Replacing radiators with forced-air heating typically costs $15,000-$30,000 for a full-home conversion, though simple projects may start near $10,000 and complex retrofits can exceed $40,000. The main cost drivers are duct access, home size, furnace type, radiator removal, and regional labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Full heating conversion | $10,000 | $22,000 | $40,000+ | Typical existing home, including new furnace and ductwork |
| New ductwork | $5,000 | $10,000 | $18,000 | More if walls or ceilings need extensive opening |
| Forced-air furnace | $3,500 | $6,500 | $12,000 | Installed; efficiency and capacity affect price |
| Radiator removal | $500 | $1,500 | $4,000 | Varies by quantity, disposal, and pipe work |
Keeping the project to heating only avoids the added cost of an air conditioner, coil, and related electrical work. Choose a properly sized standard-efficiency furnace if premium features do not justify their price, and ask whether ducts can use closets, basement joists, or other existing routes instead of opening finished ceilings.
Get at least three written quotes with the same equipment capacity, duct length, radiator count, disposal terms, and repair allowance. Schedule during a contractor’s less-busy period when practical, and handle simple room clearing before the crew arrives. Do not cut costs by omitting return-air ducts, airflow balancing, or required permits; those omissions can create comfort and safety problems.