ᐅ Heat pumps consume a significant amount of energy and can generate considerable noise.
Created on: 17 Jan 2024 18:26
E
Eldirwars
Hello everyone,
We have been living in our new house for one month now and are experiencing significant noise issues. The noise comes from the manifold of the underfloor heating system as well as the pump itself, which is very loud. The sounds are mostly sharp clicking or ticking noises, especially noticeable in the bedroom. The flow rate and the pump settings have been adjusted, but nothing has improved. However, it is always quiet in the early morning hours. Could it possibly be due to a setting on the unit? The heating technician has already been here but is unsure of the cause. Another technician from Bosch is scheduled to come and take a look, but I’m not sure if the pump is the problem. Also, the house is barely warming up at the current temperatures, and I am using more than 30 kWh daily, which seems very high for a 150 m² (1,615 sq ft) home.
We have been living in our new house for one month now and are experiencing significant noise issues. The noise comes from the manifold of the underfloor heating system as well as the pump itself, which is very loud. The sounds are mostly sharp clicking or ticking noises, especially noticeable in the bedroom. The flow rate and the pump settings have been adjusted, but nothing has improved. However, it is always quiet in the early morning hours. Could it possibly be due to a setting on the unit? The heating technician has already been here but is unsure of the cause. Another technician from Bosch is scheduled to come and take a look, but I’m not sure if the pump is the problem. Also, the house is barely warming up at the current temperatures, and I am using more than 30 kWh daily, which seems very high for a 150 m² (1,615 sq ft) home.
D
Daniel-Sp19 Jan 2024 22:37I am not familiar with the Bosch heat pump, but in my system the heating circuit pump runs during heating operation even when the compressor is off. The heat pump is usually controlled based on the return temperature. How is the control supposed to work if the heating circuit pump is off?
E
Eldirwars21 Jan 2024 13:06The compressor actually runs almost continuously; when it shuts down (for example, at night during the setback, which cannot be avoided because continuous operation is simply too noisy), it definitely becomes quieter. I opened the unit again and switched the pump from level 1 back to level 3.
Since, as you mentioned, all valves should be open, it would be extremely loud at level 3. So, I switched it back to level 1. I have the feeling that the compressor would run continuously anyway. In the morning, it switches to domestic hot water mode for 4 hours (which seems very long to me), then it needs to defrost on the outside, and by the time it heats again, it barely manages to reach the desired temperature. So the unit basically runs all day and consumes a lot of electricity accordingly.
Since, as you mentioned, all valves should be open, it would be extremely loud at level 3. So, I switched it back to level 1. I have the feeling that the compressor would run continuously anyway. In the morning, it switches to domestic hot water mode for 4 hours (which seems very long to me), then it needs to defrost on the outside, and by the time it heats again, it barely manages to reach the desired temperature. So the unit basically runs all day and consumes a lot of electricity accordingly.
D
Daniel-Sp21 Jan 2024 13:12What hot water temperature is set then? Do you have a separate hot water tank or one of those combination storage units?
E
Eldirwars21 Jan 2024 13:35It is a separate storage tank, set to 48°C (118°F), and it reheats once the temperature drops below 36°C (97°F). Currently, it heats once a day but takes a very long time to reach the set temperature. Perhaps it needs to defrost the unit from the outside in between.
The link above was unfortunately removed. It was meant only for clarification. A Wilo pump is installed, model Para.
When the pump is off, the noise completely disappears.
The link above was unfortunately removed. It was meant only for clarification. A Wilo pump is installed, model Para.
When the pump is off, the noise completely disappears.
D
Daniel-Sp21 Jan 2024 14:354 hours to heat water to 48°C (118°F) is not normal, unless you have an outside temperature of -18°C (0°F) and only a 2 kW heat pump.
Is the heat pump itself making the noises? Or are they just transmitted sounds?
What else is installed before the radiator valve (HKV) that could be a possible source of the noise?
Is the heat pump itself making the noises? Or are they just transmitted sounds?
What else is installed before the radiator valve (HKV) that could be a possible source of the noise?
Similar topics