Vesta VTS-150

Vesta VTS-150 is in the DOE listing as of Oct 19, 2026. Vesta VTS-150 is in the ENERGY STAR list as of Oct 19, 2026. Vesta VTS-150 was included in the recall notice “VESTA.DS Recalls VST Brand Tankless Water Heaters Due to Carbon Monoxide (CO) Poisoning Hazard and Risk of Serious Injury and Death” on Oct 16, 2025 (recall date).

Gas tankless water heater
1 listed model

Its figures are also listed under Vesta VRS PLUS-150.

Flow at a 67°F rise: 4.6gallons per minute
UEF: 0.96Uniform energy factor

See it among every gas tankless model

Flow where you live

Colder incoming water needs a bigger rise, so the heater gives less flow.

Cold water: Cold water must be at least 10°F colder than the hot water setting.
Flow estimate: The estimate uses the lowest certified flow among the listed models. It is about 4.4 gal/min at a 70°F rise.

Flow limits

The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
Cold water from a well or long pipe run can differ from the temperature you enter.
Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.

Product history

Vesta VTS-150 was in the DOE listing by Oct 1, 2026.

Vesta VTS-150 was included in the recall notice “VESTA.DS Recalls VST Brand Tankless Water Heaters Due to Carbon Monoxide (CO) Poisoning Hazard and Risk of Serious Injury and Death” on Oct 16, 2025 (recall date).

Vesta VTS-150 has a recorded ENERGY STAR market-availability date of Oct 16, 2023. It first appeared in the ENERGY STAR list between October 2025 and February 2026.

Certified figures by listed model

Vesta VTS-150: certified figures by listed model
Model number	UEF	Flow at a 67°F rise (gal/min)	Recovery efficiency	Draw pattern
VTS-150	0.96	4.6	99%	High

UEF is the uniform energy factor. A dash means the model has no such figure.

ENERGY STAR certified models

Vesta VTS-150: ENERGY STAR certified models
Model number	UEF	Flow at a 67°F rise (gal/min)	Recovery efficiency
VTS-150	0.96	4.6	99%

It heats 4.6 gallons per minute of water by 67°F in the test. The median gas tankless model heats 4.8 gallons per minute by 67°F. Of 487 gas tankless models, 300 have a higher flow than this one.

Its single model number, VTS-150, is ENERGY STAR certified. In tests, 96% of the energy it uses ends up as hot water (UEF 0.96). Its test ran at the high level of daily hot water use. Among 399 gas tankless models on its draw pattern, 15 have a higher UEF. On its draw pattern, the median gas tankless UEF is 0.93. While it heats water, 99% of the energy used goes into the water (its recovery efficiency).

Its test figures match those of one other basic model. For the full group, see the Vesta VRS PLUS-150.

It may qualify for 6 rebate programs. Another 2 rebate programs may accept it if it meets their other terms.

Also listed as

They carry every figure in the table above.

Vesta VRS PLUS-150

Rebates

Vesta VTS-150: rebate programs
Program	State	Status	Program page
SoCalGas High-Efficiency or ENERGY STAR Certified Natural Gas Tankless Water Heaters rebate	CA	May qualify	Its own page
Colorado Springs Utilities Water heater rebate (gas storage, gas tankless)	CO	May qualify	Its own page
Nicor Gas Energy Efficiency Rebates for Your Home (gas tankless)	IL	May qualify if it meets the other terms	Its own page
DTE Energy Water Heaters (gas storage, gas tankless)	MI	May qualify	Its own page
Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless)	MN	May qualify	Its own page
PSE&G Tankless Water Heaters	NJ	May qualify	Its own page
Energy Trust of Oregon Residential Incentives	OR, WA	May qualify	Its own page
Focus on Energy (gas tankless)	WI	May qualify if it meets the other terms	Its own page

Programs change their terms. Check the program's own page before you buy.

Updated Oct 19, 2026 · Methodology

Not covered

Advertised figures. We have none on file for this model.