Q2. Which is the most efficient heating system at home?
Heating systems are enlisted below from higher to lower efficiency.
The most efficient one is the heat pump which comes in two varieties: air-source and air pump.
A furnace is a standard heating system found in America, further divided into their fuel varieties: gas, oil, and electricity.
Boilers are less commonly found when compared to furnaces and heat pumps but are efficient enough and rated as 90 or higher with AFUE (Annual Fuel Utilization Efficiency).