Yes, it is generally recommended to tilt a window air conditioner slightly during installation. Tilting the unit helps with proper drainage of condensation that builds up during the cooling process.
Here are a few considerations when tilting a window air conditioner:
Proper Drainage: Window air conditioners have a condensate drain pan or a collection tray that collects the moisture extracted from the air. Tilting the unit allows the condensation to drain properly. Typically, a tilt of about 1/4 to 1/2 inch (0.6 to 1.3 cm) towards the outside is recommended.
Drainage Direction: The window air conditioner should be tilted in a way that encourages water to flow towards the outside of the window. This helps prevent water from accumulating inside the unit or leaking into the interior of the room.
Leveling: While tilting is important for drainage, it is also essential to ensure that the air conditioner remains level horizontally. Use a leveling tool or a spirit level to make sure the unit is installed evenly and maintains its stability.
Manufacturer's Guidelines: Follow the specific installation instructions provided by the manufacturer of your window air conditioner. They may have specific recommendations or requirements regarding tilting or leveling the unit.
It's worth noting that some modern window air conditioners have improved designs that reduce the amount of condensation produced or include mechanisms to manage the condensate more efficiently. In such cases, the need for significant tilt may be minimized or eliminated. Consult the user manual of your specific air conditioner model for accurate guidance on tilting and installation instructions.