Underfloor...

Underfloor heating is an alternative to radiators which runs under your flooring.

Frequently asked Questions:

How does underfloor heating work?
Electric: heating cables/wires under the floor.
Water-based: warm water circulates through pipes in the floor.

How underfloor heating manifold works?
It distributes water evenly to different zones, controls flow and temperature.

How does underfloor heating work with boiler?
Boiler heats water. A mixing valve reduces temperature. Pump circulates water through floor pipes.

What temperature underfloor heating?
Floor surface: 25–29°C typically.
Water temp: 35–55°C depending on floor type.

Will underfloor heating heat a room?
Yes — if properly sized, it can heat rooms efficiently.

Is it a good idea to have underfloor heating?
Yes — provides comfort, frees wall space, energy-efficient when designed well.

Does heavy furniture damage underfloor heating?
No — but can block heat. Avoid insulating pads and ensure airflow under large items.

Performance & Running Costs

Why is my floor cold with underfloor heating?
Possible causes: incorrect thermostat settings, airlocks, blocked pipes, system faults, or heat blocked by furniture/floor coverings.

Is it expensive to run underfloor heating?
Water-based: generally cost-effective, especially with modern boilers or heat pumps.
Electric: more expensive to run long-term.

Is it cheaper to leave underfloor heating on constantly?
In well-insulated homes: yes, at low consistent settings.
In poorly insulated homes: no — use scheduling.

What are the disadvantages of underfloor heating?

• Higher installation cost

• Slow heat-up times

• Inflexibility under large furniture

• Difficult to retrofit in some properties

Is it cheaper to run radiators or underfloor heating?
Water-based UFH can be cheaper and more efficient at lower temperatures. Electric UFH is generally more expensive than radiators.

Troubleshooting

Why is my underfloor heating not getting warm enough?
Check thermostat settings, airlocks, flow rate, boiler temp, or blockages.

How do I reset my underfloor heating thermostat?
Consult manual — usually involves pressing a reset button or power cycling.

Why is my underfloor heating not circulating?
Possible pump failure, airlocks, closed valves, or controller issues.

How can I improve my underfloor heating?

• Balance flow rates

• Ensure adequate insulation

• Remove airlocks

• Use appropriate floor coverings

What is the lifespan of underfloor heating?
Water pipes: 50+ years.
Electric cables: 20–30 years.

Why would underfloor heating stop working?
Common reasons: thermostat failure, airlocks, pump issues, electrical faults (in electric UFH).

Why does my underfloor heating keep cutting out?
Could be overheating, thermostat faults, pump failure, or electrical issues.

Why does my heated floor keep tripping the breaker?
Likely an electrical fault — damaged cable, poor connections, or water ingress (for electric UFH).

How to remove airlock from underfloor heating?
Use manifold vent valves or purge the system with a filling loop and pump to force air out.

Can underfloor heating smell?
Yes — new installations may emit temporary odours (from adhesives or curing materials). Persistent smells may indicate issues.

Can underfloor heating crack tiles?
Yes — if poorly installed or if the tiles/grout aren’t suitable for underfloor heating.

Can underfloor heating go under carpet?
Yes — low-tog carpets and underlay are suitable. Thick materials can restrict heat output.

Can underfloor heating be connected to radiator?
Yes — both can be run from the same boiler, using separate circuits and controls.

Our expert engineers can rectify all your underfloor heating issues. Book now.