WaterClue is reader-supported. As an Amazon Associate we earn from qualifying purchases. Amazon prices and product images are sourced live from the Amazon Product Advertising API and may not reflect current Amazon listings — confirm price and availability at Amazon before purchase. Full affiliate disclosure.

Size Calculator Best-Of

Navien 40-Gallon Water Heaters

Navien filters Active: 40 Gallon · 4 categories
All
All Navien
Type
Tankless Tank / Storage Heat Pump / Hybrid Solar Indirect Point-of-Use RV / Mobile Commercial
Fuel
Gas Electric Propane
Capacity
6 Gallon 10 Gallon 20 Gallon 30 Gallon 40 Gallon 50 Gallon 75 Gallon 80 Gallon 100 Gallon
Features
Energy Star Condensing
Showing 0–0 of 0 Navien 40 gallon models

No Navien 40 gallon water heaters in our catalog

Navien doesn't currently ship any 40-gallon water heaters we track. Try one of the alternatives below.

All Navien water heaters All 40 Gallon brands

Navien 40-Gallon Water Heaters: buyer's guide

Navien doesn't currently ship any 40-gallon water heaters in the lineup we track. If you're shopping for 40-gallon water heaters, see the full 40 Gallon category for cross-brand options.

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.

Other 40 Gallon water heaters brands

If you're cross-shopping 40 gallon water heaters beyond Navien, the following brands also ship in this category:

About 40-Gallon Water Heaters water heaters

The 40-gallon water heater is the volume size for 2–3 person households — second only to 50-gallon in residential install volume. The 40G saves $30–$80 upfront vs the 50G and fits the same standard 22"-diameter footprint with slightly less height. For 1-bathroom homes and smaller households, 40G is often the right sizing.

Gas 40-gallon