NAECA Guidelines



2015 NAECA


NAECA 2015 Replacement Unit Options


Energy Factor Regulations

NAECA IIIEnergy Factor Regulations

Note: For gas-fired units, NAECA applies only to gas-fired storage heaters below 75,000 BTUs and tankless water heaters below 200,000 BTUs.

Tankless NAECA Minimum Efficiency Standards will remain at the previous rating of .82 EF for all gas tankless units under 200,000 BTUs of input.