Product images: Amazon listings

Novieex 120,000 BTU Propane Outdoor Review

Name: Novieex 120,000 BTU Propane Outdoor
Brand: Novieex
SKU: B0H1RLDYLB

4.1Fair · out of 10#5 of 5 in our Outdoor Propane Tankless Water Heaters ranking

Written from the listing and 20 buyer reviews, not from our own use · How we rate

The Novieex 120,000 BTU Propane Outdoor packs a 5.3 GPM maximum flow, outdoor mounting that skips the flue and a ±1 °F temperature hold into one outdoor tankless heater. It earned a spot in our top 5 outdoor propane tankless water heaters, and it's built for a cabin or a barn on propane.

Variants of this model

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

Novieex 100,000 BTU Propane Indoor · Gray / Propane|Indoor|4.3GPM · 7.2/10

Price$499.99Price 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	Novieex
Category	Gas tankless water heaters
Fuel	Propane
Stated mounting location	Outdoor
Stated maximum flow	5.3 GPM
Stated gas input	120,000 BTU/h
Stated voltage	110 V
Temperature range	95 to 149 °F
Temperature hold	±1 °F, per the listing
Minimum activation flow	0.3 GPM
Freeze protection	Stated in the listing
Water pressure	From 2.9 PSI
Stated warranty	1 years
Buyer reviews	20 · 5.0/5
ASIN	B0H1RLDYLB

Full listing title: Novieex Propane Tankless Water Heater Outdoor, Max 5.3 GPM, 120,000 BTU

Listing evidence

Fuel	Propane Full listing title
Stated mounting location	Outdoor Full listing title
Stated maximum flow	5.3 GPM Full listing title
Stated gas input	120,000 BTU Full listing title
Stated voltage	110V Listing text

Updated October 2026

Exact listing, ASIN B0H1RLDYLB

Rating from a published formula

Compared with its closest rivals

The two picks next to it in our outdoor propane tankless water heaters ranking, with their rating and a dated price.

Compare side by side ↗

Novieex 120,000 BTU Propane Outdoor

4.1Fair · out of 10$499.99 Price on Sep 30, 2026 · may have changed

Stated: 5.3 GPM · 120,000 BTU/h · 110 V
20 buyer reviews
Gas tankless water heaters

This product ↑

Westinghouse 180,000 BTU Propane Outdoor

5.5Fair · out of 10$799.98 Price on Sep 30, 2026 · may have changed

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

See the review ↗

APUS 190,000 BTU Propane Outdoor

6.9Good · out of 10$629.99 Price on Sep 30, 2026 · may have changed

Stated: 8.1 GPM · 190,000 BTU/h · 120 V
102 buyer reviews
Gas tankless water heaters

See the review ↗

Up to 5.3 GPM from a 120,000 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. Our calculator counts a shower at 2 GPM, so on paper that's one shower and a sink at a time, maybe two showers where the water comes in warm.

Why it made our list

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: an outside wall is the easy spot. No vent through the roof or the rim joist, no combustion air to plan inside the house.

Hard freezes: freeze protection is stated, and it runs on electricity. A long outage in January is when you drain it, before the heat exchanger splits.

Great for you if…

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 want a long review record: only 20 buyer reviews so far
You simply want our top pick: that's the FOGATTI Outdoor Propane Tankless (9.1/10)

What Novieex promises

The seller states, word for word, in the Novieex 120,000 BTU Propane Outdoor listing:

No indoor venting required—simply mount it on an exterior wall and connect to standard 3/4" NPT water lines and a propane supply.
This outdoor propane heater features 6 protections: 1 Flame-out (auto gas shutoff).
High-efficiency copper heat exchanger with 6-star energy rating.
Winter mode auto-boosts burner when inlet water drops below 41°F (5°C).
When ambient temperature falls below 41°F, or if the heater will be out of service long-term, drain all water trapped within the unit to avoid damage.

That's the seller talking, not us. No listing tells you how it copes with 42 °F water at 6:45 in the morning.

Novieex 120,000 BTU Propane Outdoor, view 3

Gas, mounting and what's in the box

What the Novieex 120,000 BTU Propane Outdoor listing names:

Up to 5.3 GPM
120,000 BTU/h input
Propane
Outdoor mounting
Starts from 2.9 PSI
Switches on at 0.3 GPM
±1 °F temperature hold claimed
95 to 149 °F setpoint
Freeze protection named

Warranty & support: 1-year warranty, as stated in the listing.

That is the maker's promise, not ours. Keep the invoice, register the Novieex 120,000 BTU Propane Outdoor if the maker asks, and read the install conditions: many tankless warranties need a licensed install and regular flushing.

The installation manual has the last word on venting, gas line and clearances; your installer reads it before you order.

Novieex 120,000 BTU Propane Outdoor, view 4

Price and cost per GPM of stated flow

$499.99 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 $94.34 (price ÷ stated GPM, our arithmetic). That puts it in the cheaper third 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 B0H1RLDYLB), where today's price, stock and seller apply. Sizes and variants of the same family often sit at different prices.

Novieex 120,000 BTU Propane Outdoor, view 5

A better fit for your house?

Two showers and the dishwasher at once? The APUS 190,000 BTU Propane Outdoor (6.9/10) states up to 8.1 GPM.

Hard freezes where you live? The ThermoMate CZ422LP Propane Indoor (7.8/10) is an indoor unit, out of the frost.

Want the high-efficiency kind? The ThermoMate Condensing Propane (7.6/10) is a condensing unit rated 0.86 UEF, per its listing.

Our take

The verdict

Our favourite thing about the Novieex 120,000 BTU Propane Outdoor is a 5.3 GPM maximum flow, closely followed by outdoor mounting that skips the flue. Only 20 buyers have rated it so far (5.0/5), so treat the score as an early read. Where it falls short: the FOGATTI Outdoor Propane Tankless sitting above it at 9.1/10. We'd pick it if there is no good vent route inside your house; otherwise, put it next to the Westinghouse 180,000 BTU Propane Outdoor first.

Check the price on Amazon ↗Affiliate link · price and stock on AmazonSee the outdoor propane tankless water heaters ranking →

Living with it

Install day

It goes on an outside wall, with gas, water and power run to it. Plan the gas line for 120,000 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). It switches on at 0.3 GPM, so a trickle from a bathroom tap may not light it.

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.

What buyers say

Buyers give it 5.0/5, an excellent record, well above this ranking's 4.3 average. Only 20 reviews so far, and our formula damps averages built on fewer than 50.

The numbers

Buyer rating: 5.0/5
Reviews: 20
This ranking's average: 4.3/5

The one thing we'd check first

Before the Novieex 120,000 BTU Propane Outdoor ships, check your gas line: 120,000 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

5.3 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

1 years are stated. 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 Novieex 120,000 BTU Propane Outdoor stacks up against the closest alternative in our ranking, the Westinghouse 180,000 BTU Propane Outdoor.

Criterion	Novieex 120,000 BTU Propane Outdoor	Westinghouse 180,000 BTU Propane Outdoor
Our rating	4.1/10	5.5/10
Max flow	5.3 GPM	8.1 GPM
Gas input	120,000 BTU/h	180,000 BTU/h
Warranty	1 years	5 years (heat exchanger)
Buyer reviews	20 · 5.0/5	34 · 4.3/5

Pick the Westinghouse 180,000 BTU Propane Outdoor if you want our higher-rated option (5.5/10), with more flow (8.1 GPM) and a bigger burner (180,000 BTU/h); stay with the Novieex 120,000 BTU Propane Outdoor for a higher buyer rating (5.0/5).

Compare side by side ↗See the Westinghouse 180,000 BTU Propane Outdoor review →

The score in detail

How we rated it

Our score: 4.1/10

Buyer rating (45%)

18.0 / 45

5.0/5 average, confidence-damped (20 reviews < 50)

Review volume (35%)

12.5 / 35

20 buyer reviews

Documented specifications (20%)

10.0 / 20

50/100 listing documentation score

Our rating is an evidence index on a 0–10 scale. It is not a buyer star rating, and we have not used the product ourselves.

Buyer rating (45%): the captured average shown on this variant's own listing page (not shared with the other Novieex variants), damped when there are fewer than 50 reviews.
Review volume (35%): more reviews mean more reliable evidence, on a logarithmic scale up to 5,000 reviews.
Documented specifications (20%): how completely the exact listing documents the attributes that matter.

Our editors then look at how it compares with the other heaters we rate. A commission is never an input to the rating. Read the full methodology.

Read the methodology →

Frequently asked questions

Is the Novieex 120,000 BTU Propane Outdoor any good?

We rate it 4.1/10 (fair), #5 of 5 in our outdoor propane tankless water heater ranking. It is based on 20 buyer reviews averaging 5.0/5 and the specifications stated in the listing.

How much hot water can the Novieex 120,000 BTU Propane Outdoor deliver?

The listing states a maximum flow of 5.3 GPM and a gas input of 120,000 BTU/h on 110 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 Novieex 120,000 BTU Propane 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 Novieex 120,000 BTU Propane Outdoor?

Its listing states up to 5.3 GPM, outdoor mounting that skips the flue and temperature held within ±1 °F. 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 Novieex 120,000 BTU Propane Outdoor?

Your winter flow: 5.3 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: 1 years are stated. 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 Novieex 120,000 BTU Propane 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 Novieex 120,000 BTU Propane Outdoor yourselves?

No, we haven't used it ourselves. Everything on this page comes from its listing and 20 buyer reviews, read line by line and weighed with our published formula.

Keep comparing

If the Novieex 120,000 BTU Propane Outdoor hasn't sold you yet, see where it ranks or browse all gas tankless water heaters.

Where it ranks

Best Outdoor Propane Tankless Water Heaters in 2026 →

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