Diagnosis. Treatment. Rhonchi and rales are lung sounds that can be heard with a stethoscope. Rhonchi are described as gurgling or bubbling sounds, while rales are described as crackling sounds. The sounds happen when air passes through accumulated fluids in the airways due to asthma, pneumonia, COPD, or other respiratory conditions.
So if the problem persists, be sure to contact the professionals. 3. Bleed the central heating pump. Just like noisy radiators, another central heating pump problem is caused by trapped air locks in the pump. To remove the air locks you will need to bleed your heating pump. This is a similar job to bleeding a radiator.
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