Big Tank or Fast Chill? Choosing Between TRULIVA's Two Countertop Purifiers

Both of TRULIVA's countertop RO units share the same footprint, the same six-layer filtration removing 104 contaminants at 99.9%, the same hot water range from 38 to 98°C, and the same plug-in-and-pour setup — no plumbing connection, no installer, no landlord conversation. If you have already settled on countertop, you face one real choice: the CR-Z7170 with its 6.8-litre reservoir and electric cooling to 10°C, or the CR-ZX5170 with compressor cooling to a genuine 5°C and an integrated ice maker that produces cubes within seven minutes.

The right answer comes down to two things: how many glasses you pour in one sitting, and how cold you actually need them.

What they share — and why that matters

Before the differences, it is worth being clear on what is the same. Both units:

• Run full six-layer reverse osmosis. No minerals or heavy metals slip through either; the filtration standard is identical.
• Top-fill from a separate water source — PDAM tap, a galon refill, or borehole supply drawn into a jug. Neither connects to a pipe.
• Deliver hot water across a 38–98°C adjustable range, so the same machine that makes kopi susu works for baby formula and cup noodles.
• Sit at 450 × 250 × 426 mm. Physically, they are the same appliance with different internal hardware.
• Carry a 4,000-litre total filtered capacity. Cartridge life is equivalent.

A reader choosing between the two does not need to think about filtration quality. Both are the same. The decision is about cold water and throughput.

The CR-Z7170: built for households that pour in volume

The CR-Z7170's defining feature is its 6.8-litre internal tank.

Six-point-eight litres is enough to fill roughly nine standard 750 ml glasses without stopping. For a household that hosts — a Lebaran open house, a weekend where relatives descend, an arisan gathering — that number matters. With a smaller tank or a tankless countertop unit, you feel the pause: you pour a glass, the machine refills and chills, the next guest waits. A 6.8-litre reservoir absorbs a busy pouring session without anyone noticing.

The cooling mechanism is electric — thermoelectric rather than a compressor. The water reaches 10°C. That is meaningfully cooler than a galon left at room temperature in a 30°C kitchen, and it covers everyday drinking comfortably. What it does not do is match a refrigerator.

Ten degrees is a real practical floor: clear of room temperature, noticeably refreshing. But if your household refrigerates its drinking water out of habit, 10°C will feel like a step down. That is not a flaw in the design — it is an honest consequence of the thermoelectric method, which runs quieter and lighter than a compressor but cannot reach the same depth of chill.

The CR-Z7170 is also the quieter machine. There is no compressor cycling on and off, so the ambient sound level is lower. In a study or a room where quiet matters, that becomes a practical consideration.

In short: the CR-Z7170 is built for throughput. Its 6.8 L tank handles back-to-back pours without a pause; its electric cooling keeps water noticeably cool; and its lower noise output suits a room where a compressor hum would be noticed.

The CR-ZX5170: built for households that prioritise cold

The CR-ZX5170 uses a compressor — the same refrigeration principle as a household fridge. Its chilled output is 5°C. That five-degree difference from the CR-Z7170's 10°C is more significant than it looks on paper.

In tropical heat, 5°C is the difference between water that feels refreshing and water that feels genuinely cold. It is fridge-temperature on demand, without opening the fridge. For households accustomed to keeping a chilled water bottle in the refrigerator, the CR-ZX5170 replicates that cold — directly from the dispenser.

The second function is the ice maker.

Ice in Indonesian homes typically comes from one of two sources: freezer trays filled with unfiltered tap water, or bags of ice bought from a warung or minimarket. Both routes skip filtration entirely. The CR-ZX5170 makes ice from the same RO-purified water it dispenses for drinking — and the first batch is ready within seven minutes. For households that ice their drinks as a matter of course, this closes the loop: filtered water to drink, filtered ice to cool it.

The compressor does add a low-level hum while maintaining temperature. It cycles on and off, so it is not continuous, but in a quiet room it is audible. This is standard for any refrigeration-cycle appliance — the same sound a small fridge makes.

On tank capacity, the CR-ZX5170 does not publish a separate tank figure in the same way. The design trades the large warm-water reservoir for the compressor and ice-making hardware. For households drawing occasional glasses and iced drinks, this is not a problem. For a table of ten guests all wanting a glass within two minutes, the CR-Z7170's 6.8-litre tank has the edge.

In short: the CR-ZX5170 is built for cold. Compressor cooling reaches a genuine 5°C; the integrated ice maker produces purified ice within seven minutes; and the whole unit needs no plumbing, just a worktop and a power point.

Temperatures side by side

Both machines handle the same Indonesian household temperature use cases — the difference is at the cold end.

For a detailed look at which temperature setting suits kopi, teh, baby formula, and instant noodles, the temperature guide for Indonesian households maps each use case to a specific range — both the CR-Z7170 and CR-ZX5170 cover it.

The Indonesia context: hosting versus heat

The two scenarios where each unit pulls ahead are recognisably Indonesian.

The hosting household. Lebaran open house means a steady stream of guests across an afternoon. Weekend family visits fill the living room with relatives. An arisan gathering pours glass after glass. In these situations, the CR-Z7170's 6.8-litre tank absorbs the demand without a pause. The electric cooling keeps water noticeably cooler than room temperature. The quiet operation sits comfortably in a full living room without adding to the background noise.

The household that prizes cold. In Jakarta's heat — where the ambient temperature in a non-air-conditioned room can sit at 30°C or above through much of the year — room-temperature filtered water is less appealing than it sounds. A household that refrigerates its drinking water as a habit, or that reaches for ice as a matter of course, will find the CR-ZX5170's 5°C output and purified ice a closer match to the daily reality.

Both units suit renters and residents in kost, apartment, or kontrak arrangements where a plumber cannot touch the supply line. For a full explanation of how the top-fill tank system works and what "no plumbing" means in practice, the countertop RO no-plumbing explainer covers the mechanics.

Honest limitations

Neither unit is limitless. A few things worth knowing before you buy:

The CR-Z7170 produces water at 10°C — noticeably cooler than a warm room, but not fridge-cold. Households accustomed to 4–6°C refrigerated water will feel the difference. There is no ice function.

The CR-ZX5170 has a compressor hum. In a quiet bedroom or study, that will be noticed. The ice maker is not an industrial output — it covers household ice needs rather than a party scale. And without a large published warm-water reservoir, heavy consecutive pouring in volume (several guests at once) works better on the CR-Z7170.

Both units top-fill from a separate water source. If your household draws more than the reservoir holds between refills, the discipline of keeping the input tank full falls on whoever does it. Neither connects to a pipe, which is the point — but it also means neither auto-refills.

Choose this if…

Choose the CR-Z7170 if your priority is back-to-back pouring — Lebaran guests, a full rumah, a small office where several people fill glasses from the same unit — and 10°C cold water is enough for daily drinking. Quieter operation is a bonus.

Choose the CR-ZX5170 if genuinely cold water (5°C) and purified ice matter to your household. The compressor cooling and ice maker make it the right pick for heat-sensitive households, or any household that currently buys bagged ice or keeps a separate ice tray filled with tap water.

For the broader decision about whether a countertop purifier suits your situation versus an under-sink model, the under-sink vs countertop vs wall-mounted guide covers form-factor trade-offs in full. And for the full hot-and-cold category overview including the under-sink UR-S61096H with instant hot, see the hot and cold water purifiers guide.