The May 2016 editions of the Building Technologies Office Digest. May 25, 2016: Low-GWP HVAC&R Strategy, Energy Modeling Payback May 19, 2016: Better Buildings Results, Peer Review Presentations May 12, 2016: Cold Climate Heat Pump Success, Funding Awards Announced May 4, 2016: Tenant Efficiency Opportunity, Designing Efficient Military Bases