Ive lived in a 1940s cape for 4 winters and have had an issue with the steam heat. It takes about 45 minutes for the radiators to heat up and begin producing heat. The boiler was cleaned out the last 2 years and radiator steam valves have been replaced. The house is small ~1400 sq ft.
When the boiler turns on it takes about 10-15 min for the heat to begin rising out of the pipe towards the radiators. It seems to travel through the pipes very slowly. The pipes are pitched towards the boiler and the radiators are also pitched to drain properly.
Any tips on what may be causing the heat to travel so slowly and what I can do to correct the issue? I tried keeping the water level at 1/4 but it didnt help.