This easy-to-use guide is intended for property managers, green team members, and other decision-makers in faith communities who wish to know how their buildings work and reduce the amount of energy they use. It covers how to tune-up your building through regular maintenance actions; details a range of retrofits that can help you save energy and money; offers insights to lighting, heating, and cooling systems; and concludes with a 20-page do-it-yourself energy audit.