Heat Pump Hot Water Systems (Rheem) | Homes + Commercial | Jousto
Heat Pump Hot Water • Homes + Commercial

Hot water that costs less — and works smarter with solar

Heat pumps are one of the highest-impact upgrades you can make — whether you’re a homeowner with solar, or a business where hot water runs all day and night. Jousto supplies and installs Rheem heat pump hot water systems, and can add Jousto EMS scheduling when you already have solar or a battery.

Best fit for: solar homes, gas-to-electric upgrades, community housing, hotels/motels/resorts, butchers, dairies and other large hot water users.
Get instant quote Commercial use cases Heat pump vs electric tank

Questions? SMS/Call 0489 261 333 • [email protected]

Jousto heat pump hot water hero
Video explainer

Heat pumps, solar timing & smart control (in plain English)

Why heat pumps reduce running costs, why element size matters, and how Jousto can optimise timing for homes and commercial sites.

Why heat pumps win

Same hot water — much less electricity

A heat pump doesn’t “create” heat like a standard electric element. It moves heat from the air into your tank (like a reverse air-conditioner). That’s why it can deliver the same hot water with a fraction of the energy.

  • Lower running cost compared to old electric storage.
  • Excellent with solar: easier to heat during the day and use at night.
  • Great electrification step if you’re reducing reliance on gas.
Simple idea: hot water is energy storage in a form you use every day. Heat it when energy is cheaper (or solar is abundant), then use it later.
Gas to heat pump upgrade
If you’re buying solar + a battery and still heating water with gas, a heat pump is often the next upgrade that makes the system “complete”.
A common question

Heat pump vs “just schedule a standard electric tank”

Jousto EMS can schedule loads — but the hardware still matters. Many standard electric tanks use a 3.6kW element, which is a large, blunt load. If your solar export is only 1–2kW, the element can force grid imports even while the sun is shining.

Electric tank versus heat pump comparison
Standard electric elements tend to “spike” (often 3.6kW). Heat pumps draw lower power over a longer window — easier to run on solar.

What this means in the real world

  • Standard tank + big element: simple, but can import from grid even midday.
  • Heat pump: steadier demand, better solar match, typically lower ongoing cost.
  • Jousto EMS: adds smart timing rules once you have the right building blocks.
Rule of thumb: If your goal is lower ongoing hot water cost, heat pumps usually win. EMS helps you optimise timing — it doesn’t change the physics of a large element.
Solar reality

The solar export mismatch problem

Many solar homes export energy in smaller bands — especially in the morning, afternoon, or on cloudy days. A big element may not “fit” that export band.

Heat pumps are easier to align to solar because they draw less power over more time — which means more of your hot water can be made from your own solar.

Solar export mismatch diagram
When a load needs more than your export, the grid fills the gap. Lower, steadier loads make solar self-consumption easier.
Commercial focus

Designed for large hot water users

In commercial environments, hot water is often a major operating cost — and a reliability requirement. Jousto works across community housing, hotels/motels/resorts, and high-use sites like butchers and dairies, where timing, recovery and system design matter.

Commercial hot water users montage
Commercial strategy is about reliability + timing: deliver hot water when needed, and reduce exposure to expensive windows.

Typical commercial outcomes

  • Reduce electricity cost by shifting heating to better windows.
  • Lower gas usage (or use gas only as backup/top-up).
  • Better control of recovery times and operating consistency.
  • Visibility and accountability over time (monitoring + reporting).
Commercial note: We treat hot water like a system — not a box swap. Correct sizing + controls matter.
Commercial strategy

Heat pump pre-heat + gas booster (hybrid)

For some commercial sites, the best approach is hybrid: use a heat pump to do the bulk of the heating — then let gas only “top up” when demand spikes.

  • Reliability stays high for peak demand periods.
  • Gas use drops because it runs less often and for shorter periods.
  • Solar synergy improves by pre-heating during daylight hours.
Heat pump pre-heat with gas booster diagram
Hybrid setups can be ideal for high-demand sites: heat pump does the heavy lifting, gas provides top-up resilience.
EMS smart scheduling dashboard
Jousto EMS can schedule hot water to run in the windows that actually matter — especially when you already have solar or a battery.
Where Jousto EMS fits

Smart timing when you already have solar or batteries

If you already have solar, a battery, or you’re a large hot water user, Jousto EMS can help align hot water heating to the best windows — based on your site and tariff structure.

Important: Jousto EMS is added when relevant (e.g. existing solar/battery, complex usage, commercial timing needs). It’s not sold as a standalone product at this stage.
Get instant quote Learn about Jousto EMS
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Get your instant heat pump quote

Answer a quick survey to get a tailored estimate. If you proceed, we’ll verify site photos to finalise a formal quote. For commercial sites, we can scope larger hot water systems and hybrid setups.

Commercial? If your site has high demand or multiple tanks, call/SMS 0489 261 333 or email [email protected] for a quick scoping conversation.

Note: Final suitability depends on site conditions, plumbing access, electrical capacity, and compliance requirements. We confirm this during verification/scoping.

Want hot water costs under control?

Start with an instant quote. If you’re a large user or commercial site, we’ll help design the right pathway — heat pump only, EMS timing, or hybrid pre-heat + gas boost.

Get instant quote Call 0489 261 333 Email [email protected]