The heat value of a fuel is the amount of heat released during its combustion. Also referred to as energy or calorific value, heat value is a measure of a fuel’s energy density, and is expressed in energy (joules) per specified amount (e.g. kilograms).

Why is my gas heating bill so high?

Consistently high bills, or high bills in the summer when heating costs drop for most households, can often be attributed to high gas supply rates, older, inefficient appliances, poor appliance maintenance, window and door drafts, heat loss through the attic or chimney, or opportunities to better manage your thermostat …

How is gas heating measured?

Although gas meters measure the amount of gas used in hundreds of cubic feet or cubic metres, gas bills display your use in kilowatt hours (kWh). … If your measure is in cubic feet, multiply by 2.83 to convert to meters. Multiply by 1.02264.