Dehumidifiers use a heat pump (similar to an air conditioner's heat pump) or compound adsorbents to eliminate moisture from the air without chilling the air.
A temperature pump dehumidifier runs on the supporter to best dehumidifiers with pump bring indoor air around a temperature change coil. The coil is practically freezing. The water in the air condenses on the coil and is drained. A second heat change coil reheats the air, which the dehumidifier exhausts to the room.
A temperature pump dehumidifier deposits heat missing from the compressor and supporter motors to the air. It returns to the indoor air the warmth produced by the dehumidifier turning water vapour to liquid.
Compound adsorbent dehumidifiers
This sort of dehumidifier is designed for hot, damp areas and is certainly not suited to used in Canada.
Compound adsorbent dehumidifiers absorb moisture from the air with a "desiccant"--a drying agent such as silica gel. The desiccant is on a temperature change wheel. A separate air hook cures the wheel and exhausts the hot, moist air outside through special ducting.
A compound adsorbent dehumidifier employs more energy when compared to a heat pump dehumidifier. It's only cost-effective when it employs organic gasoline for heat exchange--and then only if organic gasoline can be obtained at a reduced summer rate.
Handmade dehumidifier
Some inventive people use bags of road de-icing sodium to absorb moisture from the air. The wet sodium answer drains into a pan or floor drain, drying the air. Because the sodium runs off with the water taken from the air, it should be replaced. The system does not have any moving parts.
In the event that you take to this do-it-yourself dehumidifier, remember that sodium is very corrosive to metals and rather difficult on the skin.
Dehumidifying ventilators
This sort of dehumidifier includes a sensor-controller and exhaust fan. You place the sensor-controller to run when moisture reaches a collection level. A dehumidifying ventilator is specially powerful if the moisture supply is in your basement.
Dehumidifying ventilators don't retrieve heat but they use less energy than heat pump dehumidifiers. They are perhaps not powerful in hot, muggy temperature, while they provide more external air to the house. They could be powerful in cool weather.
A dehumidifying ventilator depressurizes your cellar, which could cause combustion gasoline spillage. Make fully sure your heating contractor checks the ventilation for the gasoline heater, water heater and wood-burning appliances. Consider utilizing a carbon monoxide caution device if you put in a dehumidifying ventilator.
Selecting a Dehumidifier
Dehumidifier buy costs
Temperature pump dehumidifiers are complex, low-production devices and aren't low-cost items. Spring seems to be the most effective time to purchase: within the last few couple of years traders have held sales early in the spring with savings of $50 to $100.
The more water a dehumidifier holds --which is assessed in litres or U.S. pints a day--the more it costs. You pay more for special features.
In 2000, you are able to assume to pay for between $200 and $250 for a system ranked at 10 M (21 U.S. pints or 2.1 imperial gal.) a day--suitable for a small house with a reasonable moisture problem. The purchase price rises to between $250 and $350 for a system with a capacity of 20 M (42 U.S. pints or 4.3 imperial gal.) a day--suitable for a big home with increased extreme problems.
Operating costs for both models are a comparable should they both have the same Performance Factor. The next section describes the Performance Factor.
Don't take to to save income by buying a device that will not have intelligent defrost. If your space is too cool, a dehumidifier may frost around and stop removing moisture. A frosted-over dehumidifier remaining running for a long time will separate down.
Get a system with a two-speed fan. They are quieter at lower moisture, which decreases the pain factor. Check all models in the keep for noise stage, particularly if you intend to use one in or near a bedroom.