Responded to a service call at a residence where the homeowners reported insufficient heating. Upon inspection, I identified a malfunctioning igniter in their furnace, leading to intermittent heating issues. I promptly replaced the faulty component, conducted a comprehensive system check, and ensured the thermostat was calibrated correctly. After completing the repair, the heating system was restored to optimal functionality, providing the homeowners with a warm and comfortable home environment. I also took the time to educate them on regular maintenance practices to prevent similar issues in the future.