As with the rest of your home, the HVAC, system and the water heater are prone to malfunction from time to time. One such problem is boiler kettling. This is a potentially dangerous situation that requires immediate homeowner attention.

What Is Boiler Kettling?

Kettling occurs when pressure builds up in the system’s heat exchanger. This is the part that heats the water as it flows through the system. Kettling takes place as hard water enters the system and leaves deposits in the pipes. This restricts flow much the same way clogged arteries restrict blood flow to the heart. The restricted flow causes heat to become trapped in the boiler; this is where the trouble starts.

Why Kettling Is Dangerous

Despite its name, a boiler doesn’t actually boil water. It heats it to temperatures below the boiling point before distribution throughout the home. The buildup of heat causes the water to evaporate into steam. The steam accumulating in the heat exchanger causes the entire boiler to rumble.

Some homeowners fear that this can cause the boiler to explode. Most modern systems have safety mechanisms that automatically shut the system off if the heat exceeds a set threshold. However, the safety mechanism itself isn’t 100% fail-proof and can malfunction.

Boiler Maintenance

A technician will need to access the heat exchanger and remove the accumulated mineral deposits. This will also include a checkup to rule out other potential causes for the kettling. To prevent the problem from recurring, consider installing a water softener or water treatment system.

We Prevent Boiler Kettling

Boiler and furnace maintenance are not DIY jobs and require professional repair. Leave the duty to All Points Heating. As the winter chill sets in, be sure your heater is in tip-top shape to prevent boiler kettling.

Furnace and Boiler Maintenance

Serving customers from Arlington to Renton and Bellevue to Shoreline, including Seattle, Redmond, Bothell, Edmonds, Lynnwood, Everett, Marysville, Mill Creek, Woodinville, Kirkland, Mercer Island and the surrounding area.