We recommended having at least one monitor in each of the main living and sleeping quarters.

TIP! Get the lüft home bundle (Kit of 5) and monitor your entire house at once from the mobile app!

lüft will display your Indoor Air Quality status. Green means OK, all is well! Yellow means that at least one of the 6 sensors is at or beyond its Warning threshold. Red means at least one of the 6 sensors is at or beyond its Alert threshold. If you've also enabled the nightlight function, the device will show blue during the night. Advanced users can change all threshold values and color definitions as well as brightness, i.e. choose a different color or brightness of your choice for each state (OK, warning, alert, nightlight) and adjust thresholds for each individual sensor to meet your needs.

Yes. lüft has been certified by Intertek to be compliant with UL and CSA safety standards 61010-1. During that certification process, the device went through rigorous safety testing performed by an independent, certified laboratory. In addition, Intertek audits our manufacturing facility quarterly to maintain that certification. The device was also tested by an independent, certified laboratory to be compliant with Proposition 65, officially known as the Safe Drinking Water and Toxic Enforcement Act of 1986.

lüft does not require calibration. There are also no internal batteries and no other serviceable parts.

The latest version of the lüft app also provides an outside Air Quality Index or AQI. The AQI is a measure of how clean or polluted the outside air is. AQI values range from 1 to 5 with 1 being good and 5 being very poor air quality.

The latest version of the lüft app includes a Mold Risk Indicator. The app analyzes the CURRENT conditions of temperature and humidity and determines how likely that mold may develop. The mold risk is provided on a 5-level scale from very low to very high risk. Very low risk means it would take more than a year the prevailing conditions to develop mold, if any. Very high risk means it may take no more than three days for surface mold to develop.

Please note: lüft does not measure mold but gives an indication of the risk of developing mold. Also, other surfaces in the house, like windows and outside walls, may start to show mold even at lower risk levels. This is due to the
fact that the local temperature and humidity index on that particular window or
wall can be significantly different from measurements taken in open air. 

lüft allows you to download all historical data in csv format. Open the trend chart and select the duration you would like to download. Then press the download button in the left lower corner of device tile.

lüft can be connected to any 2.4GHz WiFi network. Any common "Dual Band" home WiFi router or hub supports both 2.4GHz and 5GHz. Most routers manage the assignment of 2.4GHz or 5GHz automatically and you simply connect to the available network provided by your router. Some routers do provide two networks with 2 different names where one of them is often marked  "5G". In this case, select the network that does not have the "5G" in the name. If you are not sure, please
refer to the label on the
base of your router or the manual for further guidance

Yes, lüft has a UL compliant, auto-ranging power supply rated for 120-430V and 50-60Hz.

Caution for EU based users please note: At this time the device is only certified to be used for 120V, 60Hz applications, i.e. any common US standard wall outlets.

lüft will start up again as soon as power is restored. The monitor saves all settings and data for up to 4 years on the device. Upon power up it will reconnect to your WiFi network, restore all custom settings and continue to measure your Indoor Air Quality as before. After a power interruption, the first hourly data reading may be delayed by up to 90 minutes. However, ad-hoc readings can be retrieved at any time before that.

TIP! Enable the power outage notifications, make sure lüft is setup for WiFi and it will notify you about any extended power outage based on your power outage frequency settings. To configure that feature navigate to settings >> notifications >> power outages.

When adding a new device to your account the device uses default warning and alert thresholds. When opening Settings >> Thresholds >> Select Sensor the default thresholds are automatically displayed.

To reset your device, press the blue button on the side of the monitor until the LED starts blinking and then release the button. The reset will remove all sensor and user specific data from the device and return all settings to their default values. If you would like to reconnect to the device, please, be sure to remove that device from your phone's Bluetooth list prior to re-connecting again.

Tip! If you were set up for WiFi and added the device back to the same account, lüft will download all your historical data from the cloud backup to your mobile app for a seamless transition. Voila!

Unlike our radon, temperature, humidity and pressure sensors which measure absolute values, the sensor measuring VOCs and CO2 equivalents is a relative sensor. It measures changes in levels with very high precision but does not report absolute levels. The built-in logic performs periodic self-levelling to compensate for any long term sensor drift or sensor aging. This enables these types of sensors to measure very small changes in VOC levels which are measured in parts per billion. The latter is essential to detect deterioration in air quality. Most, if not all, VOC sensors in consumer Indoor Air Quality devices work based on the same principle. Please contact your local Indoor Air Professional for any further information.

You can securely share each individual monitor's data by entering the e-mail of your trusted radon or indoor air professional under "share data" in the individual device menu. Once enabled, your trusted professional can review and monitor your data in real time but has no access to your monitor, your mobile app, or your phone, i.e. it's an at-will data sharing only feature. Data sharing allows for remote monitoring of your air quality by that and only that professional 24/7.

TIP! Enable data sharing for vacation homes or any property you don't live in all year! This ensures all is well all year and may save you from catastrophes like frozen water pipes!

The Temperature Offset function lets you adjust the temperature calibration by up to +/- 5F. This is useful if you like to synchronize multiple lüft monitor readings or match the readings of your HVAC system. All temperature sensors, including HVAC thermostats, lüft monitors or any other indoor device, can only measure the temperature of their immediate surroundings. Temperatures in rooms vary based on airflow, ventilation, position in the room relative to heaters and HVAC outlets, and other factors. Because temperature and relative humidity are not independent of each other, an adjustment of the temperature offset in a lüft monitor will also adjust the relative humidity accordingly.

The Altitude Correction automatically adjusts the measured atmospheric pressure to sea level. This allows the comparison to the atmospheric pressure commonly reported by your local weather stations (Radio, TV, or Internet). You can disable this feature in Settings>>Thresholds>>Air Pressure.