LW1812HR - Air conditioner LG - Free user manual and instructions
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| Product Type | Window Air Conditioner |
| Brand | LG |
| Model | LW1812HR |
| Cooling Capacity | 18,000 BTU per hour |
| Energy Efficiency | EER 10.8 |
| Power Supply | 230V, 60Hz |
| Rated Current | 8.5 A |
| Dimensions (W × H × D) | 26.0 × 18.5 × 27.0 inches |
| Net Weight | 88 lbs |
| Airflow Rate | 350 CFM |
| Fan Speeds | 3 cooling, 3 fan speeds |
| Control Type | Digital display with remote control |
| Air Filter | Washable, easy-access |
| Installation | Window mounting kit included |
| Refrigerant | R410A |
| Maintenance | Simple filter cleaning and coil maintenance |
| Warranty | 1-year parts and labor, 5-year compressor |
Frequently Asked Questions - LW1812HR LG
How do I install the LG LW1812HR window air conditioner?
Place the unit on a sturdy window sill, extend the side panels, and close the window. Use the included mounting bracket and secure the frame. Make sure the unit has a slight downward tilt to allow water drainage. Plug into a dedicated 230V outlet.
What are the dimensions and weight of the LW1812HR?
The LG LW1812HR measures 26 x 18.5 x 27 inches and weighs 88 lbs. Always verify your window opening before purchase, as a minimum width of 27 inches is typically required.
How do I clean the air filter?
Remove the front grille to access the filter. Wash it with warm water and mild detergent, then let it dry completely before reinstalling. Clean the filter every 2 weeks under normal use to maintain airflow and efficiency.
What should I do if the air conditioner stops cooling?
Check if the air filter is dirty, ensure the thermostat is set correctly, and verify the unit is plugged in. Also inspect the circuit breaker and make sure the window is closed to prevent hot air infiltration. If the fan runs but no cool air, the compressor might be in thermal overload — wait 30 minutes and retry.
Does the LW1812HR require a dedicated circuit?
Yes, this 230V air conditioner draws around 8.5 amps. It needs a dedicated outlet with grounding to prevent circuit overload and ensure reliable operation. Do not use an extension cord.
How often should I perform maintenance on this unit?
Clean the filter every two weeks, check the condensate drain for blockages at the start of the season, and store the unit in a dry place during winter. An annual inspection of the fan and cooling coils by a technician is recommended.
Can this unit be installed in a casement window?
No, the LW1812HR is designed for double-hung windows. Casement windows require specialized vertical units or custom installation. Always use the provided window slide panels for proper sealing.
How do I set the temperature with the remote?
Use the remote's Temp Up/Down buttons to adjust the setpoint. The digital display shows the current temperature. Press the Cool mode to activate cooling, then adjust the fan speed as needed.
What type of refrigerant does the LW1812HR use?
This unit uses R410A, an ozone-friendly refrigerant. Never attempt to service the refrigerant loop yourself; always call a certified HVAC technician.
How should I prepare the air conditioner for winter storage?
Remove the unit from the window or cover it completely if it must stay in place. Clean the filter and let it dry, disconnect power, and store in a dry area. Avoid covering any vents before they are fully dry to prevent mold.
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USER MANUAL LW1812HR LG
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Product information
Brand : LG
Model : LW1812HR
Category : Air conditioner