Kitchen and bath exhaust fans

As high-performance homes get more air tight and better insulated, attention to good indoor air quality becomes essential.
Fans help to combat the harmful effects of dampness and condensation, and by extracting airborne pollutants such as odors, cooking smells, humid and stale air, the potential hazards to the health of occupants and possible damage to the fabric of the building can be largely eliminated.
Local exhaust ventilation is installed near common sources of moisture and pollutants in a home (most commonly, kitchens and bathrooms).
Kitchen and bathroom fans are designed to beat the toughest condensation and black mould issues within a property and ensure that poor air quality does not create an unhealthy living environment within the home. They are excellent at eradicating excess moisture, condensation and black mould issues that are localized within kitchen and bathroom environments.
Kitchen and bathroom fans extract the warm, moist air from your home and put it safely outside your property which will prevent condensation.
Exhaust-only ventilation systems draw outdoor air into the building through cracks and leaks in the building enclosure. Outside air that comes through garages, attics, crawlspaces, or walls may be contaminated with soil gases, dust, insulation, and other particulates. If a house is very air tight, the exhaust fan may not be able to draw in as much air as it exhausts, thus the home can become depressurized.
Balanced ventilation system will have both a supply and exhaust. A constant supply of fresh outdoor air can provide a greater assurance of good indoor air quality and improved comfort. Balanced ventilation systems can be equipped with a heat exchanger that recovers most of the heating and cooling energy from the exhaust air.
Saving energy is one reason to install a heat exchanger to recover as much heat as possible from waste gases.
There are two types of heat exchangers: sensible and total.
Sensible heat exchangers recover dry heat they are well suited for cold climates.
Total heat exchangers transfer heat and moisture for additional humidity control. They work well in both cold and moderately humid climates, and can help prevent moisture-related problems.
Balanced ventilation systems can be used safely with all types of heating and cooling equipment, but are more expensive than other ventilation systems (exhaust and supply ventilation).