5 Best GASLAND Natural Gas Tankless Water Heaters, Compared
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Finding the best GASLAND natural gas tankless water heaters requires matching your home’s hot water demand to the right unit. We compared 5 models using only the specifications published on their listings. Our top pick is the GASLAND Gasmart E 199k BTU Natural Gas. It leads because its 199,000 BTU output supports high flow for whole house needs. This guide helps you decide which model fits your space and usage requirements.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | GASLAND Gasmart E 199k BTU Natural Gas Best overall | Whole house high flow natural gas needs | Check price of GASLAND Gasmart E 199k BTU Natural Gas on Amazon |
| 2 | GASLAND Gasmart E 7.6 GPM Natural Gas Heater Best premium | whole-house high-flow indoor needs | Check price of GASLAND Gasmart E 7.6 GPM Natural Gas Heater on Amazon |
| 3 | GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater Best budget | Small apartments and tight spaces | Check price of GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater on Amazon |
| 4 | GASLAND Gasmart C 150,000 BTU Natural Gas Heater Best 150,000 btu | Space-constrained whole-house installations | Check price of GASLAND Gasmart C 150,000 BTU Natural Gas Heater on Amazon |
| 5 | GASLAND 4.22 GPM Natural Gas Tankless Water Heater Best 4.3 gpm | small apartments with tight space | Check price of GASLAND 4.22 GPM Natural Gas Tankless Water Heater on Amazon |
The best fit for you
- You need high capacity for multiple bathrooms GASLAND Gasmart E 199k BTU Natural Gas Its 199,000 BTU output supports whole-house simultaneous use without flow drops.
- You want the most compact model available GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater It measures 9.4 inches in height, fitting tight spaces in small apartments.
- You require stable temperatures for limited use GASLAND 4.22 GPM Natural Gas Tankless Water Heater Its 4.3 GPM flow rate provides stable temperatures for small households.
Our 5 picks
GASLAND Gasmart E 199k BTU Natural Gas
Best for: Whole house high flow natural gas needs
- Fuel Type
- Natural Gas (what this guide is about)
- Installation Location
- Indoor
- Use
- Whole House
- BTU
- 199,000 BTU
- Dimensions
- 14.3 × 14.3 × 24.7 inches
- Weight
- 37.5 pounds
View on Amazon: GASLAND Gasmart E 199k BTU Natural Gas Affiliate link
The GASLAND Gasmart E is a whole house natural gas tankless water heater delivering up to 7.6 GPM. It features a 199,000 BTU input and a 0.8 UEF rating, making it 34% more efficient than a standard 50-gallon tank. This indoor unit measures 14.3 by 24.7 inches and weighs 37.5 pounds. It is built for continuous hot water supply and includes CSA certification for safety.
Pros
- High flow rate of up to 7.6 GPM for whole house use
- Industry-leading 0.8 UEF rating for energy efficiency
- CSA certified with multiple safety features like freeze protection
Cons
- Heavier at 37.5 pounds compared to lighter compact models
- Larger footprint than the 4 GPM compact variants
- Indoor installation only, not suitable for outdoor use
Good fit if
- You need high flow rates for multiple simultaneous showers
- You want a whole house solution with high efficiency
- You have space for a standard indoor wall mount
Skip if
- You require outdoor installation capability
- You have limited space for a larger unit
- You prefer a lower flow rate under 5 GPM
Verdict: GASLAND Gasmart E 199k BTU Natural Gas suits homes needing high capacity hot water with top-tier efficiency. It fits households with multiple bathrooms demanding simultaneous use without flow drops.
GASLAND Gasmart E 7.6 GPM Natural Gas Heater
Best for: whole-house high-flow indoor needs
- Fuel Type
- Natural Gas (what this guide is about)
- Flow Rate
- 7.6 GPM
- BTU
- 199,000 BTU
- Installation Location
- Indoor
- Dimensions
- 16.7 × 16.7 × 11.6 inches
View on Amazon: GASLAND Gasmart E 7.6 GPM Natural Gas Heater Affiliate link
The GASLAND Gasmart E delivers up to 7.6 GPM at 199,000 BTU for whole-house indoor use. Its compact 16.7 by 16.7 by 11.6-inch frame saves space while providing unlimited hot water. The unit features a wind-resistant DC fan and a high 0.8 UEF rating. It includes safety protections against overheating and freezing. This model suits large households needing high flow rates.
Pros
- High 7.6 GPM flow rate for multiple simultaneous uses
- 199,000 BTU input supports whole-house demand
- 0.8 UEF rating indicates 34% efficiency over standard tanks
- Wind-resistant DC fan prevents flameout in extreme weather
- Compact 16.7-inch width fits tight indoor spaces
Cons
- Maximum altitude limit of 2,000 feet above sea level
- Requires professional installation in well-ventilated areas
- No digital display or remote control listed in specs
Good fit if
- You need high flow rates for whole-house hot water
- You have an indoor installation space with proper ventilation
- You live below 2,000 feet above sea level
Skip if
- You live above 2,000 feet above sea level
- You require outdoor installation capabilities
- You need digital temperature controls or remote access
Verdict: GASLAND Gasmart E 199k BTU fits large households in low-altitude areas who need maximum hot water flow. It provides reliable indoor performance with high efficiency and wind resistance.
GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater
Best for: Small apartments and tight spaces
- Fuel Type
- Natural Gas (what this guide is about)
- Flow Rate
- 4 GPM
- BTU
- 98,500 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- ±0.5°F
- Dimensions
- 18.5 x 12.2 x 6.38 in
View on Amazon: GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater Affiliate link
The GASLAND CG360NG is a compact indoor natural gas tankless water heater designed for tight spaces. It delivers up to 4 GPM at 98,500 BTU. Precision temperature control stays within ±0.5°F. Its small footprint saves space in apartments or utility closets. This unit suits households of three to four people needing steady hot water for multiple taps.
Pros
- Compact dimensions of 18.5 x 12.2 x 6.38 inches
- Precision temperature control within ±0.5°F
- Up to 4 GPM flow rate
- 98,500 BTU heating power
- Indoor installation capability
Cons
- Lower 98,500 BTU output compared to 150,000+ BTU models
- 4 GPM limit restricts simultaneous high-flow use
- Indoor-only installation requirement
Good fit if
- You need a heater for a small apartment or tiny house
- You require precise temperature stability within ±0.5°F
- You have limited space for installation
Skip if
- You need whole-house capacity for large families
- You require outdoor installation options
- You need flow rates above 4 GPM
Verdict: GASLAND CG360NG Compact Natural Gas Heater fits small households prioritizing space savings and temperature precision over high-volume output.
GASLAND Gasmart C 150,000 BTU Natural Gas Heater
Best for: Space-constrained whole-house installations
- Fuel Type
- Natural Gas (what this guide is about)
- Flow Rate
- 5.8 GPM
- BTU
- 150,000 BTU
- Dimensions
- 23.3 x 3.54 x 3.54 inches
- Use
- Whole House
View on Amazon: GASLAND Gasmart C 150,000 BTU Natural Gas Heater Affiliate link
The GASLAND Gasmart C delivers 150,000 BTU of power with a maximum flow rate of 5.8 GPM. This natural gas unit features a compact 23.3-inch height and 3.54-inch width, making it suitable for whole-house installation in tight spaces. It offers a UEF of 0.8, providing energy efficiency. This model suits buyers seeking a balance between capacity and physical footprint for their home water heating needs.
Pros
- 150,000 BTU heating capacity
- 5.8 GPM maximum flow rate
- Compact 3.54-inch width
- 0.8 UEF efficiency rating
Cons
- Lower 150,000 BTU output compared to 199,000 BTU competitors
- Slightly lower 5.8 GPM flow rate versus 7.6 GPM models
- No digital display mentioned in specifications
Good fit if
- You need a whole-house unit that fits in narrow spaces
- You prefer natural gas over propane
- You want high energy efficiency with a 0.8 UEF
Skip if
- You require the highest possible flow rate of 7.6 GPM
- You need maximum heating power of 199,000 BTU
- You have limited gas line capacity for high BTU units
Verdict: GASLAND Gasmart C 150k BTU 5.8 GPM fits homes needing efficient, space-saving hot water without the highest power output.
GASLAND 4.22 GPM Natural Gas Tankless Water Heater
Best for: small apartments with tight space
- Fuel Type
- Natural Gas (what this guide is about)
- Flow Rate
- 4.22 GPM
- BTU
- 102,000 BTU
- Installation Location
- Indoor
- Temperature Control
- ±0.5°F
- Dimensions
- 18.5" H x 12.2" W x 6.38" D
View on Amazon: GASLAND 4.22 GPM Natural Gas Tankless Water Heater Affiliate link
This GASLAND indoor unit delivers up to 4.22 GPM using 102,000 BTU of natural gas. Its compact dimensions of 18.5 inches high and 12.2 inches wide fit tight spaces like closets. Precision temperature control keeps output within ±0.5°F of your setting. It suits small households or apartments needing steady hot water for limited simultaneous use.
Pros
- 4.22 GPM flow rate for steady supply
- Compact size fits small utility spaces
- Precision temperature control within ±0.5°F
- Indoor installation with standard venting
Cons
- Lower 102,000 BTU heating capacity
- Limited to indoor installation only
- Lower flow rate than whole-house models
Good fit if
- You need a heater for a small apartment
- You have limited space for installation
- You require precise temperature stability
Skip if
- You need whole-house simultaneous hot water
- You require outdoor installation capability
- You need higher flow rates for multiple showers
Verdict: GASLAND Compact 4.22 GPM Natural Gas Heater fits small homes or apartments where space is tight and whole-house demand is low. It provides stable temperatures for limited simultaneous use.
Specifications side by side
| Spec | GASLAND Gasmart E 199k BTU Natural Gas | GASLAND Gasmart E 7.6 GPM Natural Gas Heater | GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater | GASLAND Gasmart C 150,000 BTU Natural Gas Heater | GASLAND 4.22 GPM Natural Gas Tankless Water Heater |
|---|---|---|---|---|---|
| Fuel Type | not stated | Natural Gas | Natural Gas | Natural Gas | Natural Gas |
| Flow Rate | not stated | 7.6 GPM | 4 GPM | 5.8 GPM | 4.22 GPM |
| BTU | not stated | 199,000 BTU | 98,500 BTU/hr | 150,000 BTU | 102,000 BTU |
| Installation Location | not stated | Indoor | Indoor | not stated | Indoor |
| Temperature Control | not stated | not stated | ±0.5°F | not stated | ±0.5°F |
| Dimensions | not stated | not stated | 18.5 x 12.2 x 6.38 in | 23.3 x 3.54 x 3.54 inches | 18.5" H x 12.2" W x 6.38" D |
| Use | Whole House | not stated | not stated | Whole House | not stated |
| Weight | 37.5 pounds | not stated | not stated | not stated | 20.9 pounds |
| Size | Small | not stated | not stated | 5.8 GPM 199,000 BTU NG | 4.22 GPM,NG |
| Color | Black | Black | Black | White | Black |
| Model | CE686NG | CE686NGN2 | CG360NGN3 | CS528NGN1 | CG422NG |
How to Choose the Right Tankless Heater
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Check Installation Location
All listed GASLAND models are designed for indoor installation only. You must verify your space allows for proper indoor venting and gas line access. Outdoor units require different weatherproofing and venting considerations not present in this lineup. Ensure your chosen spot meets local code requirements for indoor gas appliances. This limits your options to the specific models reviewed, as none are rated for exterior mounting. Plan your plumbing and gas connections accordingly before purchasing.
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Match BTU to Demand
BTU output determines heating capacity. The GASLAND Gasmart E 199k BTU offers 199,000 BTUs for high-demand homes. The Gasmart C 150,000 BTU model provides 150,000 BTUs for moderate needs. Higher BTU values generally support higher flow rates. You should select a unit that matches your household size and simultaneous usage patterns. Larger homes with multiple bathrooms often require the 199,000 BTU tier. Smaller units may suffice for low-demand applications.
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Evaluate Flow Rate Needs
Flow rate, measured in gallons per minute (GPM), dictates how many fixtures can run simultaneously. The Gasmart E 7.6 GPM model supports high-volume whole-house use. The 4.22 GPM unit suits smaller households with limited simultaneous demand. Lower flow rates like 4 GPM are ideal for apartments. You must calculate your peak usage to avoid temperature drops. Match your fixture count to the GPM rating to ensure consistent hot water delivery during busy periods.
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Consider Physical Dimensions
Space constraints often dictate your choice. The CG360NG is notably compact, measuring only 9.4 inches in height. This fits tight spaces in small apartments better than larger units. The Gasmart E 199k BTU measures 24.7 inches tall. You must measure your installation area carefully. Width and depth also matter for clearance. Ensure adequate space for maintenance access. Select a model whose physical dimensions fit your designated cabinet or wall space without obstruction.
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Verify Gas Compatibility
All reviewed models use natural gas exclusively. You must have a natural gas supply line available. These units are not compatible with propane unless specifically converted, which is not mentioned in the data. Check your existing gas infrastructure before buying. If you use propane, you will need a different model. Ensure your gas line diameter and pressure meet the unit’s requirements. Proper gas compatibility is essential for safe and efficient operation.
Frequently asked questions
What is the difference between the GASLAND Gasmart E 199k BTU and the 150,000 BTU model?
The primary difference lies in their heating power and flow capacity. The Gasmart E 199k BTU unit delivers 199,000 BTUs, supporting higher simultaneous demand in larger homes. The Gasmart C model offers 150,000 BTUs, which is sufficient for whole-house use but with lower peak output. Choose the higher BTU unit if you need maximum flow for multiple bathrooms.
Which GASLAND natural gas heater is best for small apartments?
The GASLAND 4 GPM Indoor Natural Gas Tankless Water Heater is ideal for small apartments. It features a compact design with a height of just 9.4 inches. This model prioritizes space savings and temperature precision over high-volume output. It fits well in tight spaces where whole-house high-flow capacity is not required.
Do all these GASLAND models require indoor installation?
Yes, all listed GASLAND natural gas tankless water heaters are designed for indoor installation only. You must ensure your location allows for proper indoor venting and gas line access. These units are not weatherproofed for outdoor use. Always verify that your installation space meets the specific indoor requirements for gas appliances.
How much space does the GASLAND Gasmart C 150,000 BTU heater take up?
The Gasmart C model is designed for space-constrained installations. It measures 23.3 inches in height and only 3.54 inches in both width and length. This slim profile allows it to fit into tight areas while still providing whole-house hot water. Its compact dimensions make it suitable for homes where wall space is limited.
What is the flow rate of the GASLAND Compact 4.22 GPM model?
The GASLAND Compact 4.22 GPM Natural Gas Heater provides a flow rate of 4.22 gallons per minute. The product attributes also list this as 4.3 GPM. This capacity is suitable for small homes or apartments with low simultaneous use demands. It provides stable temperatures for limited hot water needs without requiring high power output.
Which model is the heaviest among the listed GASLAND heaters?
The GASLAND Gasmart E 199k BTU Natural Gas is the heaviest unit listed. It weighs 37.5 pounds. In comparison, the Compact 4.22 GPM model weighs 20.9 pounds. Heavier units often indicate more robust internal components for higher capacity. Check your mounting surface to ensure it can support the weight of your chosen model.
Are there any GASLAND natural gas models suitable for outdoor use?
No, all the GASLAND natural gas tankless water heaters in this list are specified for indoor installation only. They lack the weatherproofing required for outdoor environments. Using an indoor unit outdoors can damage the components and void safety standards. You must install these units inside a protected space with proper ventilation.