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Air Source Heat Pumps for Hot Tubs & Swim Spas

Air source heat pumps transform the way you heat your hot tub or swim spa by extracting thermal energy from ambient air. With our R32-powered systems, you’ll experience energy savings of up to 70% on your hot tub running costs, all without requiring additional electrical work. These efficient heating solutions operate reliably in sub-zero temperatures, ensuring year-round comfort while reducing your carbon footprint.

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How Air Source Heat Pumps Work

Air source heat pumps use innovative technology to transfer heat from the outside air to your hot tub or swim spa. Unlike traditional electric heaters, these systems don’t generate heat—they move it from one place to another, making them remarkably energy-efficient.

The Heating Process Explained

  1. Ambient Air Collection - The unit draws in outdoor air across special evaporator coils containing R32 refrigerant
  2. Heat Extraction - As air flows over the coils, the refrigerant absorbs heat energy and vaporizes
  3. Compression & Amplification - The compressor raises the gas pressure, significantly increasing its temperature
  4. Heat Transfer - The titanium heat exchanger transfers this heat directly to your spa’s water circuit
  5. Cycle Continuation - The refrigerant condenses back to liquid form, and the process repeats

Energy Efficiency Benefits

Our heat pumps deliver outstanding energy performance, producing multiple units of heat energy compared to the electricity they consume. This exceptional efficiency translates to:

  • Substantial reduction in operating costs compared to standard electric heaters
  • Lower environmental impact through reduced electricity consumption
  • Consistent heating performance even in colder temperatures

Choosing the Right Heat Pump for Your Spa

When selecting an air source heat pump, several factors determine which model will best meet your needs:

Sizing Considerations

The appropriate heat pump capacity depends primarily on your spa’s water volume:

  • Hot Tubs - Our H2O HydroPro and H2O Gecko models provide ideal heating for standard hot tubs
  • Swim Spas - Larger water bodies require more powerful units like the H2O HPH13 with higher capacity

Winter Performance

All Heracles Wellness heat pumps utilize R32 refrigerant technology, maintaining efficient operation at temperatures well below freezing. This advanced refrigerant:

  • Ensures reliable performance year-round
  • Functions effectively during frost conditions
  • Maintains heating capacity even in challenging weather

Installation Requirements

Getting your heat pump up and running is straightforward:

  • No complex electrical work needed
  • Requires only minor plumbing modifications
  • Outdoor placement with adequate airflow clearance

By investing in a quality air source heat pump from our collection, you’ll enjoy continuous comfort while significantly reducing your hot tub’s running costs and environmental impact.




Frequently Asked Questions

Can an air source heat pump be installed on any existing hot tub?
Yes, our heat pumps can be retrofitted to most hot tubs with minor plumbing adjustments, and no additional electrical work is required.
How much space is needed to install a heat pump?
For optimal airflow, you'll need approximately 1-2 square meters of well-ventilated outdoor space with clearance around all sides.
Will a heat pump work effectively during winter months?
Absolutely—our R32-powered heat pumps operate efficiently at temperatures well below 0°C, ensuring year-round performance.
How noisy are hot tub heat pumps when operating?
Our heat pumps run quietly, with noise levels comparable to those of a standard household refrigerator, allowing for peaceful outdoor relaxation.
Can I control my heat pump remotely?
With smart connectivity built in, you can monitor and adjust your settings right from your phone or tablet—anytime, anywhere.

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