Rheem RTG-70DVLN-3
The Rheem RTG-70DVLN-3 is the indoor, direct-vent member of Rheem's mid-efficiency (non-condensing) RTG line — 160,000 BTU/h and 7.0 GPM on natural gas at 0.82 UEF. The 'DV' denotes direct vent and 'LN' low-NOx. It's positioned as the value indoor gas tankless: more affordable than the condensing RTGH/IKONIC units, with the same Hot Start Programming that keeps the unit primed to avoid cold-water bursts on back-to-back use.
As a non-condensing unit it uses conventional (category III stainless or concentric) venting rather than PVC, and it's compact — about 14 in wide with tight side clearances for a small-space install. It modulates across its BTU range, includes LeakGuard leak detection on Wi-Fi models, and delivers a solid 7.0 GPM for a small-to-medium home. Its indoor rating is the trade-off: the direct-vent install is more involved than its outdoor XLN sibling, which is reflected in owner feedback.
Key Features
Best Use Cases
Our Verdict
The RTG-70DVLN-3 is a sensible, budget-conscious indoor gas tankless — 7.0 GPM covers a small-to-medium home, and Hot Start smooths out the classic tankless temperature dips. Its owner rating runs lower than the outdoor XLN version, and the pattern in feedback points to installation and venting complexity plus the Code 11 ignition fault that recurs across Rheem's gas line, rather than a flaw in the core unit. Our take: a fair-value indoor choice if you have (or are paying for) a proper direct-vent install and don't need condensing efficiency — but insist on correct gas-line sizing and venting, since that's where owner frustration concentrates. If your install can go outdoors, the RTG-70XLN-3 skips venting entirely and tends to leave owners happier.
What owners report
Themes summarized from verified-purchase reviews across major retailers (3.9★ average, 97 ratings). These are aggregated owner opinions — not our own bench testing.
Solid 7.0 GPM value for a non-condensing indoor unit, with Hot Start Programming smoothing out back-to-back hot-water use.
Compact chassis with tight side clearances suits small mechanical spaces.
The indoor direct-vent install is more involved than the outdoor version — venting and gas-line sizing are recurring pain points, and its owner rating trails the XLN sibling.
Code 11 (ignition/flame failure) is the most frequently reported Rheem gas fault; owners often trace it to gas supply or venting.
Non-condensing efficiency (0.82 UEF) means higher gas use than a condensing RTGH, and flow drops in cold climates.
Rheem RTG-70DVLN-3 FAQ
Why does this model rate lower than the outdoor RTG-70XLN-3?+
The core unit is essentially the same; the difference is installation. The indoor DVLN requires direct venting, and owner frustration concentrates on venting and gas-line sizing rather than the heater itself. A correct professional install addresses most of it — but if you can mount outdoors, the XLN skips venting entirely.
What is Code 11?+
Code 11 is a no-ignition / flame-failure fault and the most common Rheem gas error. It usually points to gas supply (line sizing, pressure) or venting. It often clears with a reset, but repeated Code 11s mean the gas or vent setup needs checking.
Is it condensing?+
No — it's non-condensing at 0.82 UEF, which keeps the price down and uses conventional stainless venting rather than PVC. A condensing RTGH-84DVLN is more efficient but costs more and needs a condensate drain.
How much hot water does 7.0 GPM give me?+
Up to 7.0 GPM in warm climates — two showers plus a sink. In cold climates usable flow falls toward 3.5–4.5 GPM, closer to two fixtures. It suits a small-to-medium home.
What's the warranty?+
12 years on the heat exchanger — 15 years if you register within 90 days — plus 5 years on parts and 1 year of labor.
Price range from leading retailers
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