APOLLON, HYPERION, AELIOS or SOLFOS?
All four are Nobel solar water heaters. They differ in system architecture, not in a simple better-to-worse ranking. What decides the choice is scale of use and the type of property — a home or a project — which is what the comparison below sets out.
Every figure and specification in the table comes from each model's approved specification. A dash means the approved specification does not state that value for that model — not that the model lacks it. We do not fill a cell with an estimate.
Your household capacity is deliberately not in the table. It is not determined by the model but by occupants, draw-off points and usage pattern, which is exactly what the Smart Advisor asks about.
| Specification | NOBEL APOLLON | NOBEL HYPERION | NOBEL AELIOS | NOBEL SOLFOS |
|---|---|---|---|---|
| Positioning | Top tier — villas and premium use | The balanced choice — reliability and efficiency | The value choice — with Nobel build quality | For projects — not for ordinary domestic use |
| Available capacities | 200 and 330 L | 200 and 300 L | 200, 300 and 500 L | 200 and 300 L |
| Household size | 200 L: 4-5 people · 330 L: 6-8 people | |||
| Warranty | 5 years on the tank · 10 years on the collectors (replacement, not repair) | |||
| System architecture | Double Jacket | APOLLON collector with AELIOS tank | Closed-loop Double Jacket | |
| Approved capacity | 330 L hot water + 26 L heating fluid | 200 L and 300 L | ||
| Tank | Enamelled | Enamelled | ||
| Heat exchanger | Jacket | Surrounding the tank | ||
| Additional protection | Magnesium protection | Service flange | ||
| Operating pressure | Up to 15 bar | |||
| Certification | Solar Keymark | |||
| Intended use | Projects, hotels and large facilities |
A dash (—) means the approved specification for that model does not state this value — not that the model lacks it. Anything not shown here is confirmed during the site visit.
Still comparing solar, heat pump and gas boiler? Start here →
Which one?
- NOBEL APOLLON
The only model whose approved specification states an actual capacity, an operating pressure and Solar Keymark certification — the most fully documented of the four.
- NOBEL HYPERION
Pairs the APOLLON collector with the AELIOS tank and adds magnesium protection — a combination drawing on both.
- NOBEL AELIOS
Closed-loop with an enamelled tank and a surrounding exchanger, plus a service flange, so the tank can be reached without dismantling the system.
- NOBEL SOLFOS
Intended for projects, hotels and large facilities, available in 200 L and 300 L.
Questions about this comparison
Why are some cells empty?
Because we show approved specifications only. If a model's approved specification does not state an operating pressure, for example, we leave the cell empty rather than supply a figure of our own. That is not a shortcoming in the product; it is a commitment to stating only what we can source.
Which model is "best"?
None is best in the abstract. SOLFOS is intended for projects and large facilities; the others serve residential use with different system architectures. The best one is whichever suits your property and consumption, which the site visit settles.
What capacity does my home need?
That is not answered by a model comparison. Capacity follows from occupants, draw-off points and how hot water is actually used. The Smart Advisor asks about your home and recommends a size.
What does Double Jacket mean?
A closed-loop system: the water you wash with never enters the collector circuit. A separate heating fluid carries heat across an exchanger, which protects the tank and collector from scale and minerals in the supply water.
Are there other solar models?
Yes — forced-circulation central solar systems are available from 160 L up to 3000 L for large facilities, alongside economy options. This comparison covers the four Nobel models most used in homes and projects.
Still deciding? Let the recommendation come to you
The Smart Advisor asks about your home — occupants, draw-off points, property type — and recommends a model and capacity, at no cost or commitment.