Quick Answer: The Noritz EZ111DV-NG and Rinnai Sensei RX199iN are now closely matched flagships — both rated 0.98 UEF at roughly 11.1 GPM on a warm inlet, so efficiency and flow no longer separate them the way they once did. The real gap is warranty and availability: Noritz backs the EZ111DV with a 25-year heat-exchanger warranty, a full decade longer than Rinnai’s 15-year term, while Rinnai is the far easier find at a local Home Depot with wider installer familiarity. Street pricing lands close once Noritz’s steep list-to-street discount is applied — roughly $1,530-$1,770 for the Rinnai versus $1,585-$1,875 for the Noritz off a ~$3,443 list.
Noritz and Rinnai rarely got cross-shopped head-to-head in past years because Rinnai’s Sensei line simply had the better efficiency number. That gap has closed. Noritz’s 2026-refreshed EZ Series pro line now matches Rinnai’s 0.98 UEF at the same 11.1 GPM class, which means the decision between these two flagships now comes down to warranty length, install cost, and where you can actually buy one — not raw spec-sheet performance.
Noritz vs Rinnai at a glance
| Factor | Noritz (EZ111DV-NG) | Rinnai (Sensei RX199iN) |
|---|---|---|
| Max flow (warm inlet) | 11.1 GPM | 11.1 GPM |
| BTU input | 199,900 BTU | 199,000 BTU |
| Efficiency (UEF) | 0.98 | 0.98 |
| Heat-exchanger warranty | 25 years (5-yr parts / 1-yr labor) | 15 years |
| Street price | ~$1,585-$1,875 (off ~$3,443 list) | ~$1,530-$1,770 |
| Venting | PVC/CPVC condensing | PVC/CPVC condensing |
| Retail availability | Plumbing wholesalers, Amazon | Home Depot, wide installer familiarity |
By the numbers
- 0.98 UEF on both the Noritz EZ111DV-NG and Rinnai RX199iN — the two brands’ flagships are now tied on paper efficiency, closing a gap that used to favor Rinnai outright. — Noritz / Rinnai spec sheets
- 25-year heat-exchanger warranty (Noritz EZ111DV-NG) vs 15-year (Rinnai RX199iN) — a full decade of extra coverage on the Noritz, the clearest differentiator between the two once efficiency ties. — Noritz / Rinnai published warranty terms
- ~$3,443 list discounted to roughly $1,585-$1,875 street on the Noritz EZ111DV-NG — a steep list-to-street markdown pattern that also shows up on Noritz’s EZTR50 bundle, so always compare current street price, not the sticker. — retailer listings, September 2026
- 199,900 BTU (Noritz) vs 199,000 BTU (Rinnai) — functionally identical output class; neither brand has a real BTU advantage at the flagship tier. — Noritz / Rinnai spec sheets
Flagship vs flagship: EZ111DV-NG vs RX199iN
The Noritz EZ111DV-NG and Rinnai Sensei RX199iN sit in the same 199,000+ BTU, 11.1 GPM condensing class, and as of Noritz’s 2026 EZ Series refresh they now carry the same 0.98 UEF rating too. That’s a real shift — Noritz’s older NRC1111-DV platform tops out at 0.91 UEF, a genuine step below Rinnai’s Sensei line, but the new EZ-series pro unit closes that gap entirely. Neither brand has a flow or efficiency edge at this tier anymore.
The real differentiator: warranty length
With efficiency tied, warranty is where these two flagships actually separate. Noritz backs the EZ111DV-NG’s heat exchanger for 25 years, plus 5 years on parts and 1 year of labor coverage. Rinnai’s RX199iN carries a 15-year heat-exchanger warranty — still strong for the category, but 10 years shorter than Noritz’s term. If long-term coverage is the deciding factor and you’re planning to stay in the house, Noritz’s number is simply better on paper.
Price and availability tell a different story
Rinnai’s RX199iN prices consistently in the $1,530-$1,770 range across major supply retailers, with relatively little listing-to-listing spread. Noritz’s EZ111DV-NG lists near $3,443 but is commonly discounted to roughly $1,585-$1,875 — close to Rinnai once the markdown applies, though with more variance depending on the retailer. Availability matters more than the spec sheet here: Rinnai sells heavily through Home Depot and other big-box retail, so installers know the unit and parts are easy to source locally. Noritz leans on plumbing wholesalers and Amazon instead, which our own Noritz lineup guide already flags as a tradeoff — you may wait longer for parts or a service call in some markets.
Which should you buy?
- Want the longest warranty at a matched efficiency and flow rating: Buy Noritz EZ111DV-NG — the 25-year heat-exchanger term is the clearest number in its favor.
- Want the easier local buy and the most installer-familiar brand: Buy Rinnai RX199iN — especially if you’re relying on a local plumber who already stocks Rinnai parts.
- Budget matters more than warranty length: Noritz’s older NRC1111-DV trades the 25-year term and 0.98 UEF for a lower 0.91 UEF rating, often at a lower price than either flagship here.
- Still cross-shopping the other major gas brands? See our Rinnai vs Rheem and Rinnai vs Navien comparisons for how the RX199iN stacks up against the rest of the field.
The bottom line
Noritz and Rinnai’s flagships used to be an easy call in Rinnai’s favor on efficiency alone — that’s no longer true. The EZ111DV-NG and RX199iN now match on UEF and GPM, which pushes the real decision onto warranty length and where you can actually buy and service the unit. Pick Noritz for the longer 25-year warranty; pick Rinnai if easy retail availability and installer familiarity matter more to you than an extra decade of heat-exchanger coverage. Whichever you choose, size it to your household’s peak GPM and winter inlet temperature first — see our sizing guide — and confirm your vent run against the manufacturer’s equivalent-length table in our venting guide before you buy.
Rinnai Sensei RX199iN Condensing Gas Tankless
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