VENTILATION UPGRADES
ENERGY RECOVERY VENTILATORS (ERV) Requirements:
• Areas served by ERVs must be air conditioned during the periods of June through September from 2 p.m. to 6 p.m. on weekdays and heated during the winter by natural gas or electric from a participating utility. If this requirement is not met, the project may be eligible for a custom incentive. • Equipment must be AHRI certified to Standard 1060 (see ahridirectory.org). ERV design submittal and spec sheet must be provided. • Efficiency ratings (supply airflow, winter, and summer effectiveness) will be verified using the AHRI database ( ahridirectory.org ) when data is available. The lesser of the actual project CFM and the AHRI-rated supply CFM will be used to calculate the rebate. • For equipment where AHRI only lists the manufacturer’s selection software, provide an output report from the software showing supply airflow and net winter and summer effectiveness at the intended project conditions. • Custom engineered ERVs, and ERVs integral to packaged rooftop units or air handlers which use AHRI certified heat exchangers must provide documentation (supply airflow, winter and summer, manufacturer, model number) specific to the heat exchanger component within the overall system. Measure Description Code Rebate Unit Energy Recovery Ventilator, Sensible & Latent Heat H2314* $1.35 CFM Energy Recovery Ventilator, Sensible Heat Only H5082* $1.25 CFM Energy Recovery Ventilator, Sensible & Latent Heat N-H2314* $1.25 CFM Energy Recovery Ventilator, Sensible Heat Only N-H5082* $0.95 CFM *Complete Table D on the Supplemental Data Sheet.
PRO TIP Facilities with large quantities of exhaust air or long hours of operation can use ERVs to recover between 50% and 85% of the cooling and heating energy that would otherwise be lost. An ERV designed to exchange both latent and sensible energy will precool and dehumidify outside ventilation air during the cooling season while preheating and humidifying during the heating season.
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