Lashbrook Mechanical was built on hands-on furnace repair and performance diagnostics throughout Southeast Michigan. With over 15 years in the HVAC field — including formal training, advanced certifications, and field instruction experience — our foundation is centered on understanding how heating systems truly operate under load.
In Ann Arbor homes, we do not treat furnace repair as a quick part swap. We diagnose the entire heating system. That includes evaluating airflow, total external static pressure, fuel delivery, ignition sequence, combustion performance, safety controls, and system control logic before making any repair recommendations.Many furnace failures are symptoms — not root causes. Our approach is to identify why the failure occurred so the repair actually lasts.That technical discipline is what separates professional furnace repair from rushed service calls. Accurate diagnostics. Correct repairs. Safe and reliable winter performance.
Properly sized and airflow-balanced systems engineered for Michigan winters.
Performance testing that prevents mid-season breakdowns.
From ignition faults and limit trips to airflow restrictions and control board failures, we diagnose accurately and explain your options clearly. Emergency service available when winter can’t wait.
