6 Gallon Water Heater

The Best 6 Gallon Water Heater

Here are some of the best 6 Gallon Water Heaters on The Trade Table:

Rinnai RE Series with Smart-Circ™ 6.6 GPM Indoor NCTWH with Recirculation and Pump, LP

The Rinnai RE Series Smart-Circ™ Indoor Tankless Water Heater delivers up to 6.6 GPM of continuous hot water, powered by natural gas with a max input of 160,000 BTUs. Its standout Smart-Circ™ technology learns your hot water usage patterns and automatically schedules recirculation, reducing wait times and energy waste. With built-in recirculation, a compact copper heat exchanger, LED display, and wall-mount design, this unit is ideal for households or businesses seeking high-efficiency performance without the need for an external controller—just pair it with the optional crossover valve if a dedicated return line isn't available.

Eccotemp EL22i Indoor 6.8 GPM Liquid Propane Tankless Water Heater Horizontal Bundle

The Eccotemp EL22i Indoor 6.8 GPM Liquid Propane Tankless Water Heater is a powerful whole-home solution designed for homes or apartments with 1–2 bathrooms. Featuring a sleek black tempered glass front, this unit delivers up to 140,000 BTUs and a maximum flow rate of 6.8 GPM, with touch screen controls and an LED display for easy operation. This bundle includes a 4" horizontal Z-Vent kit with a backflow preventer, making it installation-ready for standard residential hot water demands while maintaining high energy efficiency at 82%.

Frequently Asked Questions About The 6 Gallon Water Heater

Here are some Frequently Asked Questions about the 6 Gallon Water Heater:

What Is A 6 Gallon Water Heater Used For?

A 6 Gallon Water Heater is typically used in small spaces where full-size water heaters won’t fit. It's common in RVs, cabins, boats, and guest suites. These units provide just enough hot water for light daily use like quick showers or washing dishes. They're great for compact, efficient setups that don't need a large water supply.

How Long Does It Take A 6 Gallon Water Heater To Heat Up?

Most 6 Gallon Water Heaters take about 20 to 40 minutes to fully heat the water, depending on the model and power source. Electric models usually take a bit longer than gas ones. If you're reheating after use, it may recover faster depending on how much hot water you used. Always check the specs for your exact heater.

Can A 6 Gallon Water Heater Provide Enough Hot Water For A Shower?

A 6 Gallon Water Heater can usually handle one quick shower. It’s ideal for short, efficient use rather than long showers or multiple users in a row. If you’re mixing hot with cold water, it can stretch a little farther. For anything more than light use, you may need a larger capacity.

Is A 6 Gallon Water Heater Good For RVs?

Yes, a 6 Gallon Water Heater is a popular choice for RVs. It’s compact, efficient, and provides enough hot water for essential needs like showering and washing up. Many models are built specifically for mobile setups. Just make sure the heater is compatible with your RV’s plumbing and power systems.

What Size Breaker Is Needed For A 6 Gallon Water Heater?

Most 6 Gallon Electric Water Heaters need a 15-amp or 20-amp breaker. It really depends on the wattage of the unit—check the manufacturer's instructions. Using the right breaker helps prevent overheating or electrical issues. Always have a professional verify the setup if you're unsure.

How Much Electricity Does A 6 Gallon Water Heater Use?

A 6 Gallon Water Heater usually uses between 1,500 to 2,500 watts. That equals about 1.5 to 2.5 kWh for a full heating cycle. How much it adds to your power bill depends on how often you use it. It's generally considered low to moderate in energy use compared to larger units.

Can I Install A 6 Gallon Water Heater Myself?

You can install a 6 Gallon Water Heater yourself if you’re comfortable with plumbing and basic electrical work. That said, it’s always safest to have a professional do it, especially with electric or gas hookups. Improper installation can lead to leaks, poor performance, or safety issues. Always follow the manual closely if doing it yourself.

What Are The Dimensions Of A Typical 6 Gallon Water Heater?

Most 6 Gallon Water Heaters are compact, usually around 12–15 inches in diameter and 18–20 inches tall. Sizes can vary depending on the model and brand. The smaller size makes them perfect for tight installations. Always measure your space before purchasing.

How Heavy Is A 6 Gallon Water Heater?

A 6 Gallon Water Heater typically weighs between 25 to 35 pounds when empty. Once filled with water, the weight goes up significantly. The lighter weight makes it easier to transport and install compared to full-size models. Always lift carefully or with help.

Is A 6 Gallon Water Heater Energy-Efficient?

Yes, many 6 Gallon Water Heaters are designed with energy efficiency in mind. Smaller tanks use less energy overall, especially if you’re only using it occasionally. Some models also come with insulation and energy-saving modes. Look for Energy Star ratings or specific efficiency labels when buying.

How Often Should I Flush My 6 Gallon Water Heater?

It’s recommended to flush a 6 Gallon Water Heater every 6 to 12 months. Flushing helps remove sediment that can build up and reduce efficiency. It’s a simple process that extends the life of the unit. Regular maintenance like this can prevent costly issues later on.

Does A 6 Gallon Water Heater Need A Pressure Relief Valve?

Yes, a 6 Gallon Water Heater needs a pressure relief valve for safety. It helps release pressure if the water gets too hot or the pressure gets too high. Without it, there's a risk of damage or even explosion. Most models come with one pre-installed or include it in the box.

How Long Does A 6 Gallon Water Heater Last?

A well-maintained 6 Gallon Water Heater can last around 6 to 10 years. The exact lifespan depends on usage, water quality, and maintenance. Regular flushing and checking for corrosion can help it last longer. Once it starts leaking or losing heat quickly, it’s likely time for a replacement.

What’s The Recovery Rate Of A 6 Gallon Water Heater?

The recovery rate depends on whether it’s electric or gas. Electric models recover around 6–10 gallons per hour, while gas models can do 10–15 gallons per hour. This means it can reheat water pretty quickly after use. Always check your unit’s specs for exact numbers.

Can I Replace A 10-Gallon Unit With A 6 Gallon Water Heater?

You can replace a 10-gallon unit with a 6 Gallon Water Heater if your hot water demand is low. Keep in mind you'll have a shorter supply of hot water. It’s fine for single use or short showers but may not work for multiple people. Make sure it suits your lifestyle before downsizing.

Are There Propane Models Of A 6 Gallon Water Heater?

Yes, there are propane-powered 6 Gallon Water Heaters, especially for RVs and off-grid setups. These models heat water quickly and don’t rely on electricity. They’re a good choice when power access is limited. Always ensure proper ventilation and safe fuel connections.

Is A 6 Gallon Water Heater Suitable For Tiny Homes?

A 6 Gallon Water Heater is a solid choice for tiny homes with limited space and low water use. It fits easily in small cabinets or under counters. It provides just enough hot water for basic daily tasks. If your needs are simple, it’s a smart and compact solution.

Where Should I Mount A 6 Gallon Water Heater In An RV?

Common places include under the sink, in storage compartments, or near the plumbing hub. It should be in an area with easy access for maintenance and close to water lines. Always secure it properly to prevent movement while driving. Follow the RV manufacturer’s recommendations if available.

Can A 6 Gallon Water Heater Run On Solar Power?

Yes, a 6 Gallon Water Heater can work with solar if you have the right setup. You’ll need solar panels, a battery bank, and an inverter that supports the heater’s wattage. Some people also use solar water heating systems that preheat the water. It’s an efficient option for off-grid use.

How Much Clearance Does A 6 Gallon Water Heater Need?

Most models need a few inches of clearance on all sides for airflow and safety. Check your manual for the exact requirements. Proper clearance prevents overheating and makes maintenance easier. Don’t install it in a space that’s too tight or poorly ventilated.

What Maintenance Is Needed For A 6 Gallon Water Heater?

You should flush the tank, inspect the anode rod, and check for leaks every 6–12 months. Also, test the pressure relief valve to make sure it’s working right. Keeping the area clean and dry helps prevent corrosion. Routine care goes a long way in keeping the unit efficient.

Why Is My 6 Gallon Water Heater Not Heating Water?

It could be a tripped breaker, faulty thermostat, burned-out heating element, or a gas supply issue. First, check your power or gas source. If everything looks fine and it’s still not heating, the parts may need replacing. A technician can help if you’re unsure.

How Do I Winterize A 6 Gallon Water Heater In An RV?

Drain all water from the tank, disconnect power, and use RV antifreeze if needed. Bypass the heater when winterizing your RV’s plumbing system. This protects the heater from freezing and cracking. Always follow the winterizing steps in your RV manual.

What Kind Of Anode Rod Is Used In A 6 Gallon Water Heater?

Most 6 Gallon Water Heaters use magnesium or aluminum anode rods. Magnesium is better for soft water, while aluminum works well in hard water areas. The anode rod helps prevent tank corrosion. Replacing it every few years extends your water heater’s life.

How Do I Drain A 6 Gallon Water Heater?

Turn off the power and water supply first. Then open the drain valve and let the water flow out, ideally through a hose to a safe drain. Open a hot water faucet to relieve pressure. Once it’s empty, you can flush out sediment or do maintenance.

Is A 6 Gallon Water Heater Noisy During Operation?

It’s usually quiet, but occasional popping or hissing sounds can happen from sediment buildup. These sounds mean it’s time to flush the tank. If it’s unusually loud, something may be loose or faulty. Regular maintenance helps keep it running smoothly.

What Temperature Should I Set On A 6 Gallon Water Heater?

The recommended setting is around 120°F (49°C) for safety and energy savings. This is hot enough for daily use without risking burns. If you need it hotter, you can go up slightly, but be careful. Check the dial or digital panel for adjustments.

Can I Use A 6 Gallon Water Heater In A Food Truck?

Yes, it’s a great option for food trucks that need basic hot water. It’s compact, easy to install, and meets many health code requirements. Just make sure it matches your power supply and water demand. Some areas may have specific codes for water heaters in food trucks.

Does A 6 Gallon Water Heater Need Insulation?

Many already come with built-in insulation, but adding an insulation blanket can help reduce heat loss. This is especially helpful in cold climates or unheated spaces. Just make sure not to cover important components. Check your manual before adding any insulation.

How Do I Know When To Replace My 6 Gallon Water Heater?

If it’s leaking, no longer heating well, or over 10 years old, it might be time to replace it. Strange noises or rusty water are also signs. Regular upkeep helps, but all heaters wear out eventually. Replacing it early can avoid unexpected breakdowns.

Where To Buy A 6 Gallon Water Heater?

You can buy a 6 Gallon Water Heater at The Trade Table.