I bought a condo last year and it has a unit furnace of Frigidare brand name? Anyways it is a 3 story loft condo with the furnace on its basement level along with a cheap NOMA electronic thermostat. The problem I am finding with it seems to be "short cycling"? It seems to kick on and off every 15 minutes for a few minutes which adds up to alot of run time throughout the day. As much as 4.5-5.0 hours a day when -20 outside. I have it set to 21 celcius when I am home and 19 when I am not. Is it normal to run this often? I think the insulation of the unit is substandard and also has lots of windows. The basement level always seems to be colder where the Tstat is. Any suggestions? Can a furnace be tuned up?