11 Gasland Cg422ng Tankless Water Heater Review of 2026 For Steady Hot Water

1

GASLAND BS318 Outdoor Propane Tankless Water Heater 3.18GPM, 12L Portable

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  9.6
• Brand
  GASLAND

Key specs2

Ignition and power source

Two D-cell batteries with 20 lb propane tank

Water flow and heating capacity

Rated at 82,000 BTU per hour with a maximum flow rate of 3.18 GPM. The unit delivers a temperature rise between 55.4 F at top flow and 109.4 F at lower volume.

Pros & cons42

Pros

• Delivers up to 3.18 GPM using an 82,000 BTU burner for outdoor and cabin setups
• Starts smoothly on low water pressure down to 3.6 PSI
• Includes a CSA certified gas regulator, hose, and switch-enabled shower head
• Operates off-grid using a standard 20-pound propane tank and two D batteries

Cons

• Designed for outdoor installation only and cannot be vented indoors
• Not compatible with residential natural gas lines

2

GASLAND Gasmart E 199000 BTU Tankless Water Heater, Up to

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  8.9
• Brand
  GASLAND

Key specs2

Energy efficiency rating

0.8 UEF rating with CSA safety certification

Gas line and venting

Engineered specifically for indoor residential natural gas connections, requiring adequate supply line volume and dedicated exhaust venting to support its 199,000 BTU burner.

Pros & cons42

Pros

• Outputs up to 199,000 BTU to supply continuous hot water at up to 7.6 GPM
• Connects directly to residential natural gas for whole-house indoor use
• Meets an energy factor of 0.8 UEF with CSA safety certification
• Includes freeze protection, flame-out protection, and overheat safety shut-off

Cons

• Requires dedicated indoor venting and matching gas supply line capacity
• Weighs 37.5 pounds, needing solid structural wall anchoring

3

GASLAND Portable Tankless Water Heater Propane | 6L 1.58 GPM

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  8.9
• Brand
  GASLAND

Key specs2

Safety shut-off mechanisms

• Overheating and low water flow protection
• Dry combustion and flame failure sensors
• Built-in anti-freezing and high pressure relief

Ignition and electrical source

Two D-cell batteries with electronic ignition

Pros & cons42

Pros

• Compact 5.2 by 5.2 inch depth fits tight outdoor wall locations
• Fires up at a low water pressure threshold of 3.6 PSI
• Features CSA certified dry combustion, anti-freeze, and flame failure protection
• Bright LED readout displays real-time water temperature

Cons

• Capacity capped at 1.58 GPM and 41,000 BTU, limiting it to single-point outdoor use
• Runs on liquid propane only and cannot hook up to natural gas

4

Portable Tankless Water Heater, GASLAND Outdoors 6L 1.58GPM Propane Water

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  8.9
• Brand
  GASLAND

Key specs1

Ignition and electrical source

Powered by two D-cell batteries for electronic ignition, letting you run off-grid from a 20-pound propane cylinder without needing a 120-volt wall outlet.

Pros & cons42

Pros

• Lightweight 15.12-pound build simplifies outdoor hanging for camp or RV tasks
• CSA certified with low water flow and dry combustion protections
• Activates reliably with water pressure as low as 3.6 PSI
• Clear LED display shows exiting water temperature

Cons

• Delivers only 1.58 GPM, which cannot support indoor multi-tap household demand
• Operates solely on portable propane tanks rather than home gas lines

5

GASLAND BE158B Tankless Water Heater Propane | CSA Certified |

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  8.2
• Brand
  GASLAND

Key specs2

Water pressure requirements

Starts at 3.6 PSI minimum operating pressure

Casing footprint and mounting

Measures 11.8 by 6.1 by 17.3 inches in a black finish. Built for quick exterior mounting using standard hardware.

Pros & cons42

Pros

• Provides 41,000 BTU heating capacity with an easy-to-read LED screen
• Starts heating at a low 3.6 PSI water pressure requirement
• Equipped with a CSA certified flame failure device and overheat sensor
• Portable 15.4-pound casing mounts easily to temporary posts or outdoor walls

Cons

• Restricted to 1.58 GPM, creating temperature drops if inlet water is cold
• Unsuitable for permanent indoor home plumbing or natural gas connections

6

GASLAND Compact Propane Tankless Water Heater Indoor, Up to 4

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  8.2
• Brand
  GASLAND

Key specs2

Temperature stability

Employs flow sensors paired with a microchip processor to regulate heat output dynamically, keeping water within 0.5 degrees Fahrenheit of your target setting.

Simultaneous fixture demand

Supplies up to two showers and one sink at 4 GPM

Pros & cons42

Pros

• High-speed chip and flow sensors maintain water temperature within 0.5 degrees F
• Generates up to 98,500 BTU to feed up to two showers and a faucet simultaneously
• Multi-layer noise isolation minimizes sound in tight indoor spaces
• Compact wall-hung design fits inside utility closets and tiny home cabinets

Cons

• Configured strictly for liquid propane rather than standard utility natural gas
• Indoor venting and safe clearance specifications must be confirmed prior to mounting

7

GASLAND Goshower G5 Pro Portable Propane Tankless Water Heater –

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  7.9
• Brand
  GASLAND

Key specs2

Outdoor off-grid portability

• Integrated folding and sliding carry handle
• Smooth screwless exterior casing
• Pop-up battery compartment for quick swaps

Accessories and hookups

Supplied with a dedicated water pump and inlet strainer, allowing you to draw water directly from buckets or storage tanks without pressurized municipal plumbing.

Pros & cons42

Pros

• Includes a dedicated water pump and strainer for drafting from water containers
• Pop-up battery box allows one-handed replacement of the two D batteries
• Features a folding, sliding handle for quick packing and off-grid hanging
• Screwless exterior casing prevents snags and sharp contact during transport

Cons

• Delivers 1.32 GPM and 34,000 BTU, making it the lowest-output model in the lineup
• Outdoor propane only, lacking home natural gas compatibility or indoor venting

8

GASLAND Gasmart C Propane Gas Tankless Water Heater Indoor, Max

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  7.8
• Brand
  GASLAND

Key specs3

Gas line and venting

Features 3/4-inch NPT plumbing connections and includes a 3-inch exhaust pipe in the packaging for code-compliant indoor venting.

Freeze protection details

Heats below 41 F to prevent freeze damage (120V required)

Temperature stability

Maintains temperature within plus or minus 1 degree F

Pros & cons42

Pros

• Delivers up to 5.0 GPM with a 113,000 BTU burner for multi-fixture home use
• Smart chip modulation and dual thermistors hold temperature within 1 degree F
• Includes standard 3/4-inch NPT water fittings and bundled 3-inch exhaust pipe
• CSA certified with automatic freeze protection activating below 41 degrees F

Cons

• Requires a 120-volt electrical outlet to power the internal controls and blower
• Runs on liquid propane, requiring an outdoor tank rather than utility natural gas

9

GASLAND BS264 Outdoor Propane Tankless Water Heater 2.64GPM, 10L Portable

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  7.8
• Brand
  GASLAND

Key specs2

Outdoor off-grid portability

Weighs 22 pounds and operates completely off-grid with two D batteries, making it suitable for cabins, barns, and washing stations without electrical service.

Accessories and hookups

• CSA certified gas regulator and hose
• Five-foot shower wand with shut-off switch
• Garden hose adapter and mounting hardware

Pros & cons42

Pros

• Produces up to 2.64 GPM backed by a 68,000 BTU burner for cabins and barns
• Comes with a CSA certified regulator, hose, and 5-foot shower wand
• Operates off 3.6 PSI water pressure without requiring electrical hookups
• Portable 22-pound build hangs easily via integrated mounting brackets

Cons

• Outdoor propane use only; manufacturer warns against Teflon tape on the gas inlet
• Not suitable for indoor multi-fixture residential natural gas retrofits

10

GASLAND 16L Propane Outdoor Tankless Water Heater | 4.22GPM 110,000

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  7.2
• Brand
  GASLAND

Key specs2

Water flow and heating capacity

4.22 GPM maximum flow with 110,000 BTU power output

Safety shut-off mechanisms

• Over-temperature and flame failure shut-off
• Anti-freezing protection and high water pressure relief
• Low water flow and dry combustion shut-down

Pros & cons42

Pros

• High 110,000 BTU heating capacity provides up to 4.22 GPM outdoors
• Equipped with CSA certified over-heat, anti-freeze, and dry combustion guards
• Runs off-grid using a 20-pound propane cylinder and two D-cell batteries
• Digital LED readout monitors hot water output temperature clearly

Cons

• Requires slightly higher minimum water pressure of 4.0 PSI to ignite
• Outdoor installation only, offering no indoor venting setup for whole-house natural gas

11

GASLAND Gasmart C 150,000 BTU, Max 5.8 GPM CSA Certified

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  7.2
• Brand
  GASLAND

Key specs2

Energy efficiency rating

Achieves an industry-leading 0.8 UEF rating, providing 34 percent greater efficiency and 65 percent lower NOx emissions compared to standard 50-gallon gas storage tanks.

Simultaneous fixture demand

Up to 5.8 GPM continuous hot water for whole house use

Pros & cons42

Pros

• Connects directly to residential natural gas lines for whole-house indoor use
• Delivers up to 5.8 GPM on a 150,000 BTU burner to support simultaneous taps
• Achieves a 0.8 UEF rating, reducing NOx emissions by 65 percent over 50-gallon tanks
• CSA certified with built-in safety sensors and a compact wall-hung profile

Cons

• Must be vented through an approved indoor exhaust flue to the outdoors
• Requires verification of residential gas line diameter to sustain 150,000 BTU demand

Last update on 2026-10-24 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Can this natural gas heater supply a shower and a sink simultaneously without temperature drops?

Yes, provided your simultaneous water demand remains within the unit's maximum flow rate. Natural gas units in this lineup supply up to 5.0 GPM with 113,000 BTU or up to 5.8 GPM with 150,000 BTU, which supports running a standard shower alongside a kitchen sink in moderate climates. If multiple high-demand fixtures run at once in colder weather, verify your total fixture flow rate against the unit's capacity so you do not exceed its heating output.

What venting diameter and electrical connections are required for indoor installation?

Indoor C-series models require a dedicated 3-inch exhaust pipe to vent exhaust gases safely through an outside wall or roof. Electrical ignition and digital control boards run on a standard 120-volt power connection. You must also verify that your residential natural gas supply line provides sufficient pressure and pipe diameter to deliver the required 113,000 BTU to 150,000 BTU without starving other gas appliances.

How does the system prevent sudden cold water spikes when water pressure fluctuates?

The unit monitors inlet and outlet thermistors to read incoming and outgoing temperatures in real time. A high-speed smart chip pairs with integrated flow sensors to modulate gas delivery, maintaining precision temperature control within plus or minus 0.5 degrees Fahrenheit. Homeowners weighing fuel choices against a tankless electric water heater will appreciate how this active modulation stabilizes fixture temperatures without sudden cold shock.

How does cold winter groundwater impact the delivered hot water volume?

Delivered flow drops as the required temperature lift increases during colder months. When incoming groundwater is mild, the heater manages a modest 55.4-degree Fahrenheit rise at its maximum rated output. If winter groundwater drops near freezing and requires a steep 109.4-degree Fahrenheit rise, the flow rate decreases to maintain your chosen setpoint. Those comparing performance with a dedicated propane on-demand water heater should calculate local winter groundwater temperatures to ensure the flow remains adequate.

What safety mechanisms protect the unit from freeze damage and gas leaks?

CSA-certified indoor models come equipped with integrated freeze protection, an overheat cutoff fuse, and flameout protection. If water temperatures reach unsafe levels, or if the burner flame extinguishes during operation, the system cuts off gas flow immediately to prevent hazards. Built-in thermal sensors also shut down the burner if heat exchanger temperatures exceed safe operating limits, protecting your plumbing lines from thermal stress.

How much more efficient is a natural gas on-demand unit compared to a standard tank?

A natural gas tankless unit with a Uniform Energy Factor (UEF) of 0.8 is 34 percent more energy-efficient than a standard 50-gallon storage tank. Instead of continuously burning gas to keep 50 gallons warm all day, the system provides unlimited hot water on demand only when a faucet opens. This on-demand operation eliminates standby heat loss while freeing up floor space with a compact wall-hung profile.