All Temperature Chicago is a full Service Heating & Air-Conditioning Company serving Chicago since 1971. Repair, Service, Installation of complete Heating & Air-Conditioning Systems Custom Duct-Work, Furnace, Boiler, Pipe Fitting, A/C Tune-Ups, with 24 Hour Service & Repair. Heating Service Chicago - Chicagoans know harsh winters; so whether it’s installation of a furnace, boiler, or a quick checkup, All Temperature Chicago will help bring in some warmth for even the coldest of temperatures. A/C Service Chicago- All Temperature will make sure you stay cool and protected under the hot summer sun. For A/C Repair Chicago residents can look forward to the very best service for any HVAC system.