Bob is a service technician who is well trained and nationally certified. However, he has sometimes suffered from the same confusion that all technicians occasionally do — the facts that he gathers ...

Q: Last summer we purchased a new furnace, humidifier and air filter system. They said dust in the house would be cut down a lot, but we've noticed no difference. What's up? -- Heather A: What kind of ...

TORONTO – If you’re like most people, you probably don’t give your furnace much thought as long as it’s keeping you warm in the winter and cool in the summer. But in order to keep it working to its ...