Furnaces Articles

An electric or gas- or oil-fired furnace’s efficiency is measured by its AFUE, or Average Fuel Utilization Efficiency. This standard measurement is given in percentages.

It’s normal for your furnace to make some noise. For instance, a dull hum is to be expected. However, louder noises might spell trouble for your heating unit’s components.

Many homes have varied conditions from room to room causing spotty heating or cooling. On cold days, this can be a nuisance.