Four roadshows will run in Ludgershall, Market Lavington, Marlborough and Devizes.
Each event begins at 2pm and ends at 6.30pm.
The Devizes-based company has teamed up with Southern Electric, Wiltshire Wildlife Trust, the Citizen's Advice Bureau (CAB), the Home Heat Helpline, and local charity Refurbiz, to run the sessions.
The Marlborough event is being held at the Town Hall on 28th November and the Transition Town Marlborough team will also have a small stand there - so do come along and meet us.
The roadshows form part of Aster's Better off Green campaign, which the company is currently running to educate local communities about how they can limit the impact they have on the environment and save money.