Free energy conservation?

[James Bell]

One of my tenants gave me a form from a non-profit here in the San Francisco Bay area offering free energy conservation measures to low-income tenants. It includes measures such as weatherization, new windows, or a furnace free of charge to the owner. The offer comes from Central Coast Energy Services.  I'm looking for advice and experience about the benefits and risks of taking advantage of this offer.  Thanks much!!

-Jim