3 heat pump installer listings have a business address in Paisley, out of 10 across Renfrewshire. The Boiler Upgrade Scheme doesn't apply in Scotland, so funding here runs through Home Energy Scotland instead. Air source systems are listed for these firms. Ask each firm what it currently installs and whether it serves Paisley.
Grants in Scotland
Scotland has its own grant and loan scheme, not the Boiler Upgrade Scheme.
All 10 installers in Renfrewshire · All counties · Home Energy Scotland guide