Whole house gas tankless
Rinnai V53DeN Natural Gas Specifications
Researched from the DOE test procedures, NFPA 54 and NEC code tables, and manufacturer specifications. Updated .
Quick answer
This page collects what is actually published about the Rinnai V53DeN Natural Gas and shows what those figures produce, computed rather than transcribed. Anything the listing does not publish is not filled in with an estimate.
One caution about the flow figure. The listing title states 5.3 gallons per minute with no temperature rise attached. Flow and rise trade against each other directly, so a flow figure without a rise is not a specification. The table below shows what the published input rating actually produces across the range.
Published specifications
Everything here is taken from the listing or the manufacturer, and nothing is inferred.
| Specification | Value |
|---|---|
| Fuel | Natural gas |
| Max Flow Gpm | 5.3 |
| Condensing | No |
| Mounting | Indoor |
Published standard Source: Manufacturer listing data. A specification not listed here is one this listing does not publish. Check the installation manual for the full data plate.
Why there is no performance table on this page
This listing does not publish an input rating in BTU per hour or in kilowatts, and without one there is nothing to compute a flow rate or a recovery rate from. Estimating it from the price or from the physical size would produce a confident number with nothing behind it, so this page does not.
The installation manual for this model publishes the input rating on its data plate. Once you have that figure, the recovery rate calculator and the tankless sizing calculator will do the rest.
How it sits against the rest of its category
There is a full review of the Rinnai V53DeN Natural Gas covering who it suits and who should not buy it.
Other whole house gas tankless in this catalog: Rinnai RE140iN Natural Gas, Rinnai RE140iP Propane, Rinnai RX130iN Condensing, Rinnai RX160iN Condensing.
Compare them on input rating and on the figures the manufacturer actually publishes rather than on the headline number in the listing title, which in this category is frequently a maximum measured under conditions the listing never states.
Other whole house gas tankless
Rinnai RE140iN Natural Gas
$795.69A non-condensing indoor unit that sits between the entry and the condensing line, for a house where category III stainless venting is already in place.
Best for: Replacing an existing non-condensing tankless
Check price on Amazon
Rinnai RE140iP Propane
$795.69The propane sibling of the RE140iN. Buying the wrong fuel version is the most common ordering mistake on a tankless unit, because the model numbers differ by one letter.
Best for: Propane properties replacing a non-condensing unit
Check price on Amazon
Rinnai RX130iN Condensing
$1,264.20A condensing unit with Rinnai sensing electronics, which matters most for the cold water sandwich a tankless produces when a tap is cycled on and off.
Best for: Households that run short, repeated draws
Check price on AmazonFrequently asked questions
- What are the specifications of the Rinnai V53DeN Natural Gas?
- The listing publishes fuel, max flow gpm, condensing, mounting and related figures, shown in full in the table on this page. Anything not shown is something the listing does not publish, and this page does not estimate it.
- Does the Rinnai V53DeN Natural Gas really deliver 5.3 gallons per minute?
- At some temperature rise, yes, and the listing does not say which one. Flow and rise trade against each other directly: the same unit that makes a given flow at a 35 F rise makes roughly half of it at a 70 F rise. Take the flow curve from the installation manual and read it at your own inlet temperature rather than trusting the headline figure.
- Is this page based on hands-on testing?
- No, and we never claim otherwise. Everything here is compiled from the manufacturer listing, published specifications and the energy relations that turn those specifications into flow and recovery figures. We do not test products in person. Where a figure is not published, this page says so rather than estimating it.
- Are the prices on this page current?
- They come from verified catalog data at the time the page was built, and prices in this category move often. Treat any price shown as a guide and check the listing itself before deciding. Availability moves even faster than price does on water heater accessories in particular.
A water heater is a pressure vessel. The temperature and pressure relief valve is the one component on it that is never capped, plugged or removed, and a valve that will not open when you lift the test lever has failed and needs replacing rather than ignoring. If the valve weeps after the heater runs, that is thermal expansion in a closed system and the answer is an expansion tank or a pressure reducing valve, never a cap.