What Size Tankless Water Heater For Mobile Home In 2023?
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Tankless water heaters come in space-saving designs to provide endless hot water, even reducing utility bills.
But it doesn’t mean you can install any size tankless water heater into your mobile home.
So it’s better to learn what size tankless water heater for a mobile home so you can install the perfect unit to enjoy hot water throughout the winter without any issue.
In this post, we have broadly discussed tankless water heaters for home mobiles and suggested the right size.
What Size Tankless Water Heater For Mobile Home?
The size of the tankless water heater depends on the existing room in your mobile home.
If your mobile home has a large space, you can consider a 60-gallon tankless water heater. Otherwise, a 40-gallon tankless water heater will work fine for a small space.
Size | Gallon Size | Recommended Water Heater |
---|---|---|
Small | 20 Gallon | Thermomate On-Demand Instant Hot Tankless Water Heater |
Medium | 40 Gallon | Noritz Indoor Condensing Direct Tankless Hot Water Heater |
Large | 60 Gallon | Rheem RTEX-24 24kW 240V Electric Tankless Water Heater |
The Right Size Tankless Water Heater for a Mobile Home

While determining the tankless water heater for your mobile home, you should consider the one that will fit into the available space.
The available space can be used in two ways when choosing a tankless water heater.
Firstly, determine what is the size of your mobile home and then count the number of bathrooms you have.
Measure your mobile home
Mobile homes vary in dimensions. Therefore, it’s better to measure the width and height of the mobile home manually to get the actual dimension.
You can also ask for suggestions from the local HVAC contractor to find the right model and type suitable for your building.
Number of bathrooms

If your home mobile has just one bathroom, then simply choose a tankless water heater that offers a maximum capacity of gallons per minute.
If your mobile home has plenty of showers or a bathroom, choose a higher capacity tankless water heater with a higher GPM.
It means the unit should be capable of supplying higher amounts of hot water without running out, especially during rush hour.
For example, the tankless water heater will allow a person to take a shower while another is brushing their teeth.
Other considerations
When it comes to choosing the right model of tankless water heater, there are plenty of deciding factors, including the demand for hot water.
Apart from it, you can choose between zoning with one large unit or multiple units.
Fix your budget and lastly, consider whether your tankless water heater needs power venting or not.
As mentioned above, the available space greatly impacts the choice of the right size tankless water heater for a mobile home.
So if your mobile home has a large basement or crawlspace, you can choose an 80-gallon tankless water heater.
But if you have less space, install a 40-gallon tankless water heater.
Why You Should Use A Tankless Water Heater For A Mobile Home?

Choosing the perfect water heater for your property is a tough job.
But investing in a tankless water heater can be a time saver and budget-friendly solution.
Even tankless water heaters are relatively cheaper than typical electric or gas-powered water heaters.
Apart from this, a tankless water heater ensures a constant delivery of hot water. After installation, tankless water heaters will also last for up to 20 years to keep the family warm and cozy during the winter season.
Best Tankless Water Heater For Mobile Home
1. Thermomate Electric Tankless On Demand Instant Hot Water Heater
- [Endless On Demand Hot Water] – Consistent hot water that never runs out when you need it. Continuously detect water temperature and flow rate to ensure efficient heating and stable performance within 1°F of your selected temperature. REQUIRES 2 SET of Double-pole 30AMP Breakers
- [Last Long & No Leaking] – Alloy metal housing & water ports, heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
- [Save Money and Space] – Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces
- [Easy Installation & Safety Protection] – ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
- [Installation] – 11 kilowatts at 240V draws max 46amp, 1/2” NPT male ports, 12AWG wire to 2 Double-pole 30AMP breakers, ideal for providing hot water for a bathroom, small sink, office break room and other point-of-use or low-flow applications
2. Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater
- Endless hot water
- Can be vented with Schedule 40 PVC Pipe and Fitting
- High Efficiency
- Low Nox
- Remote thermostat & 6′ power cord included
3. Rheem RTEX-24 24kW 240V Electric Tankless Water Heater For Mobile Home
- ON/OFF Dial Control with adjustable digital temperature display
- Self-modulating power control
- 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
- Bottom 3/4″ NPT water connections
- On demand, consistent and continuous hot water
FAQs About Right Size Tankless Water Heater For Mobile Home
Can I Use A Regular Water Heater In My Mobile Home?
No, you can’t install a regular water heater in your mobile home. The reason is that water heaters for mobile homes must be approved by HUD for safety concerns.
How Powerful A Water Heater Is Compatible With A Mobile Home?
Typically, a mobile home uses 120-volt water heaters to fulfill the demand for a higher amount of hot water.
Do Mobile Homes Require Special Water Heaters?
Following the HUD’s Homeowners’ Center, you can only install a water heater in your mobile home that doesn’t have an adjustable temperature function. Even the water heater shouldn’t have an adjustable pressure-relief valve.
Final words
Whether you are buying a new tankless water heater or other systems for your home mobile, determine how much space you have. The number of family members is also impacted by the size and the capacity of the new home improvement system.
Hopefully, you have learned what size tankless water heater for a mobile home and you are confident enough to find it.
Last but not least, don’t forget to judge the quality, design, and capacity of the tankless water heater before making the final call.