Hoover washer/dryer rattling/incredibly loud

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

New Hoover washer/dryer very loud on spin due to insecure installation

The problem

A brand new integrated Hoover washer/dryer was reported as unbelievably loud at maximum spin, with rattling and banging noises.

Likely cause

The strongest supported diagnosis is incorrect installation. The accepted reply states the appliance appears loose, possibly sitting too high or on something other than the floor, and not properly secured with fixing brackets between the floor and worktop, allowing movement during spin.

What fixed it

Check the fitting/installation instructions and ensure the integrated washer/dryer is installed at the correct height, standing properly on the floor, and secured with the correct fixing brackets so it cannot move during spin. The exact repair carried out was not confirmed.

Checks to try

• Observed that the appliance appeared to be installed too high
• Considered whether it was standing on something other than the floor
• Checked whether fixing brackets were fitted to secure the appliance
• Reviewed the fitting instructions

Parts or tools mentioned

• Fixing brackets
• Fitting instructions