Everyone getting sick in your house this winter?
Your furnace not working too efficiently for some reason?
Here’s why–see the above pic.
Maybe it’s cuz you ought to change your furnace filter more often Prof Bruce…
Bruce M Firestone, B Eng (civil), M Eng-Sci, PhD
ROYAL LePAGE Performance Realty broker
Ottawa Senators founder
Real Estate Investment and Business coach
MAKING IMPOSSIBLE POSSIBLE