SunEarth offers 1 20 gallon water heaters model in the lineup we track. This page is the SunEarth-specific cut of the broader 20-Gallon Water Heaters water heaters category — same product class, narrowed to the SunEarth catalog only.
SunEarth — Specialty water-heater manufacturer serving the US market.
For the complete SunEarth lineup across all sub-types and capacities, see the SunEarth Water Heaters hub.
If you're cross-shopping 20 gallon water heaters beyond SunEarth, the following brands also ship in this category:
The 20-gallon water heater is the upper-tier point-of-use size — sized for single-occupant ADUs, pool houses, RV park-models, small cabins, and tiny homes. The 20G supports a full normal shower (5–7 minutes at 2 GPM) plus 1–2 hand-washes before recovery — adequate for 1-occupant whole-bathroom service.
For the complete 20 gallon buyer's guide (all brands, full comparison framework), see the 20-Gallon Water Heaters category hub.
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