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Heating Boilers Gas Comparison - July 2025
| 1 Best Choice  9.9Exceptional | 2 Best Value 9.8Exceptional | 3  9.7Exceptional | 4 9.6Exceptional | 5  9.5Excellent | 6 9.4Excellent |
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ModelRinnai i090CN Condensing Gas Boiler, Whole Home Heating and Water Natural Gas Heater with Space-Saving Design and Smart Features, (90K BTU) | Model Rinnai i150SN Condensing Gas Boiler, Whole Home Natural Gas Heater with Space-Saving Design and Smart Features, (150K BTU) | Model Gas Heating: Furnaces, Boilers, Controls, Components | Model Rinnai i060CN Condensing Gas Boiler, Whole Home Heating and Water Natural Gas Heater with Space-Saving Design and Smart Features, (60K BTU) | Model Noritz NRCB180DV-NG Indoor Direct Combination Boiler (Standard Vent Convertible) with Built-in Pump, max 180,000 DHW, 9.8 Gpm, 100,000 Btuh Space Heating-Natural Gas | Model Rinnai i090SN Condensing Gas Boiler, Whole Home Natural Gas Heater with Space-Saving Design and Smart Features, (90K BTU) |
BrandRinnai | Brand Rinnai | Brand ESCO Institute | Brand Rinnai | Brand Noritz | Brand Rinnai |
Reviews | Reviews | Reviews | Reviews | Reviews  | Reviews |
Tech Specs | |||||
item weight 79.4 pounds | item weight 68.3 pounds | item weight 1.25 pounds | item weight 10.9 pounds | item weight 95 pounds | item weight 10.9 pounds |
product dimensions 10.9 x 18.5 x 26.4 inches | product dimensions 18.5W x 26.4H | product dimensions - | product dimensions 10.9 x 18.5 x 26.4 inches | product dimensions 12.8 x 18.5 x 27 inches | product dimensions 10.9 x 18.5 x 26.4 inches |
included components Condensing Gas Boiler | included components Condensing Gas Boiler | included components - | included components Condensing Gas Boiler | included components Tankless Water Heater | included components Condensing Gas Boiler |
item package quantity 1 | item package quantity 1 | item package quantity - | item package quantity 1 | item package quantity 1 | item package quantity 1 |
customer reviews5.0 5.0 out of 5 stars 4 ratings 5.0 out of 5 stars | customer reviews 3.9 3.9 out of 5 stars 18 ratings 3.9 out of 5 stars | customer reviews - | customer reviews 3.9 3.9 out of 5 stars 18 ratings 3.9 out of 5 stars | customer reviews 5.0 5.0 out of 5 stars 1 rating 5.0 out of 5 stars | customer reviews 5.0 5.0 out of 5 stars 3 ratings 5.0 out of 5 stars |
batteries required No | batteries required No | batteries required - | batteries required No | batteries required No | batteries required No |
color Combi | color i150SN - Natural Gas | color - | color charcoal | color - | color i090SN - Natural Gas |
warranty description HEX 12 yr / Parts 2 yr / Labor 1 yr | warranty description HEX 12 yr / Parts 2 yr / Labor 1 yr | warranty description - | warranty description HEX 12 yr / Parts 2 yr / Labor 1 yr | warranty description - | warranty description HEX 12 yr / Parts 2 yr / Labor 1 yr |
style Industry, Outdoor | style Industry, Outdoor | style - | style Industry, Outdoor | style - | style Industry, Outdoor |
voltage- | voltage 120 Volts | voltage - | voltage - | voltage 120 Volts | voltage 120 Volts |
Available On  | Available On  | Available On  | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1Rinnai21% OffRinnai i090CN Condensing Gas Boiler, Whole Home Heating and Water Natural Gas Heater with Space-Saving Design and Smart Features, (90K BTU)
Why we love it
Efficient whole-home heating solution.
Smart features enhance usability.
Highly praised reliability.
Main highlights- Whole Home and Water Heater: Heat the whole house with our tankless boilers, featuring a stainless-steel heat exchanger with a modulating wire mesh burner, plus a built-in domestic hot water plate heat exchanger for showers and faucets
- Smart Features: This high-efficiency gas boiler's multizone control capability allows thermostat and integrated control pumps to connect directly to the boiler; Wall mount heater features safety child-lock that automatically turns off central heating
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your boiler; We do not recommend installing a heater without a technician
- Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial standard warranty for heat exchanger, parts, and labor respectively
- Easy Interface: Our energy efficient heater has a digital display main screen, temperature and pressure display, and an outdoor reset sensor with easy parameter settings; Adjust CH temperature between 104°F and 180°F and DHW between 98°F and 140°F
-
9.8
2Rinnai20% Off
Rinnai i150SN Condensing Gas Boiler, Whole Home Natural Gas Heater with Space-Saving Design and Smart Features, (150K BTU)
Why we love it
This boiler can heat your whole house and provide hot water for showers and faucets.
The digital display and easy parameter settings make it user friendly.
The compact, wall mounted design saves space.
Main highlights- Whole Home Heater: Heat the whole house with our tankless boilers, featuring a stainless-steel heat exchanger with a modulating wire mesh burner, and experience energy-efficient warmth and comfort
- Smart Features: This high-efficiency gas boiler's multizone control capability allows thermostat and integrated control pumps to connect directly to the boiler; Wall mount heater features safety child-lock that automatically turns off central heating
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your boiler; We do not recommend installing a heater without a technician
- Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial standard warranty for heat exchanger, parts, and labor respectively
- Easy Interface: Our energy efficient heater has a digital display main screen, temperature and pressure display, and an outdoor reset sensor with easy parameter settings; Adjust CH temperature between 104°F and 180°F and DHW between 98°F and 140°F
-
9.7
3ESCO Institute
Gas Heating: Furnaces, Boilers, Controls, Components
Our ranking system
At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
