Best Ventless Hot Water Heaters

Choosing a hot water heater can feel overwhelming, especially with so many options available. For those who want an efficient solution without the need for venting, ventless hot water heaters are an excellent choice. These heaters provide instant hot water and save space, making them perfect for homes, RVs, or outdoor use.

When selecting the best ventless hot water heater, consider factors like water pressure requirements, heating capacity, and installation space. A great choice should offer reliability, energy efficiency, and ease of use. Understanding these elements will ensure you find a unit that meets your needs.

This article reviews the top five ventless hot water heaters, highlighting their unique features, ideal use cases, and potential drawbacks. Whether you’re looking for something compact for camping or a reliable unit for your home, we’ve got you covered.

Here’s a quick comparison of the key specifications of our top picks:

Features	EXCEL TANKLESS GAS	EXCEL PROPANE LPG	NATURAL GAS EXCEL	CAMPLUX Portable	Propane Water Heater
Fuel Type	Propane LPG	Propane LPG	Natrural Gas	Propane	Propane
Water Pressure Start	2 PSI	15 PSI	15 PSI	3 PSI	3.6 PSI
Flow Rate	1.6 GPM	1.6 GPM	1.6 GPM	1.32 GPM	1.58 GPM
Size (inches)	12.8 x 8 x 18.75	11.5 x 6 x 16	11.5 x 6 x 16	15.8 x 4.9 x 8.6	11.8 x 5.1 x 17.3
Key Feature	Low water pressure startup	LED display	Digital display	Portable design	Lightweight for travel

EXCEL TANKLESS GAS WATER…

The EXCEL Tankless Gas Water Heater is a compact propane unit designed for easy installation and efficient operation. It’s ideal for small homes or spaces with low water pressure. Families needing reliable hot water without the hassle of venting will find this product particularly beneficial.

This model stands out due to its ability to start functioning at just 2 PSI of water pressure, making it a great option for locations where water supply is limited. The exclusive vent-free technology eliminates the need for expensive flues, simplifying installation and reducing costs. Users report that it heats water quickly, providing a constant flow with minimal wait time.

One notable limitation is that it requires specific propane connections, which may necessitate a professional installation if you aren’t familiar with gas appliances. Additionally, its compact size means it may not be suitable for larger households that require higher flow rates.

• Fuel Type: Propane LPG
• Flow Rate: 1.6 GPM
• Water Pressure Start: 2 PSI
• Compact Size: 12.8 x 8 x 18.75 inches
• Vent-Free Technology

Best for: Small homes or spaces needing efficient hot water.

EXCEL PROPANE LPG TANKLES…

The EXCEL Propane LPG Tankless Water Heater is another compact option perfect for tight spaces. It’s particularly suitable for residential settings or recreational uses like RVs. This unit is a solid choice for those who want an easy-to-install water heater without venting hassles.

What sets this model apart is its LED display, which allows users to monitor water temperature and flow easily. It requires a slightly higher water pressure of 15 PSI to start, but it still provides a reliable flow rate of 1.6 GPM. Users appreciate its ease of use and installation, making it a popular choice among DIY enthusiasts.

However, its reliance on a minimum water pressure might be a drawback for some. If your home has fluctuating water pressure, this unit may not perform optimally. Additionally, professional installation might still be necessary for those unfamiliar with propane systems.

• Fuel Type: Propane LPG
• Flow Rate: 1.6 GPM
• Water Pressure Start: 15 PSI
• Compact Size: 11.5 x 6 x 16 inches
• LED Temperature Display

Best for: Homeowners seeking an easy-to-use water heater.

NATURAL GAS EXCEL TANKLES…

This Natural Gas Excel Tankless Water Heater is designed for those who prefer natural gas over propane. It’s ideal for homeowners looking for a reliable, efficient hot water solution without the need for vents. Its compact size makes it suitable for various installations.

Similar to its propane counterparts, this model also features a low water pressure startup of 15 PSI and provides a consistent flow rate of 1.6 GPM. The absence of a flue means you can save on installation costs, and users often find it reliable for daily hot water needs. Its digital display adds convenience by providing real-time temperature readings.

On the flip side, this unit is limited to natural gas connections only, which might not be available in all areas. Users should ensure their gas supply is compatible before purchase. Additionally, installation can still be tricky if you’re unfamiliar with gas appliances.

• Fuel Type: Natural Gas
• Flow Rate: 1.6 GPM
• Water Pressure Start: 15 PSI
• Size: 11.5 x 6 x 16 inches
• Digital Temperature Display

Best for: Homeowners with access to natural gas.

CAMPLUX Portable Tankless…

The CAMPLUX Portable Tankless Water Heater is perfect for outdoor enthusiasts. Weighing just 10 lbs, it’s designed for camping, RVs, or off-grid living. This model is particularly useful for users who need instant hot water while on the go.

This unit offers a flow rate of 1.32 GPM and operates on low water pressure, starting at just 3 PSI. Its portability and easy setup allow for a quick shower anywhere, making it a favorite among campers. Plus, it’s battery-powered, so you don’t need an electrical supply, enhancing its usability in remote areas.

However, its lower flow rate might not be sufficient for multiple users or larger needs simultaneously. Additionally, while it’s great for outdoor use, it may not be as efficient for home installations due to its design and capabilities.

• Fuel Type: Propane
• Flow Rate: 1.32 GPM
• Water Pressure Start: 3 PSI
• Portable Size: 15.8 x 4.9 x 8.6 inches
• Battery-Powered Operation

Best for: Camping and outdoor activities.

Propane Water Heater, 6L…

This lightweight Propane Water Heater offers a compact design ideal for various outdoor activities. Weighing only 9.7 lbs, it’s suitable for RV trips, camping, or outdoor showers. Users appreciate its versatility and ease of transport.

This model provides a flow rate of 1.58 GPM, which is efficient for outdoor use. It operates with a low water pressure startup of 3.6 PSI, ensuring reliable performance even in less-than-ideal conditions. The LED digital display allows for precise temperature adjustments, enhancing user control.

However, its size and output may not be adequate for larger households or continuous use. Users looking for a robust solution for home installations might need to consider larger models. Its reliance on propane means it requires proper handling and storage.

• Fuel Type: Propane
• Flow Rate: 1.58 GPM
• Water Pressure Start: 3.6 PSI
• Compact Size: 11.8 x 5.1 x 17.3 inches
• LED Digital Display

Best for: Outdoor activities and travel.

How We Chose These Products

Our selection process involved evaluating each product’s specifications, user reviews, and real-world performance. We prioritized units that offer reliable hot water delivery, ease of installation, and efficiency. Each heater was assessed on its suitability for different environments, from home use to outdoor activities.

We also considered the manufacturers’ reputations and the availability of customer support. Understanding user needs and preferences helped us pinpoint the best options for a range of consumers, ensuring our recommendations cater to various requirements.

Buying Guide: What Really Matters

When choosing a ventless hot water heater, consider the fuel type. Propane and natural gas are common options, each with distinct connections and installation processes. Ensure your home or RV has the appropriate infrastructure to support your choice.

Water pressure requirements are crucial as well. Some models start effectively at low pressures, while others may need a higher PSI to function correctly. Assess your water supply to ensure compatibility. Additionally, the size and flow rate of the unit should match your household needs, especially if you have multiple users.

Our Top Recommendation

For its combination of efficiency, compact design, and ease of installation, the EXCEL Tankless Gas Water Heater stands out as our top choice. It suits small spaces and low water pressure, making it versatile for various households. For those seeking portable options, the CAMPLUX Portable Tankless Water Heater is a fantastic runner-up, ideal for outdoor activities.

Frequently Asked Questions

What is a ventless hot water heater?
A ventless hot water heater operates without the need for external flues or vents, making it easier to install in tight spaces.

How do I know if my water pressure is sufficient?
Check your water pressure with a gauge; most ventless heaters require between 2 to 15 PSI to operate effectively.

Can I use a propane heater indoors?
Yes, but ensure proper ventilation to avoid carbon monoxide build-up.

How do I maintain a ventless hot water heater?
Regularly check for leaks, clean filters, and ensure all connections are secure. Follow the manufacturer’s guidelines for specific maintenance tips.