{"id":46239,"date":"2026-08-24T07:15:01","date_gmt":"2026-08-24T07:15:01","guid":{"rendered":"https:\/\/proair.ee\/toode\/ghost-u-100-active-local-heat-recovery-unit\/"},"modified":"2026-08-25T06:52:13","modified_gmt":"2026-08-25T06:52:13","slug":"ghost-u-100-active-local-heat-recovery-unit","status":"publish","type":"product","link":"https:\/\/proair.ee\/en\/toode\/ghost-u-100-active-local-heat-recovery-unit\/","title":{"rendered":"ghost-u-100-active-local-heat-recovery-unit"},"content":{"rendered":"<h2 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"1yh5jot\" data-start=\"390\" data-end=\"457\">O.ERRE GHOST-U 100 ACTIVE local recuperator \u00d8100 mm \u2013 30 m\u00b3\/h<\/h2>\n<p data-start=\"459\" data-end=\"666\"><strong data-start=\"459\" data-end=\"488\">O.ERRE GHOST-U 100 ACTIVE<\/strong> is a compact <strong data-start=\"502\" data-end=\"569\">local heat recovery ventilation unit, or recuperator<\/strong> , which allows you to improve the air exchange in a room without building a central ventilation duct.<\/p>\n<p data-start=\"668\" data-end=\"898\">The device is installed through an external wall <strong data-start=\"709\" data-end=\"727\">in an opening of only \u00d8100 mm<\/strong> , which makes the GHOST-U 100 ACTIVE particularly suitable for apartments, private houses and buildings undergoing renovation, where it is difficult to make a ventilation opening with a larger diameter.<\/p>\n<p data-start=\"900\" data-end=\"1122\">The maximum air flow is <strong data-start=\"923\" data-end=\"934\">30 m\u00b3\/h<\/strong> . The ACTIVE version allows multiple GHOST-U units to be wired and synchronized to form a complete local ventilation system.<\/p>\n<p><iframe loading=\"lazy\" title=\"Ghost-U: Decentralized Heat Recovery Unit to Prevent Home Mold\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/O3nE2BJZ2ck?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h3 data-section-id=\"mt1kqb\" data-start=\"1124\" data-end=\"1158\">Why choose GHOST-U 100 ACTIVE?<\/h3>\n<p data-start=\"1160\" data-end=\"1368\">One of the major advantages of the GHOST-U 100 ACTIVE is its <strong data-start=\"1211\" data-end=\"1241\">small \u00d8100 mm installation opening<\/strong>. This makes the unit suitable for locations where installing a standard \u00d8160 mm local heat recovery unit is not possible or advisable.<\/p>\n<p data-start=\"1370\" data-end=\"1390\">This device is suitable for, for example:<\/p>\n<ul data-start=\"1392\" data-end=\"1591\">\n<li data-section-id=\"1b1ddce\" data-start=\"1392\" data-end=\"1407\">bedroom;<\/li>\n<li data-section-id=\"pe1wa7\" data-start=\"1408\" data-end=\"1419\">the living room;<\/li>\n<li data-section-id=\"qq1x6p\" data-start=\"1420\" data-end=\"1450\">the study and home office;<\/li>\n<li data-section-id=\"1h5nmsq\" data-start=\"1451\" data-end=\"1464\">an apartment;<\/li>\n<li data-section-id=\"18y61iw\" data-start=\"1465\" data-end=\"1476\">a single-family home;<\/li>\n<li data-section-id=\"2vscx5\" data-start=\"1477\" data-end=\"1505\">a building undergoing renovation;<\/li>\n<li data-section-id=\"1a9bh8q\" data-start=\"1506\" data-end=\"1547\">a room without proper ventilation;<\/li>\n<li data-section-id=\"39zu4h\" data-start=\"1548\" data-end=\"1591\">rooms with humidity and CO\u2082 problems.<\/li>\n<\/ul>\n<p data-start=\"1593\" data-end=\"1776\">According to the manufacturer, GHOST-U is designed for use in various living spaces, and multiple units can be synchronized to create a comprehensive ventilation solution.<\/p>\n<h3 data-section-id=\"1tf9jvt\" data-start=\"1778\" data-end=\"1821\">Local ventilation with heat recovery<\/h3>\n<p data-start=\"1823\" data-end=\"2036\">GHOST-U operates with an alternating airflow. The purpose of the device is to remove contaminated air from the room and replace it with fresh outdoor air, using the thermal energy of the exhaust air to improve the temperature of the incoming air.<\/p>\n<p data-start=\"2038\" data-end=\"2104\">This helps reduce the heat loss associated with conventional ventilation.<\/p>\n<p data-start=\"2106\" data-end=\"2267\">A local heat recovery unit is therefore a good solution in situations where <strong data-start=\"2179\" data-end=\"2266\">continuous, controlled air exchange is desired without installing a ventilation duct system throughout the entire building<\/strong>.<\/p>\n<h3 data-section-id=\"b52y1d\" data-start=\"2269\" data-end=\"2290\">Only a \u00d8100 mm opening<\/h3>\n<p data-start=\"2292\" data-end=\"2397\">The GHOST-U 100 ACTIVE requires <strong data-start=\"2332\" data-end=\"2358\">a 100 mm diameter opening<\/strong> for installation.<\/p>\n<p data-start=\"2399\" data-end=\"2615\">This is a significant advantage during renovation. A smaller opening generally means an easier installation through the exterior wall and allows for the use of local heat-recovery ventilation even in places where larger units do not fit well.<\/p>\n<h3 data-section-id=\"okoxas\" data-start=\"2617\" data-end=\"2640\">Airflow up to 30 m\u00b3\/h<\/h3>\n<p data-start=\"2642\" data-end=\"2766\">The GHOST-U 100 ACTIVE has a maximum airflow of <strong data-start=\"2684\" data-end=\"2695\">30 m\u00b3\/h<\/strong> for both supply and exhaust.<\/p>\n<p data-start=\"2768\" data-end=\"2872\">Therefore, the \u00d8100 model is particularly suitable for local ventilation in small and medium-sized rooms.<\/p>\n<p data-start=\"2874\" data-end=\"3024\">If you need a higher air exchange rate, consider the <strong data-start=\"2924\" data-end=\"2939\">GHOST-U 160<\/strong> model, which has a maximum airflow of 60 m\u00b3\/h.<\/p>\n<h3 data-section-id=\"1fss1lj\" data-start=\"3026\" data-end=\"3063\">ACTIVE \u2013 multiple devices working together<\/h3>\n<p data-start=\"3065\" data-end=\"3129\">The GHOST-U 100 ACTIVE is primarily intended for use in a system.<\/p>\n<p data-start=\"3131\" data-end=\"3326\">Devices in the ACTIVE version are connected to each other <strong data-start=\"3177\" data-end=\"3189\">via a cable<\/strong> and can be used in a master\/slave configuration. Up to <strong data-start=\"3274\" data-end=\"3287\">16 devices<\/strong> can be connected to the system.<\/p>\n<p data-start=\"3328\" data-end=\"3453\">This allows, for example, one device to be installed in the bedroom and another in the living room, with the devices operating in a coordinated manner.<\/p>\n<p data-start=\"3455\" data-end=\"3514\">This is a key difference compared to the GHOST-U BASE version.<\/p>\n<h3 data-section-id=\"1veg5q3\" data-start=\"3516\" data-end=\"3559\">Integrated humidity and twilight sensors<\/h3>\n<p data-start=\"3561\" data-end=\"3706\">The ACTIVE version includes <strong data-start=\"3586\" data-end=\"3617\">humidity and twilight sensors<\/strong>, which enable the use of automatic operating modes.<\/p>\n<p data-start=\"3708\" data-end=\"3849\">The humidity sensor helps the ventilation system respond to changing conditions in the room, and the twilight sensor can be used to control quieter nighttime operation.<\/p>\n<p data-start=\"3851\" data-end=\"3975\">The unit has four adjustable ventilation speeds, including a special night mode.<\/p>\n<h3 data-section-id=\"1jumb8i\" data-start=\"3977\" data-end=\"4005\">Energy-efficient DC motor<\/h3>\n<p data-start=\"4007\" data-end=\"4184\">The GHOST-U uses <strong data-start=\"4066\" data-end=\"4081\">a brushless, electronically commutated DC motor<\/strong> designed for low energy consumption and a long service life.<\/p>\n<p data-start=\"4186\" data-end=\"4278\">This is important because ventilation systems typically operate for a large part of the day or around the clock.<\/p>\n<h3 data-section-id=\"1138oip\" data-start=\"4280\" data-end=\"4297\">Low noise level<\/h3>\n<p data-start=\"4299\" data-end=\"4369\">The GHOST-U 100 ACTIVE is also designed for use in living and sleeping areas.<\/p>\n<p data-start=\"4371\" data-end=\"4542\">On the manufacturer\u2019s current English-language website, the maximum noise level for the GHOST-U 100 ACTIVE is listed as <strong data-start=\"4471\" data-end=\"4501\">27 dB(A) at a distance of 3 meters<\/strong>.<\/p>\n<h3 data-start=\"4371\" data-end=\"4542\">For example,<a href=\"https:\/\/proair.ee\/en\/toode\/top-of-the-line-blauberg-vento-inhome-mini-w-25-m%c2%b3-h-wi-fi-heat-recovery-ventilator\/\">the Blauberg Inhome mini 100mm is the quietest unit at <strong data-start=\"4471\" data-end=\"4501\">23 dB(A) at a distance of 3 meters<\/strong><\/a>.<\/h3>\n<h3 data-start=\"4371\" data-end=\"4542\">The Blauberg device also has built-in API capabilities (control via remote control, the device itself, and the app)<\/h3>\n<p data-start=\"4544\" data-end=\"4913\"><strong data-start=\"4544\" data-end=\"4555\">Note:<\/strong> There is a discrepancy here between different versions of O.ERRE\u2019s documentation. The 2026 technical PDF lists 29 dB(A) and 6.9 W, while the manufacturer\u2019s current English-language website lists 27 dB(A) and 4.2 W. Therefore, for the power consumption and noise level on the Pro Air product page, I would refer to the documentation for the specific version supplied to Estonia.<\/p>\n<h3 data-section-id=\"u0fi7n\" data-start=\"4915\" data-end=\"4933\">Easy to Maintain<\/h3>\n<p data-start=\"4935\" data-end=\"5126\">The GHOST-U uses easily accessible, <strong data-start=\"4976\" data-end=\"5003\">washable dust filters<\/strong>. The unit also features an LED indicator to show the device\u2019s functions and when the filter needs maintenance.<\/p>\n<p data-start=\"5128\" data-end=\"5185\">This makes regular maintenance easier for the user.<\/p>\n<h3 data-section-id=\"ehcr8s\" data-start=\"5187\" data-end=\"5220\">No condensate drain is required<\/h3>\n<p data-start=\"5222\" data-end=\"5384\">According to the manufacturer, the GHOST-U system does not require a separate condensate drain. The device\u2019s operating temperature range is <strong data-start=\"5324\" data-end=\"5343\">\u201330 to +50 \u00b0C<\/strong>.<\/p>\n<p data-start=\"5386\" data-end=\"5516\">This is a significant advantage when installing local ventilation, as there is no need to install separate condensate piping to the exterior wall.<\/p>\n<h3 data-section-id=\"1e8gqrv\" data-start=\"5518\" data-end=\"5538\">Technical Specifications<\/h3>\n<div class=\"group TyagGW_tableContainer\">\n<div class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"5540\" data-end=\"6143\">\n<thead data-start=\"5540\" data-end=\"5571\">\n<tr data-start=\"5540\" data-end=\"5571\">\n<th class=\"last:pe-10\" data-start=\"5540\" data-end=\"5549\" data-col-size=\"sm\">Feature<\/th>\n<th class=\"last:pe-10\" data-start=\"5549\" data-end=\"5571\" data-col-size=\"sm\">GHOST-U 100 ACTIVE<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"5582\" data-end=\"6143\">\n<tr data-start=\"5582\" data-end=\"5601\">\n<td data-start=\"5582\" data-end=\"5591\" data-col-size=\"sm\">Manufacturer<\/td>\n<td data-start=\"5591\" data-end=\"5601\" data-col-size=\"sm\">O.ERRE<\/td>\n<\/tr>\n<tr data-start=\"5602\" data-end=\"5632\">\n<td data-start=\"5602\" data-end=\"5610\" data-col-size=\"sm\">Model<\/td>\n<td data-start=\"5610\" data-end=\"5632\" data-col-size=\"sm\">GHOST-U 100 ACTIVE<\/td>\n<\/tr>\n<tr data-start=\"5633\" data-end=\"5660\">\n<td data-start=\"5633\" data-end=\"5645\" data-col-size=\"sm\">Product Code<\/td>\n<td data-start=\"5645\" data-end=\"5660\" data-col-size=\"sm\"><strong data-start=\"5647\" data-end=\"5658\">0028610<\/strong><\/td>\n<\/tr>\n<tr data-start=\"5661\" data-end=\"5719\">\n<td data-start=\"5661\" data-end=\"5675\" data-col-size=\"sm\">Equipment Type<\/td>\n<td data-start=\"5675\" data-end=\"5719\" data-col-size=\"sm\">Local ventilation with heat recovery<\/td>\n<\/tr>\n<tr data-start=\"5720\" data-end=\"5750\">\n<td data-start=\"5720\" data-end=\"5735\" data-col-size=\"sm\">Installation opening<\/td>\n<td data-start=\"5735\" data-end=\"5750\" data-col-size=\"sm\"><strong data-start=\"5737\" data-end=\"5748\">\u00d8100 mm<\/strong><\/td>\n<\/tr>\n<tr data-start=\"5751\" data-end=\"5788\">\n<td data-start=\"5751\" data-end=\"5773\" data-col-size=\"sm\">Maximum airflow<\/td>\n<td data-start=\"5773\" data-end=\"5788\" data-col-size=\"sm\"><strong data-start=\"5775\" data-end=\"5786\">30 m\u00b3\/h<\/strong><\/td>\n<\/tr>\n<tr data-start=\"5789\" data-end=\"5815\">\n<td data-start=\"5789\" data-end=\"5802\" data-col-size=\"sm\">Supply Voltage<\/td>\n<td data-start=\"5802\" data-end=\"5815\" data-col-size=\"sm\">220\u2013240 V<\/td>\n<\/tr>\n<tr data-start=\"5816\" data-end=\"5835\">\n<td data-start=\"5816\" data-end=\"5826\" data-col-size=\"sm\">Frequency<\/td>\n<td data-start=\"5826\" data-end=\"5835\" data-col-size=\"sm\">50 Hz<\/td>\n<\/tr>\n<tr data-start=\"5836\" data-end=\"5864\">\n<td data-start=\"5836\" data-end=\"5855\" data-col-size=\"sm\">Maximum pressure<\/td>\n<td data-start=\"5855\" data-end=\"5864\" data-col-size=\"sm\">72 Pa<\/td>\n<\/tr>\n<tr data-start=\"5865\" data-end=\"5887\">\n<td data-start=\"5865\" data-end=\"5879\" data-col-size=\"sm\">Protection Class<\/td>\n<td data-start=\"5879\" data-end=\"5887\" data-col-size=\"sm\">IPX4<\/td>\n<\/tr>\n<tr data-start=\"5888\" data-end=\"5905\">\n<td data-start=\"5888\" data-end=\"5895\" data-col-size=\"sm\">Weight<\/td>\n<td data-start=\"5895\" data-end=\"5905\" data-col-size=\"sm\">3.5 kg<\/td>\n<\/tr>\n<tr data-start=\"5906\" data-end=\"5937\">\n<td data-start=\"5906\" data-end=\"5923\" data-col-size=\"sm\">Operating temperature<\/td>\n<td data-start=\"5923\" data-end=\"5937\" data-col-size=\"sm\">\u201330\u2026+50 \u00b0C<\/td>\n<\/tr>\n<tr data-start=\"5938\" data-end=\"5978\">\n<td data-start=\"5938\" data-end=\"5966\" data-col-size=\"sm\">Connection to Other Devices<\/td>\n<td data-start=\"5966\" data-end=\"5978\" data-col-size=\"sm\">wired<\/td>\n<\/tr>\n<tr data-start=\"5979\" data-end=\"6001\">\n<td data-start=\"5979\" data-end=\"5994\" data-col-size=\"sm\">Humidity Sensor<\/td>\n<td data-start=\"5994\" data-end=\"6001\" data-col-size=\"sm\">Yes<\/td>\n<\/tr>\n<tr data-start=\"6002\" data-end=\"6024\">\n<td data-start=\"6002\" data-end=\"6017\" data-col-size=\"sm\">Twilight Sensor<\/td>\n<td data-start=\"6017\" data-end=\"6024\" data-col-size=\"sm\">Yes<\/td>\n<\/tr>\n<tr data-start=\"6025\" data-end=\"6061\">\n<td data-start=\"6025\" data-end=\"6054\" data-col-size=\"sm\">Synchronizing Devices<\/td>\n<td data-start=\"6054\" data-end=\"6061\" data-col-size=\"sm\">Yes<\/td>\n<\/tr>\n<tr data-start=\"6062\" data-end=\"6102\">\n<td data-start=\"6062\" data-end=\"6091\" data-col-size=\"sm\">Maximum number of devices in the system<\/td>\n<td data-start=\"6091\" data-end=\"6102\" data-col-size=\"sm\">up to 16<\/td>\n<\/tr>\n<tr data-start=\"6103\" data-end=\"6143\">\n<td data-start=\"6103\" data-end=\"6125\" data-col-size=\"sm\">Condensate Drain<\/td>\n<td data-start=\"6125\" data-end=\"6143\" data-col-size=\"sm\">is not necessary<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"6145\" data-end=\"6251\">The key data is taken from O.ERRE&#8217;s official GHOST-U documentation.<\/p>\n<h3 data-section-id=\"11hx5hy\" data-start=\"6253\" data-end=\"6284\">GHOST-U 100 or GHOST-U 160?<\/h3>\n<p data-start=\"6286\" data-end=\"6330\">The main differences are the installation opening and the airflow.<\/p>\n<p data-start=\"6332\" data-end=\"6457\"><strong data-start=\"6332\" data-end=\"6348\">GHOST-U 100:<\/strong> \u00d8100 mm and up to 30 m\u00b3\/h.<br \/>\n<strong data-start=\"6376\" data-end=\"6392\">GHOST-U 160:<\/strong> \u00d8160 mm and up to 60 m\u00b3\/h.<\/p>\n<p data-start=\"6459\" data-end=\"6579\">If the wall construction allows for a \u00d8160 mm opening and the room requires greater air exchange, the GHOST-U 160 model is the preferred choice.<\/p>\n<p data-start=\"6581\" data-end=\"6669\">However, if <strong data-start=\"6600\" data-end=\"6630\">minimizing the wall opening<\/strong> is a priority, the GHOST-U 100 is a very attractive solution.<\/p>\n<h3 data-section-id=\"hzuw6v\" data-start=\"6671\" data-end=\"6713\">GHOST-U ACTIVE, WIRELESS, or APP?<\/h3>\n<p data-start=\"6715\" data-end=\"6760\">The GHOST-U series is available in four versions:<\/p>\n<p data-start=\"6715\" data-end=\"6760\"><strong data-start=\"6789\" data-end=\"6799\">ACTIVE<\/strong> \u2013 wired connection between devices.<br \/>\n<strong data-start=\"6846\" data-end=\"6858\">WIRELESS<\/strong> \u2013 wireless connection between devices.<br \/>\n<strong data-start=\"6895\" data-end=\"6909\">APP O.TECH<\/strong> \u2013 a Wi-Fi and app-based solution.<\/p>\n<p data-start=\"6987\" data-end=\"7129\">The GHOST-U 100 ACTIVE is a good choice when it is possible to install the necessary wiring between the units during the planning phase of the ventilation system.<\/p>\n<h3 data-section-id=\"h5tzb7\" data-start=\"7131\" data-end=\"7161\">Well-suited for renovations<\/h3>\n<p data-start=\"7163\" data-end=\"7254\">GHOST-U 100 ACTIVE is particularly appealing for the renovation of existing apartments and single-family homes.<\/p>\n<p data-start=\"7256\" data-end=\"7439\">Installing a central heat recovery ventilation system may require running ventilation ducts throughout the entire building. With a local system, the units are installed directly on the exterior wall.<\/p>\n<p data-start=\"7441\" data-end=\"7561\">This makes it possible, for example, to improve ventilation in just a bedroom, living room, or home office without having to renovate the entire house.<\/p>\n<h3 data-section-id=\"9q2dil\" data-start=\"7563\" data-end=\"7592\">Frequently Asked Questions<\/h3>\n<h3 data-section-id=\"a7ygl4\" data-start=\"7594\" data-end=\"7649\">How large does the opening need to be to install the GHOST-U 100?<\/h3>\n<p data-start=\"7651\" data-end=\"7734\">The GHOST-U 100 requires <strong data-start=\"7669\" data-end=\"7693\">a \u00d8104 mm mounting hole<\/strong>.<\/p>\n<h3 data-section-id=\"1pe0kji\" data-start=\"7736\" data-end=\"7779\">How strong is the airflow of the GHOST-U 100 ACTIVE?<\/h3>\n<p data-start=\"7781\" data-end=\"7856\">The maximum airflow is <strong data-start=\"7804\" data-end=\"7815\">30 m\u00b3\/h<\/strong>.<\/p>\n<h3 data-section-id=\"1iquwdi\" data-start=\"7858\" data-end=\"7897\">Is the GHOST-U 100 suitable for a bedroom?<\/h3>\n<p data-start=\"7899\" data-end=\"8125\">Yes. According to the manufacturer, GHOST-U is designed, among other things, for ventilating bedrooms and living spaces. In bedrooms with low airflow requirements, the \u00d8100 model is particularly appealing due to its small installation opening.<\/p>\n<p data-start=\"7899\" data-end=\"8125\">The quieter version is: <a href=\"https:\/\/proair.ee\/en\/toode\/top-of-the-line-blauberg-vento-inhome-mini-w-25-m%c2%b3-h-wi-fi-heat-recovery-ventilator\/\">The Blauberg Inhome mini 100mm is the quietest unit at  <strong data-start=\"4471\" data-end=\"4501\">23 dB(A) at a distance of 3 meters<\/strong><\/a><\/p>\n<h3 data-start=\"4371\" data-end=\"4542\">The Blauberg device also comes with built-in API capabilities (control via remote control, the device itself, and the app)<\/h3>\n<h3 data-section-id=\"wmsa7\" data-start=\"8127\" data-end=\"8186\">Can GHOST-U 100 ACTIVE devices be connected to each other?<\/h3>\n<p data-start=\"8188\" data-end=\"8336\">Yes. ACTIVE-version devices are connected to each other via a cable, and up to 16 devices can be connected to a single system.<\/p>\n<h3 data-section-id=\"qpgve\" data-start=\"8338\" data-end=\"8370\">Does the device have a humidity sensor?<\/h3>\n<p data-start=\"8372\" data-end=\"8479\">Yes. The ACTIVE version has built-in humidity and twilight sensors.<\/p>\n<h3 data-section-id=\"1s1yjqa\" data-start=\"8481\" data-end=\"8524\">Does GHOST-U require a condensate drain?<\/h3>\n<p data-start=\"8526\" data-end=\"8640\">No. According to the manufacturer&#8217;s documentation, a separate condensate drain is not required.<\/p>\n<h3 data-section-id=\"1kxsp2i\" data-start=\"8642\" data-end=\"8695\">Is the GHOST-U 100 ACTIVE remote control included in the set?<\/h3>\n<p data-start=\"8697\" data-end=\"9017\">This must <strong data-start=\"8708\" data-end=\"8765\">be specified separately for each specific Pro Air kit<\/strong>. European distributors note that the control unit required to operate the ACTIVE version must be selected separately. The O.ERRE 2026 catalog also states that a control unit is required to use all the features of the ACTIVE version.<\/p>\n<h3 data-section-id=\"1630f2n\" data-start=\"9019\" data-end=\"9049\">When should you choose the GHOST-U 160?<\/h3>\n<p data-start=\"9051\" data-end=\"9248\">If a room needs more air exchange and a \u00d8160 mm wall opening is not a problem, the GHOST-U 160 has a maximum airflow of <strong data-start=\"9155\" data-end=\"9166\">60 m\u00b3\/h<\/strong>, compared to 30 m\u00b3\/h for the GHOST-U 100 model.<\/p>\n<p data-start=\"10199\" data-end=\"10271\">\n","protected":false},"excerpt":{"rendered":"<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"1yh5jot\" data-start=\"390\" data-end=\"457\">O.ERRE GHOST-U 100 ACTIVE Local Heat Recovery Ventilation Unit, \u00d8100 mm \u2013 30 m\u00b3\/h<\/h3>\n<p data-start=\"459\" data-end=\"666\"><strong data-start=\"459\" data-end=\"488\">The O.ERRE GHOST-U 100 ACTIVE<\/strong> is <strong data-start=\"502\" data-end=\"569\">a compact local heat recovery ventilation unit, or heat recovery ventilator<\/strong>, that improves air exchange in a room without the need to install a central ventilation duct system.<\/p>\n<p data-start=\"668\" data-end=\"898\">The unit is installed through an exterior wall <strong data-start=\"709\" data-end=\"727\">into an opening of just \u00d8100 mm<\/strong>, making the GHOST-U 100 ACTIVE particularly well-suited for apartments, single-family homes, and buildings undergoing renovation, where creating a larger ventilation opening is difficult.<\/p>\n<p data-start=\"900\" data-end=\"1122\">The maximum airflow is <strong data-start=\"923\" data-end=\"934\">30 m\u00b3\/h<\/strong>. The ACTIVE version allows multiple GHOST-U units to be connected via a cable and synchronized to form a comprehensive local ventilation system.<\/p>\n","protected":false},"featured_media":46238,"template":"","meta":{"_acf_changed":false,"_seopress_titles_title":"GHOST-U 100 ACTIVE Local Heat Recovery Unit \u00d8100 | Pro Air O\u00dc","_seopress_titles_desc":"O.ERRE GHOST-U 100 ACTIVE local heat recovery unit for a \u00d8100 mm opening. 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