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How Do I Turn Up The Heat On My Boiler?

Published in Boiler Maintenance 3 mins read

To potentially increase the heat output of your boiler, try adjusting the controller dial inside the boiler's control box.

Here's a breakdown of how to access and adjust the boiler's temperature setting, based on the provided information. However, proceed with caution and always consult your boiler's manual and/or a qualified HVAC technician before making any adjustments. Working with boilers can be dangerous.

Steps to Potentially Increase Boiler Heat Output:

  1. Locate the Control Box: On the side of your boiler, look for a small control box, typically around 5x6 inches in size.

  2. Turn Off the Power: Before opening the control box, switch off the power supply to the boiler at the breaker box. This is crucial for your safety.

  3. Open the Control Box: The control box cover is usually secured with a screw. Loosen and remove the screw, then carefully remove the cover.

  4. Identify the Controller Dial: Inside the control box, you should find a controller with a calibrated dial. This dial controls the boiler's target temperature.

  5. Adjust the Dial: Turn the dial to a higher temperature setting. The reference suggests setting it to 200 degrees Fahrenheit. Do not exceed the maximum temperature specified in your boiler's manual.

  6. Replace the Cover: Carefully reattach the control box cover and secure it with the screw.

  7. Restore Power: Turn the power back on to the boiler at the breaker box.

  8. Monitor Performance: Observe the boiler's performance and the heat output to determine if the adjustment was effective. It may take some time for the change to be noticeable.

Important Considerations:

  • Safety First: Always prioritize safety when working with electrical and heating equipment. If you are uncomfortable performing these steps, contact a qualified HVAC technician.
  • Boiler Manual: Refer to your boiler's manual for specific instructions and safety guidelines. Different boilers may have different control panel layouts and temperature adjustment procedures.
  • Overheating: Setting the temperature too high can lead to overheating, inefficiency, and potential damage to the boiler.
  • Professional Assistance: If you're experiencing persistent heating issues, it's best to consult with a qualified HVAC technician to diagnose and address the problem.

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