RenewAire

RenewAire has been the innovator and leader in energy efficient residential ventilation since 1993. With the aerodynamically engineered design to move air with the lowest power consumption and sound levels, RenewAire ERVs (Energy Recovery Ventilators) allow stale room air to be exhausted and fresh, outdoor air is brought back into the house.

RenewAire offers the best ventilation choice for your home, whether you have a new home under construction or an existing home needing a ventilation upgrade. RenewAire provides powerful, quiet blowers in both its ventilation fans and energy recovery ventilators. This allows you to enjoy ample air exchange without the objectionable noise associated with lower quality products. RenewAire ventilation fans are the most efficient line available in North America. RenewAire ERVs provides the best “whole house” approach to efficient and effective ventilation.

The key to RenewAire’s extraordinary performance is its static-plate exchange core. Within the core, heat and humanity pass from one airstream to the other, but the airstreams do not mix. Humidity exchange is in the gas phase so there is no need for a condensate pan or drain. These two airstreams are directed through a highly developed “air-in-air” energy exchange core. The airstreams are physically separated by many layers of “plates” so there is no mixing or contamination of fresh air. The plates are made of an engineered “resin” material that simultaneously transfers heat by conduction and humidity by attracting and “wicking” water vapor from one air stream to the other.

RenewAire V Series Ventilation Fans are economical and effective exhaust ventilation for bathrooms, utility rooms, and other spot exhaust applications, provide the lowest power consumption of any fan line in the industry, are designed for continuous operation, and are so quiet you can’t hear it.

RenewAire EV Series Ventilation Fans for green ventilation exhausts stale air, brings in fresh air, saves energy year-round, uses a low carbon footprint. They replace bathroom exhaust fans, use duct work system to collect air from each exhaust location, and are perfect.

For more information, contact our main office at 781-320-9910 to speak with one of our Sales Reps or visit:

www.renewaire.com

Position Statement - Massachusetts Residential Code Requirements

POSITION STATEMENT

780 CMR EIGHTH EDITION AND MASSACHUSETTS RESIDENTIAL MECHANICAL CODE FAN EFFICACY REQUIREMENTS

BACKGROUND

It has come to our attention that the 780 CMR Eighth Edition and Massachusetts Residential Code fan efficacy requirement of 2.8 cfm per watt that is required for bath fans and air handlers is incorrectly being applied to energy recovery ventilators (ERV). This misinterpretation of the code mainly arose because REMRateTM, the most commonly used rating software to show compliance to the residential code, had incorrectly applied the fan efficacy requirement for bath fans and air handlers to ERV. PRODUCT Residential Heat Recovery Ventilators (HRV) and Energy Recovery Ventilators (ERV). DISCOVERY/INTERPRETATION Upon further research into this problem, we discovered that the bath fan and air handler fan efficacy requirements were never intended to apply to ERV’s and do not apply to ERV’s. Furthermore we also learnt that NORESCO, the third party developer for the software, was contacted by the person who authored this portion of the code, who indicated he was seeking a clarification from ICC based on his stated intent for that section. On this basis, NORESCO has removed the fan efficacy requirement for HRVs and ERVs in version 15.0 of the REMRate software. The figure below is the software enhancement version history for v15.0 of the REMRate software that shows that the application of fan efficacy requirements do not apply to ERV’s have been removed from the software. Figure 1 - REMRate Software Version History Note CONCLUSION The fan efficacy requirements of the 780 CMR Eighth Edition and Massachusetts Residential Code only apply to bath fans and air handler and do not apply to energy recovery ventilators. Additionally REMRate nce to the Code. Bath fans and Air Handlers use energy to move air, ERV’s save energy over and above the energy used to move that air.

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