NOx Emission Standards: Water Heaters - HD Supply

NOx Emissions Standards for Water Heaters

HD Supply carries low and ultra low nitrogen oxide (NOx) water heaters that comply with the emissions standards set by California and Texas. Both commercial grade and residential water heaters must meet lower emissions standards in those states. All other states require standard models.

Shop All Water Heaters

Commercial Water Heaters

Low NOx commercial water heaters are required in Texas and ultra low NOx water heaters are required in most of California.

Shop Low NOx Commercial Gas Water Heaters

Residential Water Heaters

Residential water heaters in California must be ultra low NOx — all other states require standard models. Ultra Low NOx emissions standards are required in these California air quality management districts:

Shop Ultra Low NOx Residential Water Heaters