Skip navigation

Chicago’s Choice Since 1961


24/7 Emergency Service

Chicago’s Choice Since 1961


24/7 Emergency Service


Althoff Industries, Inc. Blog

Signs Your Commercial Boiler Needs Service


Whether you run a hotel, office building, manufacturing plant, or healthcare facility, the commercial boilers delivering the necessary heat are essential for your business to keep running. If you can get ahead of repair issues before they become major problems, you’ll avoid numerous headaches.

We’re here to help you with a list of the warning signs that your boiler needs professional service. If you detect any of the signs below, reach out to our trained team for repairs. We’re the experts when it comes to commercial boilers in Naperville, IL and throughout Chicagoland.

1. Irregular Heating Patterns

Uneven or inconsistent heating is an early warning of a boiler in trouble. It usually indicates that the boiler has started to lose its heating capacity. Pay attention to hot and cold spots around your facility and for temperature fluctuations. You may have a boiler with too much limescale buildup, malfunctioning temperature sensors, or a broken circulation pump. 

2. Strange Noises

Boilers run quieter than many types of heating systems, so when one starts to make noticeable noises or odd sounds, it’s cause for concern. These noises may be due to limescale, sediment build-up, a spike in pressure, or trapped air. Always move quickly to have a noisy boiler investigated for repair issues.

3. Rising Energy Bills

You keep a close track on expenditures for your business, so don’t ignore sudden spikes in your energy costs. They may indicate your commercial boilers are malfunctioning and draining more energy than necessary to run. 

4. It Takes Too Long to Get Warm

Does it feel like it takes far too long for the boilers in your business to do their jobs? The boilers may raise the indoor temperature to the desired target, but if it takes twice as long to achieve that goal, you may have a dying or malfunctioning boiler on your hands. Some possibilities include delayed ignition, poor gas flow, sediment blocking the heat exchanger, or a failing circulation pump. 

5. Visible Leaks or Corrosion

The moment you see any leaks from a boiler, have it shut off and call for professionals to fix the problem. It doesn’t matter how “small” the leak may seem, it’s a sign of a major problem. Also look out for any signs of corrosion on the boiler and its pipes. Sometimes technicians can replace rusted components if caught soon enough—but if corrosion is left alone, it will catastrophically damage the boiler to the point where replacement is the only option. 

6. Fluctuating Pressure Readings

The pressure in a boiler is supposed to remain within a specific range. If you see the pressure gauge of one of your boilers going outside this range (either above or below), you may have water leaks, air getting into the boiler, a malfunction pressure relief valve, excess sediment and limescale, or other problems. 

7. Foul Odors or Discolored Flames

These are major warning signs of combustion problems in a gas boiler. The flame color should always be blue. If it changes to red, yellow, or orange, the combustion process is burning something other than gas—and you don’t want that, as it can mean the release of carbon monoxide. Odors of rotten eggs also warn of escaping gas. Shut the boiler off first and then call us for help.

Rely on Althoff Industries, Inc. for all your commercial heating and cooling needs in Chicagoland. Challenges Accepted!

Comments are closed.