HEATING SYSTEMS BOILERS
General Requirements: Only natural gas equipment is eligible for incentives. Boilers fueled by electric, propane, or oil are NOT eligible for incentives. Redundant or backup boilers do not qualify. Condensing boilers (≥90% thermal efficiency) will provide maximum efficiency only if the return water temperature is cool enough to condense flue gases. If the heating system configuration cannot provide necessary operating conditions to the boiler, selection of a non-condensing or near-condensing boiler may be more appropriate. HOT WATER BOILERS Requirements: • Boiler incentives are only available for equipment used in space heating applications. Boilers used for only domestic hot water heating and industrial or process heating are not eligible for this incentive but may qualify for a custom incentive. • Space heating boilers also used for DHW may be eligible for incentives but are subject to requirements. • In plant systems, boilers are eligible for incentives only if their primary use is space heating. • A boiler replacing a space heating and indirect DHW system will use the capacity of the existing space heating and DHW systems to estimate the percent of capacity used for space heating to determine incentive. • Boilers that only serve DHW are not eligible for the space heating incentives. • Boiler efficiency will be verified using the AHRI database (see ahridirectory.org). If the boiler is not listed in the AHRI database, provide a boiler specification sheet with boiler input and output ratings and thermal efficiency. • Steam boilers do not meet efficiency requirements and are not eligible for this incentive but may qualify for a custom incentive. Hot water boiler ≥90% thermal efficiency replacing a steam boiler is eligible. • If the heating system configuration is such that the boiler needs to operate at a high hot water temperature which prevents the flue gases from condensing (as described above in the General Requirements), then the boiler is not eligible.
• Boilers must be capable of capacity modulation. • Do not round AHRI capacity to a whole number.
EQUIPMENT UPGRADES AND RETROFITS Measure Description
Code
Incentive
Unit
H3276
$5
MBh
Hot Water Boilers ≥300 MBh input, ≥90% Thermal Efficiency
NEW CONSTRUCTION AND MAJOR RENOVATIONS Measure Description
Code
Incentive
Unit
N-H3276
$5
MBh
Hot Water Boilers ≥300 MBh input, ≥90% Thermal Efficiency
CUSTOM PROJECT IDEA Talk to your Energy Advisor about custom incentives that may be available for reducing energy waste by installing a supply air reset program to your AHU to better match building load and minimize simultaneous heating and cooling.
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