
Millhaven Heating & Cooling
Ask For Leonard — They Know Your Steam-heating System By Heart
A modern-day artisanalHVAC contractor specializing in the restoration and installation of ornate cast-iron radiator and steam-heating systems, blending Victorian-era craftsmanship with contemporary digital precision.
Why Millhaven Heating & Cooling
Steam-Powered Precision, Victorian Style
Millhaven Heating & Cooling is the only Chicago-area contractor specializing in ornate cast-iron radiator and steam-heating system restoration and installation. With a master artisan approach rooted in Victorian steampunk aesthetics, we blend old-world craftsmanship with modern functionality — from riveted copper steam-pipe runs to brass-fitted boiler pressure gauge clusters.
Modern Technology for Old-World Systems
While other contractors still rely on outdated diagnostic tools, we utilize a digital thermal imaging scanner specifically calibrated for steam systems. This allows us to detect hidden blockages or inefficiencies in your ornate cast-iron radiator sections before they become major problems — something no legacy HVAC shop could do.
Emergency Response You Can Count On
Our 24/7 emergency line ensures that if your boiler fails at 3am, or a steam-pipe bursts in the middle of winter, we're there. No matter the hour, our team responds fast — because in a city like Chicago, comfort isn’t just a service — it’s a necessity.
Behind the scenes






Our story
Founded in 2018 by Leonard Sokolski, Millhaven Heating & Cooling emerged from a passion for preserving historical heating systems and bringing them back to life with a blend of traditional steampunk aesthetics and smart automation. The company was born out of a desire to restore the lost art of steam heating while embracing new technologies like IoT-enabled boiler monitoring, making old systems work as efficiently as ever.