Posted by: @adisharma

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Heat Pump: The heat calculations have not be done right per room and as the flow rate mentioned on the MCS certificate (45) is not achieving the desired heat output. Currently the flow rate is sitting at 55 which is the max it can go. What i need is to get the heat loss calculations done again to identify the right size of radiators for each room that will deliver the desired heat output at 45 flow rate. Don't think I am qualified enough to take this on myself. Do you have any suggestions

Are you operating the heat pump 24*7 with all, or almost all, trvs fully open, room thermostat if any set at least 2C above target and weather compensation adjusted accordingly.  If not then it may be that all you need to do is tweak the controls. 

Posted by: @adisharma

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Solar Panels: The MCS certificate says that i can get a heat output over 4KwH but in actual reality I have received ever anymore than 2.7Kwh. Not sure if there is anything that I can do to improve it.

Solar panels are specified by 'kWp' (kW peak) output which is the output when the sun is falling perpendicular to the panels.  Most installations come close to the peak but don't necessarily match it.  You imply you are in Scotland which typically will reduce output (unless you have a steep roof) simply because the sun is lower in the sky.  What angle (to the vertical) and orientation (compass angle) are your solar panels at?

Most likely your inverter is anyway specified at 3.68kW (IE 16A at 230V), the max allowed without express permission from your electric company.

I apologise if you have already considered these matters, but we need first to check it's not something relatively simple.

I'm more than happy to try to help.

Posted by: @adisharma

↑

Heat Pump: The heat calculations have not be done right per room and as the flow rate mentioned on the MCS certificate (45) is not achieving the desired heat output. Currently the flow rate is sitting at 55 which is the max it can go. What i need is to get the heat loss calculations done again to identify the right size of radiators for each room that will deliver the desired heat output at 45 flow rate. Don't think I am qualified enough to take this on myself. Do you have any suggestions

Are you operating the heat pump 24*7 with all, or almost all, trvs fully open, room thermostat if any set at least 2C above target and weather compensation adjusted accordingly (IE as low as you can get it consistent with just heating the house).  If not then it may be that all you need to do is tweak the controls. 

If you are already doing this can you provide some more info about heat pump, controls and calculations/observed issues?

Posted by: @adisharma

↑

Solar Panels: The MCS certificate says that i can get a heat output over 4KwH but in actual reality I have received ever anymore than 2.7Kwh. Not sure if there is anything that I can do to improve it.

Solar panels are specified by 'kWp' (kW peak) output which is the output when the sun is falling perpendicular to the panels.  Most installations come close to the peak but don't necessarily match it.  You imply you are in Scotland which typically will reduce output (unless you have a steep roof) simply because the sun is lower in the sky.  What angle (to the vertical) and orientation (compass angle) are your solar panels at?

Most likely your inverter is anyway specified at 3.68kW (IE 16A at 230V), the max allowed without express permission from your electric company.

I apologise if you have already considered these matters, but we need first to check it's not something relatively simple.