Maryland winters can be unpredictable, but one thing is certain: a dependable heating system is essential. Preparing before the first freeze ensures comfort and safety throughout the season. Homeowners should schedule a professional furnace tune-up in the fall to check burners, heat exchangers, and safety controls. Filters should be replaced, and ducts inspected for leaks that waste heat. Thermostats must be calibrated to maintain steady indoor temperatures without overworking the system. For Maryland homes with older furnaces, maintenance can... read full review »