Warmth NZ, at Unit 5, 4 Obriens Road in Sockburn, Christchurch, puts its heating under the floor. In a new build, pipes are laid in the concrete foundation, and an air-to-water heat pump warms the water that circulates through them, turning the floor slab into a low-temperature radiator. The same heat pump can supply hot water for taps and showers. A balanced ventilation system brings in filtered fresh air and recovers heat from the stale air it removes. The website says homes with gas, diesel or wood and coal burners can switch to its R290 hot water heat pump, and that the system can also cool the home in summer.
Customers describe the comfort as steady, with running costs they find acceptable. One says the house stays at 20 degrees all day in winter, even with the heat pump off. Another praises the follow-up service: a few years after installation, a technician came the next day to adjust the control settings. Reviewers describe the staff as friendly and knowledgeable. The company serves homes in Christchurch and across New Zealand. Our pick in Sockburn for a home that needs whole-house heating and fresh air sorted in one system.