Frequently Asked Questions

You can’t manage what you don’t measure.

You need uHoo to help protect your family and/or your employees from the harmful particles in the air. uHoo does that by detecting the air quality in a room at any given time and providing you with minute-by-minute data in real time about the levels of toxins, chemicals, and other particles in the air. With this data, you’ll be able to take immediate actions to improve the air and keep it safe and healthy.

It’s especially helpful to parents who have young children in the house and for people with conditions like asthma, rhinitis (hay fever), and allergies. Allergens and toxins in the air you breathe can trigger an asthma or allergic attacks. With uHoo, you would know what is in the air you breathe. Knowing what you’re breathing in enables you to fight these ailments and become healthier.

Yes, you can travel with it! uHoo is small and lightweight, almost the same size as a Starbucks venti cup, making it easy to carry with you wherever you go. It weighs only 265 grams and is only 6.5 inches tall and 3.4 inches in diameter.

Other air detectors on the market tend to focus on only a select few air quality indicators. uHoo’s technology is the most advanced, with nine dedicated sensors built in to an aesthetically beautiful product that is around the size of a Starbucks venti cup.

uHoo is an air sensor and not an air filter. It provides you with the data you need to make specific changes in your habits that contribute to unhealthy air. For instance, when buying a new cleaning product or a new furniture, you’ll be able to know if it contributes to indoor air pollution in your home or office. uHoo does this by alerting you when the air quality reaches unhealthy levels. It also automatically provides recommendations of what you can do in that moment to get better air quality. Having an air filter / purfiier is great, but you won’t actually know whether it is effective or not unless you have a way to measure it. Having uHoo allows you to understand the air you breathe and help you identify the factors that contribute to unhealthy air, leading to a more long-term and effective solution.

uHoo will tell you which pollutants are causing your air quality to drop based on the nine parameters that it detects. Once which parameter has been determined, it would be easier to determine the possible reason.

You have the option of leaving uHoo in one room or you can bring it to another room. We recommend placing uHoo in the area of your home where most people spend their time in because that’s what matters.

Alternatively, if you want to constantly monitor multiple rooms, you can also get a uHoo for every room and you’d be able to have an air quality dashboard of your home, which you would be able to see on the uHoo app.

Please note that the design of your home also affects the air flow. Doors, walls and partitions restrict the flow of air, thus the air in one room will be different from another. The air on one floor in your home would probably be different from another level.

Absolutely! We made sure it is safe for everyone in the family from babies to children and even pets. However, like any other appliances in the house, we recommend adults install and use uHoo to ensure safety.

We’d love to help out with any questions you have. Please send an email to Our Suppor Team will be happy to assist you! They will respond to your inquiries as soon as possible.

The package includes the uHoo monitor, a micro-USB cable, and a power adapter.

You can click here to proceed to the buy page Buy Now!

Yes, we ship to anywhere in the world.

We ship from Hong Kong.

It’s free shipping.

Yes. You can enter your credit card details after you’ve selected the number of units you want to buy. You can click here to proceed to the buy page.

Yes. You can enter your PayPal details after you’ve selected the number of units you want to buy. You can click here to proceed to the buy page.

We ship your uHoo unit the next business day. The amount of time it will take to deliver to your address would vary based on your country. It normally takes 5 to 11 business days on average. Once the courier picks up your order from our warehouse, you will receive an email with your tracking number so you can track it.

We would need your complete address in order to ship you your uHoo.

Yes. We process shipment the next business day. Once the courier picks your order up from our warehouse, you will get the tracking number in your email. Please check the spam folder, just in case it goes in there.

Please visit our Partners page here to see who the local resellers in your country are.

We offer seasonal promotions from time to time. Make sure to like us on Facebook, Twitter, and Instagram and subscribe to our newsletter, so you get updates about exclusive offers.

uHoo has a one-year limited warranty. You can view our warranty policy here. Please feel free to contact our Support Team for further questions at

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uHoo has nine sensors: Temperature, Humidity, Carbon Dioxide (CO2), Carbon Monoxide (CO), Dust (PM2.5), Volatile Organic Compounds, Nitrogen Dioxide, Ozone and Air Pressure.

Yes, you need a Wi-Fi connection. The uHoo monitor works with the uHoo cloud to allow you to monitor your home remotely.

5 Volts.

Yes, uHoo is powered via micro-USB and would need to be plugged in to power for it to turn on.

uHoo does not have a battery. It requires power for it to turn on. You can plug uHoo into a portable power bank as uHoo is powered via micro-USB. This would make your uHoo portable. You would just need a live WiFi connection. If the location you’re in does not have a WiFi connection, you can connect uHoo to your mobile phone’s WiFi hotspot instead. You can read more about how to do that on this blog post.

Yes, you can bring uHoo around. It is powered via micro-USB so you can plug it into a power bank to power it on. If the location you’re in does not have a WiFi connection, you can connect uHoo to your mobile phone’s WiFi hotspot instead. You can read more about how to do that on this blog post.

The lights on uHoo indicate the state it is in. You can refer to this document on what each color means.

No, uHoo is not waterproof.

uHoo is designed to be used indoors. It will still be fine to use it outdoors and it will work but please make sure to keep it protected from the elements. If the monitor is damaged due to outdoor use, the warranty will be voided. Please also take note that there would be larger variations in data because outdoor air has larger variability compared to indoor air.

Yes, the VOC sensor can detect formaldehyde. It will show you via the VOC reading but will not distinguish it from other types of VOCs. When formaldehyde is present, the VOC readings will rise.

uHoo can detect various types of tVOC categories. These inlude a-Pinene, D-Limonene, Acetaldeyhyde, Acetone, Hexanal, nDecane, Tolouene, Formaldehyde, and Benzene.

Once you setup uHoo, the volatile organic compound (VOC), Nitrogen Dioxide (NO2), and Ozone (O3) sensors would need a 24-hour warm up period while the carbon dioxide (CO2) sensor would need 48 hours.

During the warm up period, please keep uHoo plugged in and connected to the network continuously to complete the process. If interrupted (powered off or electricity fluctuation), the warm up will restart from the beginning the next time it is powered on and connected. The warm up only needs to be conducted during first time use.

All the other sensors do not have any warm-up period and can be referred to within 2 minutes of uHoo being connected.

Sensors naturally drift over time. To address this, uHoo has auto-calibration technology in its sensors. Auto-calibration addresses the long term stability of the sensors and cross-sensitivity across sensors. Auto-calibration happens every 168 hours (7 days) of continuous use.

It will take at most three cycles of auto-calibration for CO2 sensors to achieve the accuracy that it is designed to have. Sometimes, the designed accuracy would already be achieved after one auto-calibration cycle and there are times right after the warm up period. It entirely depends on how long uHoo has been kept in storage and also the courier’s handling during shipment.

uHoo’s auto-calibration technology is not dependent on the environment that the device is placed. What this means is you don’t have to expose the device to fresh air for the auto-calirbation to be effective in recalibrating it back to the fresh air baseline. uHoo’s auto-calibration technology already has the fresh air baseline embedded into the device during production. When the device auto-calibrates, it uses the baseline stored in the device’s memory as the basis for auto-calirbation. This ensures that the air quality readings are consistent and always based on proper baselines.

No. All your data is stored in the cloud.

Yes. It is available on both the Apple Store and Play Store.

Yes, uHoo works on the iPad as well. Please adjust the filter of your iPad App Store to include iPhone apps. Once the filter is adjusted, you would see the uHoo app when you search for it.

uHoo comes with a free app, which is available for both iOS and Android devices. Once you’ve setup uHoo, you would be able to see your air data on the mobile app.

You will get a real-time notification from the app when the air quality is above normal and safe levels. You can also see it on the app’s dashboard at any time. When all nine sensors are green, it means that the air quality is within safe levels and you have nothing to worry about. When it turns yellow, it means that the air quality is above normal levels and you need to be cautious. When it turns red, it is considered unsafe and unhealthy and you must take immediate action to bring it to normal levels.

Green means that the air quality is in the ideal range. You’re doing a great job in keeping the air quality in your home safe and clean. You basically have nothing to worry about!

Yellow means that the air quality is slightly lower or higher than the ideal range. You don’t have to be alarmed, but it would be great if you could take action to prevent it from turning red.

Red means that the air quality is unsafe and unhealthy. You need to take immediate action.

Yes, you can as long as your uHoo monitor is turned on and connected to your home WiFi network.

The uHoo app would be able to tell exactly which air parameter is unhealthy so you can narrow down what the causes could be. The app would also give you alerts and ideas on what the possible cause is together with possible solutions. The app can only tell you the possible reasons, based on what uHoo detects. To determine what the exact source is, you would still need to conduct your own investigation.

Yes, your historical data is recorded and you would be able to see charts on how your air has changed over time. You can view it by minute, in hourly averages and daily maximum and minimum.

The lines indicate the lowest and highest readings for that day. The space between those two charts is where your air quality stood during that particular day.

Yes, the app will give you some possible solutions to fix your air depending on what uHoo has detected.

uHoo requires an 802.11 b/g/n @ 2.4 Ghz WiFi. uHoo supports both open and encrypted (WPA and WPA2) wireless connections. WiFi networks configured within an enterprise or office network that requires certificates are not supported.

If your WiFi network is a captive portal, such as those used in malls, airports, and some offices, you would only be able to connect to them if they place your uHoo’s MAC address (written on the bottom of the device), into their unrestricted list of devices.

You also need to ensure that firewalls are not blocking outbound connections. This is rare in a home network. However, an enterprise network may place restrictions on certain ports and IP addresses. You would need to work with the company’s IT team to allow access to uHoo’s cloud.

Yes, you need a Wi-Fi connection. The uHoo monitor works with the uHoo cloud to allow you to monitor your home remotely.

You would need to reset the device in order to clear the WiFi network stored in its memory.

Just get a paper clip and power off your uHoo device. When you power it back on, please press the button on the back of the uHoo device using the paper clip for 4 to 5 seconds or until the light turns into a solid blue light. This process needs to be completed before the device connects to your existing WiFi network. If it connects before the process completed, you would need to repeat the process. Alternatively, you can reset the uHoo device in a location where the WiFi network that it is currently connected to is not available.

Once the device already has a solid blue light, please unplug the device and plug it back in. When you plug it back in and it is a solid blue light, you can start the setup process. If it is not a solid blue light, please repeat the reset process.

Resetting the uHoo device will not delete your data. It will just clear the WiFi network stored inside the uHoo device and bring it back to setup mode.

If you have firewall restrictions on your router, please remove restrictions on http and https to uHoo’s cloud and also open ports 80 and 8466.

Volatile organic compounds (VOCs) are gases emitted by different types of solids and liquids. It is often found in household products such as paints, cosmetics, and cleaning products. These products emit VOCs when in use and even when they are stored.

Some VOCs have short- and long-term health effects, especially in young children. Long-term exposure of some VOCs such as benzene and formaldehyde have been linked to cancer. Exposure to VOCs may cause headache, irritation, and fatigue.

Particulate matter (PM2.5) refers to particulate matter found in the air with a diameter less than 2.5 micrometers. These include combustible materials, organic compounds, metals, and other small materials that are emitted into the air, usually from power plants, motor vehicles, and burning wood. They are also referred to as fine particles, and they can stay in the air for long periods of time due to their lightness.

These particles are so small and light, they can stay in the air longer than other larger particles, which increase the likelihood of humans and other animals inhaling them into their bodies. Their small size means that they can bypass the body’s defenses in the nose and throat, and reach the lungs and even the bloodstream.

PM2.5 has been linked to heart and lung disease, and they can also trigger or worsen chronic conditions like asthma and bronchitis. In the worst case scenario, long term exposure to high levels of PM2.5 can lead to the particles getting into the bloodstream, where they build up as plaque and lead to heart attack or stroke.

Carbon dioxide (CO2) is a naturally-occurring atmospheric gas, and comprises less than 1% of the gases in the atmosphere. While it isn’t a classic air pollutant, carbon dioxide levels in a room can rise making it difficult to breathe, especially when there are more people breathing the same air in a confined space.

Higher levels of CO2 cause temperature and water vapor levels to rise, which can affect lung function. Higher levels of CO2 also displaces oxygen in the atmosphere, making it harder to breathe. This results in headaches, drowsiness, disorientation, fatigue, and difficulty in making decisions.

Carbon monoxide (CO) is a colorless, tasteless and odorless gas and is considered a toxic air pollutant. It is found in small amounts in the air, but can increase due to different human activities. Vehicle emissions are the largest source of human-related CO today. While carbon monoxide will not cause problems in most people at low concentrations, higher levels have a drastic effect and can be lethal.

Carbon monoxide can react with other air pollutants to create ground-level ozone, which is another dangerous air pollutant. Breathing in high levels of CO reduces the efficiency of oxygen transport in the blood, leading to various problems like headaches, reduced reaction time, blurred vision, nausea and weakness.

Nitrogen dioxide (NO2) is a highly-reactive gas in the oxide group. It has a foul odor and is formed naturally through lightning, and the interaction between plants, soil and water. Vehicle emissions and other fossil fuel combustion contribute to higher levels of NO2 in the air, and can cause difficulty in breathing for humans, and it is one of the main contributors to photochemical smog.

Breathing increased levels of nitrogen dioxide results in respiratory problems including coughing, wheezing, and can trigger or contribute to the development of chronic conditions like asthma and bronchitis.

Ozone (O3) refers to a gas made of three atoms of oxygen. When found in the upper atmosphere it has a beneficial effect: shielding the earth from the sun’s harmful ultraviolet rays. At ground level, however, ozone is a dangerous air pollutant and can be harmful even in very small quantities. It is considered to be one of the most dangerous air pollutants.

Ground level ozone is the main ingredient in smog, and breathing in even small amounts can cause chest pain, coughing, and irritation in the throat and respiratory tract. It can trigger and worsen asthma, bronchitis, emphysema, and it can cause lung damage.

Enterprise account users have access to APIs.

Yes, you can integrate uHoo with your HVAC system via the uHoo APIs.

Yes, once you have a uHoo enterprise account, you would be able to access the web dashboard. You can preview it on the Business page of the uHoo website here.

With the uHoo enterprise account, you can have an unlimited number of uHoo devices associated with your account.

Yes. uHoo is designed to help property owners, facilities managers or HR heads make better decisions when it comes to air quality.

Yes. uHoo for Business is designed for multiple users. There is no limit as to how many users you can add when sharing the data.

The system also provides you with a user creation and access management tool. This allows you to assign different uHoo devices / locations to different individuals and restrict access to only the locations assigned to them.

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