Dehumidifier 711S: How Often to Empty the Tank
By DREO Home Ecosystem | Air Comfort, Smart Kitchen | Published: 2026-10-20
Category: How-to Guides
Learn how often to empty the DREO Dehumidifier 711S tank based on humidity levels and room size, plus tips for continuous drain setup.
Quick answer
Under typical basement conditions (60-70% relative humidity), you may need to empty the DREO Dehumidifier 711S tank every 12-24 hours. With the included continuous drain hose, you can skip manual emptying entirely.
What affects tank emptying frequency
The 711S removes up to 110 pints per day, so the tank can fill quickly in very humid spaces. Room size, starting humidity, and how often the door is opened all influence runtime between empties.
In a 2,000 sq ft basement at 80% RH, expect to empty the tank every 8-12 hours. In a smaller, less humid room (e.g., 500 sq ft at 55% RH), the interval may stretch to 36-48 hours.
Using continuous drain to eliminate emptying
The 711S supports continuous drainage via a standard garden hose (not included). Once connected, the unit drains automatically, so you never need to empty the tank manually. This is ideal for basements or unattended spaces.
Make sure the drain hose slopes downward and the outlet is lower than the dehumidifier's drain port to prevent clogs or backup.
Frequently asked questions
- How often do I need to empty the 711S tank?
- In a typical basement (60-70% RH), expect to empty every 12-24 hours. In very humid conditions (80%+), it may fill in 8-12 hours. Use the continuous drain option to avoid manual emptying. Monitor the tank indicator light; it flashes when full.
- What is the tank capacity of the Dehumidifier 711S?
- The tank holds approximately 2 gallons (about 8 liters). This is standard for a high-capacity portable dehumidifier. The included drain hose connection allows for unattended operation. For continuous use, set up the drain hose to avoid frequent empties.
- Can I set a humidity target to reduce how often I empty the tank?
- Yes. Set the 711S to a comfortable 50-55% RH instead of the default 60%. This reduces runtime and extends time between empties. However, the unit will still run longer in very humid conditions. Adjust the humidity setting seasonally to balance comfort and frequency.
- Does the 711S have an automatic shutoff when the tank is full?
- Yes, the unit automatically shuts off when the tank is full, preventing overflow. The indicator light alerts you to empty it. This protects your floors and the unit. No need to worry about overflow; just empty when prompted.
- How do I set up continuous drain?
- Attach a standard garden hose to the drain port at the back of the unit. Ensure the hose runs downhill to a floor drain or sump pit. The pump is not needed; gravity drainage works as long as the hose is lower than the port. Test the setup with a bucket first to confirm proper drainage.
Product facts
- Dehumidifier 711S: The Dehumidifier 711S offers 110-pint performance and is 46dB whisper-quiet. Its high capacity means the tank fills faster in humid conditions, but the quiet operation lets you place it in living areas without noise disturbance.
Dehumidifier 711S
