Crown Boiler Installation in Chicago

Why D's Air & Heating, Inc. for Crown Boiler Installation in Chicago

Chicago's housing stock is unlike anywhere else in the country. The city's two-flats, greystones, brick bungalows, and vintage courtyard buildings were constructed between the 1880s and the 1950s — and the vast majority of them were built with one-pipe or two-pipe steam heating systems that are still in service today. When those boilers fail, homeowners need a replacement that is engineered specifically for steam, not a hot-water unit pressed into service. Crown Boiler Company's BSI cast-iron steam series is purpose-built for exactly this application, and D's Air & Heating, Inc. has been installing Crown boilers across Chicago's neighborhoods since 2009.

The Crown BSI series uses sectional cast-iron construction — the same fundamental technology that has heated Chicago homes for over a century. Cast iron holds heat longer than steel, resists the corrosive effects of steam condensate, and can last 30 or more years with annual maintenance. The BSI-276-ENP, Crown's largest residential steam model, delivers 276,000 BTU of input capacity and 227,000 BTU of output — more than enough to serve a large Chicago two-flat with original cast-iron radiators on both floors. The BSI-225-ENP handles single-family homes and smaller two-flats with the same cast-iron reliability at a lower output rating.

One of the most important features of the BSI series is the included 24V automatic water feeder (TAC.EWF024-1). Steam boilers require a precise water level to operate safely — too little water and the boiler dry-fires; too much and it floods the system with water instead of steam. The automatic water feeder monitors the boiler's water level and adds makeup water as needed, protecting the heat exchanger and extending the life of the equipment. Crown includes this feeder at no additional cost on BSI models — a feature that many competing steam boilers charge extra for or omit entirely.

Electronic spark ignition is standard on all Crown BSI models. There is no standing pilot light to waste gas between heating cycles, and no pilot to relight after a power outage or gas interruption. The electronic ignition system is more reliable than a standing pilot and contributes to the BSI's 82% AFUE rating — a meaningful efficiency improvement over older atmospheric boilers that were common in Chicago homes through the 1990s.

Near-boiler piping is one of the most critical and most frequently mishandled aspects of a steam boiler installation. The Hartford loop, equalizer pipe, header, and wet return connections must be sized and positioned correctly for the boiler to produce dry steam and distribute it evenly to every radiator in the building. D's Air & Heating, Inc. follows Crown's published near-boiler piping guidelines on every installation — not a generic template, but the manufacturer's specific instructions for each BSI model.

Chicago's one-pipe steam systems present unique challenges that not every HVAC contractor is equipped to handle. In a one-pipe system, steam travels up through a single pipe to each radiator and condensate returns down the same pipe by gravity. The air vents on each radiator and the main vents on the steam mains must be sized correctly for the system to balance. D's Air & Heating, Inc. evaluates the existing venting on every one-pipe steam job and recommends vent upgrades where needed as part of the installation scope.

Crown's CWI cast-iron hot-water series serves Chicago homes that were converted from steam to forced hot-water heat, or that were built with baseboard or radiant floor heating from the start. The CWI-5 and CWI-6 use the same sectional cast-iron construction as the BSI steam series, with AFUE ratings of 84% and compatibility with multi-zone hydronic systems. For homeowners who want higher efficiency, Crown's PHNTM condensing series delivers 95% AFUE with modulating output.

Every Crown boiler installation by D's Air & Heating, Inc. includes equipment, labor, permits, and startup. We pull the required City of Chicago mechanical permit, perform the installation to code, and schedule the inspection with the city. The installed price you see is the price you pay — there are no surprise add-ons after the job is done. Call us at (773) 940-0965 or book online for a free estimate.