Smart ventilation fans tackle indoor air quality problems (Video)
New homes are tightly built to save energy, but this can often times have a negative impact on a home without proper ventilation.
Air within your home can be up to 10 times more polluted than the air outside. Microbial pollutants like mold, pet dander and plant pollen along with chemicals such as radon and volatile organic compounds (VOCs) create a toxic environment in your home. The build-up of pollutants such as these is shown to lead to allergies, asthma and other health concerns.
As homes become tighter, ventilation is becoming more important to indoor air quality.
To combat the issue of poor ventilation, many studies from Building Science organizations, government and independent building science experts indicate that today’s homes need whole house ventilation throughout the day to maintain a healthy indoor environment.
Patrick Nielsen marketing manager, ventilation fans for Broan-NuTone explains why proper ventilation is needed to prevent buildup of pollutants, humidity, mold and mildew. Broan Nu-Tone ULTRA Series Fans are powerful, energy-efficient, quiet and smart, using sensors to automatically adjust to humidity levels.
Whole house ventilation solutions include:
An exhaust only system removes stale and moisture-laden air from the home. It works by extracting indoor air from a house while make-up air infiltrates through leaks in the building shell and through intentional, passive vents. Typically exhaust-only solutions remove air from rooms where moisture and pollutants is most often generated (kitchen, bathrooms and perhaps the laundry room).
Supply ventilation systems involve the use of a fan to bring outside air into the home while air leaks out of the home through holes in the shell, fan ducts and intentional vents (if any exist). A typical supply ventilation system introduces fresh air into usually one or more rooms within the home that residents occupy most often (e.g., bedrooms, living room).
Balanced ventilation systems, if properly designed and installed, neither pressurize nor depressurize a home. Rather, they introduce and exhaust approximately equal quantities of fresh outside air and polluted inside air, respectively.
A balanced ventilation system works within the home’s HVAC system to facilitate proper distribution of fresh air throughout the living environment. Fresh air supply and exhaust vents can be installed in every room but are primarily focused to supply fresh air to bedrooms and living rooms where people spend the most time. It is also functional to exhaust air from rooms where moisture and pollutants are most often generated (kitchen, bathrooms and perhaps the laundry room).
Nielsen said the ULTRA line of fans and fan/lights provide humidity- or motion-sensing capabilities while featuring universal installation to save contractors time and help meet stringent green building and ventilation codes.
Available in single- and multi-speed models (motion-sensing capability featured in multi-speed models only), ULTRA Fans and Fan/Lights with ULTRASense operate at less than 0.3 Sones — the lowest sound rating possible — while operating or adjusting fan speed based on changes in humidity or motion.
"ULTRA Ventilation Fans and Fan/Lights with ULTRASense technology combine the features of the original ULTRA Series -- asy installation, quiet operation and energy efficiency -- with new, convenient humidity- or motion-sensing capability," Nielsen said. "ULTRA Fans and Fan/Lights help contractors save time on installation and meet green building requirements. They also provide long-lasting benefits to users, such as extremely quiet operation, unbelievable performance and, now, the ability to detect humidity or motion and either turn a single-speed fan ON or adjust the CFM level of a multi-speed fan."
Read more about ventilation.
Companies: U.S. EPA