Energy efficiency has become one of the biggest deciding factors for Kiwi homeowners choosing a hot tub or spa pool. With rising power costs and a growing focus on sustainability, the question isn’t just “Which hot tub feels great?”, it’s “Which hot tub runs efficiently all year round?”
Moji Hot Tubs stand out because they combine naturally efficient foam insulated hot tubs with advanced SpaNet heat pump technology. The result: lower running costs, faster heating, and dramatically reduced energy use.
Below is a deep dive into what makes Moji one of the most energy‑efficient hot tub options in New Zealand.
SpaNet Heat Pumps: The Heart of Moji’s Energy Efficiency
SpaNet’s PowerSmart heat pumps are widely recognised as some of the most efficient spa heating systems available. They deliver up to 5.5 kW of heat for every 1 kW of electricity consumed, effectively generating up to 4.5 kW of free heat.
Key efficiency advantages include:
- Up to 75% less energy use compared to standard electric spa heaters.
- 55% less energy use than natural gas heating.
- Smart control systems with timers, diagnostics, and intuitive temperature management.
- Quiet, corrosion‑resistant design built for long‑term outdoor performance.
For New Zealand spa owners, this means significantly lower monthly power bills and the ability to enjoy warm soaking year‑round without worrying about cost blowouts.
Why Heat Pumps Outperform Traditional Spa Heating
Air‑source heat pumps are widely considered the most energy‑efficient way to heat spa water. SpaNet’s PowerSmart range reinforces this, using around 75% less energy than standard electric spa heaters.
This efficiency comes from:
- Extracting renewable heat from the air
- Using minimal electricity for the compressor and fan
- Maintaining stable temperatures with far less energy input
For Moji customers, this translates to faster heat‑up times and lower ongoing costs, especially during winter.
Moji Hot Tubs + SpaNet: A Perfect Match for NZ Conditions
Moji Hot Tubs are designed in New Zealand for New Zealand. When paired with SpaNet heat pumps, they become one of the most cost‑effective spa solutions available.
Benefits of the Moji + SpaNet combination:
- Lower running costs — ideal for daily or year‑round soaking
- Better temperature stability in cold climates
- Reduced carbon footprint thanks to renewable heat extraction
- Quiet operation — perfect for suburban backyards
- Long‑term durability with corrosion‑resistant materials
Whether you choose the Moji Midi Hot Tub with optional heat pump upgrade or Moji Maxi Hot Tub, the SpaNet heat pump upgrade ensures your tub runs efficiently and economically.
The Most Energy‑Efficient Hot Tub Choice
If you’re looking for the most energy‑efficient hot tub in New Zealand, a Moji Hot Tub equipped with a SpaNet heat pump is one of the smartest choices you can make. With industry‑leading efficiency, low running costs, and technology built for Kiwi conditions, it’s a combination that delivers comfort, sustainability, and long‑term savings.