If you have a furnace or boiler that has received a red tag, the important thing to remember is a red tag means that your boiler or furnace is unsafe to operate. That means you need to either have it repaired so it’s safe to operate or it needs to be completely replaced.
When a technician encounters a furnace or boiler that needs a red tag they don’t have a choice: The law states that if your furnace or boiler is a danger to you, your family, your home, your neighbours, your tenants, or your patrons then a red tag must be placed on it. In some cases, the gas has to be turned off right away.