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IWG Lavatory High Efficiency Water Heater, 420 W

Part # 09270420-001=3F
Mfr. Part # 09-270420-001
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The IWG-HE "High Efficiency" Water Heater Series is a family of lavatory heaters featuring innovative new designs intended to replace existing lavatory heaters on aircraft. The HE Heater uses a patented "flow through" heater concept and a thermal mixing valve to achieve a much greater heating efficiency at a reduced size and weight. It also achieves reduction in scaling and bacterial build-up due to the optimized heating process, higher in-chamber temperatures and anti-biofilm construction.


Improved materials and methods over existing heaters, eliminating common corrosion issues



  • Convection pumping and thermal mixing valve achieve a much greater heating efficiency at a reduced size and weight
  • Eliminates bacteria growth and common corrosion issues
  • Reliable and will save on operational costs due to weight savings and reduced maintenance efforts


Aircraft Applicability:

737-600 Series
737-700 Series
737-700C Series
737-800 Series
737-900 Series
737-900 ER Series
747-400 Series
767-200 Series
767-300 Series
767-300 ER Series
767-400 ER Series
777-200 Series
777-200 LR Series
777-300 Series
777-300 ER Series
737 MAX 8
737 MAX 9


Item currently out of stock
Cage Code
Country of origin
United States 
Schedule B
Dimensions (L x W x H)
8.5 x 8.5 x 14.5 IN
Total Shelf Life (days)
No Information
Hazmat Code
Package Weight
.415 LB
FAA Approval Code
8130-3 Eligible
Item Replacement History

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