Put all the radiators on! SIMPLE!
Gas heated hot water radiators.
On/Off valves in radiators turned off or clogged Another possibility is an air bubble in the loop that services the radiators that are not heating. Correction is to bleed the loop.
absolutely! Even when handling that stuff your supposed to use a mask.
fire is harmful to the environment because it is a kind of gas
A boiler with a circulating pump and pipes to convey heating water around a house, through radiators or underfloor pipes.
because it is a natural shape that will go with a house because doors are rectangular,so is a bed and a stair case ect
In your house this will tend to direct SOME of the heat into the room and away from the walls.
A sinkhole CAN be.
Are you considering this in a residence? A friend of mine converted a residential steam system with cast iron radiators to hot water for child safety reasons. It all worked, but he had to deal with some water leaks at joints in the radiators. That was a nuisance. The amount of heat delivered to the house will be different with water, but I can't remember if the radiators are oversized or undersized after conversion. In his case it heated fine. Call a professional. EPM
Yes it is very harmful it should not be in someone's house
The pump is probably off if it`s a hot water system.