From Then to Now: How Boiler Technology Has Evolved in 75 Years

Over the past 75 years, boiler technology has undergone a remarkable transformation.
What was once a hands-on, manual process reliant on constant oversight has evolved
into a sophisticated, highly efficient system driven by automation, precision controls,
and data.
At Wilkinson, we’ve had a front-row seat to this evolution—and more importantly, we’ve
grown alongside it.

Then: Built to Last

Back in 1951, boiler systems were built with one priority in mind: durability. These units
were large, heavy, and designed to withstand years of use with minimal regard for
efficiency. Constructed from cast iron or thick steel, they were rugged by nature and
built to keep running under demanding conditions.
Many systems at the time relied on coal-fired stokers, though the industry was
beginning to shift as oil and gas conversions became more common. Low-pressure
steam systems were the standard for heating large buildings like schools, hospitals, and
industrial facilities, delivering consistent heat across expansive spaces.
It wasn’t uncommon to see gravity-fed systems operating without electrical
blowers—simple in design, but heavily dependent on manual oversight. Operators were
responsible for monitoring performance, making adjustments, and responding quickly to
any issues that arose.
While dependable, these early systems often came with higher fuel consumption,
limited safety features, and little ability to optimize performance.

Now: Smart, Efficient, and Connected

Today’s boiler systems are engineered with efficiency, flexibility, and performance at the
forefront—and the difference is significant.
Modern boilers can achieve efficiencies of 90% or higher, a major leap from the 50–70%
range typical of earlier systems. That improvement alone translates into substantial
energy savings and reduced operating costs over time.
Fuel sources have also evolved. Where coal and heavy oil once dominated, today’s
systems primarily rely on cleaner-burning natural gas, helping facilities reduce
emissions while improving overall system performance.
System design has advanced as well. Instead of relying on a single large boiler, many
facilities now utilize modular systems made up of multiple smaller units. This approach
allows for better load management, built-in redundancy, and greater overall
efficiency—ensuring systems only use the energy they actually need.
Layer in advanced controls, and the benefits multiply:

•             Real-time monitoring and diagnostics
•             Automated adjustments for optimal performance
•             Remote access and system visibility
•             Improved safety with built-in safeguards

These systems not only reduce energy consumption but also extend equipment life and
minimize downtime—saving both time and money.

Staying Ahead of the Curve

Technology doesn’t stand still—and neither have we.
At Wilkinson, staying ahead means continuously investing in the latest advancements in
boiler technology and ensuring our team is trained to support it. From integrating
cutting-edge equipment like Autoflame to providing hands-on training in the field, we
make it a priority to evolve with the industry.
Our approach has always been simple: understand where the industry is going and be
ready to meet it there.

The Role of Controls and Efficiency

A major driver of this evolution has been the rise of advanced controls and efficiency
solutions.
Our Installation and Service divisions play a critical role in helping customers modernize
their systems. Whether it’s upgrading outdated controls, improving combustion
efficiency through better burners, or implementing smarter monitoring systems, these
solutions help maximize performance while reducing operating costs.
It’s not just about keeping systems running, it’s about making them run better.

Looking Ahead

As we celebrate 75 years, one thing is clear: the future of boiler technology will continue
to push toward smarter, cleaner, and more efficient systems.
And at Wilkinson, we’re committed to being part of that future—just as we’ve been for
the past seven decades.