Would you replace your radiators with underfloor heating?

Our hall was once a Victorian school; it has large windows and a vaulted (insulated) ceiling so it tends to get cold in winter. Our present heating is ancient and we are planning to put in underfloor heating as we have a Kindergarten using the hall during the day and yoga and pilates classes in the evening so the heat is best at floor level. We have a small field so could use ground source although we are also considering air source, especially as we have no access to mains gas, plus there is a government incentive coming in next year.
Has anyone experience of underfloor heating in a community hall?

A word of warning: when friends of mine moved into one of the Nash Terraces in Regents Park the underfloor heating cracked up the antique furniture! This is about 50 years ago so perhaps systems are better now!

One thing that condensing boiler makers don’t tell you is that they only achieve the headline efficiencies of 90%+ when operating at flow temperatures of below 60degrees. Above that, and at typical wet radiator older design specification of 80degrees (modern systems tend to work on 65degrees), they might only achieve the typical 75% efficiencies of the old boiler you just chucked out.

This makes underfloor or over-large radiators significantly more efficient because they run at lower temperatures. One way out of this is to fit a weather compensator, which automatically modulates the boiler flow temperatures down, and into the high efficiency area, on the many milder winter days.

Only problem is many installers haven’t got the time or the knowledge to set them up properly.

You can still make significant saving with an older radiator system designed for 80C operation. Remember, the 80C is only required on the coldest days – I reckon 10-20% of heating days. On milder days, a properly set up weather compensator will turn down the boiler flow temperature, significantly increasing its efficiency.

Obviously, replacing existing radiators on such a system with larger ones, or double panel instead of single, etc, would also allow the boiler to operate at even lower temperatures.

I worked in an office with underfloor heating downstairs and radiators upstairs (the two floors were open-plan so all heating should have circulated). Unfortunately working downstairs we were cold whenever the external door was opened and those of us seated at our desks had considerable feet/leg ache from the underfloor heating.

I had a conservatory made and fitted. It is small, 9 ft by 7 ft. I also had underfloor heating fitted in it.
My electric bill became dearer – now I have a fan heater and a plug attached that switches off after 1/2 an hour. Perfect!

about to have electric underfloor heating put in but are concerned about removing some rads. not all areas will have underfloor. bath rooms and hall. kitchen floor and hallway are planned as underfloor with standard rads being used in living room .conservatory and bedrooms. thus hoping to get best of both worlds with an overall heating via under floor and rads as fast response for cold weather snaps etc.
really unsure to remove rads in hall though..this is a main junction between rooms and not sure floor heating is enough as when door is opened to street etc heat loss is rapid . plus not sure about selling on later of needed ..will buyers prefer to see a rad or be happy with underfloor? our current thoughts are to have both in hallway and use have thermostatic control on rads to assist here with high heat levels changes e.g. guests .doors open etc.