Underfloor heating is one of those luxuries that once you have, you’ll never want to go back. No more chilly toes on winter mornings, just a lovely, even warmth across the entire room. But while it sounds fantastic, many homeowners hesitate because of one big question: how much does underfloor heating actually cost to run?
Types of Underfloor Heating
There are two primary types of underfloor heating systems:
- Electric (Dry) Systems: These use electric cables or mats installed beneath the floor surface.
- Water-Based (Wet) Systems: These involve a network of pipes circulating warm water beneath the floor.
Factors Influencing Running Costs
Several factors can affect the running costs of underfloor heating:
- System Type: Electric systems generally have higher running costs compared to water-based systems.
- Energy Prices: The cost of electricity and gas can significantly impact expenses.
- Insulation Quality: Proper insulation ensures minimal heat loss, enhancing efficiency.
- Usage Patterns: How often and how long you run the system affects overall costs.
- Floor Area: Larger areas require more energy to heat.

Cost of Running Electric Underfloor Heating vs. Water-Based Underfloor Heating
Electric Underfloor Heating
Electric underfloor heating typically has higher running costs than water-based systems, mainly due to electricity prices. The exact expense depends on factors like room size, insulation, and how often the system is used. While it can be an efficient option for smaller spaces, heating larger areas for extended periods may lead to higher energy bills.
Water-Based Underfloor Heating
Water-based underfloor heating is often more cost-effective to run, especially when paired with an efficient boiler or heat pump. Since it operates at lower temperatures than traditional radiators, it uses energy more efficiently. Though installation costs can be higher, many homeowners find it to be a long-term, economical heating solution.
Energy Efficiency and Savings
Underfloor heating provides a highly efficient way to warm a home by distributing heat evenly across the entire floor surface. Unlike traditional radiators that create warm and cool zones due to convection currents, underfloor heating radiates warmth upwards, maintaining a stable and consistent room temperature.
One of the key efficiency benefits of underfloor heating is its ability to operate at lower temperatures while still delivering the same level of comfort. Water-based systems typically run at 35-45°C, and electric systems at 25-35°C, compared to radiators that need to reach 60-75°C. This lower operating temperature means less energy is required to maintain warmth, which can result in reduced energy bills.
Efficiency is further improved when underfloor heating is installed with proper insulation, preventing heat from escaping downwards and ensuring it is directed into the room. Smart thermostats can also optimise performance by maintaining ideal temperatures and reducing unnecessary heating, leading to long-term cost savings. Over time, these factors contribute to a more economical and energy-efficient home heating solution.
Tips to Minimise Running Costs
- Invest in Quality Insulation: Proper insulation reduces heat loss, ensuring the system works efficiently.
- Use Programmable Thermostats: These allow you to set heating schedules, avoiding unnecessary energy consumption. See our smart heating controls page.
- Regular Maintenance: Keep your system in top condition to maintain efficiency. See our boiler service page.
- Consider Renewable Energy Sources: Pairing underfloor heating with renewable energy can further reduce costs.
Ready to explore underfloor heating for your home?
Underfloor heating offers a comfortable and efficient way to warm your home. While running costs vary based on system type, energy prices, and usage, many homeowners find the benefits outweigh the expenses. By understanding the factors influencing costs and implementing energy-saving measures, you can enjoy a cosy home without breaking the bank.
Visit our underfloor heating page for more details, or contact UK Boiler Fit today to discuss the best options tailored to your needs.