Without proper ventilation the unit may not be able expel the hot room air, causing it work less efficiently or even overheat. These air conditioning units are ideal for small rooms, and they can easily be moved. However, they will not be in effect until 2025. A portable air conditioner can be a great alternative if you want to avoid that but still need to keep cool in your home during warmer seasons. This is a feature that is only available on portable ACs. This means that you don't need to call a Dallas, TX air conditioning service to get your AC working. Portable cooling tends to be inefficient and expensive over time. This air conditioner is made of high quality components. Clear the drain line. Also, your AC will constantly turn on and shut off, which may affect its performance in the future. Internal bucket (used mostly in older models) - you must manually empty an internal bucket every 8 hours, or more often if it is used. In fact, they're mounted close to the bottom (up to 6 inches higher than the floor) of the wall. Good insulation is important for reducing heat infiltration and improving A/C cooling efficiency and overall comfort. While not the fastest unit that we tested, it was a remarkable performance at this price point for a mobile AC. Homeowners or renters can purchase a portable ac unit for their specific needs.