Peerless MI-X Series Boiler Installation Chicago | D's Air & Heating, Inc.
Peerless® MI-X Series — Chicago, IL
Peerless® MI-X Series — Cast Iron Hot Water Boiler
Heavy-duty cast iron construction built for Chicago's brutal winters. The MI-X delivers reliable hydronic heating for residential and light commercial applications — installed by D's Air & Heating, Inc.
*$95.35 service call fee · No contracts · IL Lic #2183457
Cast Iron Sectional · Natural Gas or Propane
Proven Cast Iron Durability — Decades of Chicago Service Life
Sectional cast iron construction means individual sections can be replaced without pulling the entire boiler — a major advantage in Chicago two-flats and vintage multi-unit buildings with tight mechanical rooms.
*$95.35 service call fee · No contracts · IL Lic #2183457
Full Installation Service · Chicago & Suburbs
Gas-Line Sizing, Near-Boiler Piping & Flue Venting
D's Air & Heating handles complete MI-X installations — gas-line sizing, near-boiler piping, expansion tanks, relief valves, and flue venting across Chicago, Berwyn, Cicero, and Oak Lawn.
*$95.35 service call fee · No contracts · IL Lic #2183457
Upfront Pricing
MI-X Series Models & Pricing
*Local taxes may apply. Financing available.
| Model # | Description | BTU | Sale Price | Installed Price |
|---|---|---|---|---|
| MI-X-03 | Atmospheric Spark w/ Pump | 70,000 BTU | $4,083.88 | $7,283.88 |
| MI-X-04 | Atmospheric Spark w/ Pump | 105,000 BTU | $4,894.30 | $8,094.30 |
| MI-X-05 | Atmospheric Spark w/ Pump | 140,000 BTU | $5,568.35 | $8,768.35 |
| MI-X-06 | Atmospheric Spark w/ Pump | 175,000 BTU | $6,519.83 | $9,719.83 |
| MI-X-07 | Atmospheric Spark w/ Pump | 210,000 BTU | $7,134.86 | $10,334.86 |
| MI-X-08 | Atmospheric Spark w/ Pump | 245,000 BTU | $8,011.96 | $11,211.96 |
| MI-X-09 | Atmospheric Spark w/ Pump | 280,000 BTU | $9,991.65 | $13,191.65 |
Financing Available | *Local taxes may apply
Why D’s Air & Heating, Inc.
Cast Iron Heat Exchanger
Durable cast iron construction built for Chicago hard water and decades of reliable service.
Spark Ignition
Electronic spark ignition — no standing pilot light, lower gas consumption at idle.
Built-in Circulator Pump
Integrated pump simplifies installation and reduces component count.
Easy Service Access
Front-access design makes annual maintenance and service calls straightforward.
Permit Included
Every installation includes City of Chicago mechanical permit and final inspection.
Frequently Asked Questions
What is the Peerless MI-X Series?
The Peerless MI-X is a cast iron sectional hot water boiler designed for residential and light commercial hydronic heating systems. It features atmospheric spark ignition and a built-in circulator pump.
What BTU sizes are available?
The MI-X Series is available in seven sizes from 70,000 BTU (MI-X-03) to 280,000 BTU (MI-X-09), covering most Chicago residential and small commercial applications.
What does the installed price include?
The installed price includes the boiler, labor, standard near-boiler piping, startup, and City of Chicago mechanical permit. Local taxes may apply.
How long does installation take?
Most MI-X boiler replacements are completed in one day. New installations may require an additional day for piping and permit inspection.
Is financing available?
Yes. Financing options are available for qualified customers. Ask about our current financing programs when you book.
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.
Ready to Install a Lochinvar MI-X Boiler?
Book online or call. Same-week scheduling available. Upfront pricing — no surprises.