waterheaterspecs

Solar · tank backup

AET solar systems

The AET solar systems line holds four certified rating sets of solar water heating systems, 4 model numbers sold as AET, listed by Alternate Energy Technologies. Solar UEF values run from 1.9 to 6.7 and collector areas from 40.6 sq ft to 65.3 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 AET solar systems
Rating setSolar UEFCollector, sq ftCollector typeSolar tank, galBackupSystem
AET B-DBS-G2-80-641 model number, gas backup1.965.3Flat Plate80tankIndirect Forced Circulation
AET DX-120-641 model number, electric backup5.865.3Flat Plate–tankIndirect Forced Circulation
AET DX-80-401 model number, electric backup3.540.6Flat Plate–tankIndirect Forced Circulation
AET FF-80-421 model number, electric backup6.743Flat Plate50tankDirect Thermosyphon

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 ftDimas 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 B80-20Rheem RS120-64BP-TGRheem RS80-40BPRheem RS80-40BP-TGRheem RS80-48BPSammler A169Sammler US200-25Sammler US200-42Solahart ASE 302JSunEarth C2-26T-40-TLGSunEarth C2-40T-50-TLGTychon FPS/HP 300Universal Solar Products C80-18Universal Solar Products D120-18AET B-DBS-G2-80-64AET DX-120-64AET DX-80-40AET FF-80-42
Solar UEF against collector area, these systems among all solar listings051015202520406080Collector area, sq ftDimas 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 B80-20Rheem RS120-64BP-TGRheem RS80-40BPRheem RS80-40BP-TGRheem RS80-48BPSammler A169Sammler US200-25Sammler US200-42Solahart ASE 302JSunEarth C2-26T-40-TLGSunEarth C2-40T-50-TLGTychon FPS/HP 300Universal Solar Products C80-18Universal Solar Products D120-18AET B-DBS-G2-80-64AET DX-120-64AET DX-80-40AET FF-80-42
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
AET B-DBS-G2-80-6465.3 sq ftfourth largest−58 °F2010017C
AET DX-120-6465.3 sq ftfourth largest−58 °F2006007E
AET DX-80-4040.6 sq ft14th largest−58 °F2006007A
AET FF-80-4243 sq ft12th largest−58 °F2011052D

Model numbers

The line covers 4 model numbers, all certified 2019-11-12.

Model numberBrandRating setModel nameFreeze limitCertified
B-DBS-G2-80-64AETB-DBS-G2-80-64EagleSun−58 °F2019-11-12
DX-120-64AETDX-120-64EagleSun DX−58 °F2019-11-12
DX-80-40AETDX-80-40EagleSun DX−58 °F2019-11-12
FF-80-42AETFF-80-42EagleSun−58 °F2019-11-12

Nearest certified alternatives

Rating setCollector areaBackupSystem
Rheem RS120-64BP-TGcompared with AET B-DBS-G2-80-64+0.4 sq fttanklessIndirect Forced Circulation
Universal Solar Products D120-18compared with AET DX-120-64+6.6 sq fttankDirect Thermosyphon
Rheem RS80-48BPcompared with AET DX-120-64+16.7 sq fttankIndirect Forced Circulation
GREENoneTEC Double Ecompared with AET DX-80-40+4.0 sq fttankDirect ICS
Tychon FPS/HP 300compared with AET DX-80-40+2.5 sq fttankDirect Thermosyphon

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