Yes. In New Zealand, all permanent gas appliance installations in homes, baches, and RVs must be carried out by a certified gasfitter by law. This ensures the installation meets AS/NZS 5601 safety standards, including correct ventilation and gas-tight connections. A gasfitting certificate is essential for your insurance coverage and to protect your product warranty. For portable camping stoves, a professional is not required, but for any built-in Challenger unit, a certified pro is a must.