No.
A heat pump hot water system is not the same as solar hot water.
A solar hot water system uses collectors on the roof to heat water directly from the sun. A heat pump uses electricity and pulls heat from the surrounding air to heat the water.
Where people get confused is when a heat pump is paired with rooftop solar PV. In that setup, your solar panels can help power the heat pump during the day, which is a good option, but that still does not make it a solar hot water system.
The simple version is this:
Solar hot water = sun heats the water directly through roof collectors.
Heat pump = electricity runs the system and it pulls warmth from the air.
Solar PV + heat pump = solar can help cover the electricity use, but it is still a heat pump.
If you already have an existing solar hot water setup, that can still be a very good option to replace like for like in some homes. Reece’s view is that Solarhart systems are great units where there is already an existing system needing replacement.
Should I replace my old solar hot water system with a heat pump?
It depends on what you have now, how the home is set up, and whether the existing solar system is worth keeping.
If the current solar hot water system has served you well and the home is already set up for it, replacing like for like can make a lot of sense. If the existing setup is tired, awkward to repair, or parts support is poor, a heat pump may be the better long-term move.
The main thing to look at is not just efficiency on paper. It is:
- how reliable the replacement option is
- what after-sales support is like
- whether it is easy to service later
- whether the price actually stacks up for your household
That is very much how RJT looks at it. Reece’s comments lean heavily on real-world factors like after-sales support, warranty, replacement simplicity, and whether a product is proven, not just whether the brochure says it is efficient.
Are Heat Pump Hot Water Systems worth the higher upfront cost?
In a lot of homes, yes, but not automatically.
A heat pump can be worth the higher upfront cost if you want lower running costs and plan to stay in the property long enough to benefit from that. The mistake people make is assuming every heat pump is a good buy just because it is a heat pump.
They are not all equal.
Some units are cheaper for a reason. Reece is very blunt on that point. He would not recommend some of the cheaper imported options, and his thinking is based on build quality, support, and whether the system is worth the money over time. He speaks more favourably about options like Rheem for practical support and serviceability, while also acknowledging that top-shelf units like Reclaim can be very good but expensive.
So the real answer is this:
A heat pump can be worth it if you buy the right unit.
If you buy purely on sticker price, you can undo a lot of the value.
Will a Heat Pump Hot Water System work with rooftop solar?
Yes, it can work very well with rooftop solar.
A heat pump still runs on electricity, so if you have solar PV on the roof and the system is set up to run during the day, you can use that solar generation to help offset the running cost.
That can be a very practical setup for homeowners who want to reduce power bills.
Just keep the terminology clear. A heat pump working with rooftop solar does not make it solar hot water. It is still a heat pump system that happens to be using solar-generated electricity when available.
That distinction matters because a lot of homeowners are comparing completely different system types without realising it.
Heat Pump vs Electric Hot Water: which is cheaper to run in Australia?
In most cases, a heat pump will be cheaper to run than a standard electric storage hot water system.
That is the big reason many people look at them in the first place.
But cheaper to run does not always mean cheaper overall. You still need to weigh up:
- purchase price
- installation cost
- warranty
- service support
- how long you plan to stay in the home
That is very much in line with RJT’s tone. The recommendation should never be based on hype. It should come back to long-term value, reliability, and whether the system makes sense for that particular property.
Heat Pump vs Gas Hot Water: which is the better choice?
There is no one-size-fits-all answer.
If you have continuous flow gas and you like the convenience of it, moving to a tank-based heat pump changes how hot water is delivered. That can suit some households well, but others may prefer to stay with gas depending on usage patterns and property setup.
The main thing is to match the system to the household.
For some homes, lower running costs with a heat pump make sense. For others, gas may still suit the way the home uses hot water day to day.
That is where proper advice matters, because what works well for a family home is not always what makes sense for a single-person household.
Do Heat Pumps work well in colder weather?
They can, but expectations need to be realistic.
Heat pumps do work in cooler conditions, but climate does affect performance. They are generally better suited when people understand how they operate and do not expect them to behave exactly like every other hot water system.
This is one of those areas where homeowners need practical advice rather than marketing copy. The right question is not “do they work?” It is “how well will this system work in my conditions, with my household demand?”
Will a Heat Pump keep up with a family’s hot water use?
It can, as long as the system is sized properly for the household.
This is where a lot of people go wrong. They compare systems by headline claims without looking at actual occupancy, shower habits, and when the hot water demand happens.
A single person, a couple, and a larger family do not all need the same setup.
The right system comes down to household size, usage pattern, recovery time, and whether the chosen unit is actually suited to the home.
In Conclusion
On paper, a lot of systems can sound good.
The real question is whether the unit is reliable, backed properly, easy to service, and actually suited to your home. That is usually what separates a smart long-term decision from an expensive mistake. We recommend looking at the support available, warranty, serviceability, and whether the system is worth the price, rather than just chasing the cheapest or most hyped option.
If you’re considering a new hot water system, contact RJT for expert advise and installation for all types of hot water systems.
