Steam Boiler
Installation & Repair
Chicago's older housing stock runs on steam. D's Air & Heating, Inc. specializes in single-pipe and two-pipe steam systems — from emergency repairs to full boiler replacements.
IL License #2183457 · D's Air & Heating, Inc. · 549 N Monticello Ave, Chicago, IL 60624
About Steam Boiler Systems
Steam boilers deliver powerful, even heat throughout older Chicago homes using radiators or convectors. Unlike forced-air systems, steam heat requires no ductwork — it uses the home's existing radiator infrastructure.
Chicago's two-flat and greystones were built for steam. When a steam boiler fails or loses efficiency, the right replacement keeps the home's original heating infrastructure intact while delivering modern efficiency and reliability.
D's Air & Heating, Inc. has been servicing Chicago steam systems since 2009. We understand the nuances of single-pipe vs. two-pipe systems, pressure settings, and radiator balancing that most HVAC contractors don't.
What We Install & Service
- Single-pipe or two-pipe steam system installation
- High-efficiency gas steam boilers — modern replacements for aging units
- Improved venting and pressure control for quiet, balanced heat
- Radiator and convector compatibility — no ductwork required
- Full permit pulling and Chicago code compliance
Our Steam Boiler Diagnostic Process
Every service call follows a structured diagnostic workflow — so you get an accurate diagnosis and upfront pricing before any work begins.
System Identification
Confirm single-pipe vs. two-pipe configuration, boiler age, and fuel type.
Safety Check
Gas shutoff, pressure relief valve, low-water cutoff, and CO detector verification.
Visual Inspection
Boiler, piping, radiators, vents, and pressure gauge inspection.
Operational Test
Ignition, burner flame, steam pressure, and radiator heat distribution.
Diagnostics
Pressure issues, venting problems, water level, and radiator air venting.
Options Presented
Repair vs. replacement vs. upgrade — with upfront pricing before any work begins.
Typical Pricing Ranges
All pricing includes labor, permits, and startup. Final price confirmed before work begins. Technical Visit — $95.35 · Don't "FREEZE" — Call D's!
Steam Boiler Comparison
Installed prices include equipment, labor, permits, and startup. No hidden fees — price confirmed before work begins.
Weil-McLain
GSA-282
Thermoelectric Steam Boiler
Key Features
Best For: Large Chicago two-flats, greystones, and multi-radiator homes
Installed Price
$13,795
Includes equipment, labor, permits & startup
Weil-McLain
GMGS-299
Green Mountain Steam Boiler
Key Features
Best For: Large multi-unit buildings and high-demand steam systems
Installed Price
$13,350
Includes equipment, labor, permits & startup
Crown Boiler
BSI-276-ENP
Cast-Iron Natural Gas Steam Boiler
Key Features
Best For: Chicago greystone and two-flat owners replacing aging steam boilers with a proven cast-iron unit
Installed Price
$13,750
Includes equipment, labor, permits & startup
Prices include all labor, permits, and startup. Final price confirmed in writing before any work begins. Technical Visit — $95.35 · Don't "FREEZE" — Call D's!
What Chicago Homeowners Say
Radiators Heat Evenly Now
Our old steam boiler was banging and leaving cold radiators. Darryl replaced it and balanced the whole system. Quiet and efficient now.
Margaret H. — Logan Square
Fast Emergency Response
No heat in January. Darryl came out same day, diagnosed the low-water cutoff, and had us back up and running. Professional and fair.
James T. — Humboldt Park
Knew Our Old System
Not many techs understand steam. Darryl knew exactly what was wrong and explained every step. Best HVAC call we've made.
Rosa M. — Pilsen
Service Call Policy — D's Air & Heating, Inc.
Steam Boiler Problem? Call D's Air.
D's Air & Heating, Inc. · (773) 940-0965 · dsairheating@gmail.com · IL License #2183457
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.
Steam Boiler Expertise — What Chicago Building Owners Should Know
How a Steam Heating System Works
A steam boiler heats water to 212°F, producing steam that rises naturally through supply pipes to cast-iron radiators throughout the building. As the steam gives up its heat, it condenses back to water and returns to the boiler by gravity. One-pipe systems use the same pipe for both steam supply and condensate return. Two-pipe systems use separate supply and return lines, allowing better control and zoning.
The Hartford Loop — Why It Matters
The Hartford Loop is a critical safety piping arrangement on steam boilers. It prevents the boiler from losing its water level if a return pipe develops a leak. Without a properly installed Hartford Loop, a pipe failure can drain the boiler dry, causing catastrophic damage. D's Air installs the Hartford Loop correctly on every steam boiler installation.
Steam Boiler Sizing — EDR Calculations
Steam boilers are sized by Equivalent Direct Radiation (EDR) — the total radiation capacity of all the radiators in the building. The boiler must be sized to match the connected radiation, not the building's heat loss. An oversized steam boiler causes water hammer, wet steam, and rapid cycling. D's Air measures EDR on every steam boiler installation.
Water Quality and Treatment
Steam boiler water quality directly affects system performance and longevity. Impurities cause foaming, which produces wet steam and water hammer. Proper pH balance prevents corrosion of the boiler sections and pipes. D's Air tests water quality and recommends treatment on every steam boiler installation and service call.
Common Steam System Problems
The most frequent steam system issues in Chicago buildings: water hammer (banging pipes — usually caused by wet steam, improper pitch, or failed steam traps), uneven heat between floors (failed vents or traps), boiler cycling on low water (LWCO trips — check water level and return lines), and radiators that won't heat (air-bound — replace the air vent).
What to Expect From Your D's Air Steam Boiler Service
System Assessment
We inspect the boiler, near-boiler piping, Hartford Loop, vents, traps, and radiators before recommending any work.
EDR Measurement
For new installations, we measure every radiator in the building to size the replacement boiler correctly.
Written Estimate
You receive a complete written estimate covering equipment, labor, piping, and permits before any work begins.
Installation
Our crew installs the new boiler with proper near-boiler piping, Hartford Loop, and all safety controls.
Startup & Testing
We fill the system, fire the boiler, verify steam pressure, check all vents and traps, and confirm heat to every radiator.
Customer Training
We explain how to check the water level, what the pressuretrol does, and what maintenance is needed annually.
D's Air Steam Boiler Standards — Every Installation
- EDR calculation — boiler sized to match connected radiation
- Hartford Loop installed per industry standard
- Near-boiler piping per manufacturer specifications
- Equalizer pipe properly sized and connected
- Low-water cutoff tested and verified
- Pressuretrol set to correct operating pressure (typically 0.5–2 PSI)
- All steam vents and traps inspected and replaced as needed
- Water quality tested — treatment recommended if needed
- Gas pressure test and combustion analysis at startup
- City of Chicago permit pulled on every installation
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.