Lochinvar offers 3 100 gallon water heaters models in the lineup we track. This page is the Lochinvar-specific cut of the broader 100-Gallon Water Heaters water heaters category — same product class, narrowed to the Lochinvar catalog only.
Lochinvar — Commercial water heaters and boilers, plumber-channel.
For the complete Lochinvar lineup across all sub-types and capacities, see the Lochinvar Water Heaters hub.
If you're cross-shopping 100 gallon water heaters beyond Lochinvar, the following brands also ship in this category:
The 100-gallon water heater is a true commercial-residential capacity — sized for light-commercial applications and estate-class residential where demand exceeds the standard 75-gallon residential maximum. 100G water heaters carry commercial warranties (typically 3 years) reflecting their higher duty cycle.
Explore Lochinvar from other angles: