Hot Water List

Vesta water heaters

15 basic models and 15 listed models.

Certified figures by basic model

Vesta basic models and their certified figures
Basic modelTypeUEFFlow at a 67°F rise (gal/min)Recovery efficiencyModel numbers
VHP-199 Gas tankless 0.955.797% VHP-199
VRP PLUS-199 Gas tankless 0.956.098% VRP PLUS-199
VRP-150 Gas tankless 0.954.397% VRP-150
VRP-199 Gas tankless 0.955.797% VRP-199
VRP-PLUS-150 Gas tankless 0.954.799% VRP-PLUS-150
VRS PLUS-150 Gas tankless 0.964.699% VRS PLUS-150
VRS PLUS-199 Gas tankless 0.965.999% VRS PLUS-199
VRS-150 Gas tankless 0.954.295% VRS-150
VRS-199 Gas tankless 0.955.595% VRS-199
VTP-150 Gas tankless 0.964.799% VTP-150
VTP-199 Gas tankless 0.966.098% VTP-199
VTS-150 Gas tankless 0.964.699% VTS-150
VTS-199 Gas tankless 0.965.999% VTS-199
VX 9 Gas tankless 0.966.096% VX 9
VXP 9 Gas tankless 0.966.096% VXP 9

A range means the models under one basic model differ. A dash means the model has no such figure.

Hot water out per unit of energy in, called UEF, reaches 0.96 among Vesta models. With 0.96, not all the energy used ended up in the water. The VRS PLUS-150 is one of 8 basic models with that UEF. Its basic models with an ENERGY STAR certified model number come to 9 of 15.

Each one this brand lists is a gas tankless water heater. Its highest flow without a tank comes from 4 basic models. In the test, that flow warms by 67°F at 6.0 gallons per minute.

On this site, 34 of the 117 brands list more model numbers than this one. On this site, only this brand lists these basic model numbers.

Updated Oct 17, 2026 · Methodology