During the closure period the indoor spas will also be closed to the public, for safety reasons, but the indoor 25 metre pool and outdoor pools will remain open.
Swim clubs and recreational swimmers will still be able to use both lane pools but there will be reduced lane space at times.
Maintenance work on the pool will include checking of the underground pipes, refurbishing of the pumps, and servicing of the pool filtration systems.
The work is expected to be completed by early December.
Rotorua Aquatic Centre users can keep tabs on how the pool upgrade is progressing by following the centre's website, Facebook page, or downloading the Rotorua Aquatics app from the app store.