Five things to check if your furnace quits working

https://www.slideserve.com/arthuskzh3/5-things-to-check-if-your-heating-system-stops-working-powerpoint-ppt-presentation

You're wearing your coziest thick socks, your scarf is securely twisted around your neck and shoulders and there's an apparent chill in the air. Unfortunately, you aren't outside, however standing in your house,