Multi-unit, hospitality, and business hot water solutions
Commercial premises have very different hot water demands compared to a standard residential home. Whether you are running a busy kitchen, managing a multi-unit building, or operating a customer-facing business, reliable hot water is not optional — it is essential to daily operations. When the hot water fails in a commercial setting, it affects your staff, your customers, and your bottom line.
We work with a wide range of commercial and multi-unit clients across Auckland, including:
For many commercial applications, a cascaded continuous flow system is the ideal solution. This involves manifolding multiple continuous flow units together — typically Rinnai Infinity or Rheem units — so they operate as a single integrated system. As hot water demand increases, additional units fire in sequence to meet the load. When demand drops, units shut down to save energy.
This approach gives you commercial-grade output without the bulk of a massive storage cylinder. A cascaded system with three or four continuous flow units can deliver well over 50 litres per minute of hot water, which is more than enough for most hospitality and multi-unit applications.
Each unit in a cascaded array is connected to a common manifold and controlled by a sequencing module. When the first unit reaches its maximum flow rate, the controller brings the next unit online. The units rotate which one fires first, ensuring even wear across all units over time. If one unit needs servicing, the remaining units continue to supply hot water — there is no single point of failure.
In some situations, particularly where very high peak demand occurs over short periods, a large commercial storage cylinder may still be the best option. This is common in accommodation facilities where dozens of showers run between 6am and 8am, or in commercial laundries. We can assess your peak demand profile and recommend either a dedicated commercial cylinder, a hybrid setup combining storage with continuous flow booster units, or a full cascaded system — whichever delivers the best performance for your specific situation.
Commercial premises are subject to stricter gas safety requirements than residential properties. All commercial gas installations must comply with NZS 5261 (gas installation standard) and are subject to inspection by Energy Safety. If your building requires a Building Warrant of Fitness, the gas system must be included in the compliance schedule with regular inspections by a qualified person.
We handle the full compliance process — from initial installation to certification, including all necessary gasfitting certificates. Every commercial gas installation we complete is done to code, properly documented, and ready for inspection. There are no shortcuts when it comes to gas safety in a workplace or public building.
Commercial settings have specific requirements around water delivery temperatures to prevent scalding. Thermostatic mixing valves (TMVs) are required in most commercial applications to blend hot and cold water to a safe, controlled outlet temperature. This is especially critical in early childhood centres, rest homes, public bathrooms, and any facility where vulnerable people may come into contact with hot water.
TMVs must be tested and maintained regularly to ensure they are functioning correctly. A failed mixing valve can deliver dangerously hot water to an outlet, creating a serious liability issue. We install, test, and service TMVs as part of our commercial hot water work.
Commercial hot water systems work harder than residential ones and need regular maintenance to stay efficient and compliant. We offer scheduled maintenance contracts tailored to your system — whether that is a quarterly inspection for a high-use hospitality setup or an annual service for an office building. Regular servicing catches small issues before they become expensive failures, keeps your gas compliance up to date, and ensures your system runs at peak efficiency year-round.
Our maintenance visits include a full system check, burner inspection, heat exchanger flush where needed, anode rod inspection on storage cylinders, TMV testing, and a written report for your records.
We install and service commercial hot water systems right across Auckland, including Ponsonby, Newmarket, Auckland CBD, Takapuna, Albany, East Tamaki, Penrose, Parnell, Grey Lynn, and the Britomart precinct. Whether you are fitting out a new restaurant in Ponsonby, upgrading the hot water in a Newmarket office block, or replacing an aging system in an East Tamaki warehouse, we can help.