How Much Does Radiant Heating Repair Cost? [2025 Data]

This article was created using automation technology and thoroughly fact-checked and edited by an Angi Editor in accordance with our AI policy.

Radiant heating repair cost ranges from $90 to $1,500 on average, with most homeowners paying an average of $1,300 for repairs. Minor fixes may cost as little as $90, while major repairs can reach $7,000 or more. Costs vary based on system type, repair needed, and local labor rates.

Repairing radiant heating matters because it keeps your home comfortable and energy bills in check. Expect to pay $75 to $150 per hour for labor, and between $2 and $6 per square foot for repairs on larger systems.

Radiant Heating Repair Cost Factors

Several factors influence your radiant heating repair cost. Understanding these details helps you budget wisely and anticipate what your project may require.

Type of Repair

Radiant heating systems can require a range of repairs, from fixing leaks and replacing thermostats to addressing pump failures or electrical issues. The urgency and impact of each repair depend on how much it affects your system’s performance. Some repairs, like air lock removal, are quick fixes, while others, such as replacing a manifold or pump, may be more involved and costly. Parts like thermostats and pumps tend to need attention more often due to wear and tear.

Leak Repair

Leaks can quickly undermine the performance and safety of your radiant heating system. They often occur due to pipe corrosion, failed joints, or high water pressure. Common signs include unexpected drops in pressure, visible water, or damp spots. Leak repair costs generally range from $350 to $1,200, depending on how easily the leak can be accessed and fixed.

Thermostat Replacement

Thermostats are the “brains” of your radiant heating system, controlling temperature and cycling. Over time, these can fail due to electrical issues or age, leading to uneven heating or system shutdowns. Replacing a faulty thermostat costs between $120 and $350.

Manifold Repair or Replacement

The manifold distributes heated water or electricity to various zones in your home. Issues often show up as uneven heating or cold spots. Because the manifold is central to system performance, repairs or replacements are more complex and cost between $500 and $1,600.

Pump Repair or Replacement

In hydronic (water-based) radiant heating systems, the pump circulates hot water. Pump failures can cause noise, poor heating, or total system stoppage. Repair or replacement costs $400 to $1,200, depending on pump type and access.

Control Board or Sensor Repair

Control boards and sensors manage the system’s electronic functions. Failures can cause system errors or complete shutdowns. These repairs are less frequent than mechanical issues but cost between $250 and $800.

Air Lock Removal

Air locks can form when air gets trapped in the system, reducing efficiency and causing cold spots. Professional air lock removal is a quick, necessary fix and costs $120 to $300.

Wiring or Electrical Repairs

Electrical problems are more common in electric radiant systems. Issues range from faulty wiring to blown fuses. These repairs are urgent for safety reasons and cost $150 to $650.

Type of Radiant Heating System

Radiant heating systems come in two main types: hydronic (water-based) and electric. Hydronic systems are more common in larger homes and are often more complex and expensive to repair than electric systems.

Hydronic systems often require specialized parts and more labor, while electric systems are simpler but may involve tricky wiring work.

Brand

The brand or manufacturer of your radiant heating system can impact repair costs. Some brands use proprietary components or have limited part availability, which can raise prices. Well-known brands may offer more readily available replacement parts, but always check for compatibility to avoid future problems.

Size

The total size of your radiant heating system, measured in square footage or number of heating zones, directly affects repair costs. Larger systems mean more pipes, wiring, or panels to troubleshoot, which increases labor and materials.

Repairs in larger homes often cost more due to extended troubleshooting and replacement needs.

Materials

The material used in your radiant heating system—like PEX, copper, or aluminum—affects both the cost and longevity of repairs. PEX is affordable and easy to repair, while copper is more expensive and labor-intensive.

Choosing high-quality, compatible materials for repairs can help prevent future issues and keep costs lower over time.

Warranties

Many radiant heating systems come with manufacturer or installer warranties. These warranties may cover parts, labor, or both for a set number of years. Always check your warranty before scheduling repairs, as it can offset or even eliminate out-of-pocket costs for covered issues. Review the warranty terms carefully to know what’s included and the process for making a claim.

Maintenance Plans

Some radiant heating professionals offer maintenance plans that include annual inspections, system flushes, and minor repairs. These plans often cost $150 to $350 per year and can save money over time by catching problems early. Consider enrolling in a maintenance plan if you want consistent performance and fewer surprise repairs.

Labor

Radiant heating repairs are typically handled by HVAC technicians, plumbers, or electricians, depending on the system. Hourly rates range from $75 to $150, with service call fees adding $75 to $200 per visit. Technicians with advanced certifications or experience may charge more, but their expertise can mean faster, more reliable repairs. Regional differences also play a role, with higher rates in urban areas.

Location

Where you live affects radiant heating repair costs due to local labor rates and parts availability. Urban areas and regions with higher costs of living tend to have more expensive repairs. The system’s physical location in your home also matters—systems under concrete slabs or behind walls require extra labor and may involve demolition, raising the total cost.

Additional Repairs or Services

Radiant heating repair projects often require related services, such as system flushes, insulation upgrades, or installing a smart thermostat. Diagnostic service fees, emergency repairs, or after-hours service can add $100 to $400. Permits, inspections, or code compliance fees may also apply, especially for major repairs or upgrades.

Radiant Heating Repair vs. Replace

Deciding whether to repair or replace a radiant heating system depends on several key factors. If your system is newer, under warranty, or the issue is minor, repair is often the most cost-effective choice. However, if the system is over 15 years old, requires frequent repairs, or suffers from major failures, replacement may be the smarter long-term investment.

The average radiant heating repair cost ranges from $400 to $1,800, while full system replacement can cost $6,000 to $25,000 or more, depending on size and type. The “50% rule” is a helpful guideline: if the repair cost exceeds 50% of the replacement cost, replacement is recommended. Repairing an older or inefficient system may offer only short-term relief and lower energy savings, while a new system can provide better performance and reliability.

Carefully weigh the age, efficiency, and repair history of your system before making your decision.

Tips to Reduce Cost While Repairing Radiant Heating

Repairing radiant heat can be costly, but it doesn’t have to break the bank. Here are a few ways you can reduce costs while repairing your radiant heating system. 

• Schedule regular maintenance to prevent major repairs.

• Address small issues promptly before they escalate.

• Get multiple quotes from qualified professionals.

• Check warranty coverage before authorizing repairs.

• Consider a maintenance plan for long-term savings.

• Opt for standard replacement parts over proprietary or premium options.

• Improve system access to reduce labor time.

DIY Radiant Heating Repair Cost vs. Hiring a Pro

DIY radiant heating repairs can save you labor costs, but they require specialized skills, tools, and a solid understanding of your system. Common DIY repairs include thermostat replacement or bleeding air from hydronic lines, which cost just $50 to $200 for parts and tools. However, complex maintenance—such as fixing leaks, replacing pumps, or addressing electrical faults—should be handled by a licensed professional.

DIY attempts carry risks: improper repairs can void warranties, cause further damage, or create safety hazards. Electrical work, especially, should be left to pros for safety and code compliance. While hiring a pro costs more upfront, you gain peace of mind and long-term reliability. In general, call a heating and cooling professional in your area for anything involving electrical systems, major leaks, or repairs that require permits.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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