The underfloor heating pump is made by Grundfos.

The underfloor heating mixer is the ThermoMix mixing valve, one of the best mixing valves on the market.  The underfloor heating mixing valve can be mounted to the left on the underfloor heating manifold or to the right on the underfloor heating manifold.

The control pack that consists of the underfloor heating mixer and the underfloor heating pump can do up to 14 Kw underfloor heating output.

If the property is built to current building regulations, the underfloor heating pack could do up to 180 – 190 sqm floor area, ie 1000 m of multilayer pipe.

It is important that the pipework from the heating source to the underfloor heating mixing valve is flushed, as else there is a risk of dirt entering the underfloor heating water mixing valve and this could cause poor flow rates to the water underfloor heating manifolds.

The underfloor heating mixer can be adjusted from 35 degree C to 65 degree C.

The underfloor heating pump is a 25/60 pump, this is the same as a 15/60 pump.  The only difference is that our underfloor heating pump is black and the normal Grundfos pump on the market is red.  The reason for this is that our black underfloor heating pump is only sold to OEM’s and the red Grundfos pump is sold to merchants.

1. Fit the underfloor heating insulation.  Check that perimeter insulation has been fitted.  Tape all the joints.

2. Install the water underfloor heating manifold on the wall and connect the underfloor heating water pump pack to the manifold.

3. The underfloor heating wiring centre can also be fitted above the underfloor heating manifold.

4. Now, install the Henco underfloor heating pipework 16 x 2 mm as suggested in the project information, hand sketch or the CAD drawing.

5. Fill the underfloor heating pipework with water and perform a pressure test.  It is very important that the underfloor heating system is filled as the manufacturers recommendations, please see our underfloor heating instructions.

6.  The builder can now screed the floor and the electrican can connect all the room thermostats to the underfloor heating wiring centre when the screed is dry and safe to walk on.

7.  The Heatmiser PRT hard wired room thermostats are 3 core + earth.  The room thermostats are normally fitted beside the light switch in each room.

8. The underfloor heating pump and the underfloor heating actuators needs to be connected to the wiring centre.

9. Normally a two port valve by the boiler will be fitted on the flow pipework to the underfloor heating system after the boiler pump.

10.  The wiring centre has a boiler relay fitted inside.  The boiler relay will power up the two port valve and the two port valve will switch the boiler on.

11. There is no need for a separate timer for the underfloor heating system as our programmable digital room thermostats does the job.

We only supply water underfloor heating at Underfloor Heating Systems Ltd.  Electric underfloor heating is mainly used for existing floors and small areas such as a bathroom.

The installation cost is normally higher for a water underfloor heating system, but the running cost is lower than an electric underfloor heating system.

All of our standard underfloor heating system will come with an underfloor heating manifold. The manifold is the heart of the underfloor heating control system.

All ground floor insulation requirements must meet the current Building Regulations.  For the underfloor heating installer it is always important that there is mains water at the building site, as a pressure test will be performed of the wet underfloor heating system after the system has been installed.

All underfloor heating pipework must be protected from the sun and sharp objects.  If there is a risk of freezing, anti-freeze must be used when filling the underfloor heating pipework.

Check that a by-pass is fitted by the boiler as this is normally a requirement by the boiler manufacturer.  It is important to check that the boiler can cope with the underfloor heating water system.

It has been proven that wet underfloor heating systems can save at least 15 % – 20 % on the running cost compared to traditional heating methods.

A concrete floor solution is the best possible solution for a wet underfloor heating system.

Here at Underfloor Heating Systems Limited we only use very high quality underfloor heating products.  The underfloor heating pipe is from HENCO, one of the leading underfloor heating pipe manufacturers in the World.

Our wet underfloor heating manifolds are made in Germany by WATTS/DUMSER and are considered to be one of the best manifolds to use for wet underfloor heating systems.

Our electronic controls, such as our room thermostats and underfloor heating wiring centres are from HEATMISER, but we can also supply DANFOSS room thermostats.

The pump is made by GRUNDFOS and the underfloor heating mixing valve is made by RELIANCE WATER CONTROLS.  Please note that our underfloor heating mixer pack is a pre-made pack, ie the installer does not need to buy parts to connect the mixer and the pump to the underfloor heating manifolds.

Some underfloor heating companies will only sell a three port mixing valve and the underfloor heating installer will need to spend time and money to connect the mixer pack to the underfloor heating manifolds.

For any technical assistance please call the water underfloor heating technical department on 01905-616 928, we have over 30 years of underfloor heating experience in the UK and Europe. Underfloor Heating Systems Ltd have now been operating almost 10 years in the UK.

We offer a free quote service.  Please send us your floor plans for a free underfloor heating quote.  Plans can also be faxed to us to 01905-352 100, or sent by post to;

Estimating Department, Underfloor Heating Systems Ltd, Unit 1, 79 Friar Street, Worcester, WR1 2NT.

Self build market is one of the largest user of underfloor heating systems.  As heat pumps sales are increasing every year, it is natural that there is a growth in water underfloor heating systems as a heat pump and an underfloor heating systems is one of the most efficient heating systems available on the market today.  It is estimated that over 80 % of the self build market is fitted with underfloor heating systems.

In the past many UK installers/contractors were not familiar on how to install wet underfloor heating systems.  Over the last 10 years, this has changed dramatically.  Many plumbers and M & E contractors will now install underfloor heating water systems every week.

Modern water underfloor heating systems can be fitted almost to any building.  Here at Underfloor Heating Systems Limited we have even supplied our underfloor heating system to a house boat.

Underfloor heating systems are now much more affordable for any house builder and most proffesional installers/builders will be able to install the underfloor heating system themselves.

Some companies even use the underfloor heating system as a cooling system in the summer.

Finally, our 25 mm floating floor panels with built in grooves for our HENCO mulitlayer pipe 16 x 2 mm PEX/AL/PEX can be used with a Fermacell board if screeding is not practical.

A dry underfloor heating system is operated by electrical elements in the floor.  Here at Underfloor Heating Systems Ltd we do not supply dry underfloor heating systems, only wet underfloor heating systems are available from us.

Water underfloor heating systems are very easy to control as the floor surface temperature is very similar to the air temperature. All living areas would have it’s own programmable digital room thermostat.

Wet underfloor heating system can be used for both domestic and commercial building projects.

Many self builders install the underfloor heating water system themselves as it is not difficult to install.  An underfloor heating system might be a bit more expensive to purchase compared to a traditional radiator system, but the running cost is lower and the comfort levels are much higher.

In the past one of the drawbacks with wet underfloor heating has been the response time to heat up the building compared to a radiator system.  The modern solution is to operate the underfloor heating water system 24/7 with setback temperature during the day and the night.  It is cheaper to run the underfloor heating system this way.

For each underfloor heating system we sell, we will offer a hand sketch or a CAD drawing for a small charge of the pipe layout.  Project information about the underfloor heating loops are also included with a full set of underfloor heating instructions.  Any issues please call our underfloor heating technical department on 01905-616 928.

The water underfloor heating manifolds comes with ports available from 2 – 12 circuits and are fully fitted to galvanised fixing brackets.  Full instructions comes with every manifold.

We can also supply manifold extension couplers if the existing underfloor heating manifolds requires extra underfloor heating loops. With the use of the extension couplers, another underfloor heating manifold can be added to the existing underfloor heating manifold.

The manifolds will come with 16 x 2 mm PEX/AL/PEX multilayer fittings for our HENCO multilayer pipe.  We stock different size euroconus connectors for different size underfloor heating pipework.

Underfloor Heating Systems can supply the 1 ” ball valves with temperature gauges if required. The underfloor heating manifold must be fixed to a solid structure.  Underfloor Heating Systems Limited do not stock manifold cabinets, but we can get them from our manufacturer if required for a large project.

Always try to locate the underfloor heating water manifolds centrally in a building, to keep the underfloor heating pipework to correct lengths.

Our Henco 230 V underfloor heating actuators will fit on the return manifold.

The floor temperature is much lower than a radiator system so therefore any draughts are avoided.

If the property is well insulated and the floor construction is a screeded floor, then it is possible to operate the wet underfloor heating system at 35 degree C flow temperature, which means it is perfect to be used with heat pumps.

If a wet underfloor heating system is used with a condensing boiler, the condensing boiler will work much better with a wet underfloor heating system, compared to a radiator system as the boiler will operate at condensing temperatures.

Radiant heating systems are the most comfortable heating systems on the market.  Many argue that with a wet underfloor heating system it is possible to have the room thermostat set at 1 – 2 degree C lower than a radiator system as the heat is at the floor level and not at the ceiling level.

A wet underfloor heating system should create 15 % more practical space, ie no ugly radiator on the wall and the furniture can be located anywhere in the room.

Wet underfloor heating systems are perfect for high ceilings as the heat is where it is suppose to be.

One of the negative facts talked about wet underfloor heating is the slow response.  This is not an issue anymore as most wet underfloor heating system operate 24/7 with setback.  The use of programmable room thermostats has made this issue obsolete.

Another problem that many potential customers are concerned about is, if the wet underfloor heating system would leak.  The wet underfloor heating system will only leak if someone damaged the pipe.  The pipework will last as long as the property.  If the pipe has been damaged it is easy to fix with a coupler.

We are also advertising in Yell.com and our approved underfloor heating installers can install underfloor heating water systems all over the UK and Europe.

Our website can be found on all the major search engines, ie Google, Yahoo, BING and ASK. Just type in ‘underfloor heating systems’ and we will be at the top of the page on most search engines.

For a free water underfloor heating quote just email, fax or post the floor plans and we will produce an underfloor heating quote within a couple of hours.

We also offer free wet underfloor heating site visits.  Just contact the underfloor heating sales department on 01905-616 928 to arrange an appointment.

See our website for any underfloor heating technical issues or contact our technical department.

To order your underfloor heating system, just call us.  We accept credit/debit cards, cheque or bank transfer payments.  Every underfloor heating order will come with full instructions, project information and a hand sketch.  If required a CAD design can also be produced for the wet underfloor heating system layout.

Copper pipework are not used for modern wet underfloor heating systems as the copper would react with the screed and would result in damaged pipe.

Water underfloor heating systems will work with most heating sources, ie boilers, solar, wood burning stoves, heat pumps, etc.  These heat sources can be operated by gas, oil, coal, electricity, solar, wood or bio-fuels.

Underfloor heating water is very good for the indoor air quality as dust is not circulated and the heat is at floor level for the highest comfort levels available.

Underfloor heating systems is often used in areas where the floor can get wet, ie bathrooms, en-suite, swimming pools, etc.  When using underfloor heating by the swimming pool it is important to remember that the underfloor heating will mainly dry the floor, not heat the room. A fan heater for the swimming pool is still required.

For an existing property underfloor heating can still be fitted.  The first solution is to dig up the concrete floor and fit insulation, underfloor heating pipework and screed again.

If the floor construction is a timber suspended floor then the floor boards can be lifted and the water underfloor heating insulation fitted between the joists on top of high density insulation. The underfloor heating pipework is fitted between the joists and an infill is fitted in the air gap.

Another solution for an existing floor is to fit 50 mm battens on top of the existing floor.  Then 30 mm insulation between the battens and fill the 20 mm air gap with a lightweight sand/cement mix.  The underfloor heating pipe work would fit on top of the underfloor heating insulation.

Finally we do offer a 25 mm pre-grooved insulation panel.  The underfloor heating pipe can be fitted into the panel and a floating floor is fitted on top of the panel.  Additional insulation is required below the underfloor heating panel.