Air Conditioning Service Nowra
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General Large Capacity Three Phase R32: Whole Home Power for Bigger Nowra Homes

When bigger homes across the Shoalhaven need serious air conditioning Nowra families can rely on, we often point them to the General Large Capacity Three Phase R32 ducted system. Built for larger properties running three-phase power, it spans three models from 18kW right up to 22.4kW cooling and 25kW heating. R32 refrigerant helps keep running costs down, and our professional installation ensures the whole system is sized correctly for your floor plan.
Built for Nowra and Shoalhaven conditions
Nowra's summer humidity and the salt air rolling in off Shoalhaven Heads and Culburra Beach both take a toll on outdoor units, which is why any air conditioning Nowra homeowners choose needs real coastal resilience built in. The Large Capacity Three Phase R32 range uses a Blue Fin Heat Exchanger to resist corrosion, and its automatic static pressure adjustment copes well with the long duct runs common in the bigger, double storey homes we see across Bomaderry, Worrigee and Tapitallee. If your property already has three-phase power, this range gives you the headroom to condition the whole house from one outdoor unit.
Our honest take
Our honest take: the Large Capacity Three Phase R32 is the system we reach for when a home is simply too big for a standard single-phase ducted unit. We like that all three models, the 65, 72 and 90, share the same reliable DC inverter platform and Blue Fin coastal protection, so you are not compromising on durability by going bigger. The auto restart and demand response compatibility are handy extras for the Shoalhaven's occasional storm related outages. Our one honest caveat is that you need three-phase power already connected, and upgrading that can add cost if your switchboard is not set up for it.
Key features
- Three capacity options from 18kW to 22.4kW cooling, up to 25kW heating
- Runs on 400V three-phase power for larger homes and bigger duct runs
- Blue Fin Heat Exchanger for coastal corrosion resistance
- Automatic Static Pressure Setting Adjustment for consistent airflow
- All-DC components including compressor, fan motors and expansion valve
- Zone control with connectable fresh air and distribution ducts
- Touchpanel and Wi-Fi compatible controllers (UTY-RNRT, UTY-ANY2, UTY-RVNYN)
- 5 year parts and labour warranty
Technology
This range runs on General's R32 inverter platform, with all-DC compressor, fan motors and expansion valve working together to fine tune output rather than cycling fully on and off. Automatic Static Pressure Setting Adjustment reads the ductwork and adjusts fan speed to suit, which matters on larger installs with longer runs and more outlets. Zone control lets you condition only the rooms in use, and the system connects to touchpanel or Wi-Fi controllers such as the UTY-RNRT and UTY-ANY2 for scheduling and remote access. Demand response compatibility also means the system can respond to grid signals during peak periods.
Which system should you choose?
Compared to the Large Capacity Single Phase R32, the three-phase version simply has more headroom, with the ARTH90KHTA-3PH reaching 22.4kW cooling and 25kW heating against the single-phase model's 18kW to 20kW rating. If your Nowra property does not have three-phase power connected, the single-phase large capacity unit is usually the more practical choice. Against our High Static Single Phase R32 range, this three-phase system is built for genuinely larger floor plans rather than duct flexibility, so the right pick really comes down to your home's size and existing power supply, which we are happy to assess on site.
Installation, warranty and upgrades
We handle the full installation of your Large Capacity Three Phase R32 system, including checking your switchboard is ready for three-phase power before we start. Every unit carries General's 5 year parts and labour warranty when installed by a licensed dealer like Denali Air Conditioning. We can also talk through zoning upgrades, ducted humidity control add-ons, and finance options to suit your budget.
Next Steps
Get a free, fixed-price quote from Denali Air Conditioning. Nowra and Shoalhaven's air conditioning experts. Call 0480 170 143 or request a quote online.

Trusted Reviews From Real Customers
I'm a builder that uses Denali Air Conditioning in Nowra repeatedly. Marcus is very easy to work with and great at coming up with solutions. He is prompt and thorough. The team are polite and neat. It really makes things easy from a builders perspective.
I would definitely recommend Marcus and his team. They were friendly, reliable and great to deal with. They cleaned up after themself and showed up when promised. Very happy with our air conditioning service in Nowra.
Marcus was awesome right from the start. He responded quickly and helped us to find the best air conditioning option for our home and budget in Nowra. Very happy with the outcome. Thanks Marcus.
I had an excellent experience with Denali Air Conditioning in Nowra! Marcus and his team were incredibly friendly, professional, and a pleasure to work with from start to finish. They took the time to explain everything thoroughly and ensured that the job was completed to a high standard. The quality of their work was exceptional, and they left everything clean and tidy. I highly recommend Denali Air Conditioning in Nowra for anyone looking for reliable and top-notch service.