Warmup Underfloor Heating FAQs

The right choice depends on several factors:

• Room or zone size - electric systems are excellent for single rooms or smaller areas; water systems are more cost effective for larger zones or whole-house applications.
• Depth constraints - electric systems are typically thinner and easier to install without raising floor height much.
• Operating cost - water systems tend to be more efficient over large areas and long term (especially when paired with low-temperature boilers or heat pumps).
• Existing infrastructure - in a new build or renovation, plumbing infrastructure may support water-based systems better.
• Compatibility with floor covering - both types must match the thermal conductivity and temperature limits of the chosen floor finish.

Our Spacers team can help you compare pros and cons for your specific layout and needs.

Yes - Warmup designs its systems to be compatible with a range of floor coverings, including tile, stone, vinyl, laminate, carpet and engineered timber. 

However, when using timber or engineered wood, limitations apply: the maximum surface temperature (often around 27 °C) must be respected, and expansion gaps, appropriate underlays, and stable substrate conditions are essential.

Tiles and stone are especially well suited to underfloor heating because they conduct heat effectively. Warmup promotes radiant heating under tile surfaces as an efficient match. 

Good planning ensures efficient and trouble-free performance. Key layout considerations include:

Positioning heating elements away from fixed objects (e.g. sanitary fixtures, bathtubs)

Ensuring even heat distribution by spacing cables or mats correctly

Including movement joints or breaks in large floor areas

Avoiding overheating in corners or under obstructions

Ensuring thermostats and sensors are placed in accessible and representative locations

Accounting for insulation needs, particularly under slab or above screed

When using Warmup insulation boards or substrates, proper planning reduces heat loss and improves responsiveness.

While detailed installation should follow Warmup’s published installation guide, general best practices include:

Preparing the substrate: flat, level, rigid, clean and dry

Using appropriate insulation boards or membranes to reduce downward heat loss

Laying heating cable or mat according to spacing and layout plan

Connecting to the thermostat or control system with appropriate wiring

Testing the system before covering (ohm test, insulation resistance)

Embedding or covering the heating elements with screed (if needed) or directly laying the chosen floor finish

Commissioning carefully, with gradual ramp-up of temperature

Warmup offers technical literature and support for professional installers. 

Warmup offers a range of thermostats and smart controls including:

• WiFi and smart thermostats - e.g. 6iE, Element series for programming and remote control 
• Programmable / manual thermostats - for basic on/off or timed control
• Wiring centres and sensors - for system interfacing and monitoring

These thermostats may support features like scheduling, zoning, adaptive control and app integration, enhancing energy efficiency and comfort.

Warmup systems come with extensive warranties and long expected lifespans when installed correctly. Warmup markets itself as providing “Guaranteed for Life” support and warranties for many of its systems. 

While specific warranties depend on the product line (mat, cable, control, etc.), the intention is for the system to perform over decades under appropriate usage and care.

Warmup systems are largely maintenance-free, but care includes:

Periodic checks of thermostat operation and sensor accuracy

Observe floor temperature and ensure it does not overheat

Keep control wiring and junctions accessible

Monitor performance - slower heat-up or cold spots may indicate insulation or wiring issues

In cases of malfunction, test circuit resistance, wiring connections, thermostat sensors

Because the heating elements are often covered, diagnosing issues may require lifting floor zones or accessing wiring points.

Costs and running expenses vary based on:

System type (electric vs water)

Area size and complexity

Subfloor preparation and insulation

Floor covering type and thermal conductivity

Electricity or boiler efficiency

Control strategy and thermostat usage

Electric systems typically cost more per square metre to run but less upfront to install. Water systems have higher installation costs but lower running costs in larger areas over time. Warmup themselves promote energy efficiency through radiant heating. 

Our showrooms in:

Ruislip

High Wycombe

Maidenhead

serve customers across:

Uxbridge, Harrow, Pinner, Northwood

Slough, Windsor, Bracknell

Beaconsfield, Marlow, Bourne End

Rickmansworth and nearby Home Counties

You can visit us for product displays, input on layouts, sample control units and quotations.

Here is why many customers trust Warmup systems delivered via Spacers:

Warmup is a leading, proven underfloor heating brand with wide product support 

Spacers provide accessory, tile and wood flooring products that integrate with heating systems

You benefit from combined technical advice on flooring and heating compatibility

Our showroom presence lets you see controls, insulation boards or heating mats firsthand

We support installation, sourcing, spare parts and warranty alignment

Versus generic kits: Warmup brings strong brand support, warranties, and extensive accessories (controls, insulation, design tools)

Versus lower cost competitors: Warmup’s engineering depth and system integration often deliver better long-term reliability

Versus other premium brands: Warmup’s product breadth, control systems, and global presence make it a strong contender in the premium UFH field

Warmup’s strength is in offering multiple system types, control flexibility, compatibility and backed reliability.

Warmup offers two main system types:

• Electric (dry) systems - includes heating mats, loose cables, foil heaters. These are typically easier to retrofit because they are thin and do not require bulky screeds. 
• Water (hydronic) systems - uses warm water pumped through pipes within the floor. These are often more efficient for entire-house heating or large areas. 

Within these categories, Warmup offers a range of products such as DCMPRO cable, heating mats, insulation boards, thermostats, and control systems.