Dan Rettig

Dan Rettig’s career began as an HVAC commercial service technician focusing on chillers, cooling towers, heat pumps, boilers and oil burners. He also has experience with multiple control platforms for building integration. Over the last 13 years, he’s been employed by two different boiler manufacturers, including 12 years of product management experience. He holds a Bachelor of Science degree for mechanical engineering and an Associate’s Degree for heating, ventilation, air conditioning and refrigeration. Rettig is currently the product manager for Thermal Solutions, a subsidiary of Heating Solutions Sales Company.

Thermal Solutions Rettig Boiler Clearance

Why Boiler Service Clearance Matters More Than You Think

Lack of clearance with a boiler install is a common problem, writes Dan Rettig, product manager for Thermal Solutions

Dan Rettig

October 8, 2025

A sentence description is a brief statement that summarizes or explains the main idea or purpose of a sentence, highlighting its key point or function within the text.

The existing system piping is an important factor to consider before retrofitting boiler systems.

TODAYS BOILER | MAY 2024

Considerations for Retrofitting from Cast Iron to Condensing Boilers

Developing a plan to convert from standard efficiency to high efficiency boilers begins with a foundational understanding of the two technologies.

Dan Rettig

May 21, 2024

Understanding the best solution for converting to a condensing vent system requires a primer in venting.

HIGH-ACHIEVING SCHOOL CHOOSES HIGH-PERFORMANCE BOILER: Dorman High School installed Lochinvar CREST boilers to provide year-round comfort and hot water

Dan Rettig

October 26, 2020

Paul M. Dorman High School in Roebuck, South Carolina is achieving academic excellence that’s the envy of many other schools across the Southeast.

Case Study

High-achieving school chooses high-performance boiler

Dorman High School installed Lochinvar CREST boilers to provide year-round comfort and hot water.

Dan Rettig

July 12, 2019

Paul M. Dorman High School in Roebuck, South Carolina is achieving academic excellence that’s the envy of many other schools across the Southeast. Dorman High sends 86 percent of its graduates on to college or military service. Last year, Dorman grads earned over $38 million in scholarships.

On Demand As AI workloads and high-density computing push traditional cooling methods to their limits, the data center industry is accelerating the adoption of next-generation HVAC technologies.

In this session, we will cover how to design VRF systems for the U.S. market using new A2L refrigerants. These systems provide an advanced zoning solution by using inverter technology to deliver precise heating and cooling control across multiple zones and spaces.

Dan Rettig

ARTICLES

Why Boiler Service Clearance Matters More Than You Think

Considerations for Retrofitting from Cast Iron to Condensing Boilers

HIGH-ACHIEVING SCHOOL CHOOSES HIGH-PERFORMANCE BOILER: Dorman High School installed Lochinvar CREST boilers to provide year-round comfort and hot water

High-achieving school chooses high-performance boiler

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