Japanese-engineered continuous-flow hot water with industry-leading 12-year warranties. AHHAC is an authorised Rinnai installer.
Rinnai pioneered continuous-flow gas hot water and remains the category leader. Their Infinity range is rated for 6+ outlets simultaneously with stable temperature control.
We install the full Rinnai range including Infinity, Builders' Edition, and the Demand Duo storage-and-continuous-flow hybrid.
Japanese engineering quality, 12-year heat exchanger warranty (industry-leading), reliable temperature control even with multiple draws, smartphone integration via MyRinnai app, available with optional pre-heat for instant hot water. They simply work for 20+ years.
Infinity range covers most homes — sized 16, 20, 26 or 32 (litres-per-minute peak flow). Larger Demand Duo combines storage + continuous-flow for very high demand. We'll size based on number of bathrooms and simultaneous use scenarios.
Yes — MyRinnai app integrates with Wi-Fi-equipped models. View energy use, set scheduled temperature changes, get error alerts. Compatible with Google Home and Amazon Alexa.
"AHHAC delivered our 22-zone underfloor system on time, on budget and to spec. The crew were tidy, the documentation was thorough, and the commissioning was textbook."
"We've worked with AHHAC for 17 years. They've installed and serviced our hot water plant across three commercial buildings — and they pick up the phone on weekends."
"Three mobs quoted us; AHHAC's design was the only one based on a proper heat-loss calculation. The system runs beautifully — the others would've been oversized and expensive."