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I am modeling a single family residence located in the UK. The building has an fuel oil boiler with radiators in each room for heating. I am trying to assess the impact of underfloor electric heating pads instead of the radiators. I have modeled internal source construction and placed the pads between insulation and wooden flooring layers. I have also set the temperature schedules same for zone as well as for Low Temp Radiant Elec. I am observing high amount of heating unmet hours and also the heating energy is doubled, which is the opposite of what I was expecting. Can anyone throw some light on this?

I am modeling a single family residence located in the UK. The building has an fuel oil boiler with radiators in each room for heating. I am trying to assess the impact of underfloor electric heating pads instead of the radiators. I have modeled internal source construction and placed the pads between insulation and wooden flooring layers. I have also set the temperature schedules same for zone as well as for Low Temp Radiant Elec. I am observing high amount of heating unmet hours and also the heating energy is doubled, which is the opposite of what I was expecting. Can anyone throw some light on this?

I am modeling a single family residence located in the UK. The building has an fuel oil boiler with radiators in each room for heating. I am trying to assess the impact of underfloor electric heating pads instead of the radiators. I have modeled internal source construction and placed the pads between insulation and wooden flooring layers. I have also set the temperature schedules same for zone as well as for Low Temp Radiant Elec. I am observing high amount of heating unmet hours and also the heating energy is doubled, which is the opposite of what I was expecting. Can anyone throw some light on this?