After over 17 years, a not-so-happy returning customer
I bought a kit from Nu-Heat 17 years ago to provide UFH throughout our modest South London home, which I prepared for and which I installed myself. the finished heating system has performed flawlessly since, with only wear-and-tear replacements necessary - pump/actuators/valves etc.
Our place is now being extended so, naturally, I approached the same company to quote for the kit, for an insulated ground floor to be screened/tiled and between joists in the upper floors.
Prices were surprisingly reasonable given the current economic climate, and delivery of the (so-far) first phase super-fast once the design stage has been finalised. Nu-heat are happy to prepare and deliver in stages and, with excellent customer support throughout, the experience has been an altogether painless one thus far.
I only wish I had the energy and time to install the kit myself, as I remember the self-install experience fondly and the resultant sense of satisfaction was immense. This kit appears straightforward to install, the design/technical teams are very knowledgable, and the Nu-Heat site is awash with helpful instructions, tips and advice.
Underfloor heating really is a DIY-er's dream. You should try it!
Update:
I speak of Nu-Heat products as a DIY-er's dream. On this occasion I had to resort to a firm, Master Build Developments Ltd, drawn from the Nu-Heat list of approved contractors, to install the UFH in our new spaces.
The poor quality of the UFH install became plain to see, following the unfortunate necessity of lifting the sub-standard loft flooring supplied by our builders:
1. The insulation between joists under the UFH pipework throughout was littered with sawdust, notch cut-outs waste, and other debris, simply left in situ by the UFH contractor and not cleared. This would result in a substantially reduced performance in the so-called 60-minute fire rating in the event of a fire.
2. I told the UFH contractor that all the towel rails in the house are supplied from the same UFH flow & return pipework - in the event of a hot water demand for either (a) the UFH manifolds or (b) the DHW cylinder, the heated water also provides heat to all the bathroom towel rails. That was the idea. Inexplicably, the UFH contractor bridged the flow & return supply pipework to the loft UFH manifold before heated water can get to the manifold and towel rail. Bridging this pipework effectively means there is no hot water trickle to the loft towel rail to heat it up unless there's only a UFH demand.
3. The existing system is wired to time controls which allow me to efficiently schedule on/offs etc. The UFH contractor did not properly integrate the new components with the existing set-up, and instead managed to rig the electrical connections so that it was 'on constant'. The only control over when the UFH operates is only via the individual zone thermostats.
4. Nu-Heat explained that any recourse to addressing these issues lies directly with the UFH contractor, and has absolved itself of any Duty of Care. Redress with the UFH contractor is not possible, as the contractor's site no longer exists.
5. Nu-Heat has not offered a solution which allows the control of the new UFH installation to integrate with the existing controls.