» Ruth O’Donnell

UL Approval & Success

We have reason to celebrate! Preferred successfully completed the UL testing of our 1200 HP Ultra-Low NOx Ranger burner at Johnston Boiler. We now have UL listing on the following: API-AF : 50 HP through 600 HP API-RF: 100 HP through 1200 HP Ranger-RF: 100 HP through 1200 HP We also have ULB listings on the entire range […]

Sustainable Solutions for Special Fuels

Made in the U.S.A., this project demonstrated a a sustainable, safe reclamation of waste hydrogen with high efficiency and carbon foot print reduction. An American based chemical manufacturer decided to make use of their waste hydrogen which significantly reduced their use of fossil fuel for their process steam requirements. But the customer needed the right company to deliver […]

Pros of Burning Oil as a Fuel

NOx in Heating oil is significantly reduced: heating oil can contain less than 15 parts per million of sulfer. That is a 200-fold decrease in sulfer since 2014. Heating oil is a partially renewable fuel: more and more heating oils contain 2% – 5% plant derived biofuel, and likely to increase over time. Biofuel is a renewable energy […]

Retrofit “Insert” for Sustainability Goals

An innovative, low-cost combustion solution to meet sustainability goals, emission reduction requirements, and extreme efficiency improvements. This installation is at an American college with aggressive sustainability goals. Our solution for them–a burner and controls upgrade on one of their existing 700 HP Cleaver Brooks boilers to achieve their emission and carbon reduction milestones, while increasing combustion efficiency and […]

Letter to the Editor: Today’s Boiler May 2018: Warning–A Boiler Breakdown may be in your Future story

-Today’s Boilers This is a Letter to the Editor written by David Eoff of Preferred Utilities to Today’s Boiler regarding an article in the Spring 2018 edition called: Warning–A Boiler Breakdown may be in your Future story. “As Geoff Halley, the author of this article stated, the low water cutout switches that prevent a boiler from dry firing […]