The answer to 'why is my boiler high energy bills' is that your boiler may be operating inefficiently, resulting in higher energy usage and costs. Some common causes include leaks, sediment buildup, old age, or improper sizing of the boiler for your home. Symptoms may include uneven heating, strange noises, or rapidly rising utility bills.
To troubleshoot, first check for any obvious leaks or damage to the boiler. You can also try flushing the system to remove sediment buildup. However, if the boiler is old or the issue is more complex, it's best to call in a professional HVAC technician to diagnose and repair the problem. They can inspect the system, identify the root cause, and make any necessary adjustments or replacements to improve efficiency and lower your energy bills.