VENTILATION AND CONTROLS VENTILATION UPGRADES
ENERGY RECOVERY VENTILATORS (ERV) Requirements: • Complete Table D of the “HVAC Incentive Catalog Supplemental Data Sheet” for this measure. • Provide efficiency of the building’s cooling and heating systems to two decimal places. This information will not affect ERV incentive. If the heating or cooling efficiency of equipment for space served by the ERV is unknown, provide the manufacturer’s name and model instead. • For Winter and Summer Effectiveness, use the Net Total % Effectiveness at 100% flow from AHRI database. • Incentive intended for standard HVAC applications only; other applications such as industrial process heat recovery may be eligible for a custom incentive. • 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. • Replacement of existing ERV and use of ERV where required by state code does NOT qualify. • 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 incentive. • 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. • Sensible & Latent energy recovery ventilators recover both heat and moisture from the exhaust air in order to maintain the indoor air humidity levels. Sensible only energy recovery ventilators only recover heat from the exhaust air and vent the humidity to outdoors. This is commonly done for spaces like locker rooms. Sensible only ERVs can be identified on spec sheets and AHRI performance ratings since the latent and net latent effectiveness are zero.
EQUIPMENT UPGRADES AND RETROFITS Measure Description
Code
Incentive
Unit
Energy Recovery Ventilator, Sensible & Latent Heat
H2314*
$0.90
CFM
Energy Recovery Ventilator, Sensible Heat Only
H5082*
$0.80
CFM
* Supplemental Data Sheet needed
NEW CONSTRUCTION AND MAJOR RENOVATIONS Measure Description
Code
Incentive
Unit
Energy Recovery Ventilator, Sensible & Latent Heat
N-H2314*
$0.70
CFM
Energy Recovery Ventilator, Sensible Heat Only
N-H5082*
$0.50
CFM
* Supplemental Data Sheet needed
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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