On a house heater can you put diesel fuel in the tank?

No, you absolutely should not put diesel fuel in a house heater tank. House heaters are designed to burn either natural gas, propane, or sometimes kerosene/paraffin, depending on the model. Diesel fuel is a completely different fuel type with different combustion properties. Using diesel in a house heater designed for another fuel type is extremely dangerous and could lead to:

* Fire: Diesel fuel's different combustion characteristics can cause incomplete combustion, leading to soot buildup, overheating, and potentially a fire.

* Explosion: The pressure build-up from incomplete combustion could lead to an explosion.

* Carbon Monoxide Poisoning: Incomplete combustion produces significantly more carbon monoxide (CO), a deadly, odorless gas.

* Damage to the heater: Diesel fuel will likely damage the internal components of the heater, requiring expensive repairs or replacement.

Always use the fuel specifically recommended by the manufacturer for your house heater. This information is clearly stated in the owner's manual. If you're unsure, consult a qualified heating professional.