You need to take note of any problems that started to arise even if the house’s heating, ventilation, and airconditioning system (HVAC) was mostly on cooling duty during the summer. A slight test run through emergency furnace repair in Toronto can yield some questions to be answered when you call in a preferred contractor for help. Some issues to watch out for include cracks in the combustion chamber, flaky igniters, and utility line blockages.
A furnace will have filters to further sift out the airflow and clear the heating load through the ductwork. Cakebread says that filters often have an operational life of around three months; this should establish a rule of thumb to replace the filters whenever a new quarter kicks in.