Model	Flow Rate	Efficiency	Best For	Install	Model
Rinnai RL75iN	7.5 GPM	High	Small spaces	Pro recommended	Rinnai RL75iN
Rheem RTG-84XL	8.4 GPM	Very High	Large families	Pro required	Rheem RTG-84XL
Camplux Pro	5.28 GPM	Moderate	Budget, small homes	DIY possible	Camplux Pro
Noritz NRC66DV	6.6 GPM	High	Medium to large homes	Pro recommended	Noritz NRC66DV
Eccotemp FVI12	4 GPM	Moderate	Small spaces, secondary	Easy DIY	Eccotemp FVI12

Why Propane Tankless Water Heaters Are a Smart Choice

Propane tankless water heaters are like the cool, modern version of the clunky, old-school water heaters. They only heat water when you actually need it, meaning you’re not wasting energy on keeping a big tank of water hot all day. This on-demand system is not just efficient, but it’s also better for your wallet over time. Plus, propane burns cleaner than natural gas or electricity, so it’s a greener option too.

One of the best things about these heaters is their compact size. They don’t need a giant tank, so they can fit in smaller spaces, giving you more flexibility in your home. Whether you want to free up space in your basement or hide the heater away somewhere discreet, a propane tankless system is perfect.

What to Look for When Choosing a Propane Tankless Water Heater

When you’re picking out a propane tankless water heater, there are a few key things you’ll want to keep in mind to make sure you’re getting the best fit for your home.

Flow Rate (GPM)

The flow rate in GPM shows how much hot water a unit delivers. For bigger households or multiple bathrooms, aim for a higher GPM. A 6-9 GPM rate is ideal for using a shower and washing machine at the same time.

Temperature Rise

Temperature rise is simply the gap between your water’s current temperature and where you want it to be. If you live in a colder area, your heater has to put in extra effort, so it’s important to pick a model that can take on the challenge. That way, you can avoid ending up with water that’s just lukewarm.

Energy Efficiency Rating

Energy efficiency is a big deal when choosing a propane tankless water heater. Look for models with high energy efficiency ratings—think Energy Star certified units. These heaters use less energy, which means lower utility bills over time.

Durability and Warranty

You want a heater that’s built to last, right? Go for a model that’s known for its durability and comes with a solid warranty. This way, you’re covered if anything goes wrong.

Installation and Maintenance

Some of these heaters are pretty straightforward to install, but if you’re not super handy, it’s worth having a pro do it. Regular maintenance like descaling and filter cleaning is also important to keep things running smoothly.

The Best Propane Tankless Water Heaters in 2024

Now that you know what to look for, let’s check out some of the best propane tankless water heaters you can get your hands on this year.

Rinnai RL75iN: Compact and Efficient

The Rinnai RL75iN is perfect if you’re tight on space but still want a powerful heater. It’s got a 7.5 GPM flow rate, which is enough for most households. Plus, it’s super energy efficient and has advanced safety features like freeze protection. While it’s a bit pricier upfront, the savings on your energy bills make it a smart investment in the long run.

Rheem RTG-84XLN-1: Best for Big Families

Got a big family or a large home? The Rheem RTG-84XLN-1 is your go-to. With a flow rate of 8.4 GPM, it can handle multiple showers and appliances running at the same time. This model is built to last, and with Rheem’s reputation for reliability, you’re in good hands. Just keep in mind, you’ll want a professional to install it for the best results.

Camplux Pro Series 5.28 GPM: Budget-Friendly and Reliable

If you’re on a budget but don’t want to sacrifice quality, the Camplux Pro Series 5.28 GPM is a fantastic choice. It’s got a solid 5.28 GPM flow rate, which is great for smaller homes or single-use setups. The controls are easy to use, and it’s pretty straightforward to install. However, if you’ve got a bigger household, you might want to look at something with a higher flow rate.

Noritz NRC66DVLP: Advanced and Durable

The Noritz NRC66DVLP is a bit of a powerhouse when it comes to propane tankless water heaters. With a 6.6 GPM flow rate, it’s perfect for medium to large homes. This model comes with advanced features like remote control operation and diagnostics, making it easier to monitor and maintain. Plus, it’s built to last with a solid warranty backing it up.

Eccotemp FVI12-LP: Affordable for Small Spaces

For those with smaller homes or if you’re looking for a secondary water heater, the Eccotemp FVI12-LP is a great pick. It’s affordable and compact, with a 4 GPM flow rate that works well for limited hot water needs. Installation is pretty simple, and it’s an efficient little unit that doesn’t take up much space.

Sizing and Installing Your Propane Tankless Water Heater

Getting the right size propane tankless water heater is crucial to making sure you’ve got enough hot water when you need it. Start by figuring out your total hot water demand. This means adding up the flow rates of everything you might use at the same time—like showers, dishwashers, and washing machines. Once you’ve got that number, pick a heater with a flow rate that can handle it.

When it comes to installation, location matters. You want your heater to be easy to access for maintenance but also protected from extreme weather. Some units can be installed outside, but if you’re in an area with harsh winters, indoor installation with proper venting is the way to go.

Even though doing it yourself might seem appealing, getting a pro to install your propane tankless water heater is usually the way to go. They’ll make sure everything’s done right and safe, sparing you from any potential headaches later on.

Keeping Your Propane Tankless Water Heater in Top Shape

To keep your propane tankless water heater running like new, regular maintenance is key. Descaling the unit to remove mineral buildup is one of the most important things you can do. Depending on your water quality, you might need to do this every six months to a year.

Remember to clean or swap out the filters as well. This helps keep the water running smoothly and avoids any clogs that might mess with your heater. Also, booking a yearly check-up with a professional is a smart move to spot any problems before they turn into costly headaches.

Why You Need a Battery Backup for Your Tankless Water Heater

Even though propane tankless water heaters are super efficient, they still need electricity to power the ignition system, control panel, and other components. When the power goes out, so does your hot water—unless you’ve got a battery backup. A battery backup ensures your heater keeps running, so you’re not left shivering in a cold shower. Plus, it protects your system from power surges and fluctuations.

Battery backups work by storing energy when the power is on and kicking in during an outage. They’re designed to work seamlessly with your heater, so you don’t have to do anything manually when the lights go out.

The Best Battery Backups for Tankless Water Heaters in 2024

Choosing the right battery backup is just as important as picking the right heater. Here’s a look at some top options for 2024.

APC UPS 1500VA: Long Runtime and Easy Setup

The APC UPS 1500VA is a solid choice if you want a reliable, easy-to-install battery backup. It’s got plenty of capacity and a long runtime, so your water heater stays operational during extended outages. It’s also user-friendly and comes from a brand with a great reputation.

CyberPower CP1500PFCLCD: Affordable and Compact

If you’re on a budget, the CyberPower CP1500PFCLCD is a great pick. It’s compact, affordable, and does the job without any fuss. It doesn’t have the longest runtime, but it’s perfect if you don’t have frequent outages or just need something reliable for short power blips.

Tripp Lite SMART1500LCDT: Durable and Solar Compatible

The Tripp Lite SMART1500LCDT stands out because it’s compatible with solar setups. This means you can recharge the battery using solar power, which is awesome if you’re off-grid or just want a more sustainable option. It’s also super durable and built to handle regular use.

Wrapping It Up

Investing in a propane tankless water heater and a reliable battery backup is a great way to ensure you always have hot water, no matter what. By considering your hot water needs, budget, and installation preferences, you can find the perfect setup for your home. The models we’ve covered here are some of the best you can get in 2024, offering something for everyone, from big families to budget-conscious homeowners.

FAQs

How long do propane tankless water heaters typically last?

Propane tankless water heaters usually last between 15-20 years, depending on how often they’re used and how well they’re maintained. Regular maintenance can help extend their lifespan.

Can I install a propane tankless water heater myself?

Even though some models are made for DIY installation, it’s usually smarter to let a professional handle it. That way, you can be sure everything’s set up right and safely, which can save you from headaches down the road.

How much maintenance do battery backups require?

Battery backups are pretty low maintenance. You’ll need to test them periodically and make sure they stay charged, but that’s about it.

Is propane cheaper than natural gas for heating water?

The price gap between propane and natural gas really depends on where you are and what fuel prices are doing at the time. In some places, propane could actually save you money when you factor in installation and upkeep costs.

How can I tell if a battery backup is compatible with my tankless water heater?

Check the manufacturer’s specs for both the battery backup and your water heater. Compatibility info is usually listed in the product documentation, so you can make sure they’ll work together.