The Whanganui District Health Board said it was embracing the change to support their clients and patients' mental health as well as physical health.
Many national and international studies had shown there was a link between smoking and increases in anxiety, depression and panic attacks, the DHB said.
Studies had also shown smoking contributed to accelerated cognitive decline and increased the probability of developing dementia or Alzheimer's disease later in life.
McMenamin said there was a great collaborative approach to the transition, with clinicians, staff, whānau and Tangata whai ora - patients and clients - all being involved.
"The team is made up of the smoke-free tobacco co-ordinator, the clinical nurse manager of Te Awhina and four passionate TA staff members who are acting as smoke-free champions," McMenamin said.
McMenamin also said staff at the ward were being encouraged to go smoke-free as well, with free nicotine products provided to all at the ward, and if staff continued to smoke it would have to be off DHB grounds.
Vapes would also be used to help transition people at Te Awhina away from smoking.
The DHB said it had been a great tool to help quit smoking and they were 95 per cent less harmful than cigarettes.