Navien Gas Water Heaters
Navien filters
Navien NPE-210A2 Premium Tankless Water Heater
Navien NPE-180A2 Premium Tankless Water Heater
Navien NHB-110 Combi Boiler Water Heater
Navien NFC-250 Fire Tube Combi Boiler with Tankless Water Heater
Navien NPE-S2 Standard Tankless Water Heater
Navien NPE-180S2 Standard Tankless Water Heater
Navien NPE-240S2 Standard Tankless Water Heater
Navien NCB-240E Combi Boiler with Tankless Water Heater
Navien NPE-150S2 Standard Condensing Tankless Water Heater
Navien NPE-240A Premium Condensing Tankless Water Heater (Legacy)
Navien NPN-199E Non-Condensing Tankless Water Heater
Navien NCB-240 Combi Boiler with Tankless Water Heater
Navien NPE-210A Premium Condensing Tankless Water Heater (Legacy)
Navien NHB-150 Condensing Heating Boiler
Navien NPE-180A Premium Condensing Tankless Water Heater (Legacy)
Navien NCB-190 Combi Boiler with Tankless Water Heater
Navien NCB-250 Combi Boiler with Tankless Water Heater
Navien NCB-210E Combi Boiler with Tankless Water Heater
Navien NCB-180E Combi Boiler with Tankless Water Heater
Navien NHB-80 Condensing Heating Boiler
Navien NCB-300 Combi Boiler with Tankless Water Heater
Navien NPN-180U Non-Condensing Tankless Water Heater
Navien Gas Water Heaters: buyer's guide
Navien offers 23 gas water heaters models in the lineup we track. This page is the Navien-specific cut of the broader Gas Water Heaters water heaters category — same product class, narrowed to the Navien catalog only.
About Navien
<p>If you've been researching water heaters, Navien has almost certainly come up. Their catalog spans the full price tier from value picks to flagship models, and their warranty terms are among the most generous in the category. This page is built to help you navigate the Navien water heaters lineup specifically — which model belongs in which use case, where Navien wins against its closest competitors, and where you should consider an alternative.</p> <h2 id="brand-overview">About Navien in water heaters</h2> <p>On warranty length, build quality, and the depth of the dealer/service network,...
For the complete Navien lineup across all sub-types and capacities, see the Navien Water Heaters hub.
Navien Gas Water Heaters models we track
- Navien NPE-240A2 Premium Condensing Tankless Water Heater (NPE-240A2) — Navien's flagship 11.2 GPM condensing tankless. 0.97 UEF, built-in buffer tank for cold-water sandwich elimination.
- Navien NPE-210A2 Premium Tankless Water Heater (NPE-210A2) — 10.1 GPM premium condensing tankless — Navien's mid-flagship.
- Navien NPE-180A2 Premium Tankless Water Heater (NPE-180A2) — 8.4 GPM premium condensing — Navien's 2–3 person household pick.
- Navien NHB-110 Combi Boiler Water Heater (NHB-110) — Combination boiler — provides both domestic hot water and hydronic heating from one unit.
- Navien NFC-250 Fire Tube Combi Boiler with Tankless Water Heater (NFC-250) — NFC-250 fire-tube combi — Navien's premium combi using a fire-tube heat exchanger (vs water-tube on NCB). Smoother modulation, longer heat-exchanger life, highe...
- Navien NPE-S2 Standard Tankless Water Heater (NPE-180S2) — Standard-tier Navien condensing tankless without the buffer tank feature.
- Navien NPE-180S2 Standard Tankless Water Heater (NPE-180S2) — 8.4 GPM NPE-S2 condensing tankless for mid-range homes.
- Navien NPE-240S2 Standard Tankless Water Heater (NPE-240S2) — NPE-S2 standard — same flow as NPE-A2 but without the buffer tank.
Other Gas water heaters brands
If you're cross-shopping gas water heaters beyond Navien, the following brands also ship in this category:
About Gas Water Heaters water heaters
Natural gas water heaters dominate US residential water heating where natural gas service is available — roughly 49% of US homes have gas water heaters. They split into tank (40/50/75/80-gallon storage with gas burner) and tankless (on-demand condensing) sub-types, with venting variations (atmospheric chimney, power-vent PVC, direct-vent sealed combustion) that determine which install scenarios fit.
- Operating cost: natural gas is consistently the cheapest residential water heater fuel by per-BTU pricing in most US markets — typically 50–60% of equivalent electric resistance cost
- Recovery speed: a 40,000 BTU gas burner delivers ~40 GPH at 90°F rise — tw...
For the complete gas buyer's guide (all brands, full comparison framework), see the Gas Water Heaters category hub.
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