Cold feet in the morning? Shivering toes on the bathroom tiles? There exists a solution which eliminates the need to sleep with socks and perform an uncomfortable hop-skip to reach a rug. Underfloor heating serves as a luxurious yet functional heating solution which turns London home floors from cold spaces into warm comfort zones.
People want to know the total cost of underfloor heating before they start removing their carpeting. Before beginning an underfloor heating project, it’s important to understand the average cost involved so you can plan and budget effectively.
The cost of underfloor heating systems depends on multiple factors which include property dimensions and system selection and whether the installation takes place during new construction or existing home renovation. For example, the average cost of an underfloor heating project in London or the UK can vary widely depending on these factors, so obtaining quotes and comparing options is essential. The total cost includes physical and installation costs and regular operating expenses.
At Mayfair Plumbers, we’ve installed and repaired countless underfloor heating systems across North and Inner London. We know the ins and outs of both electric and wet systems, and we’re here to break down exactly what you can expect to pay. The guide provides information about underfloor heating costs to assist you in determining if this comfortable feature fits your budget.
Underfloor heating is an increasingly popular and energy-efficient way to keep your home warm and comfortable all year round. Unlike traditional radiators, underfloor heating systems work by installing heating elements—either electric mats or cables, or a network of pipes carrying warm water—beneath your flooring. This setup allows heat to rise evenly throughout the room, eliminating cold spots and providing consistent warmth underfoot.
There are two main types of underfloor heating: electric underfloor heating and wet underfloor heating systems. Electric underfloor heating uses electric mats or cables to generate heat quickly and is ideal for smaller spaces or renovations. Wet underfloor heating, also known as water underfloor heating, circulates warm water through pipes and is especially suited for larger areas or new builds. Both types of underfloor heating systems are designed to be energy efficient, helping to reduce your energy bills by distributing heat more evenly and allowing you to run your heating at lower temperatures.
In this guide, we’ll break down the costs of underfloor heating, including installation costs, running costs, and maintenance, so you can decide which type of underfloor heating is right for your home and budget.
Before we dive into the numbers, let’s cover the basics. There are two main types of underfloor heating systems, and each comes with its own price tag and installation quirks. These are electric systems and water systems, often referred to collectively as electric and water systems. An electric system is generally easier and cheaper to install, especially during renovations, while a water system is more complex, typically more expensive, and better suited for new builds.
The heating system in electric underfloor systems includes heating cables or heat mats which you place under your floor. These devices operate through electrical power and work best for bathroom spaces, kitchen areas, and en-suite rooms. Heat mats are a popular option for small rooms or renovations due to their affordability and ease of installation.
How it works: The system operates through electric mats or cables which create a floor grid that connects to home electricity and operates through a thermostat.
Best for: Renovations, smaller spaces, and rooms where you want quick, responsive heat. Electric underfloor systems with heat mats are especially suitable for these scenarios.
Installation: To install electric underfloor heating is a straightforward process, especially when using heat mats, which are easy to lay out and require minimal disruption. This solution works best for properties that already have existing heating systems because it avoids complete system replacements.
Wet systems distribute heated water through floor-installed pipes which form a network beneath your floor surface. These pipes connect to your central heating system, typically your boiler.
How it works: Wet underfloor systems are plumbing-based solutions that circulate hot water through loops of pipe laid across the floor, radiating heat upwards evenly throughout the room. This type of system is also known as warm water underfloor heating.
Best for: New builds, large areas, and whole-home installations where efficiency is a priority. Engineered wood is a suitable flooring material for wet underfloor systems due to its favorable thermal properties, which help optimise heat transfer.
Installation: The process requires more complex procedures which need to modify floor elevation and connect to your current heating system. However, once installed, wet systems are highly efficient and cost-effective to operate.
Two main underfloor heating types exist, but we need to determine which factors affect their total expenses. The underfloor heating installation cost can vary significantly depending on the system installed—whether you choose an electric or water-based system—and whether the property is a new build or a renovation. The selection process needs more than basic electric or wet option selection.
Building larger spaces requires more materials and workers, leading to higher construction costs. Underfloor heating costs are often calculated per square metre, and average costs can vary depending on the size and shape of the room. As the room size increases, the total cost rises with each additional square metre. The installation process becomes more complex when rooms have non-standard shapes and when spaces contain multiple corners and multiple fixtures, including bathrooms with toilets, sinks, and bathtubs.
The heat-conducting properties of flooring materials determine both installation requirements and system efficiency. The choice of flooring material directly impacts heat transfer, and improper insulation can lead to significant heat loss, reducing the effectiveness of your underfloor heating system.
Tiles and stone: These are the gold standard for underfloor heating. The materials conduct heat well and maintain heat for extended periods, allowing for efficient heat transfer.
Wood: Works well, but you’ll need to ensure it’s suitable for underfloor heating to avoid warping. Using appropriate insulation boards beneath the system can help minimise heat loss and improve overall efficiency.
Carpet: Not ideal, as it acts as an insulator and reduces efficiency. Choose a thin carpet with low tog rating when you decide to use carpeting, and consider installing insulation boards to reduce heat loss and promote more even warmth.
The installation costs of electric systems remain lower than gas systems but their operating expenses become higher when serving big areas. When comparing electric underfloor heating cost to the cost of water underfloor heating systems, electric systems are generally cheaper and easier to install, especially in renovations or older properties, while water systems (also known as wet systems) require more complex installation and higher upfront costs due to pipework and connection to a boiler or heat pump. However, the initial costs of wet system installation lead to financial benefits because they decrease operational expenses throughout their operational lifespan.
Electric heating systems work best for warming small bathroom spaces. For a whole-house installation, wet underfloor heating is typically more economical over time.
Installing underfloor heating in a new build is generally more straightforward and cheaper. The project begins with an unoccupied area because you can start without needing to take out existing flooring or navigate through installed building elements.
Retrofitting underfloor heating into an existing property is more involved. The process demands that you increase floor heights and adjust their dimensions while dealing with unexpected problems which could include uneven subfloor surfaces and inadequate insulation. Installing water underfloor heating in existing properties is typically more complex and expensive than electric systems, often resulting in higher labor and material costs. This can lead to additional underfloor heating costs that should be considered when budgeting for a renovation. Failing to address issues properly during installation may also cause costly repairs later.
One of the biggest benefits of underfloor heating is its energy efficiency. Because heat rises evenly from the floor, you can often run underfloor heating at a lower temperature than traditional radiators whilst still maintaining the same level of comfort. This not only allows you to run underfloor heating more efficiently, but also leads to reduced energy consumption and significant energy savings, which in turn lowers overall energy costs and heating bills.
According to industry estimates, underfloor heating can reduce heating costs by up to 15% compared to radiator systems, particularly when paired with a modern, efficient boiler.
Let’s get down to brass tacks. Here’s what you can expect to pay for underfloor heating, broken down by materials, installation, and running costs. Understanding the average cost and average costs of underfloor heating systems, as well as being aware of underfloor heating running costs, is essential for budgeting and comparing different heating options.
Electric systems:
Wet systems:
When considering underfloor heating installation cost, it is typically calculated per square metre, allowing you to estimate the installation cost based on the size of your property and the type of system installed.
Labour costs vary depending on the complexity of the job, but here’s a rough guide:
Electric systems:
Wet systems:
For an average-sized property (around 90m²), the total installation cost will depend on the system installed:
Running costs depend on how long you use the system, the size of the room, and current energy prices. For electric underfloor heating, electricity prices have a direct impact on the running cost and overall underfloor heating running costs, so higher regional rates can make electric systems more expensive to operate over time. Here’s a snapshot based on running your system for four hours a day:
Electric:
Wet:
When considering underfloor heating running costs, usage patterns matter. It can be more cost-effective to leave underfloor heating on continuously at a lower temperature, especially during colder months, rather than turning it on and off, as this helps maintain a steady temperature and can improve energy efficiency.
Over the course of a year, wet systems typically work out significantly cheaper to run, particularly in larger spaces.
Beyond the basics, there are a few extra expenses you might encounter. It’s important to budget for additional underfloor heating costs beyond the initial installation, as supplementary expenses can arise during or after the process.
Maintenance: Regular servicing by an underfloor heating specialist is recommended to keep your system running efficiently and to help prevent costly repairs. This proactive approach can save you money in the long run and ensure your underfloor heating system remains cost-effective.
A programmable or smart thermostat gives you greater control over your heating and can help reduce running costs. Expect to pay £50 – £200 for the thermostat itself, plus installation fees if it’s not included in your quote.
If your subfloor isn’t level or properly insulated, you’ll need to address this before installation. In most cases, you may need to remove or modify the existing floor to allow for proper installation of the underfloor heating system. It is also important to install insulation boards beneath the heating elements, as these boards help improve system efficiency, reduce heat loss, and provide more even warmth across the flooring. Costs for levelling, insulation, and subfloor work vary, but budget at least a few hundred pounds for smaller rooms.
Many companies charge callout fees just to come and assess your property. At Mayfair Plumbers, we don’t charge callout fees. We offer free, no-obligation consultations and estimates, so you can get expert advice without any hidden costs.
Underfloor heating systems are generally low-maintenance, but it’s wise to have them inspected every few years to ensure everything is running smoothly. Regular inspections by an underfloor heating specialist can help identify potential issues early and prevent costly repairs. Repair costs vary depending on the issue, but catching small problems early can save you from costly fixes down the line.
Feeling handy? You might be tempted to tackle underfloor heating installation yourself. Whilst it’s technically possible to install electric underfloor heating as a DIY project, it’s crucial to have any underfloor heating work—especially electrical—carried out by a professional. This ensures all safety standards are met and reduces the risk of electrical hazards.
Why? Incorrect installation can lead to inefficient heating, electrical faults, or even damage to your flooring. For wet systems, professional installation is non-negotiable. These systems require integration with your central heating and must be installed by a Gas Safe registered engineer to comply with safety regulations.
Professional installation ensures your system is safe, efficient, and covered by warranty. At Mayfair Plumbers, our experienced team handles everything from initial consultation to final testing, giving you peace of mind and a perfectly heated floor.
Still on the fence? Here’s why underfloor heating is worth the investment:
Heated floors are considered one of the best underfloor heating system options for modern homes, thanks to their superior heat distribution and ability to efficiently warm living spaces.
Of course, no heating system is perfect. Here are a few potential downsides to consider:
At Mayfair Plumbers, we specialise in the installation and repair of both electric and wet underfloor heating systems for homes and commercial properties across North and Inner London. With nearly two decades of experience and a team of Gas Safe registered engineers, we’re equipped to handle projects of any size and complexity. We can manage your entire underfloor heating project, from initial planning to having the system installed by a qualified underfloor heating specialist, ensuring the right system is chosen for your needs.
Our customer-first approach provides complete price transparency and eliminates all additional costs while ensuring we deliver top-quality results. Our company provides free consultation services and free project estimates which let you assess your choices before making any financial commitment. Plus, all our work is guaranteed for 12 months, giving you confidence in your investment.
Our team provides assistance for all your heating needs whether you want to construct a new building or update your current property or explore better heating solutions.
How much does underfloor heating cost to install?
For an average-sized property (around 90m²), expect to pay £4,500 – £5,400 for electric systems and £7,650 – £8,550 for wet systems, depending on whether it’s a new build or retrofit. The electric underfloor heating cost per square meter typically ranges from £50 to £60, while the underfloor heating installation cost can vary based on the system installed—electric systems are generally less expensive and quicker to fit than water-based systems, especially in retrofit projects.
Is underfloor heating cheaper to run than radiators?
Yes, underfloor heating is generally more energy-efficient, particularly wet systems. Over time, you can save up to 15% on heating costs compared to traditional radiators. Underfloor heating running costs are often lower than those of conventional systems, especially when paired with efficient heat pumps, helping to reduce overall energy costs and heating bills. Understanding the running cost of your chosen system is important for managing ongoing expenses and maximising long-term savings.
Can I install underfloor heating myself?
It’s possible for electric systems if you’re a qualified electrician, but we strongly recommend professional installation to ensure safety and efficiency. If you plan to install electric underfloor heating, hiring an underfloor heating specialist is crucial to avoid costly repairs and ensure the system functions properly. Wet systems must be installed by a Gas Safe registered engineer.
What type of flooring works best with underfloor heating?
Tiles and stone are ideal due to their excellent heat conductivity. Engineered wood is also a good option, as its structure allows for efficient heat transfer when used with underfloor heating. Wood works well, but avoid thick carpets as they reduce efficiency. Proper installation and insulation are important to minimise heat loss and ensure optimal performance.
How long does underfloor heating take to warm up?
Underfloor heating typically takes longer to warm up than radiators, but it retains heat more effectively, providing consistent warmth throughout the day. The heat output and heat distribution of underfloor heating systems work together to ensure even heat distribution, which minimises hot and cold spots and enhances overall comfort.
Does underfloor heating increase property value?
Yes, underfloor heating is a desirable feature that can enhance your home’s appeal and resale value.
Underfloor heating offers unbeatable comfort, energy efficiency, and a sleek, space-saving alternative to traditional radiators. Whilst the initial investment can be significant, the long-term savings and increased property value make it a smart choice for many homeowners.
At Mayfair Plumbers, we’re here to guide you through every step of the process, from choosing the right system to expert installation and aftercare. Our team is available 24/7, 365 days a year, ready to provide free consultations and personalised quotes tailored to your needs.
Don’t let cold feet hold you back. Contact Mayfair Plumbers today to schedule your free consultation. Let’s turn your home into a warm, welcoming haven.
In conclusion, underfloor heating offers a modern, efficient, and comfortable solution for home heating. The cost of underfloor heating will vary depending on the type of underfloor heating system you choose, the size of your property, and the complexity of the installation. Electric underfloor heating systems are generally more affordable to install but can have higher running costs, while wet underfloor heating systems require a larger upfront investment but are typically cheaper to run in the long term.
When considering underfloor heating, it’s important to factor in installation costs, ongoing running costs, and the energy efficiency of your chosen system. Installing electric underfloor heating or wet underfloor heating should always be carried out by a qualified heating engineer to ensure safety and optimal performance. By understanding the cost of underfloor heating and the benefits each system offers, you can make an informed decision that suits your needs and helps lower your energy bills.
Whether you’re looking to retrofit underfloor heating into an existing space or planning a new build, choosing the right underfloor heating system can transform your home with consistent warmth and improved energy efficiency.
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