Hydronic Seperator

Measuring Radiators to Size a Steam Boiler

 Sizing Radiation for Residential Steam Boilers

Column Type Radiator

Cast Iron Cabinet Convector

Radiant Radiator (Sunrad)

Tube Type Radiator

Cabinet Convector Copper Element

Directions Calculating EDR

Wall Radiator

Cast Iron Basboard

Measuring Radiation to Determine Sq. Ft of Steam Required

Calculating the Sq. Ft. or EDR of cast iron radiation is really simple. We can calculate it for you but hate taking your money for something so simple. As long as you can read a ruler and have a calulator you can do this. Steam boilers are sized on connected radiation only. This means no piping. The manufacturers have deducted 33% for piping already.
  • Measure the heigth of the radiator. This is measured from the floor not the bottom of the radiator.
  • Count the number of columns or turbes of the radiator
  • Count the number of sections that make up the length of the radiator
  • Using the below charts enter the left column to the heigth of the radiator. If between two heigths go the taller number
  • Get the multiplier for each section going to the right to the column that has the correct number of columns or tubes per section
  • Multiply the number of sections by the proper multiplier for each radiator
  • Add up all the radiators and look at steam boiler literature of your choice. Choose the boiler closest to the calculation results
 
 
 

Column Style Radiator


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

 
 
 
 
 
 

Tube Style Radiator

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

 
 
 
 
 
 
 
 

Wall Radiator

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

 
 
 
 
 
 

Cabinet Convector - Cast Iron Element

To calculate the Sq. Ft. of radiation for caninet convectors tou must first determine if the heating element inside the cabinet are copper or cast iron. Use the proper chart. This is simple, Measure the cabinet depth, height and width. Use the charts to aquire the Sq. Ft of Steam. Example: if the cabinet is 26" high, 6-1/2" deep and 43-1/2" long the sq. ft. of steem would be 39.8. Add together all convectors and other radiation and choose your boiler.

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

 
 
 
 
 
 

Cabinet Convector Copper Element

To calculate the Sq. Ft. of radiation for caninet convectors tou must first determine if the heating element inside the cabinet are copper or cast iron. Use the proper chart. This is simple, Measure the cabinet depth, height and width. Use the charts to aquire the Sq. Ft of Steam. Example: if the cabinet is 26" high, 6-1/4" deep and 36-1/2" long the sq. ft. of steem would be 36. Add together all convectors and other radiation and choose your boiler.

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

 

 

 
 
 
 

9A Cast Iron Baseboard

3.4 sq ft per lineal ft.

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

 
 
 
 
 
 

Radiant Radiator Also Known as Sunrad

Width

Height

SQ FT per Section

5"

20"

2.25

7.5"

20"

3.40

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