Boiler Installation in Chicago
Professional boiler installation for homes, condos, and multi-unit buildings in Chicago. We install high-efficiency hot water boilers, steam boilers, and combi-boilers with clean, code-compliant workmanship and upfront pricing.
Fast scheduling. Licensed & insured. Quality guaranteed.
Chicago Heating & Cooling Done Right.
You've Tried Da Rest. Experience the Difference with D's Air & Heating.
Serving homeowners and businesses throughout Chicago and surrounding communities.
Chicago Heating & Cooling Done Right.
You've Tried Da Rest. Experience the Difference with D's Air & Heating.
Serving homeowners and businesses throughout Chicago and surrounding communities.
A properly installed boiler is essential for reliable, even heat in Chicago homes — especially during long, freezing winters. At D's Air & Heating, we provide professional boiler installation for hot-water and steam systems, including Lennox, Weil-McLain, Burnham, Crown, Dunkirk, and other leading brands. Chicago buildings rely heavily on hydronic heating, and a new boiler can dramatically improve comfort, reduce gas usage, eliminate uneven radiator heat, and prevent costly breakdowns. Our installations follow manufacturer specifications and Chicago code to ensure long-term safety, efficiency, and performance.
Our boiler installation process includes full system evaluation, proper sizing, circulator pump setup, zone valve configuration, venting upgrades, expansion tank installation, and complete hydronic balancing. We remove the old boiler, install the new system, purge air from the lines, verify water pressure, test safety controls, and ensure radiators or baseboards heat evenly. Whether you're upgrading to a high-efficiency condensing boiler or replacing an older standard unit, we deliver clear pricing, fast scheduling, and professional workmanship. High-efficiency boilers can significantly lower utility bills with sealed combustion, advanced heat exchangers, and improved AFUE ratings. If your existing system only needs service, our boiler repair team is available same-day.
We also specialize in multi-unit boiler installations, ensuring apartment buildings and multi-family homes receive balanced heat, proper zoning, and dependable performance. For complete system swaps, see our boiler replacement page for full removal and upgrade options. With expert installation and routine maintenance from D's Air & Heating, your new boiler will deliver quiet, efficient, and consistent heat throughout Chicago's coldest months. Contact us for a free installation estimate today.
Boiler Installation Pricing
Upfront pricing — no surprises, no contracts.
$5,500 – $9,500
Hot water or steam boiler installation for single-family homes.
- Removal of old boiler
- New boiler installation
- New gas shutoff valve
- New flue pipe
- New circulator pump (if needed)
- New expansion tank
- New zone valves (if needed)
- System startup & safety check
$8,500 – $14,500
Heating + domestic hot water in one system.
- Removal of old boiler + water heater
- New combi-boiler installation
- New venting system
- New condensate pump
- New gas shutoff valve
- New expansion tank
- Full startup & testing
$12,000 – $35,000
For 2–12 unit buildings.
- Removal of old boiler
- New commercial boiler installation
- New pumps
- New zone controls
- New venting
- System balancing
- Safety & efficiency testing
Boiler Installation Catalog — AHRI & EPA Verified Systems
Every system below is EPA-compliant and AHRI-matched. Pricing includes full installation, startup, and manufacturer warranty. $95.35 service call fee applies to all appointments.
Residential Boilers
Dunkirk
DXL-100
Gas Water Boiler
The Dunkirk DXL-100 is a dependable cast-iron gas water boiler built for Chicago's cold winters. Delivers 100,000 BTU of reliable hydronic heat for single-family homes with radiators or baseboard systems. Heavy-duty construction, simple controls, and long service life.
Dunkirk
XEB-120
Gas Water Boiler
The Dunkirk XEB-120 is a high-output cast-iron boiler ideal for larger Chicago homes and two-flats. At 120,000 BTU with 84% AFUE, it delivers consistent heat across multi-zone radiator and baseboard systems. Built for durability and easy serviceability.
Dunkirk
Royal CO
Residential Combi Modulating Condensing Gas Boiler
The Dunkirk Royal CO is a wall-mounted modulating condensing combi-boiler delivering up to 95.2% AFUE. Provides both space heating and on-demand domestic hot water from a single compact unit with a stainless steel heat exchanger. Ideal for Chicago condos, coach houses, and homes where space and efficiency both matter.
Dunkirk
Royal CH Residential
Residential Modulating Condensing Gas Boiler
The Dunkirk Royal CH Residential is a wall-mounted modulating condensing hot water boiler with up to 95.2% AFUE. Variable-speed modulation reduces fuel consumption and maintains precise comfort across multi-zone radiant and baseboard systems. Ideal for Chicago homeowners looking to cut heating bills and qualify for energy rebates.
Dunkirk
DXL-K
Cast Iron Gas Boiler
The Dunkirk DXL-K is a floor-standing cast-iron atmospheric gas boiler with 84% AFUE. Built for Chicago bungalows and two-flats with existing hot water radiator or baseboard systems. Heavy-duty cast-iron construction provides exceptional heat retention and long service life.
Dunkirk
XEB
Cast Iron Gas Boiler
The Dunkirk XEB is a floor-standing cast-iron gas boiler with up to 84.4% AFUE. Designed for larger Chicago homes and multi-zone hot water systems requiring higher BTU output. Cast-iron sections deliver consistent heat across radiator and baseboard systems with proven durability.
Dunkirk
WPSB Series 4
Cast Iron Gas Boiler
The Dunkirk WPSB Series 4 is a floor-standing cast-iron gas boiler with 84.1% AFUE. Built for Chicago vintage homes with existing hot water radiator or baseboard distribution. The Fuel Smart Hydrostat 3-in-1 control provides outdoor reset, boiler protection, and domestic hot water priority.
Dunkirk
PSB
Cast Iron Steam Boiler
The Dunkirk PSB is a floor-standing cast-iron steam boiler with up to 82.7% AFUE. Purpose-built for Chicago greystones, bungalows, and two-flats with one-pipe or two-pipe steam distribution. Cast-iron sections provide exceptional heat retention and longevity — no system conversion required.
Commercial Boilers
Weil-McLain
LGB 500,000 BTU
Commercial Steam/Hot Water Boiler
Dunkirk
Commercial 750,000 BTU
Commercial Hydronic Boiler
Weil-McLain Commercial Knockdown Boiler Installation
D's Air & Heating, Inc. performs complete knockdown installations for Weil-McLain commercial boilers — including the LGB, 88, and 94 Series. Every knockdown package includes heavy-gauge 8–20" flue kit (1× 90° elbow, 2× 2' straights), secondary LWCO, manual-reset pressure control, B&G FB-38 PRV, Extrol #30 expansion tank (hydronic), full knockdown assembly, burner setup, startup, skim, and chemical treatment.
Available Series:
- Weil-McLain LGB Series — Commercial Steam & Hot Water
- Weil-McLain 88 Series — Cast-Iron Hot Water Boiler
- Weil-McLain 94 Series — High-Efficiency Condensing
Starting at:
$31,035.80 installed
Boiler Types We Install
Why Choose D's Air for Boiler Installation
What's Included in Every Installation
A complete, code-compliant installation from removal to startup.
Boilers We Install
New Boiler Installations by D's Air
Weil-McLain 88 Series
Cast-iron reliability — a Chicago favorite for steam and hot-water systems in two-flats and greystones.
Weil-McLain Residential
High-efficiency residential boilers — properly sized, permitted, and installed for Chicago winters.
Navien Combi-Boiler
Space-saving combi-boiler — heat and hot water in one wall-hung unit, up to 98% AFUE efficiency.
Evergreen High-Efficiency
Modulating condensing boiler — quiet, efficient, and built for Chicago's coldest nights.
Financing Available — $0 Down Options
Get the boiler you need today. Flexible payment plans with approved credit.
Standard Boiler
$89 – $149/mo
Combi-Boiler
$129 – $199/mo
Multi-Unit Boiler
$199 – $399/mo
Financing subject to credit approval. Monthly estimates only — actual terms set by lender.
Our Boiler Installation Process
We install boilers according to manufacturer specifications and Chicago code. Every installation includes proper venting, gas safety checks, system purging, thermostat calibration, and full startup testing. We document old equipment removal, new installation, and final readings.
Lennox Premier dealer
Lennox GWB84 Cast-Iron Hot Water Boiler
84% AFUE · Type B-vent · Sectional cast-iron · 5 sizes from 42k–126k BTU input. Legacy/discontinued line — confirm dealer availability before quoting. NOT compatible with steam radiators. B-vent inspection required before quoting.
LX-BOIL-GWB84-042-INST
GWB84-042 Install
Install Lennox GWB84-042 cast-iron hot water boiler, 42k BTU input, 84% AFUE. Type B-vent, sectional cast-iron, hydronics, gas piping, startup. Confirm dealer availability before quoting — legacy/discontinued line.
Installed from
$5,495
LX-BOIL-GWB84-063-INST
GWB84-063 Install
Install Lennox GWB84-063 cast-iron hot water boiler, 63k BTU input, 84% AFUE. Type B-vent, sectional cast-iron, hydronics, gas piping, startup. Confirm dealer availability before quoting.
Installed from
$5,995
LX-BOIL-GWB84-084-INST
GWB84-084 Install
Install Lennox GWB84-084 cast-iron hot water boiler, 84k BTU input, 84% AFUE. Most common Chicago size. Type B-vent, sectional cast-iron, hydronics, gas piping, startup. Confirm dealer availability before quoting.
Installed from
$6,495
LX-BOIL-GWB84-105-INST
GWB84-105 Install
Install Lennox GWB84-105 cast-iron hot water boiler, 105k BTU input, 84% AFUE. Type B-vent, sectional cast-iron, hydronics, gas piping, startup. Confirm dealer availability before quoting.
Installed from
$6,995
LX-BOIL-GWB84-126-INST
GWB84-126 Install
Install Lennox GWB84-126 cast-iron hot water boiler, 126k BTU input, 84% AFUE. Type B-vent, sectional cast-iron, hydronics, gas piping, startup. Confirm dealer availability before quoting.
Installed from
$7,495
What Chicago Says
Boiler Installation Reviews — D's Air & Heating
"D's Air & Heating installed our new Weil-McLain boiler in one day. Clean work, proper permits, and the heat has been perfect all winter."
Verified Customer
Bridgeport, Chicago
"Darryl explained every option and didn't try to oversell us. D's Air & Heating installed a great boiler at a fair price. Highly recommend."
Verified Customer
Pilsen, Chicago
"Professional installation from start to finish. D's Air & Heating handled everything — permits, removal of the old unit, and a full system test."
Verified Customer
Canaryville, Chicago
15% Off With Our Maintenance Agreement
Sign up for a D's Air Maintenance Agreement and receive 15% off qualifying repairs and upgrades upon acceptance.
Service call charge is for travel and diagnostics only. It is not deducted from the job total.
Chicago's Boiler Installation Experts
Ready to Install a New Boiler?
Get a free estimate — same-day and next-day appointments available across Chicago.
Don't "FREEZE" — Call D's for fast, reliable boiler installation.
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
EPA Certified
Mainstream Engineering
R-410A Certified
Mainstream Engineering
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.
What Chicago Homeowners Should Know About Boiler Installation
How a Hot Water Boiler Works
A hot water (hydronic) boiler heats water and circulates it through pipes to radiators, baseboard convectors, or radiant floor tubing. The water returns to the boiler, is reheated, and recirculates. Modern condensing boilers achieve 90%+ efficiency by recovering heat from exhaust gases that older boilers waste.
Steam vs. Hot Water Boilers
Steam boilers — common in Chicago's older two-flats and greystones — heat water until it becomes steam, which rises naturally through pipes to cast-iron radiators. They require no circulator pump but need precise water level control. Hot water systems are quieter, more efficient, and easier to zone. D's Air installs and services both.
Boiler Sizing and Near-Boiler Piping
Correct boiler sizing requires calculating the heat loss of every room in the building. Oversized boilers short-cycle and cause water hammer in steam systems. Proper near-boiler piping — header design, equalizer pipe, Hartford Loop for steam — is as important as the boiler itself. D's Air follows manufacturer piping diagrams and ASHRAE guidelines on every installation.
Combustion Safety and Venting
Every boiler installation requires proper combustion air supply and flue venting. Inadequate combustion air causes incomplete combustion and carbon monoxide production. Improper venting allows flue gases to back-draft into the living space. D's Air verifies combustion air, draft, and CO levels on every installation.
What to Expect From Your D's Air Boiler Installation
Free Estimate
We inspect your existing system, measure your building, and provide a written quote covering equipment, labor, and permits.
Equipment Selection
We recommend the right boiler type (steam, hot water, condensing, combi) and brand for your building and budget.
Installation Day
Our crew protects your space, removes the old boiler, installs the new system with proper piping, and cleans up completely.
Startup & Testing
We fill the system, purge air, test all safety controls, verify gas pressure, and confirm proper heat distribution.
Customer Training
We explain your new boiler's controls, how to check the water level (steam systems), and what maintenance is needed.
Warranty Support
We register your equipment and remain available for follow-up service and annual maintenance.
D's Air Installation Standards — Every Boiler Job
- Heat loss calculation and proper boiler sizing
- Near-boiler piping per manufacturer specifications
- Hartford Loop installation on all steam systems
- Backflow preventer and expansion tank on all hot water systems
- Gas line pressure test and leak check at all connections
- Flue venting verification — draft, clearances, and termination
- Low-water cutoff test and safety control verification
- Combustion analysis and CO test after startup
- City of Chicago permit pulled on every installation
- Equipment registered for full manufacturer warranty
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."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.
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Lennox Boilers
Lennox Hydronic Boilers for Chicago Homes
Heating your home efficiently starts with choosing the right system. For homes with radiators, baseboards, or in‑floor heating, Lennox boilers deliver reliable, even warmth all winter long. Hydronic heating eliminates drafts, reduces noise, and maintains consistent comfort. High‑efficiency Lennox boilers help lower energy bills while providing dependable performance in Chicago's cold climate. DsAir installs and services all Lennox boiler models, ensuring proper sizing, safe operation, and long‑term reliability.
View Lennox Boiler Models →Explore Boiler Brands
View models, specs, efficiency ratings, and installed pricing for each brand we carry.
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