Services
01Commercial Multi-Family Furnace Maintenance & RepairSpecialized furnace servicing for large apartment complexes and multi-unit rental properties. I handle all makes and models of commercial-grade furnaces, from 60,000 to 200,000 BTU units. With over 28 years in the industry, I’ve worked with dozens of property managers across Chicago, ensuring your buildings stay warm during harsh winters and efficient throughout the year.
02Multi-Family Air Conditioning System Installation & ServiceComplete AC system setup and repair for apartment buildings, including rooftop units, split systems, and central chillers. I work specifically with multi-family HVAC equipment that serves 20+ units at once — not just individual homes. My clients include property managers who own portfolios of 10 or more buildings.
03Emergency No-Heat/No-Cool Response for Commercial Tenants24/7 emergency call line dedicated to urgent heating and cooling failures affecting commercial multi-family tenants. Whether a furnace breaks down in a 50-unit complex during a Chicago blizzard or an AC unit fails in a 30-unit building during a heat wave, I provide rapid response service that keeps residents comfortable and landlords compliant.
04Preventive Maintenance Programs for Multi-Unit PropertiesTailored annual maintenance contracts designed for commercial apartment complexes and institutional property managers. These programs include seasonal tune-ups, filter replacements, duct inspections, and system diagnostics to prevent costly breakdowns and extend equipment lifespan across large buildings.
05Multi-Family HVAC System Upgrades & ModernizationHelping landlords modernize aging HVAC systems in multi-family properties with energy-efficient upgrades. From replacing outdated boilers and chillers to installing smart thermostats that control temperature per building section, I focus on solutions that reduce long-term costs while improving tenant satisfaction.
Our story
Kevin Brennan founded K & B HEATING AND COOLING SERVICE in 1998 after years of managing complex HVAC systems for a large retail chain. His deep understanding of how to streamline maintenance across multiple buildings led him to focus exclusively on serving property managers, restaurant groups, and institutional landlords who need consistent, scalable support.
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Centralized system monitoring for multi-building portfolios
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Specialized in commercial HVAC optimization for retail and office complexes
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Direct ownership and hands-on management of all service calls