Mobile homes often have less space, lower utility capacities, and different installation needs than traditional houses. If you want hot water without the bulk of a storage tank, a tankless water heater is the perfect upgrade. It heats water only when you turn on the tap, saving energy and space while giving you an endless supply.
In this guide, you will see the best tankless water heaters for mobile homes right away, followed by a practical buying guide, installation tips, and maintenance advice. Everything here is written in simple, clear language so you can decide with confidence.
Top Tankless Water Heater Picks for Mobile Homes
1. Rinnai V65iP Indoor Tankless Water Heater (Propane)
The Rinnai V65iP is a dependable choice for mobile homes that use propane. With a flow rate of up to 6.5 gallons per minute (GPM), it can handle two showers at the same time in warmer climates. Compact and efficient, it’s designed for small spaces without sacrificing performance.
- Best for: Mobile homes with propane fuel
- Pros: High GPM, reliable ignition, space-saving design
- Cons: Requires professional propane installation
2. EcoSmart ECO 18 Electric Tankless Water Heater
For mobile homes that run entirely on electricity, the EcoSmart ECO 18 is an affordable, compact, and efficient option. It delivers up to 4.3 GPM in warmer climates, which is plenty for one shower and a kitchen sink running at the same time.
- Best for: Electric-only mobile homes in mild to warm climates
- Pros: Affordable, wall-mount design, digital temperature control
- Cons: Needs adequate electrical capacity
3. Stiebel Eltron Tempra Plus 24
If you want quiet operation and advanced features, the Tempra Plus 24 is a premium electric model worth considering. It has automatic flow control to keep water temperature steady, even when multiple fixtures are used.
- Best for: Larger mobile homes with higher demand
- Pros: Silent operation, steady temperature, premium build
- Cons: Higher upfront price
4. Rheem RTEX-18 Electric Tankless Water Heater
The Rheem RTEX-18 is a compact, mid-range electric option with a flow rate of up to 4.4 GPM in warm climates. It’s great for small to mid-size mobile homes and features an external digital thermostat for easy control.
- Best for: Everyday household use
- Pros: Compact, efficient, affordable
- Cons: Limited performance in cold climates
5. Camplux 2.64 GPM Outdoor Tankless Water Heater (Propane)
Perfect for seasonal or off-grid mobile homes, the Camplux 2.64 GPM is a portable propane model that mounts outdoors. It’s simple to install and gives you hot water quickly for showers and sinks, making it a great low-cost choice.
- Best for: Seasonal or off-grid setups
- Pros: Portable, lightweight, budget-friendly
- Cons: Lower GPM, needs weather protection
Why a Tankless Water Heater Works Well in a Mobile Home
Mobile homes benefit from tankless heaters in several ways:
- Space savings: Wall-mounted units free up floor space
- Energy efficiency: Water is heated only when needed
- Endless hot water: No running out during a long shower
- Longevity: Often lasts longer than storage tank models
- Fuel flexibility: Available in electric, propane, and natural gas
Key Buying Considerations
1. Fuel Type
Most mobile homes run on electricity or propane. Electric models are easier to install but require proper wiring capacity. Propane models heat faster but need venting and professional setup.
2. Flow Rate (GPM)
A single shower and sink at the same time usually need 3–4 GPM. If you plan to run two showers at once, look for at least 5–6 GPM in warmer climates.
3. Climate
Cold incoming water reduces the effective flow rate. Choose a higher-capacity model if you live in a colder region.
4. Installation Space
Measure available wall space and follow clearance requirements. In small homes, a point-of-use unit for bathrooms or kitchens can also work well.
5. Noise Level
In a compact mobile home, noise can be noticeable. If this is a concern, consider a quiet model like the Stiebel Eltron Tempra Plus series.
Installation Tips for Mobile Homes
- Check your home’s wiring or gas line capacity before buying
- Choose a location that’s easy to reach for maintenance
- Follow manufacturer clearance and venting guidelines
- Hire a professional for high-capacity electric or gas installations
- For outdoor propane units, protect them from weather extremes
Maintenance Advice
Regular maintenance keeps a tankless water heater working efficiently for years:
- Flush the system annually to remove mineral buildup
- Clean inlet filters every few months
- Inspect connections for leaks
- Check venting and exhaust for blockages in gas units
Conclusion
The right tankless water heater can make a mobile home more comfortable, energy-efficient, and modern. If you use propane, the Rinnai V65iP offers excellent capacity and reliability. For electric setups, the EcoSmart ECO 18 provides great value, while the Stiebel Eltron Tempra Plus 24 offers top-of-the-line performance. The Rheem RTEX-18 is a balanced choice for most households, and the Camplux 2.64 GPM is perfect for seasonal or off-grid living.
With the right choice, you can enjoy endless hot water without losing valuable space — exactly what a mobile home needs.