GASLAND Compact Propane Tankless Water Heater Indoor, Up to 4.22 GPM 102,000 BTU On-Demand Instant Hot Water Heater, Extremely Compact, Ultra Quiet, More Stable Temp for Residential Use, CG422LP

Price: $449.09 - $359.27
(as of Feb 13, 2026 08:08:20 UTC – Details)

Product description

Product Information

Frost Prevention Precautions

Fits 3–4 People’s Needs

With 110,000 BTU and 4.7 GPM, it powers 2 showers + 2 kitchen tap at the same time—ideal for families.

Smaller, More Powerful

This compact unit saves 200% more space than tank heaters and 35% more than other tankless brands—ideal for homes, apartments, and tight spaces.

High Efficiency & Durability

Heats water in 3 seconds with 96.9% efficiency. Built to last up to 5 years with a corrosion-resistant oxygen-free copper heat exchanger.

Service

If your water heater fails in the first year, we’ll replace it for free. Contact support via phone, email, or message—see the manual for details.

Does this run off of batteries or is it plugged in?

It works with 120 volt wall plug.

What are the exhaust pipe specs/requirements ?

φ3”Category III Stainless Steel Venting. It must be installed with Category III Stainless Steel vent pipe in accordance with vent supplier.

Is it energy-efficient?

Yes, the Compact series UEV is 0.82. Compared to traditional water heaters with a UEV of 0.6, it delivers enhanced performance while reducing energy costs by up to 30%.

Can this unit be used at an altitude of 3,500 ft?

No, not recommended in excess of 2000 feet above sea level.

Is the size smaller than other gas water heaters with the same GPM?

Yes. The Compact series is approximately 30% smaller than other machines with the same GPM rating. This smaller footprint enables greater efficiency and energy savings.

Tankless Gas Water Heater Indoor

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Customer Reviews

4.2 out of 5 stars 18

4.2 out of 5 stars 18

4.2 out of 5 stars 64

4.1 out of 5 stars 28

3.6 out of 5 stars 4

4.1 out of 5 stars 28

3.2 out of 5 stars 11

Price

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$359.27$359.27

$459.99$459.99

$479.99$479.99

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$629.99$629.99

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Series Title

Compact

Compact

Gasmart C

Gasmart E

Gasmart C

Gasmart E

Gasmart C

Advantage

Extremely Compact

Extremely Compact

Powerful Output

Powerful Output

Whole House

Whole House

Tiny House

Fuel Type

Propane

Propane

Natural Gas

Natural Gas

Natural Gas

Propane

Propane

GPM (Max.)

3.81

4.7

5.8

5.8

7.6

7.6

2.64

BTU Input (Max.)

98,500 BTU

110,000 BTU

150,000 BTU

150,000 BTU

199,000 BTU

199,000 BTU

68,000 BTU

Mounting Location

Indoor

Indoor

Indoor

Indoor

Indoor

Indoor

Indoor

Voltage

120V

120V

120V

120V

120V

120V

120V

Gas Inlet

NPT 1/2″

NPT 1/2″

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 1/2″

Water Inlet and Outlet

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 3/4″

【Exceptional Temperature Stability】Enjoy steady hot water from every faucet—even with multiple taps running at once. This indoor propane water heater system keeps the temperature constant regardless of changes in water pressure or weather. Plus, hot water restarts instantly after turning the tap back on—no waiting, no fluctuations.
【Precision Temperature Control (±0.5°F)】Our propane tankless water heater features cutting-edge flow sensors and a high-speed smart chip that performs thousands of calculations per second. This ensures water temperature stays within ±0.5°F of your setting—providing unmatched comfort and consistency.
【Compact, Space-Saving Design】Measuring just 18.5″ H x 12.2″ W x 6.38″ D, this compact CG422LP indoor propane tankless water heater saves over 200% more space than traditional tank water heaters and 35% more than most other tankless brands. Perfect for apartments, small homes, or tight spaces like cabinets and utility closets.
【Ultra-Quiet Operation】This indoor tankless propane water heater features cutting-edge AI-powered multi-layer noise reduction and multi-source isolation technology, making it significantly quieter than most other tankless models on the market. The intelligent system continuously minimizes sound for a peaceful, comfortable home environment—perfect for apartments, small homes, and open-concept living spaces.
【Powerful Performance for Multi-Point Use】With 102,000 BTU of heating power and a 4.22 GPM flow rate, this indoor propane tankless water heater can easily supply hot water to two showers and two kitchen faucet simultaneously. Ideal for households of 3–4 people, with no risk of sudden temperature drops during use.
【Built-In Safety Features】Enjoy peace of mind with multiple built-in protection systems, including: Anti-freeze protection, Overheat protection, Dry burn protection, High water pressure protection, Low water flow protection, Flame failure and flame-out protection.
【Easy Installation】Features standard 3” vent pipe, 3/4″ NPT water outlet & inlet, and a 1/2” NPT gas inlet for quick, convenient installation. For best performance, we recommend using the GASLAND GSVP70T venting kit or the GSWT300 wall thimble.
【Sleek Tempered Glass Design】This tankless propane water heater features a stylish tempered glass front that’s built to last—resistant to high heat and everyday impact. The smooth surface is easy to clean with just a soft cloth. To preserve its appearance, avoid using corrosive cleaning agents. A perfect combination of modern design and practical durability.
【Long-Lasting Performance】Built to last up to 5 years, this indoor propane tankless water heater features an oxygen-free copper heat exchanger for superior thermal conductivity and corrosion resistance. Heats water in just 3 seconds with up to 96.9% efficiency—delivering fast, reliable hot water whenever you need it.
【Customer Support & Warranty】We stand by our products with a comprehensive warranty. If your indoor propane tankless water heater stops working within the first year, we’ll replace it for free. Our support team is always ready to assist via phone, email, or message—see the manual for contact details.