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

AstralPool HX120 / HX 120 Gas Spa Heater with ~24 kW Heat Output
(Equal to a 35 kW Heat Pump in cool weather)

The AstralPool HX120, previously known as the Hurlcon HX120 or HX 120, is one of Australia’s most well-known replacement gas spa heaters. Designed and manufactured in Australia, it has been a proven choice for more than 25 years for fast, dependable heating of spas, swim spas, and smaller pools.

It is commonly used as a replacement for older models such as the Hurlcon HX 120 Beige and also supersedes the Hurlcon HX 150, along with replacing heaters such as the MiniMax, MX125, MX150, HiNRG175, and Raypak Spartan 131.

We keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.

Why Choose Gas Heating?

Gas is the fastest way to heat a spa. The HX120 delivers around 24 kW of heat output from about 110 MJ/h gas input, making it ideal for people who want strong, on-demand heating without waiting around.

In cool weather, this heater is roughly equivalent to a 35 kW heat pump. That is why gas heaters like the HX120 remain such a popular choice for spas and swim spas where rapid heat-up matters.

Under ideal conditions, it can raise 1000 litres of water by 20°C in about an hour. Its copper-nickel finned-tube heat exchanger, electronic ignition, and digital controls make it a durable and practical replacement for many older Hurlcon HX/WX, Wilton, and MiniMax heaters.

Why Buy From Us?

• We physically stock these heaters in Australia
• We sell more of these heaters than anyone else in Australia
• We carry the complete range of HX and WX spare parts in stock
• We are an Authorised Fluidra (AstralPool / Zodiac) Dealer and Warranty Agent
• We support these heaters long after the sale with genuine spare parts and real product knowledge

Key Features

• Australian-made for local conditions
• Fast heat-up for spas, swim spas, and smaller pools
• Copper-nickel heat exchanger for durability
• Digital controller with diagnostic display
• Electronic ignition with no standing pilot flame
• Compact design at approximately 33 kg
• Outdoor-rated, with indoor conversion kits available
• Widely used as a replacement for older Australian spa heaters
• Comparable to around a 35 kW heat pump in cool weather

Possible Heating Times to Raise Water by 20°C

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

Actual times depend on ambient temperature, wind, plumbing layout, heat loss, water condition, and other site factors.

Technical Specifications

• Model: HX120 / HX 120
• Fuel Types: Natural Gas or LPG
• Heat Output: ~24 kW
• Gas Input: ~110 MJ/h
• Gas Use: ≈ 2–2.2 kg LPG / h or ≈ 2.6–3 m³ Natural 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

• Many HX heaters last for decades when properly maintained
• Maintain pH between 7.2 and 7.6
• Avoid poor water chemistry, including low pH and excessive sanitiser levels
• Avoid bromine tablets - these can lower pH and corrode copper heat exchanger
• Ensure correct water flow and adequate ventilation

Heater & Spa Parts physically stocks AstralPool HX120 / HX 120 heaters in Australia, sells more of them than anyone else, and carries the complete range of HX and WX spare parts in stock.

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