Improving your existing steam system efficiency.

1. Ensure that all steam piping in the basement is properly insulated. The pipe insulation should have a minimum of 1" wall thickness. There is no need to insulate the return pipes. If you have insulation removed from the steam pipes for basement heat, replace it. This is an expensive way to heat even a small area. See adding a baseboard loop in your basement, then click the back button.
2. Verify the near boiler piping is correct. Incorrect near boiler piping produces short cycling, noisy system, or wet steam, all of which produce higher fuel bills.
3. Verify all radiator vents are working properly. NO AIR VENT SHOULD EVER VENT LIVE STEAM!!!!
4. The main line vents also need to work. Their job is to get steam to the end of the main as fast as possible. This may require the use of two or more main line vents in the same location. See vents on the above link.
5. Reduce the steam pressure. The Cut-out or main steam pressure should never be set above two psi. Most systems today operate at pressures lower than two psi, even in the ounces range. If the setting is too low, it may cause short cycling, which will increase fuel consumption.
6. Maintain the water level at the manufacturer's suggested level, as indicated by the Normal Water Line (NWL), even if you have an automatic water feeder. Remember, an automatic water feeder does not replace the need for you to maintain water levels. The automatic water feeder is designed for use when you are unable to check and maintain the water level properly.
7. Replace your thermostat with an electronic thermostat. The old thermostat calibration may be inaccurate due to dust buildup on the mercury bulb, which can affect the thermostat's accuracy. It may cause the heat to run longer than necessary or cause an uncomfortable temperature swing. Make sure you set the thermostat for a steam system in the menu or dip switches on the thermostat.
8. Ensure the return lines are in good condition and flow freely.
9. Clean and inspect the boiler annually. Check the system and vents for leaks. This should include a gas pressure check, a fuel pump pressure check, and a combustion analysis.
10. Replace the boiler with a newer steam boiler if the existing boiler is over 10 years old. The older the boiler, the less efficient it is. If the boiler is converted from coal to natural gas or oil, this is a must. The large flue passages allow too much heat to escape from the boiler, preventing it from reaching the iron. Therefore, less heat transfer.

Disclaimer: The information found on this website is for informational purposes only. All preventive maintenance, service, and installations should be reviewed on a per-job basis. Any work performed on your heating system should be performed by qualified and experienced personnel only. Comfort-Calc or its personnel accepts no responsibility for improper information, application, damage to property, or bodily injury from applied information found on this website.