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Astralpool / Hurlcon HX 120 Gas Spa Heaters - HX120

$3,382.00 $4,090.00
Tax included Shipping calculated at checkout.



Hurlcon HX120 / Astralpool HX120 gas pool and spa heaters kept physically in stock. Replaces all older MiniMax and HX 120 series spa heaters. Our most popular heater, with a Tried & Proven Design that has changed very little in 25+ years. This heater was developed from the Hendy Boiler. Replaces the MX 125, MX 150 and HiNRG 175. 

  • Physically kept in stock in our warehouse and on display in our shop.
  • Authorised Astralpool dealers cannot advertise price online.
  • Contact us for pricing & availability.
  • We carry more gas heater spare parts than anyone.

About the Hurlcon / Astralpool HX 120 Spa Gas Heater:

Gas heating is the fastest and most economical way to heat your pool and spa. The HX & WX gas pool and spa heater is the most low cost solution available in two sizes to meet your heating requirements. Made in Australia with electronic touch controls the HX & WX heater is ideal for your heating requirements.

The HX120 has a heating output of around 25kW and can raise 1000L of water 20°C in approximately 1 hour. Some spas heat faster, and some slower.

Fits in exactly the same footprint and plumbing as older, HX120 gas heaters, WX heaters, and most MiniMax / MM 120 heaters by Purex Hurlcon.

This is also the perfect heater for Spa & Swim Spa Gas conversions.

Features & Benefits:

  • Less Maintenance and improved efficiency
  • Electronic touch controls
  • Available in Natural Gas and LPG models
  • Heat on demand
  • Electronic ignition
  • Made in Australia
  • Suitable for indoor and outdoor installations
  • HX 120 Equivalent to a 24kW electric heater!

Time to Heat Water by 20°C (in a perfect world):

  • 1000L = ~65min
  • 1500L = ~78min
  • 2000l = ~95 min
  • 2500l = ~110min


  • Height: 820mm
  • Width: 390mm 
  • Depth: 515mm
  • Weight: 25kg
  • Water Flow: 150-400lpm. Anything over 300lpm should have a bypass valve assembly fitted.
  • mJ Input: 103mJ

Recommended Retail Pricing:

Care of your HX gas heater:

  • HX heaters can last many years. We regularly service HX heaters made in the 1990s
  • By far, the most important thing is Water Balance. Corrosion from low-pH & High Bromine / Chlorine is the biggest killer of gas heaters. The water can look Crystal Clear & Perfect, while it's eating away at at the Copper heat exchanger fittings. Bromine, Trichlor Tablets, and Dichlor powders lower water pH.

More Information & Downloads:

Payment & Security

Payment methods

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information. Major Credit Cards, PayPal, ApplePay, GooglePay accepted.

  • Identifying Parts

    Before making a phone call, the fastest way to identify parts is to send photos of the Front, Back, Sides along with any Measurements.

    Use the Contact Us form to upload from a Phone, Tablet or Computer.

  • Technical Support

    For Technical Queries, please use the Contact Form. Please include as much information as possible.

    We also have a range of manuals available.

    Electrical & gas work must be performed by a licensed & experienced person.

  • Heater and Spa Parts - Australia's Biggest & Fastest Shipper of Spa Parts & Pool Heaters

    About Us

    100% Australian Owned & Operated. A real, physical store, with shipping from Vic, NSW, Qld, & WA.

    We carry more stock of spa parts & pool heaters and ship faster than anyone!

    Ex-employees of the biggest manufacturers and distributors, so we know what we're talking about!