Preferred Utilities’ Efficiency Efforts at Ohio Air Force Base

Preferred Utilities Manufacturing Corporation pic

Preferred Utilities Manufacturing Corporation

David Bohn is a Redding, CT, executive who directs Preferred Utilities Manufacturing Corporation as president and offers a host of energy-efficient products ranging from industrial boilers and burners to combustion controllers. David Bohn and his Redding, CT, team oversaw a major coal-to-natural-gas boiler conversion process that reflected a 2012 mandate for the Wright-Patterson Air Force Base to be brought under new U.S. Environmental Protection Agency emission limits.

The Dayton, Ohio, base has historically operated using coal- and natural-gas-fired boilers. The coal-fired boilers did not come in under new Maximum Achievable Control Technology (MACT) standards in areas such as particulate and mercury. With compliance deadlines fast approaching, major conversions of two coal-fired boilers were initiated, as well as the conversion two coal-powered high-temperature-hot-water (HTHW) systems. The other units were planned for demolition.

When completed, the upgrades significantly decreased pollutant emissions and reduced the amount of carbon dioxide released by 50 percent. With the boiler modifications having completed last year, they are now fully operational and helping meet sustainability goals.


API Inject-Aire Burner Solutions Drive Energy Efficiency Gains


API Inject-Aire Burner pic

API Inject-Aire Burner

Based in Redding, CT, David G. Bohn serves as president of Preferred Utilities Manufacturing Corporation, guiding a Danbury company that provides power plant equipment engineering and manufacturing solutions. Among David G. Bohn’s successfully completed projects outside of Redding, CT, is the implementation of a new low-emissions, high-efficiency API Inject-Aire burner at Stapleton Houses, which are run by the New York City Housing Authority (NYCHA).

The burner is pioneering in its compliance with recently instituted municipal laws that mandate significant carbon emissions reductions over a three-year period. Specifically, electricity consumption reductions of up to 85 percent compared with burners previously purchased by NYCHA are sought.

The API Inject-Aire burner’s high fuel efficiency technologies include those that reduce boiler heat loss through eliminating half of the start-up and shut-down cycles that are most energy intensive. With the durable burners lasting longer than boilers, there is no need for expensive retrofits throughout the system lifecycle. The burners come with industry leading component warranties to ensure that any issues experienced are quickly resolved in ways that keep the system running.

Preferred Utilities Completes Emissions-Reducing WPAFB Plant Retrofit

Preferred Utilities Manufacturing Corporation pic

Preferred Utilities Manufacturing Corporation

David G. Bohn is a Redding, CT, executive who guides Preferred Utilities Manufacturing Corporation as president. His firm emphasizes energy efficiency in its manufactured products, which encompass industrial oil and gas powered boilers and burners as well as combustion controllers. David G. Bohn and his Redding, CT, team have completed a number of high profile projects including a coal-to-natural-gas boiler conversion assignment at the Wright-Patterson Air Force Base (WPAFB).

Located in Dayton, Ohio, WPAFB faced a significant challenge in meeting new US Environmental Protection Agency “Maximum Achievable Control Technology” regulations, which lay out boiler emission limits. In particular, a pair of central heating plants needed to be modified from coal-firing technologies to incorporate natural gas, which burns more readily.

The Tulsa-based Preferred Special Combustion Engineering (PSCE) division completed retrofits on a variety of plant assemblies, from burners to fans, and undertook extensive performance testing. The late 1970s steam boilers were finally able to meet the temperature, pressure, and output indicated on their original nameplate. In addition, the PSCE solution was successful in reducing emissions of greenhouse gases by one half to within mandated levels.

A Brief Look at the Advanced Performance Inject-Aire Low NOx Burner


The president of the Preferred Utilities Manufacturing Corporation, David Bohn directs new product development and handles corporate revenue and growth efforts. David Bohn took the helm as president after joining the company’s Redding, CT, office and working his way up the ranks. He has spearheaded a number of projects in his leadership role, including the development of the Advanced Performance Inject-Aire (API-AF) Low NOx Burner.

The API-AF offers extensive fuel-burning capability and an impressive efficiency that significantly reduces greenhouse gas emissions and the overall carbon footprint of users. Designed to produce a stable flame regardless of firing rate, the burner can fire a range of fuel oils and natural gas. It incorporates variable-frequency drive motor controllers for enhanced control of the forced-draft fans, which in turn provides more air for combustion and results in a reduction of energy consumption.

Preferred Utilities engineers constructed the burner for use in single-burner applications, such as cast iron sectionals, watertube boilers, and high temperature hot water (HTHW) generators. Its installation at the Stapleton Houses managed by the New York City Housing Authority has contributed to prolonged boiler life, a reduced carbon footprint, and increased electrical and fuel savings. In addition, the API-AF limits NOx emissions and meets compliance standards for Local Law 87, a green building and energy efficiency ordinance set forth by the New York Mayor’s Office of Sustainability.

For additional information on the burner, visit