It depends on age, repair costs, and current efficiency. If your gas furnace is less than 10 years old, most repairs are worth completing. Modern furnaces last 15-20 years with proper routine maintenance, so repairs extend that life at a fraction of hvac installation costs.
If your furnace is 15+ years old and needs major repairs - heat exchanger, control board, or blower motor - replacement often makes more sense. Older systems run less efficiently, leading to higher heating costs and more unexpected breakdowns.
Consider the $5,000 rule: multiply repair cost by your furnace's age. If that exceeds $5,000, replacement typically offers better long-term value and peak efficiency. Our trained technicians will assess your system and give you honest guidance - whether that's an expert repair or energy efficient replacement options that fit your budget.