Like all other Portable Air Conditioners, the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR has to be vented to the outside otherwise all you will be doing is just recycling the hot moisture-laden air back into the room that the air conditioner is installed in so you do have to use the flexible vent hose when you run the unit in Cool and Fan mode. The only time that you can run the unit without the flexible vent hose is when you run it in Dry Mode when you need dehumidification in high humidity only without any cooling. You can remove the drain plug for the upper drain port and when using the Dry (dehumidifying) mode and install a drain hose (16mm [5/8”] inside diameter) and place the open end of the hose over a drain or bucket or out the window...^Ivan

The flexible vent hose for the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR has a diameter of 5", however, it has an oval-shaped diffuser on the end that attaches to the window vent panel so you can vent the unit to the outside that has a diameter of about 6 1/2"...^Ivan

When the internal water collection tank in the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR will need to be emptied when it is full. When the internal water collection tank is full, the LED display will show E5 and the air conditioner will turn off until the tank is emptied. The air filters should be cleaned every two weeks; depending on your indoor air quality, more frequent cleaning may be needed. A dirty air filter will decrease airflow and reduce the air conditioner's efficiency. You can use a vacuum cleaner to clean the filters. If the filters are heavily soiled, they can be washed in warm water using a mild detergent. YOu can download and print out a PDF copy of the owner's manual (instruction manual) from the support page for the air conditioner on our site...^Ivan

There is nothing wrong with the Air Conditioner. It is working as designed. As described in the "Emptying the Water Collection Tank" section on page 24 of your owner's manual for the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR, under 'Using the Lower Drain Port', "When the internal water collection tank is full, the LED display will show E5 and the air conditioner will turn off until the tank is emptied"...^Ivan

Is the temperature that you are referring to in Celsius or Fahrenheit? The ▲/▼buttons on the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR adjust the set temperature for the air conditioner from 60°F to 86°F (16°C to 30°C) in one-degree increments. If you are running the DRY mode (dehumidification mode) for the air conditioner to remove humidity from the room, the target temperature is automatically set to 4°F (2°C) below the current room temperature. If desired, the temperature differential can be manually set by using the ▲/▼ buttons, within a range of -4°F (-2°C) less to 4°F (2°C) more than the room temperature. Unlike a dehumidifier that you can set for a targeted percentage of humidity in a room, this air conditioner cannot be set for a targeted percentage of humidity in a room and it cannot read the current humidity level in a room automatically since it does not have built-in humidity reading...^IFV

When you ask about the "duct" for the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR, are you referring to the exhaust vent hose that fits on the back of the portable air conditioner? The part number for the exhaust duct hose with connectors is Part # COV33315501 which can be ordered from our LG Authorized Parts Distributor affiliate, Encompass Simply Parts, (800) 432- 8542, https://encompass.com. This item is currently out of stock until 06/30/2021 or 9 days. The part number for just the exhaust vent hose without connectors is Part # COV33315201 and that is currently in stock...^IFV

In comparison to other cooling options, such as window-mounted AC units and central air, portable units are, for the most part, less energy efficient in general. There is no EER (Energy Efficiency Rating) listed for our Portable Air Conditioners. They all have the new ASHRAE Standard for Portable Air Conditioners. The LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR is a discontinued product, but it has an ASHRAE 128 STD Cooling BTU Performance of 8,000 BTU. The EER can be calculated for the unit and it would be an EER of 8.2...^IFV

Please contact our Authorized Parts Distributor to inquire about the Drain Pipe for the LG 8,000 BTU Portable Air Conditioner, Model # LP0817WSR. Encompass Parts Distribution 775 Tipton Industrial Dr. Suite F Lawrenceville, GA 30046 Sales: 866-779-7906 Fax: 800-552-1431 https://lg.encompass.com/ ...^IFV