Authorized Peerless Boiler Dealer Serving Chicago Since 2009
Peerless Residential Hot Water Boiler Comparison
PUREFIRE vs PBC Combi vs MI vs MI-e vs MI-x vs WBV vs EC Series — compare efficiency, capacity, and best applications for Chicago residential hot water heating.
All 7 Series Compared
| Series | Capacity | Efficiency | Best For | Overall |
|---|---|---|---|---|
| PUREFIRE Res. | Up to 399K BTU | Up to 95% AFUE | High-efficiency residential, new construction | ★★★★★ |
| PBC Combi | Up to 280K BTU | ~82% AFUE | Combined space heating and domestic hot water | ★★★★★ |
| MI Series | Up to 280K BTU | ~82% AFUE | Standard residential hot water, proven reliability | ★★★★★ |
| MI-e Series | Up to 280K BTU | ~82% AFUE | Enhanced controls, electronic ignition | ★★★★★ |
| MI-x Series | Up to 280K BTU | ~82% AFUE | Extended features, advanced controls | ★★★★★ |
| WBV Series | Up to 560K BTU | ~82% AFUE | Larger residential, multi-unit buildings | ★★★★★ |
| EC Series | Up to 280K BTU | ~82% AFUE | Economy residential, straightforward replacement | ★★★★☆ |
View Each Series
PUREFIRE Res.
Up to 399K BTU · Up to 95% AFUE
High-efficiency residential, new construction
View DetailsPBC Combi
Up to 280K BTU · ~82% AFUE
Combined space heating and domestic hot water
View DetailsMI Series
Up to 280K BTU · ~82% AFUE
Standard residential hot water, proven reliability
View DetailsMI-e Series
Up to 280K BTU · ~82% AFUE
Enhanced controls, electronic ignition
View DetailsMI-x Series
Up to 280K BTU · ~82% AFUE
Extended features, advanced controls
View DetailsWBV Series
Up to 560K BTU · ~82% AFUE
Larger residential, multi-unit buildings
View DetailsEC Series
Up to 280K BTU · ~82% AFUE
Economy residential, straightforward replacement
View DetailsFrequently Asked Questions
What is the difference between the MI, MI-e, and MI-x Series?
The MI Series is the standard cast-iron hot water boiler. The MI-e adds electronic ignition and enhanced controls. The MI-x extends the feature set further with additional control options. All three use the same cast-iron heat exchanger and cover the same capacity range. The right choice depends on your building's control requirements and budget.
What is the PBC Combi?
The PBC Combi is a combination boiler that provides both space heating and domestic hot water from a single unit. It eliminates the need for a separate water heater, saving space and reducing equipment costs. It is best suited for buildings where domestic hot water demand is moderate.
When should I choose the PUREFIRE over the MI Series?
The PUREFIRE condensing boiler offers up to 95% AFUE versus approximately 82% for the MI Series. For buildings with high heating loads and high gas costs, the efficiency premium can pay back over time. For smaller buildings or buildings with lower heating hours, the MI Series often provides better value.
What is the WBV Series best for?
The WBV Series covers up to 560,000 BTU — larger than the MI, MI-e, MI-x, PBC, and EC Series. It is the choice for larger residential buildings that need more capacity than the standard MI Series can provide.
Peerless residential hot water boilers are available in seven series covering a wide range of applications — from economy replacements to high-efficiency condensing systems and combination space heating and domestic hot water units. All series use cast-iron construction and carry a 10-year heat exchanger warranty.
D's Air & Heating, Inc. installs all Peerless residential hot water series in Chicago. We serve single-family homes, two-flats, three-flats, and larger residential buildings throughout the city and suburbs. Every installation includes a City of Chicago mechanical permit and a complete heat loss calculation. Call (773) 940-0965 for a free in-building estimate.
Not Sure Which Series Is Right?
D's Air & Heating performs a complete heat loss calculation and recommends the right boiler for your Chicago home.
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.
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.