
D249-400S Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $1800.00 | Condition is Used, Dunkirk D249-400S Natural Gas Boiler, shipping cost = $ | 100.0% |

Introducing the Dunkirk D249-400S Natural Gas Boiler, an exceptional piece of engineering designed to provide reliable and efficient heating solutions for your home. This boiler is the embodiment of advanced technology and meticulous craftsmanship, ensuring comfort and energy savings.
The Dunkirk D249-400S is a high-performance, condensing, natural gas-fired boiler. It boasts an impressive input rating of 400,000 BTUs and a low-temperature input rating of 249,000 BTUs. This versatile boiler caters to both large homes and commercial applications, delivering hot water with unwavering consistency.
Under the hood, this boiler features a robust stainless steel heat exchanger, ensuring durability and corrosion resistance. The boiler's efficiency is further enhanced by its condensing design, which recovers and utilizes the latent heat from the exhaust gases. The result is a significantly lower energy consumption, translating to substantial cost savings over time.
The Dunkirk D249-400S is equipped with a variety of advanced safety features. These include a low water level safety switch, a high temperature limit switch, and a flame rollout safety switch. These features work in tandem to ensure the safe and reliable operation of the boiler at all times.
Adding to its ease of use and installation, this boiler comes with a user-friendly control system. The digital display provides real-time information on boiler operation, temperature settings, and diagnostic information. This level of transparency allows for quick identification and resolution of any potential issues.
In conclusion, the Dunkirk D249-400S Natural Gas Boiler is a high-performance, energy-efficient, and safe choice for your home or commercial heating needs. Its robust construction, advanced features, and user-friendly design make it an exceptional investment for comfort and cost savings.
The Dunkirk D249-400S natural gas boiler is a popular choice for residential heating systems due to its efficiency and reliability. Here are some pros and cons to help you make an informed decision about purchasing this boiler:
Pros:1. High efficiency: The Dunkirk D249-400S boiler has an AFUE (Annual Fuel Utilization Efficiency) rating of up to 95%, which means that 95% of the fuel is converted into heat for your home, and only 5% is lost during the combustion process.
2. Compact design: This boiler has a small footprint, making it suitable for installation in smaller spaces. Its vertical design also allows for easy installation in tight areas.
3. Energy Star certified: This boiler meets the strict energy efficiency guidelines set by the U.S. Environmental Protection Agency (EPA), making it an eco-friendly choice for your home.
4. Durable construction: The Dunkirk D249-400S boiler is built with high-quality materials, including stainless steel and cast iron, which ensures long-lasting performance and reliability.
5. Easy to install: This boiler comes with a factory-installed condensate neutralizer, which simplifies the installation process and reduces the need for additional components.
Cons:1. Higher upfront cost: Natural gas boilers, in general, tend to have higher upfront costs compared to electric or propane boilers. The Dunkirk D249-400S boiler is no exception.
2. Requires regular maintenance: Like all heating systems, natural gas boilers require regular maintenance to ensure optimal performance and safety. This includes annual inspections and cleaning of the heat exchanger.
3. Limited compatibility with renewable energy sources: This boiler is not compatible with renewable energy sources such as solar or geothermal, which may be a concern for those looking to reduce their carbon footprint.
In conclusion, the Dunkirk D249-400S natural gas boiler is an efficient, reliable, and compact heating solution for your home. Its high efficiency rating, Energy Star certification, and durable construction make it an excellent choice for those looking for a long-term investment in their heating system. However, its higher upfront cost and requirement for regular maintenance are important considerations to keep in mind. Ultimately, the decision to purchase this boiler depends on your personal priorities, budget, and heating needs.
If you value high efficiency, compact design, and durability, the Dunkirk D249-400S natural gas boiler may be the right choice for you. However, if you prioritize lower upfront costs, ease of maintenance, or compatibility with renewable energy sources, you may want to explore other options. Ultimately, it's important to weigh the pros and cons carefully and consult with a heating professional to determine which heating system is best for your unique situation.
Details:
Very good condition, working properly, and providing heat to a 3-flat in Chicago. Approximately 5 year old natural gas boiler.
specifications centrafurn:
- brand: Dunkirk
- mpn: D249-400s
- model: Dunkirk D249-400s
- type: Central Furnace
- power source: Ng
- heating system: Boiler
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
returns centrafurn:
- policy: no returns
shipping centrafurn:
payments centrafurn:
- wallet: apple-pay
- other
- credit card: visa
offer centrafurn:
- best offers: true
- in stock #: 1
- availability: in stock
- started: august 24, 2025
- price: $1800.00
- item condition: Used
- sold #: 17
- options: seller-arranged-local-pickup
seller centrafurn:
- # reviews: 83
- rating: 100.0%
- city: elmhurst, illinois
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