# Radiative fraction of electric baseboard heater not included in baseboard's total heating rate

Hello,

**Does anyone know, why the Baseboard Total Heating Rate is not equal to the Baseboard Electricity Rate and not equal to the sum of Baseboard Radiant Heating Rate and Baseboard Convective Heating Rate?**

I am trying to model a single room exposed to a constant outdoor condition. For indoor heating I use an electric baseboard heater (operative temperature controlled), which allows me to specify the radiative fraction and distribute it to specific surfaces and people. I ensured that all fractions to people and surfaces sum up to unity:

`Frac_people`

+`Frac_surfaces`

= 1

Where for me `Frac_people`

=0.

Now: the output variables for the baseboard heating indicate the total electric consumed power, which is the same as the sum of the convective and the radiative fraction. From the I/O reference, I understood that the total heating rate should also be the sum of the two and with an efficiency of 1 equal to the electric power.

`Baseboard Electricity Rate`

=`Baseboard Total Heating Rate`

/ Efficiency

`Baseboard Total Heating Rate`

=`Baseboard Convective Heating Rate`

+`Baseboard Radiant Heating Rate`

However, for me the output of the baseboard total heating rate is equal to the convective part only, leaving out the radiant fraction and is therefore also lower than the electricity rate.

I tried changing the radiative fraction, which only changed the value of the `Baseboard Radiant Heating Rate`

. Only in the case of `Frac_rad`

=0 the overall balance seem to add up.

Does anyone have an idea?

Many thanks in advance - I am happy to provide more information if needed!

Unfortunately I am new here and can not upload any files yet?! :/

@Liebwin you can upload your file to Google Drive, Dropbox, or a similar file-hosting service and then share the URL here for others to access.

Thanks @Aaron Boranian, here the link to the idf and used epw: IDFepw