


Cosy Heat Pump Install Quote
Hello, looking for advice on this quote from Octopus for 9kW Cosy heat pump.
I live in a three-bed mid-terrace house in Southwest england with an old 90's oil boiler. I've gotten a quote from another installer but was unimpressed with the survey whereas Octopus was friendly and very thorough. I'm waiting on a British Gas survey next week.
My main thoughts/worries are that the 9kW heat pump is oversized for the house, a 7kW may be more suitable (Octopus doesn't offer)?
The surveyor said all radiators would need replacing but the final quote has only 3 as they plan on running the heat pump at a higher flow temperature, will this cost more or be less efficient?
There's usually only two of us in the house, sometimes 3. Is the hot water boiler too oversized then, Octopus recommend a size up so our 3-bed has a tank for around 4.
We're a pretty frugal house, switch off lights/electrics etc.
Any other thoughts or recommendations would be greatly appreciated, thankyou!