The indoor plant that outputs the most humidity is the Areca Palm. It releases copious amount of moisture into the air, removes environmental toxins, and is tolerant of indoor spaces. Definitely one of the most useful houseplants out there!

Areca Palms are available on Amazon.

See our post on How To Grow Fresh Air for more information.

Notes from Manufacturer:

Recommended for drier climates. Works when humidity < 40%
Features:

• Cut your cooling costs by up to 90%
• Low wattage cooling: from 20 to 150 watts
• This is a cooler that can run on 1 or 2 solar panels, or a car battery
  charger
• More environmentally friendly - no freon
• Cabinet is 24 gauge stainless steel, warranted against leaking for
  5 years

Cool 110°F air to 75°F by evaporating water. Nearly 16,000 BTUs
of cooling is gained for each gallon of water evaporated. Evaporation rates
in the Solar Chill™ can range from 1 to 7 gallons per hour. The extremely
low wattage allows the solar chill to operate well on just one or two solar
PV panels. This lowers the payback period for a Solar Chill™ system
to about 3 to 5 years. Though we recommend powering the Solar Chill™ with
PVs, they can also be run on 115 VAC Adapters, or even a car battery charger.

The Solar Chill™ uses an 8" thick, wetted CelDek™ pad,
and is efficient for both airflow and evaporation. The Celdek costs $20
per cubic foot. The large cooler pad costs $75 (included with purchase)
and should last for 5 years with proper maintenance.

Highly efficient DC motors, usually with permanent magnets replace the
inefficient AC induction motor. Propeller fans are used to move the air
in the Solar Chill™ instead of the traditional squirrel cage type
blower (which require higher wattage’s).

Minimal duct work is recommended with a Solar Chill™ to obtain maximum
efficiency with lower wattages. All of our models can optionally be made
into down draft models for roof installation, with the addition of a 90
degree elbow. Local sheet metal shops can easily and inexpensively make
one of these out of 24 or 26 gauge galvanized steel.

Purchase from: Alternative
Energy Store ($487 - $928)

Notes from Manufacturer:

The IceStrMystr IM30 combines ice induced Air
Conditioning with the age-old art of evaporative cooling. The cold water
rushes through a special Cooling Core to produce air-conditioned air instead
of merely evaporative cooled air. You can now choose your own size of cooling
container. The water contained in your Ice Chest is cooled by ice or ice
substitutes like reusable Freeze Packs which are available in many local
stores in most areas.

You can get cooler air from an IceStrMystr
than a standard Evaporative Cooler, even after the ice melts. This is possible
because of the two stage cooling process.

A fully charged 105 amp hour deep cycle battery should
last from 8 to 12 hours on low or medium speeds without charging.

The IM-30 evaporative system will cool for two to four hours on one gallon
of water. Incorporating the dual cooling system, by adding ice, provides
a sizable temperature drop from evaporative cooling alone. If you do not
need the cold air ice produces and the humidity is low, you may wish to
accelerate the evaporative cooling system by utilizing reusable Freeze
Packs.

How it works: Block or cube ice is placed in the ice chest which chills
the water. The water is then pumped into a special chilling core inside
the Swampy and also through the evaporative pads. The blower motor draws
ambient air through the evaporative pads pre-cooling the air before it
is drawn through the chilling core. After the air is cooled it is directed
outward to cool the occupants. The water that has been used plus excess
humidity in the air and not evaporated during this process is then returned
back to the ice chest to complete the cycle.

Price: $487
including shipping

Home Page: Swampy.Net