Morrison said he was very grateful for the additional support.
"We have been exchanging a number of messages over what are devastating fires."
The New Zealand contingent of six three-person crews, consisting of two taskforce leaders and one liaison officer, will begin operations on Wednesday.
The firefighters are in addition to the six New Zealand personnel who have been helping fight fires in New South Wales.
Last year Pryce and Simons spent a gruelling five weeks fighting wildfires in Canada.
"We would drive a couple of hours in the morning, get to a staging area and either be flown in by helicopter or hike in for maybe an hour and a half, carrying all our gear," Pryce said.
The Whanganui firefighters were based in the southeast area of British Columbia, below the Rocky Mountains.
New Zealand has reciprocal arrangements with Australia, Canada, as well as the US.