TDH Mechanical, Heating and Cooling Contractors | Local HVAC Services in Chicago, IL

We believe in fixing the whole problem, not just the symptom. When you call us for a repair, our technicians perform a comprehensive evaluation of your entire heating or cooling system. We examine all components, understanding that parts are often installed at different times and can affect each other. This thorough approach, honed over 30 years, helps us address both the immediate issue and any underlying concerns, preventing future breakdowns and ensuring your Chicago home's system operates reliably.

Short-cycling, where a furnace turns on and off too frequently, is a common issue in Chicago homes, often caused by a dirty filter, improper sizing, or a faulty thermostat. As a local, family-owned company, we see this regularly. Our technicians are trained to diagnose the root cause—not just the obvious one. We'll check the entire system, from airflow and sensors to the heat exchanger, to provide an accurate, lasting repair that improves efficiency and comfort in your home.

Our ownership means your project is personal. Tim, the owner, hand-picks every one of our 15 staff members, ensuring a team with extensive knowledge and a shared commitment to quality. We manage the entire installation process in-house, from the initial estimate to the final test, with no subcontractors. For over three decades, we've specialized in installing systems like furnaces, AC units, and boilers, focusing on proper sizing and integration with your home's existing components for long-term performance.