What is the downside of radiant heat?

The primary downside of radiant heat is that it can be expensive to install. Radiant heat systems require specialized equipment and materials, such as tubing and pumps, and can be difficult to retrofit into existing homes. Additionally, radiant heat systems are not as efficient as other heating systems, such as forced air systems, and can be more expensive to operate. Radiant heat systems also require regular maintenance to ensure they are functioning properly.