Tag: furnace red tag

Cracked heat exchanger inspection: technician using a camera inside a gas furnace in a Durham basement

Cracked Heat Exchanger: Signs, Dangers and What to Do

November 2, 2026

Aire One East Heating & Cooling Cracked Heat Exchanger Signs, Dangers and What to Do How to spot it, why it matters, and what happens if your furnace is red tagged 7 Warning SignsRed Tag ExplainedDurham Region 2026 GUIDE AIRE ONE EAST DURHAM REGION ★ …

1910 Dundas St E #117
Whitby, ON-L1N 2L6

info@aireonedurham.ca

905-576-7600

Serving Whitby, Oshawa, Ajax, Pickering, Courtice, Bowmanville, Port Perry and Uxbridge — L1M, L1N, L1P, L1R, L1G, L1H, L1J, L1K, L1L, L1S, L1T, L1Z, L1V, L1W, L1X, L1Y, L1C, L1E, L9L, L9P, L0C — and beyond.