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.