iStore 270 vs Rheem Ambiheat vs Evoheat 270 – Which Heat Pump Should You Buy in 2024?

Choosing the right heat pump hot water system can feel overwhelming—especially when you're comparing high-performance models like the iStore 270, Rheem Ambiheat 270, and Evoheat 270. All three are designed for efficiency, but each serves a slightly different purpose depending on your budget, climate, and performance expectations.

In this side-by-side breakdown, we help you decide which system is best suited for your home.

Quick Verdict

🥇 Best for Energy Efficiency & Value – iStore 270

Specs:

• 💧 Capacity: 270L

• ⚡ COP: 4.1

• 📍 Installation: Indoor/Outdoor

• 🛠 Warranty: 5 years

Why It Wins:

• Saves up to 70% on energy bills

• High COP = better efficiency and faster payback

• Ideal for households seeking long-term value without overspending

Pros:

✔ Most energy-efficient option in its class
✔ Consistent hot water in most Australian climates
✔ Slimline design with intelligent heating

Cons:

None noted in real-world use

🥈 Best for Cold Climates – Rheem Ambiheat 270

Specs:

• 💧 Capacity: 270L

• ⚡ Energy Savings: 70–75%

• ❄️ Built for Low Temps

• 🛠 Warranty: 7 years (cylinder)

Why It's Ideal for Winter Zones:

• Wrap-around microchannel coil for superior heat transfer

• Works efficiently in temperatures as low as -5°C

• Fast heating times perfect for busy families

Pros:

✔ Built to perform in freezing conditions
✔ Excellent energy savings even during cold spells
✔ Trusted Rheem reliability

Cons:

❌ Higher upfront cost
❌ Not ideal for warmer regions where you won’t need the cold-climate tech

🥉 Most Overpriced – Evoheat 270

Specs:

• 💧 Capacity: 270L

• ⚡ COP: 4.27

• 🔇 Quiet Mode & Vacation Timer

• 🛠 Warranty: Lower coverage than competitors

Why It Falls Short:

While Evoheat claims superior performance, the iStore 270 offers nearly identical specs for significantly less—and both are manufactured with similar core components.

Pros:

✔ Quiet operation
✔ Decent energy savings
✔ User-friendly timer features

Cons:

❌ Steep price with limited added value
❌ Warranty terms don’t justify the premium

Heat Pump Comparison Summary

How to Choose the Right Heat Pump for Your Home

🔹 Energy Efficiency

Look for a COP of 4.0+. The higher the COP, the more heat is generated per unit of electricity.

🔹 Climate Compatibility

• ❄️ Live in a cold zone? Go with the Rheem Ambiheat.

• ☀️ For moderate to warm regions, the iStore 270 is more cost-effective.

🔹 Installation Space

All three units are suitable for outdoor installation, but ensure you’ve got proper clearance and airflow.

🔹 Warranty & Brand Trust

JR Gas & Water backs all units with licensed installation and ongoing support. Choose systems with at least 5 years warranty.

Final Verdict: Which Heat Pump Wins?

Need Help Choosing? JR Gas & Water Has You Covered

🏆 Trusted by Brisbane and Gold Coast locals
🔧 Licensed installers
⚡ Heat pump supply + install packages
💬 Friendly customer service to walk you through your options

Don't pay more than you need to. Let JR Gas & Water help you choose the best heat pump for your home and budget.

Frequently Asked Questions

Which heat pump is best for energy savings?
The iStore 270 leads with a COP of 4.1, saving up to 70% on energy bills.

Is the Evoheat 270 worth it?
Not really—it's similar to the iStore 270 but significantly more expensive, with no added performance benefits.

Do heat pumps work well in winter?
Yes—especially the Rheem Ambiheat 270, which is designed for cold climates.

What’s the average cost to install a heat pump system?
Installations typically range from $700–$1,500 depending on location, access, and if valves need upgrading.

Can I get same-day service with JR Gas & Water?
Yes! We offer same-day service across Brisbane & the Gold Coast for eligible installs.

Want to speak to a specialist or see more options?
Explore all heat pump hot water systems or contact JR Gas & Water for a tailored recommendation today.