Peerless MI Series Commercial Hot Water Boiler Chicago | D's Air & Heating
Authorized Peerless Boiler Dealer Serving Chicago Since 2009
Peerless MI Series Commercial Hot Water Boiler
Budget-friendly cast-iron atmospheric hot water boiler for commercial and institutional buildings. Six models from MI-03 through MI-08. Installed from $13,995. D's Air & Heating, Inc. — IL License #2183457.
Series Overview
The Peerless MI Series is a cast-iron atmospheric hot water boiler offering proven reliability at the lowest installed price in the Peerless commercial hot water lineup. Six models from MI-03 through MI-08 cover commercial hot water heating loads from 105,000 to 280,000 BTU.
D's Air & Heating, Inc. installs Peerless MI Series commercial hot water boilers throughout Chicago. Installed prices start at $13,995 for the MI-03. Contact us for a free in-building estimate.
Models & Pricing
| Model | Input BTU | Output BTU | AFUE | Installed Price | Best For |
|---|---|---|---|---|---|
| MI-03 | 105,000 | 86,000 | ~82% | $13,995 | Small commercial, churches |
| MI-04 | 140,000 | 115,000 | ~82% | $15,495 | Small apartment buildings |
| MI-05 | 175,000 | 144,000 | ~82% | $16,495 | Mid-size commercial buildings |
| MI-06 | 210,000 | 172,000 | ~82% | $17,995 | Larger commercial buildings |
| MI-07 | 245,000 | 201,000 | ~82% | $19,495 | Schools, churches, mixed-use |
| MI-08 | 280,000 | 230,000 | ~82% | $20,995 | Larger commercial, institutional |
*Local taxes may apply. Financing available. Contact for current pricing.
Every Installation Includes
Best Applications
Frequently Asked Questions
What is the Peerless MI Series?
The Peerless MI Series is a cast-iron atmospheric hot water boiler for commercial and institutional applications. It offers proven cast-iron reliability at the lowest installed price in the Peerless commercial hot water lineup.
How does the MI Series compare to the PUREFIRE?
The MI Series costs significantly less upfront ($13,995 vs $29,995 installed) but is less efficient (~82% vs 96%+). For buildings with moderate heating loads or tight budgets, the MI Series is often the right choice.
What is the warranty on the MI Series?
The Peerless MI Series carries a 10-year heat exchanger warranty. Cast-iron boilers routinely last 30+ years with proper maintenance.
Compare all series side-by-side:
Compare All Commercial Hot Water BoilersWhy D's Air & Heating, Inc.
Chicago boiler specialists since 2009. Licensed, insured, and factory-trained. Complete installed packages — boiler, controls, piping, permits, and commissioning.
IL License #2183457 · Serving Chicago Since 2009
Peerless Boiler Installation & Service Experts
D's Air & Heating proudly provides professional Peerless boiler installation, replacement, repair, maintenance, and emergency service throughout Chicago and surrounding communities. Peerless Boilers has earned a reputation for manufacturing dependable, energy-efficient residential and commercial heating systems designed to deliver long-lasting performance and reliable comfort.
Our experienced boiler technicians install and service a wide range of Peerless heating equipment, including cast iron boilers, high-efficiency condensing boilers, steam boilers, and hot water boiler systems. Whether you need a new Peerless boiler installation Chicago homeowners and businesses rely on, complete boiler replacement, annual maintenance, or emergency repair service, D's Air & Heating has the expertise to keep your heating system operating safely, efficiently, and reliably throughout the year.
We help homeowners, property managers, and commercial building owners select the right Peerless boiler for their specific heating requirements, efficiency goals, and budget. Every installation is completed according to manufacturer specifications and local code requirements, ensuring safe, reliable operation and full warranty coverage.
From residential steam and hot water boilers to large commercial boiler systems, D's Air & Heating delivers quality workmanship, expert system design, and dependable customer support backed by Peerless technology and warranty protection. Our Peerless boiler repair Chicago customers trust us for fast diagnostics, genuine parts, and lasting fixes.
Contact D's Air & Heating today at (773) 940-0965 to schedule your free estimate for Peerless boiler installation, replacement, maintenance, or repair services.
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.
Commercial HVAC in Chicago — What Building Owners Should Know
Commercial vs. Residential HVAC
Commercial HVAC systems are designed for larger spaces, higher occupancy loads, and continuous operation. Rooftop packaged units (RTUs) are the most common commercial heating and cooling solution in Chicago — they combine heating, cooling, and ventilation in a single cabinet mounted on the roof. Commercial systems require more complex controls, larger electrical service, and more rigorous maintenance than residential equipment.
Rooftop Unit Selection and Sizing
Commercial RTUs are sized in tons of cooling capacity, from 3 tons for small retail spaces to 50+ tons for large commercial buildings. Proper sizing requires calculating cooling load (heat gain through walls, roof, windows, occupancy, and equipment) and heating load. Oversized RTUs short-cycle, causing temperature swings and premature compressor wear. D's Air performs commercial load calculations on every project.
Permits and Code Compliance
Commercial HVAC work in Chicago requires mechanical permits from the City of Chicago Department of Buildings. Work must comply with the Chicago Building Code, ASHRAE 90.1 energy standards, and ASHRAE 62.1 ventilation requirements. D's Air handles all permit applications and inspections for commercial projects.
Preventive Maintenance Contracts
Commercial HVAC equipment operates year-round under heavy loads. Preventive maintenance — quarterly or semi-annual inspections, filter changes, coil cleaning, belt and bearing checks, refrigerant verification — extends equipment life and prevents costly emergency failures. D's Air offers commercial maintenance contracts tailored to your building's equipment and schedule.
What to Expect From D's Air Commercial HVAC Services
Site Assessment
We visit your building, assess existing equipment and infrastructure, and identify project requirements.
Engineering
We perform load calculations, equipment selection, and permit drawings for your project.
Permitting
We handle all City of Chicago permit applications and coordinate inspections.
Installation
Our commercial crew installs equipment to code, including crane lifts for rooftop units.
Commissioning
We test all equipment, verify airflow and refrigerant charge, and document system performance.
Ongoing Support
We offer preventive maintenance contracts and priority emergency service for commercial clients.
D's Air Commercial HVAC Standards
- Commercial load calculation — cooling and heating
- Equipment selection per ASHRAE 90.1 energy standards
- Ventilation design per ASHRAE 62.1
- City of Chicago mechanical permit on every project
- Crane lift coordination for rooftop equipment
- Curb adapter fabrication for non-standard roof openings
- BAS/BMS integration where required
- Commissioning documentation provided
- Preventive maintenance contracts available
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.