Since 1939

For over 80 years, Illingworth Engineering Company has focused on configuring boiler and boiler related equipment for a multitude of industries such as hospitals, military bases, schools, food and beverage and much more. We have the most longevity and experience than any other boiler company in the entire Southeast.

We represent first-in-class manufacturers such as: Cleaver-Brooks, Aerco, Penn Separator, Selkirk, Parker Boiler, Reimer’s Electra Steam and Cain Industries. Proud to be the longest standing authorized Cleaver-Brooks Representative, we value our collaboration to develop leading integrated solutions for our customers.

Our expert staff in both our Jacksonville, Florida and Thomasville, Georgia offices are dedicated to providing prompt, reliable service, whether quoting new equipment or providing parts and technical assistance. Each location is fully staffed by our knowledgeable and experienced parts personnel to assist you 24-hours a day.

What sets us apart is our years of experience and technical knowledge that enables us to provide unique insight which we share with our contractors, engineers and end-use customers to create the best energy solutions for their needs. We have a strong commitment to being a full-service partner in each and every project with which we participate. Customer satisfaction is not just one of our goals, it is our only goal.

Illingworth History

Founded in 1939 by Dick Illingworth, Illingworth Engineering Company (IEC) quickly became the premier boiler sales and service company in the North Florida and South Georgia area.

O.H. Fletchall

O.H. Fletchall

Mr. O.H. Fletchall purchased the business in 1945, and the company has remained in the Fletchall family ever since.

G.W. Fletchall

G.W. Fletchall

O.H.’s son, G.W. Fletchall followed his father’s footsteps making IEC and the boiler industry his career. In 1984, G.W. Fletchall’s son, Mike Fletchall became his business partner at IEC.

Mike Fletchall

Mike Fletchall

Today, Mike Fletchall is the current Principal and President of IEC. He has worked to assemble a team of driven individuals to represent all facets of the organization with the mantra that the customer is number one.

Hess Oil Terminal

Hess Oil Terminal

Our roots and our customers go back generations. In 1954, Hess Oil Terminal used these LR model Cleaver-Brooks steam boilers to heat #6 oil, so it was viscous enough to pump it into tanks.

Memorial Hospital Jacksonville

Memorial Hospital Jacksonville

Today, Illingworth Engineering Company sells and supports the latest in boiler technology. These low emission firetube boilers and deaerators from Cleaver-Brooks provide the steam the hospital needs to operate safely and reliably.

Illingworth was one of the very first boiler product representatives for Cleaver-Brooks and remains the longest-standing representative in the nation. With over 80 years in the boiler industry, our 3rd generation business is proud to sustain long-standing customer relationships that allow IEC to thrive and help our customers run their businesses more efficiently. Many of our customer installations date back to the 1950’s.

Proud Member of the Cleaver-Brooks Representatives Association

Illingworth Engineering has been really good to us over the years. They helped us with an upgrade conversion from fuel oil to natural gas on our Cleaver-Brooks steam boiler. This was a huge saving in our overall expense for fuel and dependability. They have the best service tech’s and are very knowledgeable. The fact that they are 24/7 has pulled us out of plenty of jams. Overall, the customer service is hands down! They are our boiler people.

Plant Facility Manager, Savannah GA