Dunkirk XEB Boiler Installation in Chicago
Cast iron gas boiler — up to 84.4% AFUE, floor standing, multiple sizes. Built for Chicago's vintage homes and multi-zone hot water systems.
Don't 'FREEZE' — Call D's!
Boiler Type
Cast Iron Gas Boiler
AFUE Efficiency
Up to 84.4% AFUE
Fuel Type
Natural Gas
Heat Exchanger
Cast Iron Sections
Application
Residential & Light Commercial
Venting Type
Category I / B-Vent (Chimney)
Installation Type
Floor Standing
Get Your Free Estimate
High-Output Cast Iron Hot Water Boiler
The Dunkirk XEB is a floor-standing cast iron atmospheric gas boiler engineered for Chicago homes and buildings that require higher BTU output. Available in multiple sizes, the XEB delivers reliable, consistent hydronic heat for larger single-family homes, two-flats, greystones, and multi-zone hot water systems. Cast iron construction provides exceptional heat retention, thermal mass, and corrosion resistance — the foundation of a heating system built to last decades.
Chicago's climate demands a boiler that can perform reliably through extended cold spells. The XEB's heavy-duty cast iron sections with push nipples maintain comfortable temperatures even during the coldest Chicago nights. The atmospheric combustion design is proven, low-maintenance, and compatible with existing chimney venting — making the XEB an ideal direct replacement for older cast iron boilers in Chicago's vintage housing stock.
The XEB is available in multiple sizes to match the heating load of your specific building. Whether you have a large single-family home, a Chicago two-flat, or a multi-zone hot water system, D's Air & Heating will calculate the correct size and ensure your new boiler is properly matched to your existing distribution system. Oversizing or undersizing a boiler leads to inefficiency, comfort problems, and premature equipment failure — proper sizing is critical.
Dunkirk's cast iron construction is the foundation of the XEB's durability. Cast iron resists corrosion and thermal stress, contributing to a service life that can exceed 30 years with proper annual maintenance. The sectional design allows individual section replacement without removing the entire boiler, reducing long-term maintenance costs. Dunkirk backs the XEB with a 20-year non-prorated Cast-to-Last warranty on the heat exchanger.
Key Features
Cast Iron Heat Exchanger
Heavy-duty cast iron sections with push nipples deliver decades of reliable, even heat transfer and superior corrosion resistance.
20-Year Non-Prorated Warranty
Dunkirk's Cast-to-Last warranty covers the heat exchanger for 20 years, non-prorated — among the strongest residential boiler warranties available.
Atmospheric Combustion
Proven atmospheric burner design with automatic redundant gas valve for reliable, low-maintenance operation compatible with existing chimney venting.
High BTU Output
The XEB is sized for larger Chicago homes, two-flats, and multi-zone hot water systems requiring higher BTU output than standard residential boilers.
Easy Serviceability
Sectional cast iron construction allows individual section replacement without removing the entire boiler — reducing long-term maintenance costs.
Chicago Housing Compatible
Floor-standing design fits Chicago basement and utility-room installations. Compatible with existing hot water radiator and baseboard distribution systems.
Technical Specifications
| Model | XEB |
| Boiler Type | Gas Fired Cast Iron Boiler |
| AFUE | Up to 84.4% |
| Fuel | Natural Gas |
| Installation | Floor Standing |
| Application | Residential Hydronic Heating |
| Heat Exchanger | Cast Iron Sections |
| Venting | Category I / B-Vent |
| Warranty | 20-Year Non-Prorated (Cast-to-Last) |
What's Included in the Installation
Trusted American Boiler Technology
Dunkirk has been manufacturing dependable heating equipment in Dunkirk, New York since 1928. For nearly a century, Dunkirk has built a reputation for durable cast iron construction, reliable atmospheric combustion, and heating systems that stand the test of time. The XEB cast iron gas boiler is a direct expression of that tradition — a high-output, floor-standing boiler built for the demands of Chicago's climate and housing stock.
Chicago winters are severe, and larger homes — two-flats, greystones, multi-zone buildings — require a boiler capable of delivering sustained, high-output heat through extended cold spells. The XEB's heavy-duty cast iron sections provide exceptional heat retention and thermal mass, maintaining comfortable temperatures even during the coldest nights. Unlike thin-walled steel boilers, cast iron construction resists corrosion and thermal stress, contributing to a service life that can exceed 30 years with proper maintenance.
Dunkirk's Cast-to-Last 20-year non-prorated warranty on the heat exchanger reflects the company's confidence in its cast iron construction. This is one of the strongest residential boiler warranties available — and it's non-prorated, meaning the full warranty value applies throughout the entire 20-year period. For Chicago homeowners making a long-term investment in their heating system, this warranty provides genuine peace of mind.
The XEB's floor-standing design and Category I venting make it compatible with existing chimney venting in Chicago's older homes — eliminating the need for costly venting upgrades. The atmospheric combustion design is proven, low-maintenance, and reliable. For Chicago homeowners with existing hot water radiator or baseboard systems, the XEB is a direct replacement that works with your existing distribution system.
Why Choose D's Air & Heating, Inc.
D's Air & Heating, Inc. has been providing professional boiler installation, replacement, repair, and maintenance services throughout Chicago since 2009. Founded by Darryl Q. Joyner Sr., D's Air & Heating has built a reputation for honest recommendations, quality workmanship, and professional customer service that Chicago homeowners trust.
Choosing the right contractor is just as important as choosing the right equipment. Unlike contractors who simply swap equipment and leave, D's Air & Heating focuses on complete system performance. Our experienced technicians evaluate your home's heating needs, inspect existing piping and venting, verify proper sizing, and ensure your new Dunkirk XEB is installed correctly for maximum efficiency and long-term reliability.
Every boiler installation includes proper load calculations, startup procedures, safety verification, and customer training so you understand your new system. We pull all required City of Chicago permits, handle disposal of your old equipment, and leave your mechanical room clean. Our technicians are experienced with Chicago's older housing stock — bungalows, two-flats, greystones — and understand the specific requirements of hot water radiator and baseboard systems.
D's Air & Heating operates without contracts and without gimmicks. We provide transparent, upfront pricing before any work begins. When you call for a free estimate, you receive an honest assessment of your heating needs and a clear price — no surprises, no hidden fees.
Common Applications
What Chicago Customers Say
⭐⭐⭐⭐⭐ 4.9/5 Customer Satisfaction
"D's Air installed a Dunkirk XEB in our two-flat and it handles both units without any issues. The house heats up quickly and the radiators are consistent throughout. Professional installation and they handled all the permits."
David L.
Logan Square, Chicago
"We have a large greystone with a multi-zone hot water system and D's Air recommended the Dunkirk XEB. It was the right call — the system heats every zone evenly and our gas bills are reasonable. Great service from start to finish."
Karen W.
Pilsen, Chicago
"Called D's Air when our old boiler finally gave out. They came out quickly, sized the new XEB correctly for our home, and had everything installed and running the next day. Excellent work and fair pricing."
Michael S.
Bridgeport, Chicago
"D's Air has been our HVAC company for years. When it was time to replace our boiler, they recommended the Dunkirk XEB for our larger home. The installation was clean and professional and the new boiler works great."
Lisa T.
Avondale, Chicago
Frequently Asked Questions
How long does a Dunkirk XEB installation take?
Most XEB boiler replacements are completed in a single day. New installations may take one to two days depending on piping and venting complexity. D's Air & Heating minimizes disruption throughout the process.
How efficient is the Dunkirk XEB?
The XEB operates at up to 84.4% AFUE. Its cast iron construction and proven atmospheric combustion deliver reliable, consistent heat with a long service life — making it an excellent value for Chicago homes with existing chimney venting.
Is financing available for an XEB installation?
Yes. D's Air & Heating offers financing options for qualified customers. Ask about current financing programs when you call for your free estimate.
How often should the XEB be serviced?
Annual maintenance is recommended before each heating season. Regular service includes cleaning the heat exchanger, inspecting the burners and controls, checking safety devices, and verifying combustion efficiency.
What warranty comes with the Dunkirk XEB?
The XEB includes Dunkirk's Cast-to-Last 20-year non-prorated limited warranty on the heat exchanger — one of the strongest residential boiler warranties available.
Is the XEB a hot water or steam boiler?
The XEB is a hot water boiler designed for hydronic heating systems with radiators, baseboard heaters, or radiant floor heating.
Does D's Air & Heating pull permits for boiler installations?
Yes. D's Air & Heating pulls all required City of Chicago permits for every boiler installation. Permit processing is included in the installation price.
What is the difference between the XEB and the DXL-K?
Both are cast iron atmospheric gas boilers, but the XEB is designed for higher BTU output applications — larger homes, two-flats, and multi-zone systems. The DXL-K covers a wider size range from 50 to 300 MBH. D's Air will recommend the right model based on your home's heating load.
Explore More Dunkirk Boilers
Compare models, view the full lineup, or schedule your free estimate.
Ready for a New Dunkirk XEB Boiler?
D's Air & Heating provides professional Dunkirk boiler installation throughout Chicago.
Why Chicago Homeowners Trust D's Air & Heating
Licensed & Insured
IL License #2183457
Serving Chicago
Since 2009
Authorized Dealer
Multiple Brands
No Contracts
Ever — Guaranteed
Permit Pulled
Every Installation
Professional Standards
Code-Compliant Work
Why Choose D's Air & Heating, Inc.?
Chicago's trusted HVAC company since 2009 — licensed, insured, and committed to honest workmanship on every job.
Experience Since 2009
D's Air & Heating has served Chicago homeowners and businesses since 2009. Over 15 years of local HVAC experience means we've seen every type of system, every Chicago building configuration, and every challenge the city's climate presents.
Manufacturer-Trained Technicians
Our technicians receive ongoing manufacturer training and certification. We install Lennox, Goodman, Amana, Daikin, Sinclair, Weil-McLain, Peerless, and other leading brands — and we know each system inside and out.
Licensed, Insured & Permitted
D's Air & Heating holds Illinois HVAC License #2183457 and carries full liability insurance. We pull City of Chicago permits on every installation — protecting you legally and ensuring the work meets code.
Honest Recommendations
We tell you what you need — not what generates the highest invoice. If your system can be repaired cost-effectively, we'll say so. If replacement makes more sense, we'll explain exactly why. No pressure, no upselling.
Local Chicago Expertise
We know Chicago's housing stock — two-flats, greystones, bungalows, vintage buildings with steam heat, modern construction with forced air. We size and install equipment for the specific demands of Chicago homes and Chicago winters.
Long-Term Customer Support
Our relationship doesn't end at installation. We register your equipment for warranty, remain available for follow-up questions, and provide ongoing maintenance to keep your system running at peak efficiency for years.
HVAC Education — What Chicago Homeowners Should Know
How Your HVAC System Works Together
A complete HVAC system includes a heating source (furnace or boiler), a cooling source (air conditioner or heat pump), air distribution (ductwork or hydronic piping), and controls (thermostat). Each component must be properly sized and matched to work efficiently. D's Air installs and services all components as a complete system.
Chicago's Climate Demands
Chicago experiences some of the most extreme temperature swings in the country — from -20°F wind chills in winter to 100°F heat indexes in summer. Your HVAC equipment must be sized and installed to handle both extremes reliably. D's Air has served Chicago since 2009 and understands what local homes require.
The Importance of Annual Maintenance
Annual tune-ups extend equipment life, maintain efficiency, and catch problems before they become failures. A well-maintained furnace lasts 20+ years. A neglected one may fail at 12–15 years. D's Air offers annual maintenance plans for both heating and cooling equipment.
Energy Efficiency and Savings
Upgrading from a 10 SEER AC to a 16 SEER unit cuts cooling costs by roughly 37%. Upgrading from an 80% AFUE furnace to a 96% AFUE unit cuts heating costs by about 17%. Over 10–15 years, these savings typically exceed the cost difference between standard and high-efficiency equipment.
What to Expect From D's Air & Heating
Contact
Call or book online. We respond promptly and schedule at your convenience.
Assessment
We evaluate your system, your home, and your needs before making any recommendation.
Written Estimate
You receive a clear, written estimate before any work begins. No surprises.
Professional Work
Our technicians are trained, licensed, and take pride in clean, code-compliant installations.
Testing
We test every system thoroughly before we leave and explain what was done.
Follow-Up
We remain available for questions, warranty support, and future service.
D's Air Professional Standards
- Licensed and insured — IL License #2183457
- Serving Chicago since 2009
- Proper load calculations on every installation
- City of Chicago permits pulled on every installation
- Equipment registered for full manufacturer warranty
- No contracts required — ever
- Transparent pricing — written estimates before any work
- Clean jobsite — we protect your home and clean up completely
What Our Customers Say
Based on Google Reviews — D's Air & Heating, Inc.
Marcus T.
Furnace Replacement
"D's Air & Heating did an outstanding job replacing my furnace. Darryl was professional, on time, and explained everything clearly. The installation was clean and the system works perfectly. Highly recommend."
Latoya W.
Boiler Repair
"Called D's Air when my boiler stopped working in January. They came out the same day, diagnosed the problem quickly, and had it running again within hours. Fair pricing and excellent service."
James R.
AC Installation
"Installed a new central AC system for us this summer. The crew was respectful of our home, cleaned up after themselves, and the system runs quietly and efficiently. Very satisfied."
Sandra M.
Lennox Installation
"D's Air has been our go-to HVAC company for years. They installed our Lennox furnace and have maintained it ever since. Honest, reliable, and they never try to upsell you on things you don't need."
Kevin B.
HVAC Installation
"Professional from start to finish. They pulled the permit, did the installation correctly, and registered the equipment for warranty. That attention to detail is why I keep calling D's Air."
Denise H.
Furnace Repair
"Great experience overall. The technician was knowledgeable and took the time to walk me through the new system. Pricing was transparent with no hidden fees. Would definitely use again."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.