Astralpool HX 120 Gas Spa Heater - HX120 - aka Hurlcon - ~24kW Output

AstralPool HX120 Gas Spa Heater with ~24 kW Heat Output.

Available in Natural Gas or LPG (Propane).

The AstralPool HX120 (previously the Hurlcon HX120) is Australia’s most popular replacement gas spa heater. Built for reliability and performance, it’s the trusted choice for replacing older spa heaters such as the Hurlcon HX 120 Beige, HX 150, MiniMax, MX125, MX150, HiNRG175, and Raypak Spartan 131. Proudly designed and manufactured in Australia, the HX120 has been proven for over 25 years and remains the benchmark for fast, efficient spa heating.

• Physically stocked in-store at 10 Industry Blvd, Carrum Downs, VIC.
• Enquire via the button or contact us here.
• We are an Authorised Fluidra (Astralpool / Zodiac) Dealer and Warranty Agent and offer Full Warranty protection.
• We carry more heater spare parts than anyone! 
  

Fast, Efficient Heating for Spas, Swimspas, and Small Pools

Gas heating remains the quickest and most dependable way to heat spas. The HX120 delivers up to 25kW of output from about 110 MJ/h gas input. It can raise 1000 L of water by 20°C in about an hour under ideal conditions — perfect for on-demand spa use.

Its copper-nickel finned-tube heat exchanger, electronic ignition, and digital touch controls provide durability and precision. The HX120 installs easily as a drop-in replacement for older Hurlcon HX/WX, Wilton or MiniMax units.

Key Features & Benefits

• Australian-made for local conditions
• Fast heat-up – ideal for spas used occasionally
• High-efficiency copper-nickel exchanger
• Digital controller with diagnostic display
• Natural Gas or LPG (Propane) compatible
• Electronic ignition – no standing pilot flame
• Compact and lightweight (~33 kg)
• Outdoor-rated; indoor conversion kits available
• Similar heating output to ~24 kW electric or ~35 kW heat pump (in cold weather)
• Designed for longevity with minimal maintenance

Typical Heating Times – Raise Water by 20 °C*

• 1000 L ≈ 65 min
• 1500 L ≈ 78 min
• 2000 L ≈ 95 min
• 2500 L ≈ 110 min

*Actual times depend on various conditions.

Technical Specifications

• Model: HX120 (Natural Gas or LPG)
• Heat Output: ~25 kW
• Gas Input: ~110 MJ/h
• Gas Use: ≈ 2–2.2 kg LPG / h | ≈ 2.6–3 m³ Nat Gas / h
• Efficiency: Up to 83 %
• Flow Rate: 150–300 L/min (bypass required above 300 L/min)
• Size: 820 mm H × 390 mm W × 515 mm D
• Weight: ~33 kg
• Gas Connection: 20 mm (½ ") BSP

Maintenance & Care

• HX heaters often last decades with proper care — many 1990s units still operate today.
• Maintain pH 7.2–7.6 and avoid low pH or high bromine/chlorine.
• Ensure good water flow and ventilation for efficiency and longevity.

Downloads & Resources

• HX Series Brochure (PDF)
• Installation & Operation Manual
• HX/WX Spare Parts List
• Optional Remote Controller

Heater & Spa Parts is Australia’s largest authorised dealer for AstralPool and Hurlcon HX series heaters. We hold real units in stock for immediate pickup and supply to qualified installers nationwide. Our team also stocks the widest range of HX and WX spare parts — heat exchangers, touchpads, controllers, and more — all genuine and compliant with Australian standards.

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