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Woodbridge 7.5 GPM Condensing Gas Tankless Water Heater

Model WB-75-NG
4.2/5 from 340 ratings
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Btu
140000
Venting
Direct Vent
Fuel Type
Natural Gas
Tank Type
Tankless
Condensing
1
Energy Factor
0.96

Woodbridge 7.5 GPM Condensing Gas Tankless Water Heater Review

The Woodbridge 7.5 GPM Condensing Gas Tankless is a smaller-capacity variant of Woodbridge's 9.5 GPM tankless. Sized for 1-2 bathroom homes with sequential demand. Direct-to-consumer brand sold primarily through Amazon.

Specs: 160,000 BTU input, UEF 0.93 condensing, 7.5 GPM at a 35°F rise, stainless steel heat exchanger, PVC venting, WiFi connectivity. 12-year warranty on heat exchanger.

The Woodbridge positioning is value — about $900 unit versus $1,400-$1,800 for established competitors (Rinnai RL75iN, Navien NPE-180, Rheem RTGH-72) at the same capacity class. The trade-off is service network and brand history. Woodbridge is a relatively new entrant with parts and service handled through manufacturer customer service rather than dealer networks.

About $900 unit, $2,700 installed. The price advantage over major-brand equivalents is meaningful for the install scenario.

Right buyer: DIY-savvy homeowners or installations where the cost difference matters and the buyer is willing to manage service support independently. Wrong buyer: homeowners wanting traditional dealer-network service, anyone whose installer is unfamiliar with Woodbridge units. Most plumbers haven't worked on these — verify your installer's comfort with the brand before committing.

Pros
  • Condensing modulation (UEF 0.96) — recovers exhaust heat; 15–30% lower gas bill vs non-condensing tankless
  • UEF 0.96 — top-tier efficiency; qualifies for Inflation Reduction Act §25C residential credit
  • 10-year warranty — solid above-average coverage for this class
  • 7.5 GPM flow rate — sized for 2-bath simultaneous demand in warm-climate installs
Cons
  • Requires dedicated 140K BTU gas supply line — undersized gas piping is the leading cause of flow-rate shortfalls

Full Specifications

Brand
Woodbridge
Model Number
WB-75-NG
Btu
140000
Venting
Direct Vent
Fuel Type
Natural Gas
Tank Type
Tankless
Condensing
1
Energy Factor
0.96
Flow Rate Gpm
7.5
Warranty Years
10
Capacity Gallons
0

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