Kettling And Your Boiler: Get Answers To The Questions You May Have

Posted on: 1 March 2022


One of the most common reasons why boiler repair is needed is due to an issue called kettling. Kettling is common with boilers that have not been properly repaired or are nearing the end of their lifespan. If you use a boiler to heat your home, kettling is something you should be aware of and listening for. Here are a few of the questions you may have about this boiler problem and the answers to the questions. 

What Is Kettling? 

Kettling is a problem with boilers that is caused by hard water deposits building up within the heat exchanger of the unit. These hard water deposits can prevent the flow of water throughout the unit, which causes the water to sit in place. As the unit continues to operate, that stuck water continues heating since it cannot circulate and turns to steam. That steam then increases the pressure within the heat exchanger, which creates a sound that many equate to a kettle that is boiling on a stove. In fact, the sound is so similar that kettling was named after a kettle. 

What Problems Does Kettling Cause? 

Kettling can cause many issues related to your boiler. One of the biggest problems related to kettling is problems with the heat exchanger. The pressure can build up so much that the heat exchanger can burst and your boiler can begin to leak. The pressure can also damage the heat exchanger even if it does not burst. Kettling can also cause problems to other parts of the unit. Kettling reduces or prevents the unit from producing heat for your home, which means your unit may run for long periods of time trying to heat your home. This can put stress and strain on other parts, including belts and tubes. 

Can You Prevent Kettling? 

Kettling is caused by hard water buildup. If you have hard water in your home, installing a water softener can prevent kettling. Additionally, having your boiler properly maintained and cleaned on an annual basis can minimize the chances of hard water building up within the unit. This reduces the chances of kettling occurring. 

If your boiler is experiencing kettling, it is important that you have boiler repair completed as quickly as possible. Not only can the kettling sound be annoying, but kettling can cause issues that can affect how well your boiler can heat your home and how long the boiler lasts. Reach out to a boiler repair company if you hear your boiler making kettling sounds.