hi all . i have a 80,s build chalet bungalow,oil heated/radiators and log burner,the chalet design is fairly open plan with only 2 of three bedrooms 1 bathroom and one toliet, being seperated by doors from living room,kitchen ,dining room 2nd bathroom and upstairs bedroom all being open plan i am looking into running an air source heat pump thru my existing oil system, with the idea of reducing my oil burn to whenever the air source cant keep up . and i feel able to do the instalation, if i can get some basic advice ? 1,is it a sensible ides.2, what the vave/pump implications will be. looking forward to all views/ideas cheers.