.htm

http://www.bobvila.com/wwwboard/messages/243450.html

http://forum.doityourself.com/gas-oi...placement.html

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