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Westinghouse Natural Gas Outdoor Review

Name: Westinghouse Natural Gas Outdoor
Brand: Westinghouse
SKU: B0F66NSS2D

7.5Very good · out of 10Rated from the listing's specs, no buyer reviews yet

Written from the listing's specs, not from our own use · How we rate

The Westinghouse Natural Gas Outdoor ticks most of the boxes we care about: an 8.1 GPM maximum flow, outdoor mounting that skips the flue and a ±1 °F temperature hold. It suits one shower plus the kitchen in a typical family morning, and its sibling listing, the Westinghouse 180,000 BTU Propane Outdoor, holds #4 in our outdoor propane tankless water heater ranking.

Variants of this model

These are sold as variants of one listing family. Each variant has its own page.

Westinghouse 180,000 BTU Propane Outdoor · 8.1GPM|Propane|Out · 5.5/10

Price$799.96Price on Sep 30, 2026 · may have changed

Check the price on Amazon ↗Affiliate link · price and stock on Amazon

Compare side by side ↗

Specifications

Brand	Westinghouse
Category	Gas tankless water heaters
Fuel	Natural gas
Stated mounting location	Outdoor
Stated maximum flow	8.1 GPM
Stated gas input	180,000 BTU/h
Stated voltage	120 V
Temperature hold	±1 °F, per the listing
Freeze protection	Stated in the listing
Stated warranty	5 years on the heat exchanger
ASIN	B0F66NSS2D

Full listing title: Westinghouse Tankless Water Heater Natural Gas Outdoor, CSA Certified

Listing evidence

Fuel	Natural Gas Full listing title
Stated mounting location	Outdoor Full listing title
Stated maximum flow	up to 8.1 GPM Listing text
Stated gas input	180,000 BTU Listing text
Stated voltage	120V Listing text

Updated October 2026

Exact listing, ASIN B0F66NSS2D

Rating from a published formula

Compared with its closest rivals

Two gas tankless heaters on natural gas too, with about the same flow, closest to it on our rating, each with a dated price.

Compare side by side ↗

Westinghouse Natural Gas Outdoor

7.5Very good · out of 10$799.96 Price on Sep 30, 2026 · may have changed

Stated: 8.1 GPM · 180,000 BTU/h · 120 V
Gas tankless water heaters

This product ↑

Rheem RTG 7.0 GPM Natural Gas Outdoor

7.6Very good · out of 10$819.08 Price on Sep 30, 2026 · may have changed

Stated: 7 GPM · 160,000 BTU/h
Gas tankless water heaters

See the review ↗

Rheem RTG 8.4 GPM Natural Gas Outdoor

7.7Very good · out of 10$964.10 Price on Sep 30, 2026 · may have changed

Stated: 8.4 GPM · 180,000 BTU/h
Gas tankless water heaters

See the review ↗

Up to 8.1 GPM from a 180,000 BTU burner

That's the maximum flow the listing states, and headline flows are usually quoted at a mild temperature rise. With January water coming in at 42 °F and a 105 °F shower, the rise is 63 °F and the real flow is lower; the maker's flow chart has that number. Counting 2 GPM per shower, as our calculator does, that's two showers and a kitchen tap, less when the water comes in cold.

What it has going for it

What changes in the morning shower rush

Mounts outside. No vent pipe through the roof or the rim joist: it hangs on an outside wall and breathes on its own. The listing states freeze protection, which typically needs power at the wall to work.

±1 °F hold. The burner adjusts as the flow changes, so the shower stays where you set it when somebody opens the kitchen tap. On paper, at least: that is the seller's claim.

Mild winters or hard freezes?

Mild winters: the Westinghouse Natural Gas Outdoor goes on an outside wall, which saves the vent pipe and keeps the closet free.

Hard freezes: the listing states freeze protection. It only works while the unit has power, so an outage on a frozen night is the risk to plan for; drain it if the power stays off.

Great for you if…

You run one shower and the kitchen tap at once, rarely more
There is no good vent route inside your house
A shower that suddenly runs cold drives you mad

Skip it if…

Your winters freeze hard and the outside wall has no power for freeze protection
You'd rather wait for buyer reviews: none are captured for this listing yet
You want the high-efficiency kind: the listing doesn't call it condensing

What Westinghouse promises

The seller states, word for word, in the Westinghouse Natural Gas Outdoor listing:

Helps reduce cold bursts and sudden temperature fluctuations during everyday household use.
Compatible with standard 3/4" NPT residential plumbing systems.

Their words and their figures, not our measurements. How steady your shower stays when someone opens the kitchen tap, and what's left of that flow in January, no listing can tell you.

Westinghouse Natural Gas Outdoor, view 3

Gas, mounting and what's in the box

What the Westinghouse Natural Gas Outdoor listing names:

Up to 8.1 GPM
180,000 BTU/h input
Natural gas
Outdoor mounting
±1 °F temperature hold claimed
Freeze protection named
CSA, ETL or UL mark named

Warranty & support: 5-year warranty on the heat exchanger, as stated in the listing · CSA, ETL or UL certification named in the listing.

That is the maker's promise, not ours. Keep the invoice, register the Westinghouse Natural Gas Outdoor if the maker asks, and read the install conditions: many tankless warranties need a licensed install and regular flushing.

For the Westinghouse Natural Gas Outdoor, the installation manual settles the venting, the gas line and the clearances.

Westinghouse Natural Gas Outdoor, view 4

Price and cost per GPM of stated flow

$799.96 Price on Sep 30, 2026 · may have changed

At the price on Sep 30, 2026, each GPM of stated maximum flow works out at about $98.76 (price ÷ stated GPM, our arithmetic). That puts it around the middle of the 32 outdoor tankless heaters we have a price and a stated flow for.

Outside mounting saves the vent pipe; the gas line, the water lines and a weatherproof outlet are still a separate bill.

The button opens the exact listing (ASIN B0F66NSS2D), where today's price, stock and seller apply. Sizes and variants of the same family often sit at different prices.

Westinghouse Natural Gas Outdoor, view 5

A better fit for your house?

Hard freezes where you live? The Ranein 190,000 BTU Natural Gas Indoor (7.9/10) is an indoor unit, out of the frost.

Only one bathroom? The Westinghouse 120,000 BTU Propane Outdoor (7.6/10) states up to 5.1 GPM.

Our take

The verdict

Our favourite thing about the Westinghouse Natural Gas Outdoor is an 8.1 GPM maximum flow, closely followed by outdoor mounting that skips the flue. No buyer reviews yet, so the Westinghouse Natural Gas Outdoor has to win you over on paper. The catch with this Westinghouse outdoor tankless heater: the headline GPM is a mild-weather figure, so leave yourself margin for January. We'd pick it if you run one shower and the kitchen tap at once, rarely more; otherwise, put it next to the Ranein 130,000 BTU Propane Outdoor first.

Check the price on Amazon ↗Affiliate link · price and stock on AmazonAll gas tankless water heaters →

Living with it

Install day

It goes on an outside wall, with gas, water and power run to it. Plan the gas line for 180,000 BTU/h; a licensed pro handles it, and often a permit.

The first shower

Hot water arrives after the cold already in the pipes, then stays (within ±1 °F, per the listing). A trickle from a bathroom tap may not light the burner; open it a bit more.

The first winter

January water comes in colder, so the same unit gives fewer GPM. Stagger the showers if you sized it tight.

Once a year

Flush the heat exchanger with a pump and a descaler (the service valves make it an hour's job), and clear leaves and wasp nests from the cabinet vents. Our flushing and descaling guide has the checklist.

The one thing we'd check first

Before the Westinghouse Natural Gas Outdoor ships, check your gas line: 180,000 BTU/h is a lot of gas at once, so ask your plumber whether the existing line can feed it.

Before you buy

Your winter flow

8.1 GPM is the headline. In a northern January the water comes in near 42 °F, so a 105 °F shower needs a 63 °F rise and the real flow drops. Our flow-rate calculator runs the numbers for your house.

The outside wall

Pick a wall away from windows and doors, with power for the controls and the freeze protection the listing mentions. Our indoor vs outdoor guide compares the two installs.

The warranty terms

5 years are stated on the heat exchanger. Read what it requires: a licensed install, the gas type and regular flushing are the usual conditions.

Flushing

Hard water scales the heat exchanger. Service valves on the water lines turn the yearly flush into an hour with a bucket and a pump; our flushing and descaling guide shows the routine.

How it compares

How the Westinghouse Natural Gas Outdoor stacks up against the closest alternative, the Ranein 130,000 BTU Propane Outdoor.

Criterion	Westinghouse Natural Gas Outdoor	Ranein 130,000 BTU Propane Outdoor
Our rating	7.5/10	7.5/10
Max flow	8.1 GPM	5.3 GPM
Gas input	180,000 BTU/h	130,000 BTU/h
Temperature hold	±1 °F stated	Not stated
Warranty	5 years (heat exchanger)	Not stated
Buyer reviews	None captured	710 · 4.2/5

Both score 7.5/10. The Westinghouse Natural Gas Outdoor brings more flow (8.1 GPM) and a bigger burner (180,000 BTU/h), so it has the edge on paper.

Compare side by side ↗See the Ranein 130,000 BTU Propane Outdoor review →

The score in detail

How we rated it

Spec-based rating on a 4.5–8.5 scale: 4.5 + average of the 4 criteria × 0.4. Capped at 8.5 because no customer evidence is included.

Key specifications

8 / 10

Build, warranty & certifications

7 / 10

Listing documentation

7 / 10

Fit & compatibility

8 / 10

This product has no captured buyer-review record yet, so its rating comes from the documented listing alone: four criteria scored out of 10 (key specifications; build, warranty and certifications; listing documentation; fit and compatibility), placed on a 4.5–8.5 scale. Read the full methodology.

Read the methodology →

Frequently asked questions

Is the Westinghouse Natural Gas Outdoor any good?

We rate it 7.5/10 (very good). The rating comes from its documented listing alone, as no customer-review record is captured yet.

How much hot water can the Westinghouse Natural Gas Outdoor deliver?

The listing states a maximum flow of 8.1 GPM and a gas input of 180,000 BTU/h on 120 V. The headline flow is a mild-weather number: with cold winter water coming in, the same unit gives you less. Read the maker's flow chart at your winter rise, or let our flow-rate calculator do the sums.

Can the Westinghouse Natural Gas Outdoor be installed indoors?

The listing says outdoor mounting. It only goes inside if the maker lists that exact model for indoor use, with the venting it specifies; a licensed gas installer confirms the spot under your local code.

What do you get with the Westinghouse Natural Gas Outdoor?

Its listing states up to 8.1 GPM, outdoor mounting that skips the flue, temperature held within ±1 °F and a 5-year heat exchanger warranty. These are the seller's figures, not our measurements: how steady the temperature is in your shower and how it copes with your winter water can't be read from a listing.

What should I check before ordering the Westinghouse Natural Gas Outdoor?

Your winter flow: 8.1 GPM is the headline. In a northern January the water comes in near 42 °F, so a 105 °F shower needs a 63 °F rise and the real flow drops. Our flow-rate calculator runs the numbers for your house. The outside wall: pick a wall away from windows and doors, with power for the controls and the freeze protection the listing mentions. Our indoor vs outdoor guide compares the two installs. The warranty terms: 5 years are stated on the heat exchanger. Read what it requires: a licensed install, the gas type and regular flushing are the usual conditions. Flushing: hard water scales the heat exchanger. Service valves on the water lines turn the yearly flush into an hour with a bucket and a pump; our flushing and descaling guide shows the routine.

Where can I buy the Westinghouse Natural Gas Outdoor?

We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.

Have you used the Westinghouse Natural Gas Outdoor yourselves?

No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula.

Gas tankless water heaters ↗All Westinghouse products Comparison tool All product reviews