Top 10 Combi Boilers on the Market: A Roundup of the Best Options

Steve Donaldson Master HVAC technician
Steve Donaldson
Master HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

Steve Donaldson Master HVAC technician
Steve Donaldson
Master HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

Hey there! If you're in the market for a combi boiler and not sure which one to choose, you've come to the right place. In this roundup post, I'll be sharing the top 10 combi boilers currently on the market. Whether you're looking for efficiency, reliability, or the latest features, we've got you covered. So, let's dive in and find the perfect combi boiler for your home!

1
Rinnai i060CN Gas Boiler
✯ Great heating option ✯
BUY NOW Amazon.com
8.4
2
Rinnai i150SN Gas Boiler
Impressive and Reliable!
BUY NOW Amazon.com
9.3
3
Noritz NRCB199DV-NG Indoor Combination Boiler
8.3
4
Noble Fire Tube Combi Boiler
8.2
5
Rinnai i090SN Gas Boiler
Great choice!
BUY NOW Amazon.com
8.2
7
IBC SFC 199 Superflow Boiler
7.6
8
Rinnai i120CN Gas Boiler
8
10
Mascot LX Combi Boiler - High Efficiency
Highly recommended
BUY NOW Amazon.com
7.6
1

Rinnai i060CN Gas Boiler

 in stock
Amazon.com
9.3
Great heating option
The Rinnai i060CN Condensing Gas Boiler is an efficient and cost-effective option for heating and hot water needs. It offers easy-to-use controls and the potential for significant savings on gas bills. While there may be occasional flash sales that make it difficult to purchase at full price, overall it is a reliable and high-performing product. Some users have reported error codes, but this seems to be limited to a specific batch with faulty parts.
Efficient Heating Solution
  • Easy to set up and use controls
  • Efficient and cost-effective
  • Can handle multiple functions (heating and hot water)
  • Can result in significant savings on gas bills
  • Potential for flash sales and discounts available
Weaknesses
  • Random flash sales may make it difficult to purchase at full price
  • Some users have experienced error codes, possibly due to faulty parts in a specific batch

The Rinnai i060CN Condensing Gas Boiler is a highly efficient and reliable heating solution for your entire home. With its stainless-steel heat exchanger and modulating wire mesh burner, it provides comfortable heat while also offering a built-in domestic hot water plate heat exchanger for showers and faucets. The smart features of this boiler, such as multizone control capability, make it easy to use and control. It's a cost-effective option that will quickly repay itself in energy savings. Overall, the Rinnai i060CN is a top-notch product that delivers exceptional performance.

Discover the Rinnai Advantage
  • Stainless-steel heat exchanger
  • Modulating wire mesh burner
  • Built-in domestic hot water plate heat exchanger
  • Multizone control capability
2

Rinnai i150SN Gas Boiler

Amazon.com
9.3
Impressive and Reliable!
The Rinnai i150SN Condensing Gas Boiler is an extremely efficient and cost-effective product with self-cleaning stainless-steel heat exchanger, modulating wire mesh burner, and multizone control capability. It is easy to set up and use, and can be paired with a separate hot water system. While finding a discounted price may require waiting for random flash sales, any reported issues can be resolved with a simple reset.
Efficient and Reliable
  • Extremely efficient and cost-effective
  • Can be paired with a separate hot water system
  • Easy to set up and use
Potential Drawbacks
  • Random flash sales may be the only way to find a discounted price
  • Some users have reported receiving error codes, but these issues were resolved with a reset

The Rinnai i150SN Condensing Gas Boiler is an efficient and reliable solution for heating your entire home. With its high AFUE (Annual Fuel Utilization Efficiency), this boiler ensures optimal energy savings. Its smart features, such as multizone control capability, provide convenient control options. The self-cleaning stainless-steel heat exchanger and modulating wire mesh burner deliver comfortable heat and hot water for showers and faucets. This boiler is not only cost-effective but also easy to set up and use. It's a great investment for any home heating needs.

Efficient and Reliable Heating Solution
  • Self-cleaning stainless-steel heat exchanger
  • Modulating wire mesh burner
  • Secondary flat plate heat exchanger
  • Multizone control capability
  • Smart thermostat compatibility
3

Noritz NRCB199DV-NG Indoor Combination Boiler

$2,599.90
Amazon.com
as of April 10, 2024 7:30 am
8.3
Great choice!
The Noritz NRCB199DV-NG Indoor Direct Combination Boiler is a high-quality product that offers simultaneous domestic hot water and heating, superior temperature stability, and easy installation. However, it may have limited availability in some areas and a higher initial cost compared to traditional boilers.
Advantages of the Noritz NRCB199DV-NG
Weaknesses
  • Limited availability in some areas
  • Higher initial cost compared to traditional boilers

The Noritz NRCB199DV-NG Indoor Direct Combination Boiler is the ultimate solution for all your heating needs. With its innovative design and focus on ease and comfort, this boiler provides simultaneous domestic hot water and heating, ensuring superior temperature stability for your hot water needs. The clean burner and easy installation with the new wall bracket make this boiler a convenient choice. Plus, it has been tested and proven to keep up with the cold weather in Michigan, making it a reliable option for any climate. Say goodbye to cold showers and chilly rooms with this powerful and efficient boiler.

Powerful and Efficient Heating Solution
  • Simultaneous domestic hot water and heating
  • Superior temperature stability for domestic hot water
  • Noritz accessory
  • Clean burner
  • Easy to install with new wall bracket
4

Noble Fire Tube Combi Boiler

$6,874.98
Amazon.com
as of April 10, 2024 7:30 am
8.2
Great investment!
The 110,000 BTU Noble Fire Tube Combi Boiler (LP) is a high-efficiency and versatile heating solution that offers exceptional energy savings, reliable performance, and a compact design that maximizes space utilization. Although it may have limited availability in some regions and a slightly higher initial cost, the long-term savings and convenience it provides make it a worthwhile investment.
Efficient and Versatile
  • High efficiency
  • Versatile performance
  • Compact and space-saving design
Drawbacks
  • Limited availability in certain regions
  • Higher initial cost compared to some other models

The 110,000 BTU Noble Fire Tube Combi Boiler (LP) is a top-of-the-line product designed and manufactured by Lochinvar. With the part number NKC110P, this combi boiler is perfect for providing efficient heating and hot water in residential and light commercial applications. Its advanced fire tube heat exchanger technology ensures maximum heat transfer and energy efficiency, while its compact design allows for easy installation and space-saving. Experience the comfort and reliability of this high-quality combi boiler from Lochinvar.

Top-notch heating and hot water!
  • High Efficiency: The Noble Fire Tube Combi Boiler offers exceptional energy efficiency, helping you save on fuel consumption and reduce utility costs. This means more savings for you in the long run
  • Versatile Performance: With a heating capacity of 110,000 BTU, this combi boiler provides reliable and consistent hot water supply for your home or business, ensuring comfort and convenience all year round
  • Compact and Space-saving Design: The Noble Fire Tube Combi Boiler is designed to fit in tight spaces, making it ideal for both residential and commercial applications. Its compact size allows for easy installation and flexibility in placement, maximizing space utilization
$6,874.98
as of April 10, 2024 7:30 am
Amazon.com
5

Rinnai i090SN Gas Boiler

$2,458.56
$2,122.71
Amazon.com
as of April 10, 2024 7:30 am
8.2
Great choice!
The Rinnai i090SN Condensing Gas Boiler is an energy-efficient and durable option that offers easy installation and multizone control capability. While professional installation may be necessary for some, the initial cost may be higher compared to non-condensing boilers.
Efficient and Reliable
  • Energy efficient
  • Easy to install
  • Multizone control capability
  • Durable stainless-steel heat exchanger
Limitations
  • May require professional installation for those without prior experience
  • Initial cost may be higher compared to non-condensing boilers

The Rinnai i090SN Condensing Gas Boiler is an efficient and reliable heating solution for your home. With its high AFUE rating, it ensures superior fuel utilization efficiency. This boiler features a self-cleaning stainless-steel heat exchanger and a modulating wire mesh burner, providing hot water for the entire house. It also offers multizone control capability, allowing you to conveniently adjust the thermostat and control multiple zones. Upgrade your heating system with the Rinnai i090SN and experience efficient and comfortable heating throughout your home.

Efficient and Reliable Heating Solution
$2,122.71
$2,458.56
as of April 10, 2024 7:30 am
Amazon.com
6

Instinct Combi Boiler – Triangle Tube INS199C

$7.99  in stock
Amazon.com
as of April 10, 2024 7:30 am
8.2
Overall, a solid choice
The TRIANGLE TUBE INS199C INSTINCT COMBI BOILER offers efficient modulation of heat output with its high turndown ratio and a wide range of input BTU options. It also has a high AFUE rating and generous heating capacity. However, it has limited warranty coverage and a relatively high initial cost.
Efficient and Reliable
  • High turndown ratio for efficient modulation of heat output
  • Wide range of input BTU options
  • High AFUE rating for energy efficiency
  • Generous heating capacity for effective heating
Potential Drawbacks
  • Limited warranty coverage
  • Relatively high initial cost

The TRIANGLE TUBE INS199C INSTINCT COMBI BOILER is an exceptional heating solution that combines high performance with efficiency. With its all stainless steel fire tube heat exchanger, it provides a continuous supply of hot water at a rate of 5+ gallons per minute, while fully condensing in DHW mode. This boiler is designed to deliver outstanding performance, making it an industry leader. Its compact and sleek design, measuring 16.5 x 21.75 x 33 inches, ensures it can fit seamlessly into any space. Made in the USA by Triangle Tube, the INS199C Instinct Combi boiler is a reliable and efficient choice for your heating needs.

The Perfect Combination of Performance
  • Full modulation with a turndown ratio up to 8:1
  • Min Input (BTU) 24,875
  • Max Input (BTU) 199,000
  • AFUE Rating: 95%
  • DOE Heating Capacity MBH: 184
  • Net AHRI Rating MBH: 159
7

IBC SFC 199 Superflow Boiler

 in stock
Amazon.com
8.1
Highly recommended!
The IBC SFC 199 Superflow Combination Boiler is a contractor-friendly boiler with easy installation, maintenance, and servicing. It has a reduced number of internal parts, making it more efficient and reliable. However, it may come with a higher initial cost and requires professional installation.
Efficient and Reliable
  • Contractor friendly design
  • Easy installation, maintenance, and servicing
  • Reduced internal parts
Downsides
  • Higher initial cost
  • Requires professional installation

Introducing the IBC SFC 199 Superflow Combination Boiler! With only 5 moving parts – the fan, bypass valve, pump, gas valve, and damper – this boiler is designed for simplicity and reliability. IBC's cutting-edge solid-state electronics control the gas valve, fan, and ignition, making servicing a breeze. It's contractor-friendly, easy to install, and maintain, making it unparalleled in the industry. Plus, it comes with a high-efficiency variable ECM speed pump and outdoor reset technology. Trust in the SFC Superflow for all your residential heating needs!

Efficient, Powerful Heating Solution
  • Contractor friendly design
  • Reduced internal parts
  • Easy installation, maintenance, and servicing
  • Only 5 moving parts
  • Included high-efficiency variable ECM speed pump
  • Outdoor reset technology
8

Rinnai i120CN Gas Boiler

$2,798.38
Amazon.com
as of April 10, 2024 7:30 am
8
Great Investment!
The Rinnai i120CN Condensing Gas Boiler is a compact and easy-to-maintain boiler with a stainless-steel heat exchanger and multizone control capability. However, it may be on the pricier side and availability may be limited.
Efficient and Reliable
  • Compact design
  • Easy to maintain
  • Multizone control capability
Drawbacks of Rinnai i120CN Gas Boiler
  • Price
  • Limited availability

The Rinnai i120CN Condensing Gas Boiler is an efficient and reliable solution for heating entire homes. With its high AFUE rating, this boiler ensures optimal fuel utilization efficiency. It features a stainless-steel heat exchanger with a modulating wire mesh burner, providing excellent performance for heating and hot water needs. As an engineer, I am impressed by its compact design and easy maintenance, making it a convenient option for homeowners.

Efficient and Powerful Heating Solution
  • Stainless-steel heat exchanger
  • Modulating wire mesh burner
  • Built-in domestic hot water plate heat exchanger
  • Multizone control capability
$2,798.38
as of April 10, 2024 7:30 am
Amazon.com
9

Noritz NRCB180DV-NG Combination Boiler with Pump

 in stock
Amazon.com
7.6
Overall, excellent choice
The Noritz NRCB180DV-NG Indoor Direct Combination Boiler is a great option for those looking for simultaneous domestic hot water and heating with superior temperature stability. It is easy to install with the new wall bracket, although it may require professional installation. The only downside is its limited space heating capacity.
Efficient and Convenient
Potential Drawbacks
  • Limited space heating capacity
  • May require professional installation

Introducing the Noritz NRCB180DV-NG Indoor Direct Combination Boiler, the most innovative and convenient combi boiler on the market. With our top priority being ease and comfort, this product offers simultaneous domestic hot water and heating, ensuring that you never have to compromise. Experience superior temperature stability for your domestic hot water needs, all thanks to the clean burner and Noritz accessory. Installing this boiler is a breeze with the new wall bracket, making it hassle-free for you. Trust in Noritz to provide you with the best solution for your space heating and hot water needs.

Convenient and Efficient Heating Solution
  • Simultaneous domestic hot water and heating
  • Superior temperature stability for domestic hot water
  • Noritz accessory
  • Clean burner
  • Easy to install with new wall bracket
10

Mascot LX Combi Boiler – High Efficiency

$8,024.98
Amazon.com
as of April 10, 2024 7:30 am
7.6
Highly recommended
The 118,750 BTU Output Mascot LX High Efficiency, Wall Mount Combi Water Tube Boiler (NG or LP) is a highly efficient and versatile boiler that offers a space-saving design. While it may have a higher initial installation cost and require professional maintenance, it provides great energy savings and convenience in the long run.
Efficient Heating Solution
  • High Efficiency
  • Versatility
  • Space-saving Design
Drawbacks
  • Initial installation cost
  • Requires professional maintenance

The 118,750 BTU Output Mascot LX High Efficiency, Wall Mount Combi Water Tube Boiler (NG or LP) is a top-notch product manufactured by Laars. With its sleek design and exceptional efficiency, this boiler is a reliable choice for any heating system. It delivers an impressive output of 118,750 BTU, ensuring efficient heating for your space. The wall mount feature allows for easy installation and saves valuable floor space. Whether you choose natural gas or propane, this boiler is sure to provide reliable and consistent heat, making it the ideal choice for any residential or commercial setting.

Powerful and Efficient Heating Solution
  • High Efficiency: The Mascot LX Boiler offers high efficiency, meaning it maximizes the energy output while minimizing energy waste. This helps you save on your energy bills and reduce your carbon footprint
  • Versatility: This boiler can operate on both natural gas (NG) and liquid propane (LP), giving you the flexibility to choose the fuel that works best for your needs. This ensures convenience and adaptability for different settings
  • Space-saving Design: The wall-mount feature of the Mascot LX Boiler allows you to save valuable floor space. This is especially useful in smaller homes or buildings where space is limited. The compact design ensures easy installation and maintenance
Steve Donaldson Master HVAC technician
Steve DonaldsonMaster HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

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