CanmetEnergy publishes a good residential energy analysis program.
http://canmetenergy.nrcan.gc.ca/software-tools/hot2000/84

Also Hot2XP, and Hot3000 - beta.

I have been using Hot2000 for years. We did a major renovation on
our home 3 years ago. I used Hot2000 and DOE2.1e to model the
house. The two agreed on the envelope and ventilation
loads. Hot2000 gave results that seemed more reasonable for the
total energy. The house has an HRV and infloor heating, no
AC. Creating the Hot2000 model is significantly simpler.

With equest you can set the ventilation system to no heating/cooling
capacity and a fan flow to account for the exhaust flow with no fan
energy. Allocating the plug loads and schedules will take some
judgement. The refrigerator is modelled as a plug load, not as
refrigeration. You need to account for any ventilation - kitchen
hood, dryer, bathroom fans etc. in the appropriate zones.

The default schedules and loads in Hot2000 are fairly representative
of typical homes. You can create your own schedules as required.

>> Christopher Jones, P.Eng.