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An Ideal Home reviewer tested the Princess Smart 20L dehumidifier for just over a month, including in a bedroom prone to condensation in a period home. The report describes its app and day-to-day controls, but the supplied source excerpt does not include measured humidity results or a final verdict on how much moisture it removed.
Ideal Home reviewer Joanne Lewsley tested the Princess Smart 20L dehumidifier for just over a month in a period home, including a bedroom prone to damp and condensation. The review examines its moisture monitoring, app controls and everyday usability, but the source material provided here does not include numerical test results showing how far humidity fell.
The test took place in a home with thick walls and limited ventilation, conditions the reviewer said make the bedroom susceptible to condensation and occasional mould, particularly in colder months. Lewsley also used the unit in drier parts of the house to compare its use across different rooms. This was a household product test, not a controlled clinical or building study.
To check humidity readings, the reviewer compared the appliance’s display and Princess app with an independent humidity monitor. She also assessed app setup, manual controls, scheduling, tank emptying and filter removal. Noise was measured on both fan settings with a decibel meter, though the supplied excerpt does not report the measured readings from that test.
The listed specifications include a 20-litre-per-day extraction rate, a 3.7-litre water tank and a recommended maximum room size of 20 square metres. The appliance is a compressor model rated at 325 watts; its listed noise range is 39–44 decibels. It has Wi-Fi, a humidity sensor, a timer and a continuous-drain option, with a hose included. The review lists a £230 recommended retail price and availability at B&Q, but prices and stock can change.
What the Bedroom Test Can Tell Buyers
For people dealing with condensation in a bedroom, the review is useful because it evaluates a connected, high-capacity appliance in a lived-in home, rather than relying only on specifications. App access, humidity readings and scheduling may make it easier to operate a unit consistently, while tank capacity and noise can affect whether it is practical for regular use.
However, the source excerpt does not provide the reviewer’s final measured humidity comparisons, the quantity of water collected, or a quantified change in condensation. It therefore supports an account of the testing method and listed features, not a firm conclusion that this model will solve damp in other homes. Persistent damp can have causes beyond indoor humidity, and a dehumidifier’s performance will depend on room conditions and use.
20L smart dehumidifier with Wi-Fi and humidity sensor
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How the Month-Long Test Was Set Up
The reviewer says she used the Princess Smart 20L for just over a month, moving it between a problem bedroom and drier rooms. Her stated aim was to assess both moisture control and convenience, including whether the appliance could be managed without constant manual adjustments.
Setup involved positioning the unit, connecting it to Wi-Fi through the Princess app and adding it to an account. According to the report, the process took a few minutes. The manual recommends leaving about 20 centimetres of clearance around the appliance and keeping it out of direct sunlight. The app works on Android and iOS, and the review says the model also works with Google Assistant.
The unit measures about 57.2 centimetres high, weighs 12 kilograms and has castor wheels. Its 3.7-litre tank needs emptying when full, while the included hose allows continuous drainage where a suitable drain is available. Those details help explain how the test considered not just extraction capacity but the routine work involved in using the appliance.
“I’ve been testing the Princess Smart 20L, available at B&Q for just over a month in my period home, including a bedroom that’s always been a bit of a problem when it comes to damp.”
— Ideal Home reviewer Joanne Lewsley
quiet compressor dehumidifier for bedroom with timer
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Humidity Results Not Included Here
The supplied source material cuts off before the full review’s performance findings and final verdict. It does not state the independent monitor’s readings, how those readings changed during operation, how much water the unit collected, or whether condensation or mould visibly improved. The reviewer says noise was measured, but the excerpt gives only the manufacturer-listed 39–44 decibel range, not the test’s recorded results.
It is also unclear from this excerpt how long the unit ran each day, what humidity target was set, or how room temperature and ventilation affected the observations. Those omissions mean readers should not interpret the account as proof that a 20-litre-per-day rating will be achieved in every home.
dehumidifier with continuous drain hose and large water tank
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Full Review Findings to Check
The next useful information is the remainder of Ideal Home’s review, particularly its measured humidity comparisons, noise readings, water-tank experience and overall verdict. Those findings would clarify whether the reviewer saw a measurable change in the bedroom and how the appliance performed against its stated capacity.
Anyone comparing models can use the listed price and specifications as a starting point, then check current retailer pricing, room-size guidance and operating costs. The review’s month-long test describes one home; results in other buildings may differ with room size, ventilation, temperature and the source of the damp.
digital hygrometer indoor humidity monitor
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Key Questions
What did the Ideal Home reviewer test?
Joanne Lewsley tested the Princess Smart 20L dehumidifier for just over a month in a period home, including a bedroom prone to damp and drier areas of the house.
What is the Princess Smart 20L’s stated extraction rate?
The specifications list an extraction rate of 20 litres per day and a recommended maximum room size of 20 square metres. The rate is a product specification, not a measured result reported in the supplied excerpt.
Can the dehumidifier be controlled remotely?
According to the review, its app can show room humidity and let users turn the unit on or off, change fan speed, set humidity levels and create schedules or timers. The report also says it works with Google Assistant.
Did the test prove the dehumidifier reduced damp?
The excerpt describes the testing process but does not include numerical before-and-after humidity readings or a quantified change in condensation. The full performance result cannot be established from the material provided.
How does the unit drain collected water?
It has a 3.7-litre tank that must be emptied when full, or users can attach the included hose for continuous drainage where appropriate.
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