We have all electric (heat pump) which, IMHO, does a lousy job of "warming" a house. How can the temperature of your house go up when the air coming out of the vents is COLD??
We set our thermostat in the 70-71 range, but it never seems that warm. Most of the time in the winter it doesn't even turn on much because we have a fireplace insert (propane) that pumps out LOTS of heat....and it's in the same room as the thermostat!!! We warm the downstairs with that. Upstairs is usually pretty chilly, but heated mattress pads take care of that problem.
Our sunroom does not have duct work, so we use an oil filled radient heater in there.
Today the thermostat is set at 74 because I want to make sure it's working well before the bitter cold sets in and I had to bump it up just to get it to turn on!