The answer to 'difference between furnace repair and' is that furnace repair refers to fixing specific issues with a home's furnace, while furnace replacement involves completely replacing the entire furnace unit. Furnace repair is typically less expensive and aims to fix a particular problem, while furnace replacement is a more major investment that involves installing a brand new furnace system.
Furnace repair may be needed for issues like a malfunctioning thermostat, clogged air filters, or a faulty ignition system. These can often be fixed by an HVAC technician without needing to replace the entire furnace. In contrast, furnace replacement is recommended when the furnace is old, inefficient, or has widespread issues that make repair unviable. A new furnace installation can improve energy efficiency and provide more reliable heating for the home.