VESTA VRP PLUS-199

The registry lists this model's UEF, the ratio of hot water delivered to energy used, as 0.95. The 178 therms figure does not come from the registry. This site calculated it from that UEF and the DOE test's daily hot-water draw for the high pattern. The source data is DOE CCD, retrieved 2026-09-19. Among the 397 gas tankless models tested at the high draw pattern, this one ranks 45th lowest in energy use. That puts it in the lowest quarter of its class, where the median is 182 therms. The steps behind the annual figure are on the page explaining how the annual cost is calculated.

The high draw pattern describes a larger household, or one where showers and laundry overlap. The 178 therms result assumes that level of daily use, so it applies to homes that use hot water at that level. The registry also lists this model's maximum flow rate in gallons per minute as 6. The annual figure does not use that rating; it comes from UEF and the test draw only. A home with lighter daily use falls outside this draw pattern, so the 178 therms figure will not describe it. This page has no figure for this model at other draw patterns. To compare units in the same class, use the same-class replacement search by model number.

This text gives no running cost for the VESTA VRP PLUS-199. That cost depends on your state's average residential gas price, which this text does not assume. The page calculates it from your ZIP, using your state's price and the 178 therms figure. You can also use the water heater cost calculator for your ZIP. Any cost gap against the 182 therms class median depends on that same rate. Your actual bill depends on your household's real hot-water use, which the registry does not record. The installed price range appears in a separate block, with its source and date. It is a modeled installed-cost range, not a quote.