The choice to install whole-house ventilation is generally inspired by a worry that natural ventilation is failing to provide enough air quality, despite having source control through spot ventilation. Whole-house ventilation systems offer regulated and even ventilation all throughout the home. These units make use at least one fan and duct system to pull in stale air and/or supply cleaner and fresher air to the home. There are four whole house ventilation types that you can choose from in the market today.
Exhaust Ventilation Systems
Exhaust ventilation systems function by depressurizing the home or the commercial building. By lowering the air pressure indoors than the outdoor air pressure, they pull in indoor air from a house while outdoor air gets in through openings in the building shell and by means of deliberate and passive vents. Exhaust ventilation systems are most applicable in cold climates. In climates with warm and humid summer season, depressurization could pull moist air into building wall spaces, where it could condense and result in moisture damage.
Supply Ventilation Systems
Supply ventilation systems controlled by pressurizing the house or building. They make use of a fan to push outside air inside the building while air comes out of the structure through holes in the shell, bath as well as range fan ducts, and intentional vents, in case it is installed. Supply ventilation systems will provide you with better air control that gets into the home or building than exhaust ventilation systems. By pressurizing the structure, supply ventilation systems prevent the entry of pollutants from the outdoors to the living area and stop back drafting of flammable gases from basic electrical appliances as well as fireplaces. Supply ventilation systems are well suited for mixed or hot weather conditions.
Balanced Ventilation Systems
Balanced ventilation systems do not use pressurizing or depressurizing in homes provided that they are properly designed and installed. Rather, they introduce and exhaust approximately equal quantities of fresh outside air and polluted inside air, respectively. Balanced ventilation systems are appropriate for all climates. A balanced ventilation system usually has two fans and two duct systems and facilitates good distribution of fresh air by placing supply and exhaust vents in appropriate places. Balanced systems are usually more expensive to install and operate than supply or exhaust systems because they require two duct and fan systems.
Balanced, Heat-Recovery Ventilation Systems
A unique kind of balanced ventilation system brings a heat-recovery unit to the standard design. A heat-recovery system lowers the heating and cooling expenses of ventilation by shifting heat from the warm indoor air being depleted to the fresh yet cold outdoor air during the winter season, and vice-versa in the summer months. how does whole house ventilation work is also enhanced since the supply air is cooled down before distribution, decreasing drafts. Some heat-recovery units also shift moisture, which is beneficial in warm, humid weather in the summer and cold climates during winter. Balanced, heat-recovery systems are the cheapest in climates with severe summers or winters, and where fuel expenses are high. In locations with milder weather, the costs associated with the additional electricity taken by the fans might surpass the energy savings from not needing to cool and heat the air presented by the ventilation unit.
When selecting a unit, there are three important steps to choosing a ventilation system that works: Design correctly. Install properly. Commission completely. Commissioning is like a quality-control examination to ensure that what you did works as expected. Be sure to get them right, and you will get a unit that will be able to do its job, offer the best indoor air quality, and, maybe most importantly, not be disabled by the residents who do not like the noise or comfort issues that most ventilation units possess.