Assertion: heat pump | /r/HasProperty | difficult to install
Facets:
value: fairly
type: DEGREE
Source sentences:
text: Heat pumps are fairly difficult to install considering that research must be made in order to understand the movement of heat, local geology, specifically for ground source heat pumps and the heating and cooling requirements for your household.
text: They might be difficult to install — especially ground source heat pumps, for which installation depends on the local geology and your garden becomes a construction site.