Existing gas heating will be replaced at the end of economic life (approximately 10 years) with a low carbon alternative, thus following the creation & use of property passports.
Bydd gwres nwy presennol yn cael ei ddisodli ar ddiwedd ei oes economaidd (tua 10 mlynedd) gan ddewis carbon isel arall, ac felly ar ôl creu a defnyddio pasbortau eiddo.