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Is this normal? Is there any way to stop this? We were reassured several times when discussing models to consider that the AC would not be audible. I am honestly surprised therefore to be told that this is normal and to not have been warned.

Your installer should be able to sort this. First thing to check is that the pumps are fitted in accordance with manual and not touching anything else as vibrations transferred = noise amplified. (To recreate this noise and to prove that it is coming from the condensate pump you can remove the filter from the AC unit and pour a small amount of water, ~1/2 cup, on to the coil).

underlineattic wrote: ↑May 10th, 2020, 4:51 am Your installer should be able to sort this. First thing to check is that the pumps are fitted in accordance with manual and not touching anything else as vibrations transferred = noise amplified. (To recreate this noise and to prove that it is coming from the condensate pump you can remove the filter from the AC unit and pour a small amount of water, ~1/2 cup, on to the coil).

If your existing pumps can't be made to be quiet enough there are plenty of other options available, best in residential situations is gravity - just a pipe downwards to a drain but unfortunately this is rarely possible unless the AC unit is fitted on an outside wall. Looking at pump options instead, there are pumps which only would start once per day and there are also pumps that can be fitted remotely, away from the indoor units.

Thank you so much that is really helpful and appreciated. If I get fobbed off by the installer who says.... "it's supposed to be like that" what do you advise I do? Is there anyone trusted and recommended in the South London area who could review for a second opinion?

Sometimes, because the aircon is on, the room users shut the windows to save on running costs, and in doing so they shut out the fresh air. After a while the stale air can have a detrimental effect on their alertness etc. Some aircon units can bring in enough fresh air without using windows, which should resolve that aspect.

That is good for the customer as you do no longer should be a Sherlock Holmes to figure some mysterious feature that a few remote advertising team got here up with to make their product appearance spiffy. On the downside, Carrier is a top rate product, and the various elements for their merchandise are proprietary. Think of Carrier as a Cadillac and expect Cadillac provider from the Carrier HVAC Contractor that offerings the device for you.

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