Electric vs. Hydronic Underfloor Heating: Which One Should You Choose?

Underfloor heating is becoming a popular heating solution for homeowners looking to enhance their comfort and energy efficiency. There are two main types of underfloor heating systems: electric and hydronic (water-based). While both offer the luxury of evenly distributed heat, each system operates differently and comes with its own set of advantages and considerations. So, which one should you choose for your home? In this blog, we’ll break down the differences between electric and hydronic underfloor heating to help you make the best decision.

1. How Electric and Hydronic Underfloor Heating Work

Electric underfloor heating consists of electric cables or heating mats installed beneath the floor. These cables are connected to the home’s electrical system and controlled by a thermostat. When switched on, the cables heat up, providing radiant warmth that rises through the floor to heat the room.

Hydronic underfloor heating uses a network of pipes installed beneath the floor, through which warm water flows. The system is typically connected to a boiler, heat pump, or solar thermal unit that heats the water. Like electric systems, hydronic systems provide radiant heat that evenly warms the room from the floor up.

2. Installation Costs: Upfront Investment vs. Long-Term Savings

When comparing electric and hydronic systems, installation costs are a key consideration.

Electric Underfloor Heating: Electric systems are generally easier and quicker to install, making them ideal for retrofits or small-scale projects like heating individual rooms or bathrooms. Installation often involves laying thin electric mats or cables under the floor, which can be done relatively quickly. However, while the installation cost is lower, the running costs can add up over time, especially in large spaces due to electricity being more expensive than gas or other fuel sources.
Hydronic Underfloor Heating: Hydronic systems are more complex and require professional installation, involving the laying of pipes, connecting to a heat source, and possibly modifying the home’s plumbing system. This makes the initial installation more expensive and labor-intensive, especially if installed in an existing home. However, hydronic systems are more economical to run in the long term, particularly for heating large areas, since they can use a variety of energy sources, including gas, oil, or solar power.

3. Running Costs: Electricity vs. Water

Electric Underfloor Heating: Electric systems tend to have higher running costs due to the price of electricity, which is typically more expensive than water heating via gas or other fuels. For smaller areas or rooms that are only used occasionally, the higher running cost may not be a significant concern. However, for larger spaces or homes in colder climates where heating is needed consistently, the energy consumption can become expensive.
Hydronic Underfloor Heating: Hydronic systems are more energy-efficient, especially in larger homes or spaces that require consistent heating. Water retains heat better than air, and with the ability to use gas, oil, or renewable energy sources like heat pumps, hydronic systems often result in lower energy bills. This makes hydronic heating more cost-effective in the long run, particularly for homes with large heating requirements.

4. Efficiency and Performance: Which Heats Better?

Both electric and hydronic underfloor heating systems provide efficient, even heat distribution, but their performance differs based on your home’s layout and heating needs.

Electric Underfloor Heating: Electric systems are fast-acting, meaning they can heat up a room relatively quickly. This makes them ideal for spaces like bathrooms or smaller rooms where quick bursts of heat are needed. However, because they rely on electrical energy, they may not be as energy-efficient for heating larger areas or for homes that need long-term, consistent heating.
Hydronic Underfloor Heating: Hydronic systems are slower to heat up because they work by circulating warm water, but they excel at providing steady, long-lasting heat. Once the system reaches the desired temperature, it maintains warmth more efficiently. This makes hydronic systems better suited for whole-home heating, especially in colder climates where consistent heating is required throughout the day.

5. Maintenance: What to Expect Over Time

Electric Underfloor Heating: Electric systems are generally low maintenance. Since there are no moving parts or water involved, the risk of mechanical failure or leaks is minimal. Once installed, they require little attention beyond occasional checks to ensure the system is operating correctly. If repairs are needed, however, they can be tricky to access since they are embedded under the flooring.
Hydronic Underfloor Heating: Hydronic systems may require more maintenance over time due to the complexity of the water-based system. Pipes need to be inspected periodically to ensure there are no leaks or issues with the water flow. Additionally, boilers or heat pumps connected to the system may require regular servicing. While these systems are durable, they do involve more upkeep compared to electric systems.

6. Climate Considerations: Where Do These Systems Work Best?

Electric Underfloor Heating: Electric systems are often more suitable for homes in milder climates or for heating small spaces like bathrooms, kitchens, or individual rooms. Because they heat up quickly, they are ideal for intermittent use, making them perfect for areas where only short bursts of heat are required.
Hydronic Underfloor Heating: Hydronic systems shine in colder climates or homes that need constant heating. Since they take longer to warm up but provide consistent heat, they’re better suited for whole-home heating or large spaces. If you live in an area with long, cold winters, a hydronic system can help you achieve comfortable, efficient heating throughout the home.

7. Environmental Impact: Green Heating Options

Both electric and hydronic underfloor heating systems can be eco-friendly, depending on the energy source.

Electric Underfloor Heating: While electric systems typically use grid electricity, which may be sourced from fossil fuels, they can be powered by renewable energy if your home uses solar panels or other clean energy sources. This makes electric underfloor heating a viable option for eco-conscious homeowners who want to minimize their carbon footprint.
Hydronic Underfloor Heating: Hydronic systems are generally more eco-friendly because they can be powered by renewable energy sources, such as solar thermal or heat pumps. Additionally, the lower operating temperature of hydronic systems means they require less energy to run, making them a more sustainable option, especially for large homes or buildings.

Conclusion: Which One Should You Choose?

The choice between electric and hydronic underfloor heating depends on your specific needs, budget, and home layout. Here’s a quick recap to help you decide:

Choose electric underfloor heating if:

You’re looking to heat smaller spaces like bathrooms or individual rooms.
You prefer a quicker installation process with lower upfront costs.
You need occasional, short bursts of heat rather than continuous heating.

Choose hydronic underfloor heating if:

You want to heat large spaces or your entire home, especially in colder climates.
You’re willing to invest more upfront for long-term energy savings.
You’re looking for an eco-friendly solution that can be paired with renewable energy sources.

No matter which option you choose, underfloor heating adds value to your home by providing efficient, comfortable warmth that enhances your living experience. For professional installation and expert advice on the best system for your home, contact Arsen Electric today—we’re here to help you create a warm, cozy space with the perfect underfloor heating solution.