Rheem vs Everhot vs Vulcan vs Aquamax: Best Storage Gas Hot Water System Compared

If you're shopping for a reliable gas hot water system, chances are you've come across the Rheem 491 Series, Everhot 291 Series, Vulcan 661 Series, and Aquamax 991 Series. But which one offers the best balance of performance, price, and long-term value?

Let’s dive into a side-by-side comparison of these four popular models—all manufactured by Rheem—so you can confidently choose the right fit for your home.

🔥 Energy Efficiency – All Even on Performance

All four models deliver comparable energy efficiency, meaning you won’t see a major difference on your gas bill regardless of which one you choose.

Efficiency Verdict: ✅ All tied – No clear winner here.

💧 Capacity & Water Supply – Ideal for Aussie Families

Each system comes in a range of sizes suitable for 1–6 people, making them ideal for a variety of household needs.

Options:

• Rheem 491 Series – From 90L to 170L

• Everhot 291 Series – Similar capacity range

• Vulcan 661 Series – Up to 170L

• Aquamax 991 Series – Up to 170L

Capacity Verdict: ✅ All tied – All offer family-friendly hot water supply.

🛠 Installation & Compatibility – Rheem, Everhot & Aquamax Make It Easy

Thanks to shared design specs and universal connections, Rheem, Everhot, and Aquamax systems are retrofit-ready and simple to install.

Installation Verdict: 🏆 Rheem / Everhot / Aquamax – Fast installs and less plumbing hassle.

🔉 Noise, Temperature & Smart Features – All Smooth Operators

• Quiet operation across the board

• Consistent water temperature

• Basic yet effective system controls

Smart Controls Verdict: ✅ All tied – Reliable, consistent, and user-friendly.

🔧 Durability & Maintenance – Tough Tanks All Round

All systems feature enamel-lined tanks, protective anodes, and proven parts. Maintenance is simple, and parts are widely available across Australia.

Durability Verdict: ✅ All tied – Built to last under Aussie conditions.

⚡ Renewable Energy Compatibility – Solar Ready

All four systems are compatible with solar boosting or future solar integration.

Renewable Verdict: ✅ All tied – Future-proof for eco-minded households.

💸 Price – Vulcan Leads on Budget

When it comes to affordability, Vulcan 661 is the best bang-for-buck option.

Price Verdict: 🏆 Vulcan – Great value for those watching their budget.

🎯 User Experience – Simple, Reliable & Effective

All four systems are plug-and-play, low-fuss, and deliver consistent hot water. No app integration or fancy screens—just straightforward functionality.

UX Verdict: ✅ All tied – Set-and-forget systems homeowners love.

🛡 Warranty & Aftersales Support – Rheem Pulls Ahead

While all four are backed by Rheem’s national support network, the Rheem 491 Series wins with the longest warranty, offering more peace of mind.

Warranty Verdict: 🏆 Rheem 491 – Strongest long-term coverage.

🎨 Design & Aesthetics – Sleek & Subtle

• Rheem & Everhot – Light grey

• Vulcan – Charcoal grey

• Aquamax – Modern stainless steel-style casing

Design Verdict: 🏆 Subjective – All are neat, modern, and blend well outdoors.

🏁 Final Verdict – Which Gas Storage System Wins?

✅ Best Overall → Rheem 491 Series
✅ Best Budget Choice → Vulcan 661 Series
✅ Best Retrofit Option → Aquamax 991 Series
✅ Best Entry-Level All-Rounder → Everhot 291 Series

💧 Get Professional Installation from Brisbane’s Best

At JR Gas & Water, we supply and install all four of these systems with fast turnaround, licensed workmanship, and award-winning service. Serving Brisbane, Gold Coast & surrounds.

🔧 Book your install today and enjoy reliable hot water all year round.