Why is wattage important for underfloor heating? Wattage measures the power needed to heat a space, and it's typically calculated as watts per square meter.
Our range of electric underfloor heating systems, including Megawarm®, ProWarm™, and Gorilla®, come in three wattage options: 100 watts, 150 watts, and 200 watts.
Uses for 100-Watt Electric Underfloor Heating
Primary Heating: For new builds and well-insulated homes, 100-watt heating mats are an efficient choice. Current building regulations recommend between 50-70 watts per square meter. Thus, our 100-watt mats are perfect for any room in a newly built home. For older homes, where heating demands might be higher (70-150 watts per square meter), you might consider upgrading to 150-watt or 200-watt mats.
Secondary Heating: 100-watt mats are also excellent as secondary heating solutions, especially under tiles or LVT flooring. These surfaces heat up quickly and retain warmth, making them ideal for 100-watt systems.
Tips for Efficient Use:
Adjust Temperature Settings: Set your heating to around 16°C during off periods. This helps the floor heat up faster when you need it, saving you money over time.
Use Insulation Boards: Invest in insulation boards like Megawarm® or ProWarm™ to direct heat upwards and minimize loss into the subfloor. This speeds up heating and reduces energy consumption. Available options include:
Megawarm® and ProWarm™ Backer-Pro Tile Backer: Suitable for tile floors with a thickness of 6mm.
ProWarm™ XP-Pro Board: For tile and wood floors, also 6mm thick .
Megawarm® EPS and ProWarm™ Profoam: Ideal for wood, vinyl, or carpeted surfaces, with a 6mm thickness.
Cost of Electric Underfloor Heating
Understanding electricity usage helps you compare costs with traditional heating methods. A 100-watt underfloor heating mat uses about 75 watts per square meter. For instance, a 12m² room would use approximately 900 watts per hour.
Calculation
The formula to calculate the running cost is:
Cost =Power (kW) × Usage (hours) × Electricity Cost (£/kWh)
Estimated Running Costs:
2.5m² Bathroom: Around £20.00 per month.
1m² WC: About £8.16 per month.
These estimates are based on a 2024 electricity cost of 33p per kWh, assuming 8 hours of use daily (Costs may vary, so check current rates with your provider).
For most standard rooms, a 100-watt mat provides a cost-effective and efficient heating solution.
It’s straightforward to install, especially in new builds, and is generally more economical than radiators and traditional boiler systems.
Looking for more heat? Explore our 150 watt, 200 watt, or water underfloor heating systems for larger or more demanding spaces.
For more details on electric underfloor heating, visit our website.
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