1. HVAC Benchmark Engineering – written and presented by Al Ferreira at the 1994 IFMA Conference in St. Louis Missouri. The article described the benchmarking process for HVAC maintenance and energy usage. "Benchmarking engineering focuses on what is not operating to specification in an existing system and then calculates the affect of the mis-operation in excess energy usage, repair costs, and comfort complaints."

2. Upgrading Intelligent Buildings with Direct Digital Controls – written and presented by Al Ferreira at the 1995 IFMA Conference in Atlanta, Georgia. Upgrading older energy management systems can be done very cost effectively to take advantage of the newest technology.

3. Effective Integration and IAQ with HVAC and Energy Management – written and presented by Al Ferreira at the IFMA Workplace Conference in Miami Beach, Florida, September 19, 1995. “If someone in your facility gets sick and calls OSHA, some states (such as California) require the facility owner to produce their maintenance records within 48 hours.”

4. Finding the Value in Utility Deregulation – written by Craig Miller, Facilities Design and Management, February 1999. “Al Ferreira of Hayward, California-based Ferreira Service Inc. an energy maintenance contractor and consultant for major California utility companies says negotiating rates is not the real issue.”

5. Performance Based Contracting: Achieving Projected Energy Cost Reductions – written by Al Ferreira for Facility Management Journal (May/June 1996) presents a case history of Southern California Gas Company’s energy projects for all of their service centers. A peformance based contract for over $1,000,000 that saved $548,060 the first year.

6. Saving Energy Comfortably – a brochure outlining the steps to reduce energy cost while improving comfort conditions – produced by Ferreira Service Inc. 1990 “Why with today’s smart buildings technology, fifth generation energy management systems, sophisticated direct digital temperature controls, and Title 24 Building codes, do we still have buildings that are uncomfortable and expensive to operate?”