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Comparing AstralPool Gas Pool Heaters: IXI vs ICI vs HiNRG vs Viron eVo vs MX
If you're planning to install, upgrade, or replace a gas pool heater in Australia, chances are you’ve encountered models from AstralPool — one of the most trusted brands in pool and spa equipment. Over the years, AstralPool has released several popular heater lines, including the MX, HiNRG, Viron eVo, ICI, and the latest IXI range.
This guide compares the features, specifications, performance, and ideal applications of each model so you can choose the best solution for your pool heating needs.
Pool Heater Compare Overview
| Feature / Model | IXI | ICI | HiNRG | Viron eVo | MX |
|---|---|---|---|---|---|
| Years Active | Current | Current | Discontinued | Discontinued | Discontinued |
| Models | 200, 370 | 200, 400 | 175, 250, 400 | 250–550 | 150–400 |
| Efficiency | 83% | 83% | 83% | Up to 97% | ~83% |
| Footprint | Ultra-compact | Compact | Medium | Large | Medium |
| Heat Output | Up to 127 kW | Up to 100 kW | Up to 90 kW | Up to 127 kW | Up to 95 kW |
| Modulating Burner | Yes | Yes | No | Yes | No |
| Automation Ready | Yes | Yes | No | Limited | No |
| VersaFlo Compatible | Yes | No | No | No | No |
| Indoor Use | Yes (flued) | Yes (flued) | Yes (flued) | Yes (flued) | Outdoor only |
| Best For | Smart installs | Mid-large pools | Basic retrofits | Large pools | Replacements |
AstralPool IXI – Small Size, Big Performance
The IXI 200 and IXI 370 models feature a compact footprint, 83% efficiency, and automation compatibility. They’re ideal for residential installations where space is limited, or when retrofitting from older units. The rotatable flue and plug-and-play automation connection make the IXI range a favourite for modern backyards.
AstralPool ICI – Mid-Size, Modulating, and Durable
The ICI 200 and 400 offer high capacity, automation readiness, and a cupronickel heat exchanger — giving it an edge in harsh water chemistry conditions. Its full-modulation burner maintains consistent water temperature, and it integrates with Viron Connect systems for smart control.
AstralPool HiNRG – Proven Reliability (Now Discontinued)
The HiNRG 175, 250, and 400 models are no longer in production, but they're still found in thousands of Australian homes. Known for simple, rugged reliability and fast heat-up, HiNRG units lacked advanced controls but delivered strong heating at a competitive price point.
AstralPool Viron eVo – High Efficiency, Heavy-Duty Output
The discontinued Viron eVo series was Astral’s most energy-efficient gas heater, offering up to 97% thermal efficiency and full modulation. Available in four models (250 to 550), it was ideal for large pools, spas, and high-use environments like resorts or heated lap pools.
AstralPool MX – Proven Legacy Heating (Discontinued)
The MX range (MX150–MX400) was widely installed in Australian pools. Though basic (no modulation or automation), it offered dependable heat and solid weatherproof construction.
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Fixed-rate burner
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Max gas input 380 MJ/hr
- Ideal for like-for-like replacements with IXI or ICI
Choosing the Right AstralPool Heater
- For small spaces or automation setups → Choose the IXI
- For large residential pools needing high output → Go for the ICI 400
- Replacing an older HiNRG? → Consider the IXI 370 or ICI 200
- Need ultra-efficiency or fast heating for big pools? → Look into a modern replacement for the Viron eVo
Still Not Sure? Let HeaterFix Help
We offer:
- Advice on selecting the right gas heater
- Replacement for older HiNRG or Viron models
- Expert installation of IXI & ICI systems
- Automation upgrades with Viron Connect & VersaFlo
Call 0451 658 880 or Get a Quote Today
WA, NSW, VIC, QLD, SA, NT, ACT & TAS
Frequently Asked Questions about AstralPool Gas Heaters
What is the difference between the AstralPool IXI and ICI heaters?
The IXI is smaller, lighter, and more compact, designed for space-limited installs. The ICI offers more power and includes a cupronickel heat exchanger for better corrosion resistance in harsh water conditions.
Can I replace my HiNRG or Viron eVo heater with the IXI or ICI?
Yes. The IXI and ICI are compatible replacements for older models. Our team can advise on the correct size and handle the full installation, including plumbing and gas certification.
Which AstralPool gas heater is best for energy efficiency?
The Viron eVo was the most efficient (up to 97%), but it has been discontinued. Among current models, the IXI and ICI offer 83% efficiency with modulation technology to reduce gas usage.
What is VersaFlo, and why is it useful?
VersaFlo is an add-on that allows the heater to bypass water when not heating. This reduces wear on the heat exchanger and saves pump energy—especially useful with automation systems like Viron Connect.
How do I know which size gas heater I need?
The size depends on your pool volume, heating expectations, and how quickly you want the pool to reach temperature. Contact HeaterFix for a free heater sizing recommendation.
