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GASLAND Gasmart E 199,000 BTU Review

Name: GASLAND Gasmart E 199,000 BTU
Brand: GASLAND
SKU: B0DS1544T6

6.9Good · out of 10Not in our top-5 rankings

Written from the listing and 63 buyer reviews, not from our own use · How we rate

The GASLAND Gasmart E 199,000 BTU packs up to 7.6 GPM and built-in freeze protection into one indoor gas tankless heater. 63 buyers rate it 4.2/5, and it suits replacing a 40-gallon tank in a mid-size home.

Price$629.99Price on Sep 30, 2026 · may have changed

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Specifications

Brand	GASLAND
Category	Gas tankless water heaters
Fuel	Natural gas
Stated mounting location	Indoor
Stated maximum flow	7.6 GPM
Stated gas input	199,000 BTU/h
Freeze protection	Stated in the listing
Buyer reviews	63 · 4.2/5
ASIN	B0DS1544T6

Full listing title: GASLAND Gasmart E 199,000 BTU Tankless Water Heater, Up to 7.6 GPM, CSA Certified Whole House Natural Gas Indoor Installation Residential On-demand Instant Hot Water Heater, CE686NG

Listing evidence

Fuel	Natural Gas Full listing title
Stated mounting location	Indoor Full listing title
Stated maximum flow	7.6 GPM Full listing title
Stated gas input	199,000 BTU Full listing title

Updated October 2026

Exact listing, ASIN B0DS1544T6

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 ↗

GASLAND Gasmart E 199,000 BTU

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

Stated: 7.6 GPM · 199,000 BTU/h
63 buyer reviews
Gas tankless water heaters

This product ↑

Rheem RTG 7.0 GPM Natural Gas Indoor

7.0Good · out of 10$653.77 Price on Sep 30, 2026 · may have changed

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

See the review ↗

Rinnai RX160iN Condensing Smart Sense

6.8Good · out of 10$1,442.70 Price on Sep 30, 2026 · may have changed

Stated: 9 GPM
70 buyer reviews
Gas tankless water heaters

See the review ↗

Up to 7.6 GPM from a 199,000 BTU burner

That's the maximum flow the listing states, and headline flows are usually quoted at a mild temperature rise. A cold January asks for a 63 °F rise (42 °F in, 105 °F out), and at that rise every tankless gives less than its headline; the maker's chart says how much. At 2 GPM a shower (our calculator's figure), the headline means 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

Freeze protection. Stated in the listing. Useful in a garage, a crawl space or a cabin that sits empty in winter, as long as the unit keeps power.

Safety listing. CSA, ETL or UL certification is named in the listing. Inspectors look for that mark before they sign off.

One shower at a time, or two?

One at a time, plus the kitchen tap: 7.6 GPM covers that on paper.

Two at once: possible where the tap water comes in warm. In a northern January the second shower is the one that runs lukewarm, so read the flow chart at a 63 °F rise first.

Great for you if…

You run one shower and the kitchen tap at once, rarely more
It will live in a garage, a cabin or another cold spot

Skip it if…

You want a tight temperature hold: the listing claims no ±1 °F control
You want the high-efficiency kind: the listing doesn't call it condensing
The far bathroom already waits a minute for hot water: no built-in recirculation is named

Gas, venting and what's in the box

What the GASLAND Gasmart E 199,000 BTU listing names:

Up to 7.6 GPM
199,000 BTU/h input
Natural gas
Indoor mounting
Freeze protection named
CSA, ETL or UL mark named

Read the installation manual for the vent, the gas line size and the clearances before you order; it overrides anything above.

Price and cost per GPM of stated flow

$629.99 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 $82.89 (price ÷ stated GPM, our arithmetic). That puts it in the cheaper third of the 45 indoor gas tankless heaters we have a price and a stated flow for.

The online price is the heater alone. Venting, a bigger gas line where needed and the installer's day are a separate bill, often as big as this one.

The button opens the exact listing (ASIN B0DS1544T6), where today's price, stock and seller apply.

A better fit for your house?

Two showers and the dishwasher at once? The MIZUDO 199,000 BTU Natural Gas Indoor (9.2/10) states up to 10.3 GPM.

No easy route for a vent pipe? The Rheem RTG 8.4 GPM Natural Gas Outdoor (7.7/10) mounts on an outside wall, per its listing.

Want the high-efficiency kind? The Rheem RTGH 8.4 GPM Natural Gas Indoor (7.3/10) is a condensing unit, per its listing.

Our take

The verdict

We like the GASLAND Gasmart E 199,000 BTU for up to 7.6 GPM and built-in freeze protection. Only 63 buyers have rated it so far (4.2/5), so treat the score as an early read. The catch with this GASLAND indoor gas tankless heater: no stated temperature hold, while most picks here claim ±1 °F. We'd pick it if you run one shower and the kitchen tap at once, rarely more; otherwise, put it next to the Eccotemp i12-LP Propane Indoor first.

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

Living with it

Install day

Old tank out, unit on the wall, vent through the wall or the roof. Plan the gas line for 199,000 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. 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 clean the inlet filter. Our flushing and descaling guide has the checklist.

What buyers say

Buyers give it 4.2/5, a solid record, slightly below our ranked picks' 4.3 average. 63 reviews is still a modest pile, so a handful of new ones can move it.

The numbers

Buyer rating: 4.2/5
Reviews: 63
Ranked picks' average: 4.3/5

The one thing we'd check first

Before the GASLAND Gasmart E 199,000 BTU ships, check your gas line: 199,000 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

7.6 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.

Vent and gas line

Ask the plumber to check the gas line size and the meter against the heater's input, and to quote the vent route at the same visit. Our install cost guide shows what that usually adds.

The warranty terms

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 GASLAND Gasmart E 199,000 BTU stacks up against the closest alternative, the Eccotemp i12-LP Propane Indoor.

Criterion	GASLAND Gasmart E 199,000 BTU	Eccotemp i12-LP Propane Indoor
Our rating	6.9/10	6.9/10
Max flow	7.6 GPM	Not stated
Gas input	199,000 BTU/h	Not stated
Buyer reviews	63 · 4.2/5	None captured

Both score 6.9/10. The GASLAND Gasmart E 199,000 BTU brings more flow (7.6 GPM) and a bigger burner (199,000 BTU/h), so it has the edge on paper.

Compare side by side ↗See the Eccotemp i12-LP Propane Indoor review →

The score in detail

How we rated it

Our score: 6.9/10

Buyer rating (45%)

37.8 / 45

4.2/5 average

Review volume (35%)

17.1 / 35

63 buyer reviews

Documented specifications (20%)

14.2 / 20

71/100 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 for this exact listing, 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 GASLAND Gasmart E 199,000 BTU any good?

We rate it 6.9/10 (good). It is based on 63 buyer reviews averaging 4.2/5 and the specifications stated in the listing.

How much hot water can the GASLAND Gasmart E 199,000 BTU deliver?

The listing states a maximum flow of 7.6 GPM and a gas input of 199,000 BTU/h. 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 GASLAND Gasmart E 199,000 BTU be installed indoors?

Yes, the listing says indoor mounting. That means a vent route to the outside, combustion air and a gas line sized for the unit, all as the maker and your local code require. A licensed plumber or gas fitter sorts that out.

What do you get with the GASLAND Gasmart E 199,000 BTU?

Its listing states up to 7.6 GPM and freeze protection. 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 GASLAND Gasmart E 199,000 BTU?

Your winter flow: 7.6 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. Vent and gas line: ask the plumber to check the gas line size and the meter against the heater's input, and to quote the vent route at the same visit. Our install cost guide shows what that usually adds. The warranty terms: 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 GASLAND Gasmart E 199,000 BTU?

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 GASLAND Gasmart E 199,000 BTU yourselves?

No, we haven't used it ourselves. Everything on this page comes from its listing and 63 buyer reviews, read line by line and weighed with our published formula.

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