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HVAC

Cast Iron Radiators

Average Cost:

$500 - $3,000

Cast-iron radiators deliver steady, quiet heat with classic style that suits older homes and modern remodels alike. Most homeowners spend $500 to $3,000 per radiator installed. Units typically run $200 to $1,500 depending on size, style, and finish, with refurbished options around $200 to $1,000. In this guide, you’ll learn how to size your radiator, compare new vs. refurbished, and plan your budget so you can hire a pro with confidence.

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What Are Cast-Iron Radiators?

Cast-iron radiators are among the oldest heating fixtures still in use. These finned units work with either steam from a boiler or hot water from a hydronic system. As steam or hot water moves through the radiator, the metal releases heat into the surrounding air for steady, room-wide comfort.

Cast-Iron Radiator Costs

HVAC pricing varies by size, style, brand, and whether the unit is new or refurbished.

Imported from Manual Input
ItemTypical CostNotes
Installation (per project)$500 to $3,000Includes basic setup; complex retrofits cost more.
Small Radiator$200 to $500 (Two to Four Columns)Entry-level sizes for smaller rooms.
Medium-Sized Radiator$400 to $800 (Four to Six Columns)Popular balance of output and footprint.
Large Radiator$800 to $1,500 (Six to Ten Columns)Higher output for larger spaces.
Refurbished Radiator$200 to $1,000Price varies by size, style, and condition.
Labor$6.08 to $11.17 per hourRates vary by market and scope.
Accessories & MaterialsVariesValves, brackets, feet, air vents, and trim.
Custom Finishes/DesignVariesDecorative finishes and special sizes add cost.

Custom sizes and decorative finishes are available for a period-correct look. Ask your contractor if they offer design options that fit your home.

What Affects Cast-Iron Radiator Costs

A few factors have the biggest impact on your total investment.

  • Unit Size and Heat Output: Larger, higher-output radiators cost more.
  • New vs. Refurbished: Refurbished units can save money but may need extra prep.
  • Style and Finish: Ornate designs and specialty finishes raise the price.
  • Custom Dimensions: Non-standard sizes or made-to-order pieces add lead time and cost.
  • Installation Complexity: Re-piping, moving locations, or reinforcing floors increases labor.
  • Local Labor Rates: Market rates, union labor, and seasonal demand affect pricing.
  • System Type and Condition: Steam vs. hot water requirements, plus valve and control upgrades.
  • Accessories and Controls: Thermostatic valves, brackets, feet, and trim pieces add up.
  • Refurbishing Work (If Applicable): Sandblasting, pressure testing, and repainting.
  • Delivery and Handling: Heavy units can require special shipping and on-site equipment.
  • Disposal of Old Equipment: Haul-away fees for existing radiators or piping.

cast iron radiators

Why Homeowners Choose Cast Iron

Cast iron has a few standout advantages. If you like classic style and even, lasting warmth, these may be a good fit.

  • Long-Lasting, Even Heat: Cast iron warms up and cools down slowly, which helps reduce hot and cold swings. Once heated, the radiator continues producing gentle warmth — a cozy, consistent feel throughout the room.
  • Highly Durable: These radiators are solid and tough. They resist dents better than many lighter options. Surface rust can usually be sanded and refinished, extending the radiator’s life and appearance.
  • Reliable: With few moving parts, cast-iron radiators are known for long service life. As long as valves and system components are maintained, the radiator itself can outlast many modern heating appliances.
  • Quieter Operation: Steam systems can hiss or knock, but cast iron expands and contracts less than lighter metals, which helps cut down on common system noises.
  • An Elegant, Timeless Look: Many cast-iron radiators feature ornate details and classic brass valves. In older homes, they preserve historic character — a big plus if you value charm and authenticity.

Considerations Before You Buy a Cast Iron Radiator

A few practical points can help you decide if cast iron is the right radiator heating type for your space.

  • Size and Weight: Cast-iron radiators are heavy and typically floor-mounted rather than wall-hung. They take up floor space, so they may not suit smaller rooms. If space is tight, consider slim flat-panel radiators or lighter steel or aluminum options.
  • Safety and Anchoring: Every radiator should be installed securely. Your contractor should anchor the unit into wall studs or use sturdy floor mounts so it sits level, resists tipping, and operates safely.
  • Sizing and Installation Tips: Getting the size right is essential for comfort and efficiency. A licensed plumber or heating specialist can calculate the correct output for your room’s square footage, insulation, window count, and climate. If you are replacing a unit, the existing radiator size is a helpful starting point, but a professional load calculation will confirm the best fit.

Looking for Another Type of Radiator?

We’ve got you covered. Check out our info guides:

Bottom Line on Cast Iron Radiators

A properly sized, well-installed cast-iron radiator can be a comfortable way to heat a room. While not the most compact or modern option, it offers durable construction, reliable performance, quiet operation, and enduring style — warmth you can feel and a look you can love for decades.

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