waterheaterspecs

Solar · tank and tankless backup

Rheem solar systems

The Rheem solar systems line holds four certified rating sets of solar water heating systems, 4 model numbers sold as Rheem, listed by Rheem-Ruud Manufacturing. Solar UEF values run from 4.8 to 9.9 and collector areas from 24.7 sq ft to 82 sq ft.

Certified as of October 27, 2026 · EPA ENERGY STAR data, public domain · Compare in the Heater finder

Size by size

Certified values of Rheem solar systems
Rating setSolar UEFCollector, sq ftCollector typeSolar tank, galBackupSystem
Rheem RS120-64BP-TG1 model number, gas backup9.965.7Flat Plate120tanklessIndirect Forced Circulation
Rheem RS80-40BP1 model number, electric backup4.824.7Flat Plate80tankIndirect Forced Circulation
Rheem RS80-40BP-TG1 model number, gas backup824.7Flat Plate80tanklessIndirect Forced Circulation
Rheem RS80-48BP1 model number, electric backup5.982Flat Plate80tankIndirect Forced Circulation

Solar UEF against collector area, these systems among all solar listings

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Solar UEF

Solar UEF against collector area, these systems among all solar listings051015202520304050607080Collector area, sq ftAET B-DBS-G2-80-64AET DX-120-64AET DX-80-40AET FF-80-42Dimas 300-3 ELGREENoneTEC Double EGREENoneTEC Double GTGREENoneTEC HEGREENoneTEC L-ExtraGREENoneTEC L-GTHeliodyne HF 1 406 G 40 AC S EHeliodyne HF 1 408 G 60 AC S EHeliodyne HF 1 410 G 80 AC S EMC Green B80-20Sammler A169Sammler US200-25Sammler US200-42Solahart ASE 302JSunEarth C2-26T-40-TLGSunEarth C2-40T-50-TLGTychon FPS/HP 300Universal Solar Products C80-18Universal Solar Products D120-18Rheem RS120-64BP-TGRheem RS80-40BPRheem RS80-40BP-TGRheem RS80-48BP
Solar UEF against collector area, these systems among all solar listings051015202520406080Collector area, sq ftAET B-DBS-G2-80-64AET DX-120-64AET DX-80-40AET FF-80-42Dimas 300-3 ELGREENoneTEC Double EGREENoneTEC Double GTGREENoneTEC HEGREENoneTEC L-ExtraGREENoneTEC L-GTHeliodyne HF 1 406 G 40 AC S EHeliodyne HF 1 408 G 60 AC S EHeliodyne HF 1 410 G 80 AC S EMC Green B80-20Sammler A169Sammler US200-25Sammler US200-42Solahart ASE 302JSunEarth C2-26T-40-TLGSunEarth C2-40T-50-TLGTychon FPS/HP 300Universal Solar Products C80-18Universal Solar Products D120-18Rheem RS120-64BP-TGRheem RS80-40BPRheem RS80-40BP-TGRheem RS80-48BP
Each circle is one system. Solar UEF values are shown as listed in the dataset.

Collector size among the solar listings

The median collector area of the 27 solar systems on the list is 40.6 sq ft. Solar UEF values are shown as listed and not ranked (see Test and data).

SystemCollector areaAmong the 27 solar systemsFreeze limitSRCC OG-300 number
Rheem RS120-64BP-TG65.7 sq ftthird largest−30 °F2010048C
Rheem RS80-40BP24.7 sq ft25th largest−30 °F2009033D
Rheem RS80-40BP-TG24.7 sq ft25th largest−30 °F2010048A
Rheem RS80-48BP82 sq ftlargest−30 °F2009033A

Model numbers

The line covers 4 model numbers, all certified 2020-11-13.

Model numberBrandRating setModel nameFreeze limitCertified
RS120-64BP-TGRheemRS120-64BP-TGSOLPAK−30 °F2020-11-13
RS80-40BPRheemRS80-40BPSOLPAK−30 °F2020-11-13
RS80-40BP-TGRheemRS80-40BP-TGSOLPAK−30 °F2020-11-13
RS80-48BPRheemRS80-48BPSOLPAK−30 °F2020-11-13

Nearest certified alternatives

Rating setCollector areaBackupSystem
AET B-DBS-G2-80-64compared with Rheem RS120-64BP-TG−0.4 sq fttankIndirect Forced Circulation
GREENoneTEC L-Extracompared with Rheem RS80-40BP+1.0 sq fttankDirect ICS
Heliodyne HF 1 406 G 40 AC S Ecompared with Rheem RS80-40BP+2.3 sq fttankDirect Forced Circulation
Heliodyne HF 1 408 G 60 AC S Ecompared with Rheem RS80-40BP+7.5 sq fttankDirect Forced Circulation
Dimas 300-3 ELcompared with Rheem RS80-40BP+6.8 sq fttankDirect Thermosyphon

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