You take the size of your home in square feet and times it by how many rooms you have. A 70,000 BTU furnace will heat a house 1600 square feet.
Will a 40,000 btu furnace be enough to heat my 1375 square foot middle unit town house.
Mitochondria generate energy for the cell in a similar way to how a furnace produces heat for a house. They both provide the necessary energy for their respective systems to function properly.
A basement of a house is the room or space that is below ground level. A basement appliance that can heat your house is a furnace.
There is the possibility it is oversized causing it to heat the house, shut off and restart otherwise known as short cycling. Ideally the furnace would be sized to heat the house at the same rate the house loses heat on a design day.
The heat from a furnace is distributed throughout the house through vents and radiators to heat the indoor air. Some heat may be lost through windows, walls, and ceilings due to poor insulation, while the remaining heat eventually dissipates into the surrounding environment.
Meet with your installer to determine the capacity of your new furnace. The furnace capacity should be matched with the size of the house. You want to get a furnace that heats a house without overheating the home. Because your furnace will be newer, it will take less energy to heat your home.
48,000 input or output? If 48K is the input to an 80% efficient furnace, than the output would only be 38,400. It also depends on where the house is located, because 48K will heat a much larger house in Miami than it would in Minneapolis. You need to post more info to get a worthwhile answer. But to give you an idea I heat 1000 sq ft in NJ easily with a 52,500 80% efficient furnace which yields 42,000 output.
I would say a 40,000 BTU furnace could big enough to heat a 400 SQ ft house, but where have you found a 400 SQ Ft house?
no heat would flow
no heat would flow
Not if it was disconnected properly