best gas boilers for home heating

Best Gas Boilers for Home Heating and Endless Water Supply

Ian Mutuli
Updated on
Ian Mutuli

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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With climate change kicking our ass, our seasons are becoming more extreme. Therefore, getting one of these best gas boilers for home heating will help you handle the chills of winter more easily. In addition to having a warm winter, having a reliable boiler can make your home more comfortable.

Gas boilers have evolved and become safer, longer-lasting, and extra efficient.

What is A Gas Boiler?

A gas boiler is a central heating system that continuously heats the water in your home. Your gas boiler can either use on-grid gas or bulk LPG gas that you can store at home. When this gas is burned in the gas boiler's combustion chamber, it warms your water to about 158°F (70°C).

Now, armed with a good idea of how a gas boiler works and why it's important let's look at some of the best gas boilers in the market.

Best Gas Boilers

1. Rinnai V65iN-Natural Gas

Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM,...
  • Endless Hot Water: Our tankless hot water heaters let you enjoy...
  • Energy and Space Efficient Tankless Gas Water Heater: This small...
  • Optimal Water Pressure: This tankless water heater offers a...
  • Professional Installation Recommended: Visit the Find a Rinnai...
  • Guaranteed to Last: 10-, 5-, and 1-year residential factory...

This gas boiler combines value and efficiency in a beautiful way. This Rinnai natural gas water heater is perfect for medium homes and outdoor activities. This gas boiler is easy to install and comes with a great warranty.

The compact nature of these residential boilers makes them convenient to use. Another great thing is that these best gas boilers for home heating are energy-efficient and space-efficient. You'll find that this V65iN - Natural Gas/6.5 GPM boiler only heats your water when necessary.

This boiler is guaranteed to last for years. You get a 10-year warranty for the heat exchanger, a 5-year warranty for labor, and a 1-year warranty for the parts. In addition, these high-efficiency boilers give you great water pressure of up to 6.5 GPM hot water flow rate for a constant and powerful stream.

The scale detection ensures that your gas boiler doesn't get long-term damage without your knowledge.

Pros:

  • Amazing water pressure
  • Great value for money
  • Durable
  • Energy-efficient
  • Space-efficient thanks to the compact design
  • Tankless

Cons:

  • Expensive

2. MIZUDO Propane Gas Tankless Water Heater - Up to 4.3 GPM, 100,000 BTU

Propane Gas Tankless Water Heater, MIZUDO Up to 4.3 GPM...
  • Quality Certification: MIZUDO tankless gas water heater has...
  • Endless Hot Water: Up to 4.3 GPM hot water flow, precise...
  • Premium and Durable: Adopt oxygen-free copper water tank, reduce...
  • Compact Design: Dimensions are H 20.5'' x W 13.0'' x D 7.0''....
  • Energy Conservation: The UEF is higher than 0.81 and consumes...

The MIZUDO Propane Gas Tankless Water Heater is designed for highly effective usage and for the family’s warm water requirements for indoor purposes. This tank has a flow rate of up to 4.3 gallons per minute or 258 gallons per day and comes with a heat exchanger of 100000 BTU allowing homes, businesses, or cabins to have a constant hot water supply. This is well suited to those who are interested in making the change to more efficient hot water tank solutions while at the same time using up minimal space.

The MIZUDO Propane Gas Tankless Water Heater is ideal for buyers who want a highly effective, energy-saving water heating system. Featuring a flow rate of 4.3 GPM and 100,000 BTU, the unit guarantees continuous hot water with better space and energy use efficiency. Some of them are high safety measures, simple temperature regulation systems, and efficient propane gas – making it a favorable solution for homeowners and small businesses who seek to improve their water heating system.

Pros:

  • Only heats water when needed, leading to energy savings.
  • Provides peace of mind with multiple built-in safety mechanisms.
  • Environmentally friendly

Cons:

  • This model is designed for indoor use only

3. GASLAND Outdoors BS211 8L Portable Propane Water Heater

Propane Water Heater 8L, GASLAND Outdoors BS211 2.11...
  • 🎁【On Demand Hot Water】 Maximum power output...
  • 🎁【Energy Saving】 Compact and light weight structure with...
  • 🎁【Lightweight Portable Design】Compact size and lightweight...
  • 🎁【Safety Certificate】Our products were certificated by CSA...
  • 🎁【Important Tips】To avoid gas leakage caused by improper...

The GASLAND Outdoors BS211 8L Portable Propane Water Heater is designed for outdoor applications, providing a flow rate of 2.11 gallons per minute (GPM). This portable propane water heater is ideal for outdoor showers, RV use, and camping, delivering instant hot water on demand. Equipped with safety features like overheating protection, flameout, and anti-freeze, it is engineered for safe and reliable performance.

The GASLAND Outdoors BS211 offers a robust solution for those seeking a higher-capacity portable water heater. Its efficient heating, portability, and improved flow rate make it well-suited for outdoor showers, RVs, and camping. Though it requires an outdoor setup and some maintenance with battery and propane management, its ease of installation and safety features make it a convenient choice for outdoor hot water needs.

Pros:

  • Higher Flow Rate
  • Enhanced Safety Features
  • Portable and Easy to Install
  • Energy Efficient

Cons:

  • Outdoor use only
  • Requires battery ignition

4. CAMPLUX 4.22 GPM Tankless Water Heater Gas, 102,000 BTU

Sale
CAMPLUX 4.22 GPM Tankless Water Heater Gas, 102,000 BTU...
  • 【4.22 GPM Gas Water Heater】It is ideal for compact houses,...
  • 【Temperature Control】The CAMPLUX indoor tankless water heater...
  • 【Anti-Freeze Protection】With 4 heating modules rated at 100W...
  • 【Compact Design】 When compared to tank water heaters, the...
  • 【Easy Installation】CAMPLUX CX422 propane water heater...

The CAMPLUX 4.22 GPM Tankless Water Heater CX422 is a high-capacity propane water heater delivering on-demand hot water with a flow rate of 4.22 gallons per minute and a heating capacity of 102,000 BTU. Designed for indoor use, it is ideal for households or cabins where a continuous supply of hot water is needed for multiple fixtures simultaneously. With a compact design, it saves space compared to traditional tank heaters and incorporates essential safety features for indoor use.

The CAMPLUX CX422 is an excellent choice for those who need an indoor, high-capacity tankless water heater for a household or larger living space. Its high flow rate and reliable heating capacity support multiple water outlets and consistent hot water. While installation may be more involved, and continuous propane and power are required, its efficiency and convenience offer a solid solution for on-demand indoor hot water.

Pros:

  • Energy efficient
  • Compact and space-saving
  • Safety features

Cons:

  • Requires continuous propane supply, which may be inconvenient if not already set up.
  • Installation for an indoor propane heater may require professional setup

5. FOGATTI Propane Gas Tankless Water Heater, Indoor 7.5 GPM

FOGATTI Propane Gas Tankless Water Heater, Indoor 7.5...
  • We recommend that all installations of units must be done in...
  • The tankless design means you don't have to wait 30 minutes for...
  • 170,000 BTU high heating capacity and maximum 7.5 GPM. It is...
  • Using built in forced exhaust fan at the bottom ensures stable...
  • The tankless design is 1/4 the size of a 50 gallon tank water...

These best gas boilers for home heating can heat up to 6.5 gallons per minute. Noritz is a brand that has been around for over six decades and is committed to providing its customers with the best products.

As one of the leading companies in the energy-saving industry, you can expect to save tons of energy by using these condensing boilers. This NORITZ NRC66DV uses an advanced heat exchanger design that offers you superior service.

The built-in controller is also another great innovation that is a game-changer with this condensing boiler. You get a 6' power cord with this purchase to increase the convenience of using it. However, you may need to purchase the IK-WV-200-1-XX-LF valve kit that you require for installation separately.

Pros:

  • Provides high-efficiency service
  • Comes with a 6' power cord and remote thermostat for efficiency
  • Very reliable
  • Has a quiet operation
  • Has a small footprint
  • Easy to follow instructions

Cons:

  • Doesn't come with the IK-WV-200-1-XX-LF valve kit needed for installation

What Are the Types of Boilers?

1. Combi Boiler

The combi boiler is perfect for you if you don't have much space available for your boiler. The combi boiler is efficient and compact. Therefore, you won't need to make so much room to fit it. These combi boilers work as a water heater and a central heating unit.

The combi boilers work by heating your water directly from the pipes. Therefore, you won't need to get a cold water vessel or a hot water storage barrel. The downside of combi boilers is that you can't run two baths or two showers simultaneously.

Therefore, we don't advise you to get a combi boiler if you have a large house. Combi boilers are also great for homes that have single baths. If you have more than one bathroom, you may want to check out our other best gas boilers for home heating.

2. Conventional Boiler

Also known as a traditional boiler or a regular boiler, this boiler consists of a cylinder and a storage tank. This means that unlike with the combi boilers above, you'll have to create more space for this boiler.

The advantage of this is that you can use this boiler if you have a large home. These high-efficiency boilers can provide huge amounts of hot water to several bathrooms simultaneously. If you love saving energy, you'll love that these boilers are compatible with solar thermal arrangements.

Talk about an energy-efficient option.

3. System Boiler

The system boiler is similar to the conventional boiler in that it also needs a hot water storage cylinder. However, it doesn't need a water container. The reason is that many of its features, including the pump and expansion vessel, are integrated into the system.

The best part about these boilers is that they are very easy to maintain. You do not have to deal with a leaky tank like the conventional boilers. You can think of the system boiler as the sweet spot between the combi boiler and the conventional boiler.

We say this because you get to service several bathrooms at once without needing too much space for the boiler. In addition, because it lacks a water tank, you can fit this boiler into the available space you have.

What Do You Consider When Choosing the Best Gas Boilers?

Whether replacing an old boiler or just getting a new boiler altogether, you need to get the one that best suits your needs. In addition, you want to ensure that you are getting the best product from budget to space to the annual fuel utilization efficiency.

Ensure that you read the descriptions properly and get a skilled technician to connect the condensing boilers or steam boilers for you. Then, let's dive into the factors.

1. Size of Home

Whether you're choosing the best gas boilers, steam boilers, or condensing boilers, the number of bathrooms you have will affect the type of boiler you get. This is because your boiler might be the central source of heating in your home.

Like we mentioned above, choose a conventional boiler or a system boiler if you have a large home. However, a combi boiler may be the best option if you have a smaller home with a single bathroom.

2. Hot Water Usage

You may have a small home, but the hot water usage is higher than for someone who has two bathrooms. Therefore, the amount of hot water you use will determine what kind of condensing boiler you'll get. On the other hand, you can get a combi condensing boiler if your water usage isn't that high.

You can also get a system boiler instead of a combination boiler if your hot water usage is large. Also, check the available space available before settling on the natural gas boiler that you want. If you don't have enough space but have high water usage, you can use a system boiler.

3. Energy Efficiency

Most boilers produce steam that can be used for other purposes. Even if you have a natural gas supply, you can benefit from getting a condensing boiler with amazing efficiency. You'll find that a gas-modulating condensing boiler is very energy-efficient.

The boiler system you choose can impact the fuel energy input and save you a lot of money. Therefore, take energy-saving into account when choosing the best gas boiler for you. High-efficiency boilers that are also energy-saving are a godsend.

If your existing boiler takes up too much energy during the hot water heating process, you may need to upgrade. Don't let the boiler pricing deter you. You may be saving more by getting an expensive condensing boiler instead of standard boilers that take up too much energy.

Luckily, we've looked at boiler brands that take energy efficiency seriously. Check the boiler's efficiency before you settle on a brand. If you have a condensing boiler, you'll save over 15% on energy compared to other standard boilers.

Boiler manufacturers are taking efficient heating into account more and more. Non-condensing boilers can cost you more in the long run.

4. Existing Boiler System

If you have hot water boilers or a piece of heating equipment that isn't working for you anymore and you want to upgrade, choose a replacement that will fit well with the existing system. Standard efficiency boilers are a great option because they save energy.

Ask yourself whether you want to keep the same hot water boiler system or get one suited to your home and needs. Consider also if you want a stainless steel heat exchanger or some cast iron heat exchangers.

Frequently Asked Questions (FAQs)

1.  How long should a boiler last?

The best gas boilers for home heating should last around 10-15 years. This is the average life expectancy of a high-quality boiler.

Ensure that you maintain your condensing boiler well to increase its life span.

2. What is the best type of boiler to buy?

The type of boiler depends on your needs and the factors mentioned above. Nonetheless, the combination boiler seems to be a popular choice thanks to its energy-saving and space-saving nature. 

Ian Mutuli

About the author

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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