The Ministry of Business, Innovation and Employment estimates around 100,000 rentals didn't meet the new insulation standards that came into effect on July 1, but hundreds of Whanganui rental properties were up to scratch well in advance.
The changes to the Residential Tenancies Amendment Act 2016 require rentals to have ceiling and underfloor insulation that is at least 70mm thick and in a reasonable condition.
Tenants can claim $4000 in damages if they're living in an uninsulated rental.
Allan Galloway, Tenancy Services national manager dispute resolution, said since July 1 the Tenancy Services call centre has received 1271 calls from people seeking advice on insulation.
The Tenancy Compliance and Investigations Team (TCIT) has received 68 emails regarding potential non-compliance issues while the Tenancy Services Dispute Resolution has received and assessed 106 Tenancy Tribunal applications claiming a landlord is in breach of insulation standards.