Comparison · under-sink reverse osmosis

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System vs iSpring Water Systems LLC RO500AK-BN

Certified reductions, five-year cost and fit, for two under-sink reverse osmosis systems.

verified 2026-09-21
sources 20

FilterSpecs verdict

how we score
GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System $259.99 · $0.28 per gallon

5.9 /10

Not scored

iSpring Water Systems LLC RO500AK-BN

— /10

Not scored

Only GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System holds enough data to score, so this comparison cannot pick a winner on the numbers.

Where they differ

30 of 26 fields

Only the fields where the two systems actually differ. Everything else is identical and sits in the full comparison below.

Table 1 · Differences, plain English
DifferenceGE Appliances GXRV40TBN Reverse Osmosis Drinking Water SystemiSpring Water Systems LLC RO500AK-BN
Arsenic removalNSF/ANSI 58 Certified winner Not covered no listing
Asbestos (fibers longer than 10 micrometers) removalNSF/ANSI 58 Certified winner Not covered no listing
Bacteria removalNSF P231 Certified winner Not covered no listing
Barium removalNSF/ANSI 58 Certified winner Not covered no listing
Cadmium removalNSF/ANSI 58 Certified winner Not covered no listing
Chromium-3 (trivalent chromium) removalNSF/ANSI 58 Certified winner Not covered no listing
Chromium-6 (hexavalent chromium) removalNSF/ANSI 58 Certified winner Not covered no listing
Copper removalNSF/ANSI 58 Certified winner Not covered no listing
Cysts (Cryptosporidium, Giardia) removalNSF/ANSI 58 Certified winner Not covered no listing
Fluoride removalNSF/ANSI 58 Certified winner Not covered no listing
Free chlorine removalNSF/ANSI 42 Certified winner Not covered no listing
Lead removalNSF/ANSI 58 Certified winner Not covered no listing
Nitrate (as N) removalNSF/ANSI 58 Certified winner Not covered no listing
PFOA removalNSF/ANSI 58 Certified winner Not covered no listing
PFOS removalNSF/ANSI 58 Certified winner Not covered no listing
Pharmaceuticals and emerging contaminants removalNSF/ANSI 401 Certified winner Not covered no listing
Radium 226 and 228 combined removalNSF/ANSI 58 Certified winner Not covered no listing
Selenium removalNSF/ANSI 58 Certified winner Not covered no listing
Taste and odor removalNSF/ANSI 42 Certified winner Not covered no listing
Total dissolved solids removalNSF/ANSI 58 Certified winner Not covered no listing
Turbidity and sediment removalNSF/ANSI 58 Certified winner Not covered no listing
Virus removalNSF P231 Certified winner Not covered no listing
Volatile organic compounds (VOC surrogate claim) removalNSF/ANSI 53 Certified winner Not covered no listing
How much it makes a dayDaily production 12.2 GPD Not published
Adds minerals backRemineralization Yes Not published
Minimum water pressure 40 psi Not published
Maximum water pressure 100 psi Not published
Dimensions 3.625 x 12.5 x 9.25 in Not published
Installation DIY, easy Not published
Warranty, parts 1 yr Not published

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Certified reductions compared

IAPMO R&T · NSF

✓certified a third-party listing exists · ~claimed manufacturer states it, no listing · —not covered no claim made. [1]

Table 2 · Certification status by contaminant
ContaminantGE Appliances GXRV40TBN Reverse Osmosis Drinking Water SystemiSpring Water Systems LLC RO500AK-BN
Arsenic ✓Certified NSF/ANSI 58 —Not covered
Asbestos (fibers longer than 10 micrometers) ✓Certified NSF/ANSI 58 —Not covered
Bacteria ✓Certified NSF P231 —Not covered
Barium ✓Certified NSF/ANSI 58 —Not covered
Cadmium ✓Certified NSF/ANSI 58 —Not covered
Chromium-3 (trivalent chromium) ✓Certified NSF/ANSI 58 —Not covered
Chromium-6 (hexavalent chromium) ✓Certified NSF/ANSI 58 —Not covered
Copper ✓Certified NSF/ANSI 58 —Not covered
Cysts (Cryptosporidium, Giardia) ✓Certified NSF/ANSI 58 —Not covered
Fluoride ✓Certified NSF/ANSI 58 —Not covered
Free chlorine ✓Certified NSF/ANSI 42 —Not covered
Lead ✓Certified NSF/ANSI 58 —Not covered
Nitrate (as N) ✓Certified NSF/ANSI 58 —Not covered
PFOA ✓Certified NSF/ANSI 58 —Not covered
PFOS ✓Certified NSF/ANSI 58 —Not covered
Pharmaceuticals and emerging contaminants ✓Certified NSF/ANSI 401 —Not covered
Radium 226 and 228 combined ✓Certified NSF/ANSI 58 —Not covered
Selenium ✓Certified NSF/ANSI 58 —Not covered
Taste and odor ✓Certified NSF/ANSI 42 —Not covered
Total dissolved solids ✓Certified NSF/ANSI 58 —Not covered
Turbidity and sediment ✓Certified NSF/ANSI 58 —Not covered
Virus ✓Certified NSF P231 —Not covered
Volatile organic compounds (VOC surrogate claim) ✓Certified NSF/ANSI 53 —Not covered

Arsenic

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Asbestos (fibers longer than 10 micrometers)

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Bacteria

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF P231
iSpring Water Systems LLC RO500AK-BN —Not covered

Barium

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Cadmium

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Chromium-3 (trivalent chromium)

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Chromium-6 (hexavalent chromium)

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Copper

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Cysts (Cryptosporidium, Giardia)

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Fluoride

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Free chlorine

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 42
iSpring Water Systems LLC RO500AK-BN —Not covered

Lead

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Nitrate (as N)

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

PFOA

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

PFOS

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Pharmaceuticals and emerging contaminants

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 401
iSpring Water Systems LLC RO500AK-BN —Not covered

Radium 226 and 228 combined

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Selenium

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Taste and odor

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 42
iSpring Water Systems LLC RO500AK-BN —Not covered

Total dissolved solids

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Turbidity and sediment

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 58
iSpring Water Systems LLC RO500AK-BN —Not covered

Virus

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF P231
iSpring Water Systems LLC RO500AK-BN —Not covered

Volatile organic compounds (VOC surrogate claim)

GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System ✓Certified NSF/ANSI 53
iSpring Water Systems LLC RO500AK-BN —Not covered

Cost of ownership

Table 3 · Five years, 700 gallons a year
CostGE Appliances GXRV40TBN Reverse Osmosis Drinking Water SystemiSpring Water Systems LLC RO500AK-BN
Purchase price$259.99Not published
Filters, 5 years$971.93Not published
Five-year total$1231.92Not published
Cost per gallon$0.28Not published

Assumes 700 gallons per year. [11]

Full specification comparison

Capacity and water use
SpecificationGE Appliances GXRV40TBN Reverse Osmosis Drinking Water SystemiSpring Water Systems LLC RO500AK-BN
TypeUnder-sink reverse osmosisUnder-sink reverse osmosis
Daily production12.2 GPDNot published
Minimum water pressure40 psiNot published
Maximum water pressure100 psiNot published
Fit and installation
SpecificationGE Appliances GXRV40TBN Reverse Osmosis Drinking Water SystemiSpring Water Systems LLC RO500AK-BN
Dimensions3.625 x 12.5 x 9.25 inNot published
InstallationDIY, easyNot published
Water compatibility and warranty
SpecificationGE Appliances GXRV40TBN Reverse Osmosis Drinking Water SystemiSpring Water Systems LLC RO500AK-BN
RemineralizationYesNot published
Warranty, parts1 yrNot published

Sources

  1. [1] IAPMO R&T. IAPMO R&T certificate WC-9859, NSF/ANSI 58-2022, GE Appliances. retrieved 2026-09-20
  2. [2] IAPMO R&T. IAPMO R&T certificate WC-11734, NSF/ANSI 53-2022, GE Appliances. retrieved 2026-09-20
  3. [3] IAPMO R&T. IAPMO R&T certificate WC-9892, NSF/ANSI 42-2022, GE Appliances. retrieved 2026-09-20
  4. [4] IAPMO R&T. IAPMO R&T certificate WC-11735, NSF/ANSI 401-2022, GE Appliances. retrieved 2026-09-20
  5. [5] IAPMO R&T. IAPMO R&T certificate WC-13808, NSF Protocol P231-2014, GE Appliances. retrieved 2026-09-20
  6. [6] IAPMO R&T. IAPMO R&T certificate WC-15030, CSA B483.1-2007 (R2017), GE Appliances. retrieved 2026-09-20
  7. [7] NSF International. NSF Official Listing, NSF/ANSI 58, GE Appliances GXRV40TBN. retrieved 2026-09-20
  8. [8] NSF International. NSF Official Listing, NSF/ANSI 42, GE Appliances GXRV40TBN. retrieved 2026-09-20
  9. [9] NSF International. NSF Official Listing, CSA B483.1, GE Appliances GXRV40TBN. retrieved 2026-09-20
  10. [10] GE Appliances. GE Reverse Osmosis 5 Stage Premium Water Filtration System with Faucet, GXRV40TBN. retrieved 2026-09-20
  11. [11] The Home Depot. GE Under Sink 5 Stage Premium Reverse Osmosis Water Filtration System GXRV40TBN. retrieved 2026-09-20
  12. [12] The Home Depot. GE Under Sink 5 Stage Premium Reverse Osmosis Water Filtration System GXRV40TBN, product photograph. retrieved 2026-09-21
  13. [13] The Home Depot. GE Reverse Osmosis Replacement Filter Set FQ18PN. retrieved 2026-09-20
  14. [14] The Home Depot. GE Reverse Osmosis Replacement Membrane FQ18MN. retrieved 2026-09-20
  15. [15] The Home Depot. GE Reverse Osmosis Under Sink Replacement Filter FQ18RT. retrieved 2026-09-20
  16. [16] The Home Depot. Model number as listed for GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System. retrieved 2026-09-23
  17. [17] retrieved 2026-09-21
  18. [18] retrieved 2026-09-21
  19. [19] retrieved 2026-09-21
  20. [20] The Home Depot. Model number as listed for iSpring Water Systems LLC RO500AK-BN. retrieved 2026-09-23
GE Appliances GXRV40TBN Reverse Osmosis Drinking Water System$249.00iSpring Water Systems LLC RO500AK-BN$752.85