What is the most energy-efficient dehumidifier available?

The Midea Cube MAD50PS1Q is a 50-pint, ENERGY STAR certified dehumidifier with a unique nested cube design, a large 4.2-gallon water tank, and a built-in pump for continuous drainage. It's compact (about 14.45 in x 14.76 in x 14.57 in), quiet, smart-enabled, and designed for large spaces up to ~4,500 sq ft. Ideal for basements, large rooms, or anyone wanting less frequent emptying and flexible drainage options.

The Aprilaire E100 is a professional-grade whole-house dehumidifier that removes up to 100 pints (12.5 gallons) per day, is ENERGY STAR Most Efficient, and offers ducting options, a washable MERV 8 filter, and built-in digital control. It is built for durability with corrosion-resistant aluminum coils and is designed for basements, crawl spaces, or whole-home use up to about 5,500 sq. ft. It supports continuous drain installation to avoid emptying a water bucket.

Wi‑Fi enabled 50‑pint dehumidifier with built‑in pump and caster wheels; removes up to 50 pints per 24 hours, has a 14.3‑pint (1.79 gallon) tank, continuous drain options and adjustable humidistat (35-80%). Suited for large rooms/basements up to ~4,500 sq ft that need automated or remote control and continuous drainage.

The Frigidaire FHDD2234W1 is a 22-pint Energy Star certified portable dehumidifier with built-in Wi‑Fi, three fan speeds, and continuous drain capability. It includes a 1.7-gallon bucket, digital humidity readout, low-temperature operation to 41°F, and app/Alexa/Google Home control, suited for small to medium rooms needing remote monitoring.

Compact 35‑pint cube dehumidifier for spaces up to ~3,500 sq ft with Wi‑Fi smart control, lift‑and‑twist nested/extended tank design, caster wheels, and continuous‑drain option. ENERGY STAR certified and marketed for quieter operation and larger water capacity versus traditional designs, suitable for basements and large rooms.

A smart 50-pint portable dehumidifier with Wi‑Fi, optional internal pump, continuous drain and Energy Star certified efficiency (integrated energy factor 2.01 L/kWh). Designed for large spaces and basements, it includes a 15‑pint internal tank, washable filter, auto‑defrost and app/voice control for remote operation. Suits users who need high-capacity, energy-efficient moisture control with smart features.