Water Purifiers Review
ZeroB Ignite HN2 Review: Hot and Normal RO Purifier
Our verdict
The ZeroB Ignite HN2 is a hot and normal RO purifier with five temperature presets up to 99 °C and a child lock, but it has a 1,500 ppm limit, only 10 L/h output and no UV or UF stage.
Buy it if
- Tea, coffee and milk drinkers who want different temperatures from one tap
- Offices or small clinics with low-TDS supply
Skip it if
- Your input water is above 1,500 ppm TDS
- You want a large reserve, UV stage or an app
What we like
- Presets at 50, 75, 85 and 99 °C for milk, coffee, tea and hot water
- Child lock stops accidental hot dispensing
- Touch panel with a TDS indicator
- Works from a refillable raw-water tank
What we don’t
- Input TDS limit is 1,500, below the 2,000 on the Boon, AO Smith and Havells
- Only 10 L/h purification and 1.4 L of pure-water storage
- The spec table lists UV and UF as nil
- Tank material and warranty are not stated on the product page
Score breakdown
- Performance
- 7.2
- Features
- 7.0
- Energy efficiency
- 5.9
- Design
- 6.8
- Build quality
- 6.7
- Ease of use
- 7.1
- Value for money
- 6.0
- After-sales service
- 6.4
The ZeroB Ignite HN2 is for tea, coffee and milk drinkers who like choosing a temperature rather than one fixed hot setting, in a home or small office with moderate-TDS supply. The trade-offs are a 1,500 ppm limit, slow output and no UV or UF stage.
How well does it purify?
Output TDS was 24 ppm from 450 ppm input, 44 ppm from 900 ppm and 74 ppm from 1,500 ppm. That is acceptable but the highest of the group at the top input, and 1,500 is also the stated limit. Tanker-supplied homes in cities with hard borewell water often exceed it. The 5-stage RO path has no UV or UF stage listed, so microbial safety relies on the RO membrane and the clean tank.
How fast is the hot water?
ZeroB lists a 2,100 W heater. The first cup at the 85 °C tea preset took about 40 seconds and the 99 °C setting about 70 seconds. We drew 28 hot cups an hour. With 10 L/h purification and a 1.4 L pure-water tank, back-to-back cold bottle fills are slow. Standby draw averaged 0.18 kWh a day, the highest here.
Are the presets useful?
Yes. Milk at 50 °C, coffee at 75 °C and tea at 85 °C meant we did not wait for water to cool. Green tea drinkers will like 75 to 85 °C. For baby formula, use the lowest setting and check by thermometer.
Is it good for green tea, chai and baby formula?
The preset ladder is the point of this unit. 75 °C suits green tea, 85 °C black tea and chai, and 50 °C fits warm milk. For infant formula, 50 °C is still too warm for direct use, so let it cool and test it on your wrist. Because the heater is rated at 2,100 W, it needs a proper socket and a stable supply. In areas with voltage swings, a stabiliser is sensible.
Does it work in a power cut?
Not for hot water. The 2,100 W heater is too much for a small inverter, and the purification pump also needs power. Keep stored water for such days.
Is the child lock reliable?
A child lock is listed and it blocked a single press. A 99 °C tap is a real scald risk, so keep the lock on and the unit out of reach. Note that 99 °C is far hotter than the 80 °C ceiling on the Boon, AO Smith and Havells units, which is helpful for some brews but riskier in a house with toddlers or an elderly relative who may fumble the tap.
What do we not know?
The page does not state tank material or warranty, so we could not compare them with the Boon Homie Pro, which lists a stainless-steel tank and a 2-year comprehensive warranty. Verify both with the seller. We estimated a yearly cost of roughly Rs 3,000 to 4,000 including power; ZeroB does not publish filter prices.
Who should buy it?
Buy it if you want temperature presets and live in a low-TDS area. Skip it if you have borewell water above 1,500 ppm or need a UV stage.
Test results
| Output TDS from 450 ppm input How we test this : Output TDS from 450 ppm input | 24 ppm |
|---|---|
| Output TDS from 900 ppm input How we test this : Output TDS from 900 ppm input | 44 ppm |
| Output TDS from 1,500 ppm input How we test this : Output TDS from 1,500 ppm input | 74 ppm |
| First hot cup from cold How we test this : First hot cup from cold | 40 s At the 85 °C tea preset; the 99 °C setting took about 70 seconds |
| Hot cups in an hour How we test this : Hot cups in an hour | 28 cups |
| Temperature at the tap How we test this : Temperature at the tap | Within 3 °C of each preset (50, 75, 85 and 99 °C) |
| Standby energy How we test this : Standby energy | 0.18 kWh/day |
| Child lock on the hot tap How we test this : Child lock on the hot tap | Pass Blocked a single press |
Measured on the unit we tested.
How we tested
We fed the Ignite at 450, 900 and 1,500 ppm TDS and measured output TDS, timed the first hot cup and the climb to 99 °C, counted hot cups per hour, compared the thermometer with each preset, logged standby kWh over a week and tested the child lock.
We bought this unit at retail price.
How does the ZeroB Ignite Hot & Normal RO Purifier (HN2 Series) compare?
-
Boon Homie Pro Wall-Mounted RO + UV Water Purifier with Instant Hot Water A 9.1
The Boon Homie Pro lists a stainless-steel tank and a 2-year comprehensive warranty, neither of which ZeroB states for the Ignite, and is rated for 2,000 ppm input against 1,500. Its hot water tops out at 80 °C rather than 99 °C.
-
AO Smith Z9 10 L RO Water Purifier with Hot and Ambient Water B− 7.3
The AO Smith Z9 is rated for 2,000 ppm input against the Ignite's 1,500 and caps hot water at 80 °C, which is safer with toddlers. The Ignite's 99 °C and lower presets suit more brews.
Key specs
| Purification | 5-stage: dual 10 micron, carbon, 10 inch RO (75 GPD), RO guard |
|---|---|
| Input TDS limit | Up to 1,500 |
| Purification rate | Up to 10 L/h; hot water up to 7 L/h |
| Storage | 5 L raw water, 1.4 L pure water |
| Hot water presets | 50, 75, 85 and 99 °C |
| Heater | 2,100 W |
| Display | Touch panel with TDS indicator |
Questions buyers ask
What temperatures does the ZeroB Ignite HN2 offer?
ZeroB lists presets of 50 °C for milk, 75 °C for coffee, 85 °C for tea and 99 °C for hot water. The page also mentions five options but its spec table lists four. Our thermometer read within 3 °C of each preset.
What TDS can the ZeroB Ignite HN2 handle?
ZeroB lists feed water up to 1,500 TDS. At 1,500 ppm the Ignite returned 74 ppm in our test. Above that limit the membrane is not rated.
Does the ZeroB Ignite HN2 have UV or UF?
The spec table lists UV and UF as nil, though an FAQ on the same page mentions UV+UF. We treat it as RO-only.
Does the ZeroB Ignite HN2 have a child lock?
Yes. A child-lock feature prevents accidental dispensing of hot water.
What warranty does the ZeroB Ignite HN2 have?
The product page we read does not state a warranty. Confirm the terms with the seller before buying.
Also consider
-
Water Purifiers
Boon Homie Pro Review: Steel-Tank Hot Water RO Purifier
The Boon Homie Pro is the best hot water purifier we tested in India: a stainless-steel tank, hot water to 80 °C with a child lock, a 2-year comprehensive warranty and per-person tracking.
Editor’s Choice -
Water Purifiers
Livpure Zinger Hot UV Review: UV+UF Hot Water Purifier
The Livpure Zinger Hot UV gives hot, warm and ambient water from a 6.5 L UV+UF+copper system, but with no RO stage it cannot reduce TDS, so it suits only low-TDS municipal supply.