The U.S. Energy Department tested the efficiency levels claimed by makers of tankless and storage-style water heaters. The Air-Conditioning, Heating and Refrigeration Institute said the products had perfect results, unlike most other appliances tested.

An HVACR manufacturers association says it is pleased by the results of tests on water heaters done by the U.S. Department of Energy.

As part of an Energy Star program, the Energy Department tested the efficiency levels claimed by makers of tankless and storage-style water heaters. The Air-Conditioning, Heating and Refrigeration Institute said the products had perfect results, unlike most other appliances tested.

“The results of these tests support our belief that our certification participants’ products are being properly rated and should not be the focus of enhanced federal scrutiny,” said AHRI President and CEO Stephen Yurek. “The water heater tests are an excellent indication that AHRI’s private-sector certification program should be relied upon by DOE to verify compliance with federal energy-efficiency standards.

“The complete results indicate that the department’s focus would be better aimed at other product categories, where there has not been a long history of an industry supported and recognized certification program,” Yurek added.

The AHRI represents most of the major manufacturers of heating, cooling and refrigeration equipment.