No, Union Gas does not sell, rent, or service gas appliances.
An older water heater can be less energy efficient than a new unit. Contact your rental company or a contractor to have a water heater evaluation completed.
The building code has been amended to specify that new or replacement water heaters supply a maximum hot water temperature of 49 degrees Celsius (120 degrees Fahrenheit). Check with your local building department for the requirements for your home.
You may have seen tankless water heaters that supply hot water on demand instead of storing it in a tank. They may be placed close to where the hot water is needed. In Canada, they are usually located in utility rooms or the basement. Learn more about tankless water heaters.