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A. O. Smith

Most Efficient Water Heater Systems by A. O. Smith

SYSTEM TYPE TANK SIZE EFFICIENCY (UEF) SOLD AS (BRANDS & MODELS)  
Heat Pump 67 gal 4.02 A. O. Smith , American , Lochinvar , Reliance , State 10-66-DHPTS 2**, HPS10-66H45DV 2**, HPSX-66-DHPT 2**, HPTS-66 2**, HPS10266H045DV 2**, HPSA065KD 2** View System
Heat Pump 67 gal 4.02 A. O. Smith , American , Lochinvar , Reliance , State 10-66-DHPTS 2**, HPS10-66H45DV 2**, HPSX-66-DHPT 2**, HPTS-66 2**, HPS10266H045DV 2**, HPSA065KD 2** View System
Heat Pump 67 gal 4.02 A. O. Smith , American , Lochinvar , Reliance , State 10-66-DHPTS 2**, HPS10-66H45DV 2**, HPSX-66-DHPT 2**, HPTS-66 2**, HPS10266H045DV 2**, HPSA065KD 2** View System
Heat Pump 67 gal 4.02 A. O. Smith , American , Lochinvar , Reliance , State 10-66-DHPTS 2**, HPS10-66H45DV 2**, HPSX-66-DHPT 2**, HPTS-66 2**, HPS10266H045DV 2**, HPSA065KD 2** View System
Heat Pump 67 gal 4.02 A. O. Smith , American , Lochinvar , Reliance , State 10-66-DHPTS 2**, HPS10-66H45DV 2**, HPSX-66-DHPT 2**, HPTS-66 2**, HPS10266H045DV 2**, HPSA065KD 2** View System
Heat Pump 67 gal 4.02 A. O. Smith , American , Lochinvar , Reliance , State 10-66-DHPTS 2**, HPS10-66H45DV 2**, HPSX-66-DHPT 2**, HPTS-66 2**, HPS10266H045DV 2**, HPSA065KD 2** View System
Heat Pump 81 gal 3.88 A. O. Smith , American , Lochinvar , Reliance , State HPPA080KD 2**, HPTA-80 2**, HPA10-80H45DV 2**, HPA10280H045DV 2**, 10-80-DHPTA 2**, HPAX-80-DHPT 2** View System
Heat Pump 82 gal 3.88 A. O. Smith , American , Lochinvar , Reliance , State HPS10-80H45DV 2**, HPSX-80-DHPT 2**, 10-80-DHPTS 2**, HPSA080KD 2**, HPTS-80 2**, HPS10280H045DV 2** View System
Heat Pump 81 gal 3.88 A. O. Smith , American , Lochinvar , Reliance , State HPPA080KD 2**, HPTA-80 2**, HPA10-80H45DV 2**, HPA10280H045DV 2**, 10-80-DHPTA 2**, HPAX-80-DHPT 2** View System
Heat Pump 82 gal 3.88 A. O. Smith , American , Lochinvar , Reliance , State HPS10-80H45DV 2**, HPSX-80-DHPT 2**, 10-80-DHPTS 2**, HPSA080KD 2**, HPTS-80 2**, HPS10280H045DV 2** View System
SYSTEM TYPE TANK SIZE EFFICIENCY (UEF) SOLD AS (BRANDS & MODELS)  
Gas Tankless None gal 0.95 A. O. Smith , American , Lochinvar , Reliance , State , Takagi GT-540-NEH 1**, GT-540P-NEH 1**, TS-540X3-GEH 1**, LCT-199O-N 1**, GTS-540X3-NEH 1**, TK-540P-NEH 1**, T-H3-OS-N 1**, GT15-540-NO 1**, TCT-199O-N 1**, TS-540P-GEH 1**, ATO-540P-N 1**, GTS-540P-NEH 1**, GTS-540-NEH 1**, GT-540X3-NEH 1**, LTO-540HX3-N 1**, ATO-540H 1**, LTO-540H-N 1**, SCT-199O-N 1**, LTO-540P-N 1**, MCT-199O-N 1**, TS-540-GEH 1**, ACT-199O-N 1**, ATO-540HX3-N 1** View System
Gas Tankless None gal 0.95 A. O. Smith , American , Lochinvar , Reliance , State , Takagi T-H3-OS-P 1*1, SCT-199O-P 1*1, ATO-540H 1*1, GTS-540P-PEH 1*1, GT-540-PEH 1*1, GTS-540X3-PEH 1*1, LTO-540HX3-P 1*1, TS-540X3-LEH 1*1, LCT-199O-P 1*1, GT-540X3-PEH 1*1, MCT-199O-P 1*1, GTS-540-PEH 1*1, LTO-540P-P 1*1, ACT-199O-P 1*1, TK-540P-PEH 1*1, TCT-199O-P 1*1, TS-540P-LEH 1*1, ATO-540P-P 1*1, TS-540-LEH 1*1, ATO-540HX3-P 1*1, GT-540P-PEH 1*1, LTO-540H-P 1*1 View System
Gas Tankless 1 gal 0.95 A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State GT15THR-160X3 1**, STHR-160X3 1**, LTHR-160M 1**, MTHR-160X3 1**, STHR-160M 1**, ATHR-160X3 1**, GTHR-160M 1**, LTHR-160X3 1**, GTHR-160X3 1**, RTHR-160M 1**, RTHR-160X3 1**, JTHR-160M 1**, MTHR-160M 1**, GT15THR-160M 1**, JTHR-160X3 1**, ATHR-160M 1** View System
Gas Tankless 1 gal 0.95 A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State GT15THR-160X3 1**, STHR-160X3 1**, LTHR-160M 1**, MTHR-160X3 1**, STHR-160M 1**, ATHR-160X3 1**, GTHR-160M 1**, LTHR-160X3 1**, GTHR-160X3 1**, RTHR-160M 1**, RTHR-160X3 1**, JTHR-160M 1**, MTHR-160M 1**, GT15THR-160M 1**, JTHR-160X3 1**, ATHR-160M 1** View System
Gas Tankless 1 gal 0.95 A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State JTHR-180M 1**, LTHR-180M 1**, MTHR-180M 1**, GT15THR-180M 1**, RTHR-180X3 1**, STHR-180X3 1**, MTHR-180X3 1**, GTHR-180X3 1**, LTHR-180X3 1**, ATHR-180X3 1**, GTHR-180M 1**, STHR-180M 1**, JTHR-180X3 1**, ATHR-180M 1**, GT15THR-180X3 1**, RTHR-180M 1** View System
Gas Tankless 1 gal 0.95 A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State JTHR-180M 1**, LTHR-180M 1**, MTHR-180M 1**, GT15THR-180M 1**, RTHR-180X3 1**, STHR-180X3 1**, MTHR-180X3 1**, GTHR-180X3 1**, LTHR-180X3 1**, ATHR-180X3 1**, GTHR-180M 1**, STHR-180M 1**, JTHR-180X3 1**, ATHR-180M 1**, GT15THR-180X3 1**, RTHR-180M 1** View System
Gas Tankless 1 gal 0.95 A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State GTHR-199M 1**, ATHR-199X3 1**, RTHR-199X3 1**, LTHR-199X3 1**, ATHR-199M 1**, MTHR-199M 1**, JTHR-199X3 1**, GT15THR-199X3 1**, GT15THR-199M 1**, GTHR-199X3 1**, RTHR-199M 1**, JTHR-199M 1**, LTHR-199M 1**, STHR-199X3 1**, STHR-199M 1**, MTHR-199X3 1** View System
Gas Tankless 1 gal 0.95 A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State GTHR-199M 1**, ATHR-199X3 1**, RTHR-199X3 1**, LTHR-199X3 1**, ATHR-199M 1**, MTHR-199M 1**, JTHR-199X3 1**, GT15THR-199X3 1**, GT15THR-199M 1**, GTHR-199X3 1**, RTHR-199M 1**, JTHR-199M 1**, LTHR-199M 1**, STHR-199X3 1**, STHR-199M 1**, MTHR-199X3 1** View System
Gas Tankless None gal 0.95 A. O. Smith , American , Lochinvar , Reliance , State , Takagi GT-540-NEH 1**, GT-540P-NEH 1**, TS-540X3-GEH 1**, LCT-199O-N 1**, GTS-540X3-NEH 1**, TK-540P-NEH 1**, T-H3-OS-N 1**, GT15-540-NO 1**, TCT-199O-N 1**, TS-540P-GEH 1**, ATO-540P-N 1**, GTS-540P-NEH 1**, GTS-540-NEH 1**, GT-540X3-NEH 1**, LTO-540HX3-N 1**, ATO-540H 1**, LTO-540H-N 1**, SCT-199O-N 1**, LTO-540P-N 1**, MCT-199O-N 1**, TS-540-GEH 1**, ACT-199O-N 1**, ATO-540HX3-N 1** View System
Gas Tankless None gal 0.95 A. O. Smith , American , Lochinvar , Reliance , State , Takagi T-H3-OS-P 1*1, SCT-199O-P 1*1, ATO-540H 1*1, GTS-540P-PEH 1*1, GT-540-PEH 1*1, GTS-540X3-PEH 1*1, LTO-540HX3-P 1*1, TS-540X3-LEH 1*1, LCT-199O-P 1*1, GT-540X3-PEH 1*1, MCT-199O-P 1*1, GTS-540-PEH 1*1, LTO-540P-P 1*1, ACT-199O-P 1*1, TK-540P-PEH 1*1, TCT-199O-P 1*1, TS-540P-LEH 1*1, ATO-540P-P 1*1, TS-540-LEH 1*1, ATO-540HX3-P 1*1, GT-540P-PEH 1*1, LTO-540H-P 1*1 View System

Conventional Electric Ain't Efficient!

Guess what!? Conventional electric Water Heaters are not efficient enough for Energy Star to certify them, and these days, there's no reason not to get a heat pump water heater, so you won't find any here.