When selecting a point of entry tankless water heater system, the goal is to provide consistent hot water directly at the point where it enters your home. The APUS Propane Tankless Water Heater stands out for high BTU output and impressive flow rates, making it ideal for larger households. Meanwhile, the GASLAND Gasmart E offers a high capacity with CSA certification for added safety. For those seeking electric options, the Westinghouse Electric Tankless Water Heater offers WiFi control and convenience. The main tradeoffs involve balancing capacity, fuel type, and installation complexity—continue reading for a detailed breakdown of each option.
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Key Takeaways
- High BTU models like APUS and GASLAND are suitable for larger households with higher hot water demand.
- Electric models are generally easier to install but may have lower flow rates, making them better for small point-of-use needs.
- Certification and safety features like CSA approval are important for reliable operation and peace of mind.
- Flow rate capacity (GPM) is a key factor to match with your household’s hot water needs, especially at the point of entry.
- Price and installation complexity vary widely; balancing upfront costs with long-term efficiency is essential.
| point of entry tankless water heater system | Flow Rate | Voltage |
|---|---|---|
| APUS Propane Tankless Water He | 6.8 GPM | 120 volts |
| ThermoMate 4.5kW Tankless Unde | 0.26GPM-1.0GPM | 120V |
| GASLAND Gasmart E 199,000 BTU | Up to 7.6 GPM | — |
| Westinghouse 6.5kW Electric Ta | — | 240V |
| ThermoMate CZ422LP Propane Tan | Up to 5 GPM | — |
| Rheem RTEX-06T 6.5kW Professio | — | 240V |
| Rheem 3.5kW Point-of-Use Therm | up to 0.5 GPM | 120V |
| GASLAND Gasmart C Propane Gas | 5 GPM | 120 Volt |
| ThermoMate 6kW Tankless Water | 1.07 GPM | 240 volts |
More Details on Our Top Picks
APUS Propane Tankless Water Heater, 140,000 BTU, Up to 6.8 GPM, Indoor
This propane tankless water heater stands out for supporting whole-house hot water needs with a high flow rate of 6.8 GPM and smart features like WiFi remote control. Compared to the GASLAND Gasmart E, it offers more flexibility for larger households due to its higher BTU output and advanced energy-saving modes. The inclusion of zero cold-water delay and safety features makes it reliable for continuous use, but it requires proper cold climate installation to prevent freezing, adding complexity. Its indoor-only design limits outdoor versatility, yet its ease of use and robust performance make it a compelling choice for those seeking a single, high-capacity system. This pick is ideal for families needing reliable, whole-house propane hot water support.Pros:- Supports multiple fixtures simultaneously without temperature fluctuations
- Smart WiFi control for remote operation and monitoring
- High flow rate of 6.8 GPM supports whole-house demands
- Energy-efficient with smart technology
Cons:- Requires professional installation due to complexity
- Limited to indoor use, needing proper cold climate setup
Best for: Large households or homes with multiple bathrooms that require simultaneous hot water from a single system.
Not ideal for: Small apartments or homes in cold climates where proper drainage and freeze protection are challenging.
- Power Source:Liquid Propane
- Flow Rate:6.8 GPM
- Maximum Temperature:140°F
- Wattage:44 watts
- Voltage:120 volts
- Heat Output:140,000 BTU/hour
Our verdict“This model suits larger households seeking a robust, high-capacity propane system with smart controls.”
ThermoMate 4.5kW Tankless Under Sink Water Heater Electric, ETL Approved
This small electric unit excels for point-of-use needs, especially under sinks or for targeted hot water tasks, with a maximum flow of just 1.0 GPM. Unlike the Westinghouse 6.5kW model, it offers a lower power capacity, making it ideal for small spaces but unsuitable for multiple fixtures or showers. Its durable stainless steel build and digital temperature control provide reliability and precision, but its flow rate limits its use to single faucet applications. Easy to install in tight spots makes it perfect for small apartments or office setups, though its limited capacity means it can’t support whole-house demands. This makes it a smart choice for individual sinks or vanity use in compact settings.Pros:- Compact size fits easily under most sinks
- Digital temperature control for precise settings
- Durable stainless steel construction ensures longevity
- Instant hot water for targeted applications
Cons:- Limited flow rate restricts use to single fixtures
- Requires hardwired electrical setup, not plug-and-play
Best for: Homeowners or renters needing instant hot water for a single sink or vanity in tight spaces.
Not ideal for: Households with multiple fixtures or showers, as flow rate is too limited to meet larger demands.
- Power:4500 watts
- Voltage:120V
- Maximum Temperature:131°F
- Flow Rate:0.26GPM-1.0GPM
- Dimensions:10.95″ x 7.4″ x 2.52″
- Waterproof Rating:IP25
Our verdict“This pick is perfect for small-scale, point-of-use hot water needs in compact spaces.”
GASLAND Gasmart E 199,000 BTU Tankless Water Heater, Up to 7.6 GPM, CSA Certified
The GASLAND Gasmart E offers the highest flow rate among these options, supporting up to 7.6 GPM, making it suitable for larger households or busy homes needing continuous hot water. Compared to the APUS model, it provides more raw power and a CSA certification for added safety, but at a higher upfront cost and larger size. Its multiple safety features like overheat and freeze protection enhance reliability, though professional installation is required. This heater is best suited for homes where multiple bathrooms are used simultaneously, but its bulky size and installation complexity might deter smaller or less experienced users. It’s ideal for those prioritizing capacity and durability over simplicity.Pros:- Supports up to 7.6 GPM for simultaneous use
- CSA certified for safety and reliability
- Energy-efficient with a UEF of 0.8
- Space-saving, wall-mounted design
Cons:- Requires professional installation
- Higher upfront cost and size may be a concern
Best for: Large families or homes with high hot water demand and multiple simultaneous fixtures.
Not ideal for: Small apartments or users seeking simple, DIY-friendly systems due to installation complexity.
- BTU:199,000
- Flow Rate:Up to 7.6 GPM
- Certification:CSA
- Installation:Indoor, wall-mounted
- Safety Features:Overheat, flame-out, freeze protection
- Efficiency:UEF 0.8
Our verdict“This system is best for large households needing robust capacity and safety features in a space-efficient package.”
Westinghouse 6.5kW Electric Tankless Water Heater with WiFi Control
Designed for single-point applications, the Westinghouse 6.5kW electric heater offers instant hot water at a small scale, ideal for sinks or small bathrooms. Its WiFi control makes it easy to operate remotely, and its energy efficiency is suitable for targeted use. Compared to the electric ThermoMate unit, it supports a slightly higher wattage, providing a more reliable hot water supply for a single fixture. Its limited capacity means it’s not suitable for showers or multiple outlets, but for quick, on-demand hot water at one point, it excels. The installation requires a licensed electrician, and its size fits neatly under most sinks, making it a practical choice for targeted upgrades.Pros:- Instant hot water for sinks and vanities
- WiFi control compatible with Alexa and Google Home
- Compact size fits under most sinks
- Energy-efficient for single-point use
Cons:- Limited to single fixture use
- Requires professional electrical installation
Best for: Homeowners wanting instant hot water at a single sink or vanity with smart controls.
Not ideal for: Homes needing hot water for multiple fixtures or showers, as capacity is too limited.
- Power:6.5kW
- Voltage:240V
- Dimensions:6.9”x8.1”x2.5”
- Water Temperature Range:80°F-130°F
- Waterproof Rating:IPX4
- Warranty:1 year
Our verdict“Ideal for targeted, single-point hot water needs with smart remote control features.”
ThermoMate CZ422LP Propane Tankless Water Heater Indoor, Up to 5 GPM
The ThermoMate CZ422LP offers reliable hot water support for two simultaneous showers with a flow rate of up to 5 GPM. It provides a good balance between capacity and energy efficiency, with a high thermal efficiency of 98%, surpassing smaller electric options like the Westinghouse unit. Compared to the larger GASLAND Gasmart E, it is more compact and easier to install in indoor spaces, though it’s limited to a maximum of 5 GPM. Its safety features, including wind-resistant design, make it suitable for indoor use where ventilation is managed properly. This makes it an appealing choice for medium-sized households needing propane support without the bulk of larger models.Pros:- Supports two simultaneous outlets reliably
- High thermal efficiency of up to 98%
- Compact and easy to install indoors
- Advanced safety features
Cons:- Requires propane tank and proper ventilation
- Installation may be complex for DIY users
Best for: Medium-sized homes or apartments requiring reliable hot water for two simultaneous outlets.
Not ideal for: Large households or homes with high simultaneous hot water demands exceeding 5 GPM.
- Flow Rate:Up to 5 GPM
- BTU:113,000
- Dimensions:21″H × 13″W × 7″D
- Water Inlet/Outlet:3/4″ NPT
- Gas Inlet:1/2″ NPT
- Vent Connection:3″ OD
Our verdict“This system suits medium-sized households seeking efficient propane hot water with manageable installation requirements.”
Rheem RTEX-06T 6.5kW Professional Classic 240V Point of Use Tankless Electric Water Heater
This model stands out for seamlessly combining compact size with dependable on-demand hot water, making it ideal for small households or specific point-of-use needs. Compared to the ThermoMate 6kW, it offers slightly higher power, enabling better performance for multiple fixtures in tight spaces, though it may require more electrical capacity. Its space-saving design and energy efficiency make it a practical choice, but it depends on a stable 240V supply and may struggle with fluctuating water flow rates. For those prioritizing reliability and proven brand reputation in a limited footprint, this pick offers a balanced mix of features and performance.
Pros:- Provides continuous hot water on demand
- Compact, space-efficient design
- Energy-efficient, heats water only when needed
Cons:- Requires a dedicated 240V electrical circuit
- Limited to point-of-use applications
- Performance can decrease with high water flow rates
Best for: Small households or individual fixtures where space is limited but reliable hot water is essential.
Not ideal for: Homes with multiple simultaneous outlets or inconsistent electrical wiring, as performance may vary with flow rate and power supply constraints.
- Power:6.5 kW
- Voltage:240V
- Type:Tankless Electric Water Heater
- Application:Point of Use
Our verdict“This model is best suited for those needing reliable, space-saving hot water at a single fixture with stable electrical access.”
Rheem 3.5kW Point-of-Use Thermostatic Tankless Electric Water Heater – 120V
This Rheem unit excels for small-scale use, such as supplying a sink or outdoor kitchen, thanks to its modest power and flow rate. Unlike the Rheem RTEX-06T, which supports higher demand, this model is limited to very low flow rates—up to 0.5 GPM—making it ideal for single fixtures. Its digital thermostatic controls allow precise temperature adjustments, and its 120V requirement means no special wiring is needed, simplifying setup. However, its limited capacity makes it unsuitable for anything beyond minimal use, and it’s best for locations where a single outlet is all that’s needed.
Pros:- Energy-efficient, heats water only when needed
- Compact, space-saving design
- No venting required simplifies installation
Cons:- Limited flow rate restricts use to one fixture
- Requires specific electrical wiring and breaker
- Not suitable for high-demand applications
Best for: Single fixture applications like outdoor kitchens, bathroom sinks, or small commercial setups needing precise temperature control.
Not ideal for: Whole-house or multi-fixture scenarios, as its low flow rate cannot meet larger demands or simultaneous use.
- Power:3.5 kW
- Voltage:120V
- Flow Rate:up to 0.5 GPM
- Temperature Range:80°F – 140°F
- Wiring Requirements:120V, 30-amp breaker
Our verdict“Ideal for dedicated small-scale hot water needs where space and ease of installation are priorities.”
GASLAND Gasmart C Propane Gas Tankless Water Heater Indoor, 5 GPM, 113,000 BTU
This propane-powered unit is designed for larger households needing substantial hot water flow, supporting up to 5 GPM, which surpasses electric point-of-use options like Rheem’s smaller models. Its high BTU rating and advanced safety features—such as freeze protection and flame sensing—make it suitable for varied climates and intensive use. While it offers modern touch controls and durable materials, it requires proper venting and installation space, making it less ideal for small or vent-restricted locations. Compared to electric options, it provides higher capacity but demands careful setup and maintenance.
Pros:- High flow rate suitable for whole-home use
- Advanced safety features like freeze protection
- Modern touch screen for easy control and monitoring
- Durable copper heat exchanger for longevity
Cons:- Requires proper venting and installation space
- Higher initial cost and maintenance complexity
- Not suitable for high-altitude installations above 2000 ft.
Best for: Families or small businesses seeking reliable, high-capacity hot water without relying on electric power, especially where electrical capacity is limited.
Not ideal for: Urban apartments with limited ventilation or high-altitude locations above 2000 feet, where venting and performance issues could arise.
- Flow Rate:5 GPM
- BTU:113,000
- Voltage:120 Volt
- Safety Certifications:CSA
Our verdict“Best for larger households needing high-volume hot water with reliable safety and modern controls in well-ventilated spaces.”
ThermoMate 6kW Tankless Water Heater Electric for Sink Washing ETL Listed
This compact 6kW electric heater is tailored for under-sink or countertop installation, making it perfect for quick hot water access in kitchens, salons, or hospitality settings. Its self-modulating technology ensures efficient operation, and the digital temperature control allows precise adjustments, similar to the Rheem RTEX-06T, but with a focus on small, localized demands. While it provides instant hot water, its flow rate—around 1.07 GPM—limits it to single fixtures or small appliances. Installation requires a dedicated 240V circuit, which could be a hurdle for some setups. Compared with larger models, this unit excels in tight spaces but isn’t designed for high-demand scenarios.
Pros:- Instant hot water with high efficiency
- Compact size fits tight spaces
- Digital display for precise temperature control
- Corrosion-resistant components extend lifespan
Cons:- Requires hardwired 240V power and 30A circuit
- Limited flow rate restricts larger demands
- Installation may need professional wiring
Best for: Small-scale point-of-use applications like under-sink hot water for kitchens, salons, or hotel rooms requiring quick, reliable hot water.
Not ideal for: Whole-house hot water needs or multiple fixtures simultaneously, as its flow rate is limited and capacity small.
- Power Source:AC
- Wattage:6000 watts
- Voltage:240 volts
- Flow Rate:1.07 GPM
Our verdict“Ideal for small, localized hot water needs where quick, precise control is more important than volume.”
How We Picked
These products were selected based on their performance, versatility, build quality, safety certifications, and suitability for various household sizes. We prioritized models with a clear balance of flow rate, energy source, and ease of installation. Cost-effectiveness and user safety features also played a key role, ensuring each option offers genuine value for different buyer needs. The ranking reflects how well each system manages hot water demand, reliability, and overall usability in a point of entry context.Factors to Consider When Choosing Point Of Entry Tankless Water Heater System
Choosing the right point of entry tankless water heater involves evaluating several factors that can impact performance, safety, and long-term satisfaction. Beyond initial cost, consider how the system matches your household’s hot water needs, available energy sources, and installation constraints. Proper selection can prevent shortages, reduce energy bills, and avoid costly modifications later on.Flow Rate Capacity (GPM)
Flow rate determines how much hot water the system can deliver at once. For point of entry systems, matching the GPM to your household’s peak demand is critical. Larger families or homes with multiple bathrooms may require models offering 6 GPM or more, while smaller households can opt for lower-capacity units. Choosing a system with too low a GPM can lead to cold water during busy times, so size carefully based on your specific needs.
Fuel Type and Energy Source
Fuel options—propane, natural gas, or electric—impact installation complexity and operating costs. Propane and gas units tend to offer higher flow rates and better performance for whole-home setups but require venting and professional installation. Electric models are simpler to install and maintain but usually support lower GPM, making them suitable for smaller or single-point applications. Consider your available energy infrastructure and future expansion plans when choosing.
Installation and Space Requirements
Point of entry systems should fit within your available space and be compatible with your existing setup. Propane or gas units are bulkier and often need venting, while electric models are compact and easier to mount. Proper ventilation and clearances are essential to prevent safety issues, especially with gas models. Investing in professional installation can reduce errors and ensure code compliance, but it adds to overall costs.
Safety Certifications and Features
Look for units with safety certifications like CSA or ETL to guarantee compliance with safety standards. Features such as automatic shutoff, pressure relief valves, and reliable thermostats protect your household and prolong the system’s lifespan. Skipping certification or safety features might save money initially but could lead to higher risks and maintenance costs over time. Prioritize certified models for peace of mind.
Cost and Long-Term Value
Initial purchase price varies widely, but considering long-term operating costs is equally important. Higher efficiency models may cost more upfront but save money through lower energy bills. Electric units are typically less expensive but may not meet demand for larger households. Balance your budget with your hot water needs to avoid under- or over-investing, and factor in potential maintenance expenses when evaluating value.
Frequently Asked Questions
Can a point of entry tankless water heater supply hot water to multiple fixtures at once?
Yes, but only if the unit’s flow rate capacity matches your household’s simultaneous hot water demand. For example, a unit rated at 6 GPM can typically handle multiple fixtures like a shower, sink, and dishwasher running at the same time. It’s important to match the GPM rating with your peak usage to prevent cold water surprises. For larger households, choosing a higher-capacity model is advisable.
Is a gas or propane unit better than electric for a point of entry system?
Gas and propane units generally deliver higher flow rates and are more suitable for whole-house applications, making them better options for larger families or homes with high hot water demand. Electric models tend to be simpler to install and maintain but are limited in capacity, making them ideal for small setups or single fixtures. Your choice depends on your available energy sources, budget, and household size.
Do I need a professional installer for a point of entry tankless system?
While some electric models are straightforward enough for DIY installation, most gas and propane units require professional installation due to venting, gas connections, and safety considerations. Proper installation ensures safety, compliance with local codes, and optimal performance. Investing in a qualified technician can help avoid troubleshooting problems later and extend the lifespan of your system.
How do I know if a point of entry tankless water heater is energy-efficient?
Look for models with high energy factor (EF) ratings and certifications like CSA or ETL. Energy-efficient units minimize heat loss and operate at optimal efficiency, which reduces utility bills over time. Additionally, features like modulating burners or advanced thermostats help match output to demand, further conserving energy. Always compare the energy ratings before making a purchase.
What should I consider if I want a system that can be upgraded or expanded in the future?
Choose a model with higher flow capacity than your current needs to allow for future household growth. Modular systems or units with compatible accessories can also facilitate upgrades. Keep in mind that larger models may require more space and higher capacity infrastructure, so plan your installation accordingly. Consulting with a professional can help ensure your system remains scalable as your needs evolve.
Conclusion
For households seeking a reliable, whole-home solution, the APUS Propane Tankless Water Heater provides powerful performance at a reasonable price, making it the best overall choice. Those prioritizing affordability and ease of installation might prefer electric options like the Westinghouse Electric Tankless Water Heater for small to medium needs. For larger families or high-demand homes, the GASLAND Gasmart E offers ample capacity and safety features. Beginners should focus on electric models with straightforward installation, while experienced users can consider high-capacity gas units for maximum flow. Your specific household size, fuel availability, and budget will determine the best match for your point of entry hot water system.
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