How Heatmiser Thermostats Maximise Comfort in Wet Underfloor Heating Systems

Water underfloor heating is a brilliant heat emitter because it works with low flow temperatures, spreads warmth evenly, and keeps rooms comfortable without the hot and cold swings you can get from high temperature emitters. The catch is control. Without the right thermostat setup, a wet underfloor heating system can feel slow to respond, certain rooms drift warmer than you want, and the boiler or heat pump ends up running at the wrong times.

Heatmiser thermostats are popular in wet underfloor heating for one simple reason: they make zoning practical. You can set each room to the temperature that suits how you actually use it, then let the wiring centre and actuators do the heavy lifting quietly in the background.

The goal is not clever gadgets for the sake of it. The goal is comfort you can rely on, paired with schedules that reduce wasted run time.

The advantage of Heatmiser neo for water underfloor heating

Heatmiser's neo platform is built around a straightforward idea: room by room control, unified through one app when you want it. With a neoHub in place, neo thermostats can be managed from the neoApp, giving you central oversight without turning your setup into a complicated building management project.

A few neo features that matter day to day:

• Proper zoning at scale: A single neoHub can manage a large number of heating zones, which suits multi room wet underfloor heating layouts.
• Room level scheduling: Each thermostat can follow its own weekly program, so a kitchen, bedroom, home office, and bathroom can all behave differently.
• Quick changes without drama: Temporary overrides and hold functions are practical when life changes midweek.
• Cleaner handover for installers: Clear zone naming and app visibility reduce those call backs where a homeowner cannot remember which stat controls which area.

From an installer perspective, the biggest win is predictable behaviour. When a zone calls for heat, the wiring centre opens the correct actuator, then enables the pump and heat source output as required. From a homeowner perspective, the big win is that each room stays where you set it, rather than one thermostat trying to represent the whole property.

Thought to keep in mind: underfloor heating comfort comes from consistency, and consistency comes from stable control.

Zoning: getting multi room comfort without constant tweaking

Zoning means you control each area separately, usually one thermostat per room or per distinct space. In wet underfloor heating, each zone typically maps to one manifold port and one thermal actuator. When the thermostat asks for heat, the actuator opens and allows flow through that loop.

A simple approach that works well in most homes:

• Bedrooms as their own zones so sleep comfort is consistent.
• Bathrooms on a slightly different schedule to match morning and evening use.
• Open plan kitchen and living as one zone if the space genuinely behaves as one thermal area, or split into two if solar gain and cooking heat make the kitchen run hotter.

Zoning raises a useful question for both homeowners and installers: do you want one room to dictate comfort for every other room, or would you rather each room take care of itself?

Weekly schedules with neoStat, Touch, and Slimline: what changes, and what stays the same

Heatmiser's range covers different looks and user experiences, yet the day to day control principles stay familiar.

neoStat: practical, room focused control

neoStat models are common in wet underfloor heating because they deliver the essentials clearly. You typically get multiple time and temperature events per day, which means you can set a morning comfort period, a daytime setback, an evening comfort period, then an overnight temperature.

Useful scheduling habits for water underfloor heating:

• Start earlier than you would with radiators if the floor build up is thick or heavily tiled, the system benefits from a little lead time.
• Use setbacks rather than full off: a small drop maintains comfort and can reduce recovery time.
• Keep the changes sensible: huge temperature swings invite longer run times.

neoStat Touch: when you want visibility at a glance

Touch models suit users who prefer a more visual interface, particularly in larger homes where guests or family members may adjust settings. Clear display feedback helps avoid the common mistake of raising the setpoint far above the desired room temperature, which does not speed up underfloor heating in the same way it can appear to with other emitters.

Slimline thermostats: discreet, familiar wall control

Slimline options fit spaces where aesthetics matter, while still supporting room based programs. In bathrooms and bedrooms, that slimmer format can make the control point feel less intrusive.

Across all three, the core best practice stays the same: set schedules around occupancy, keep setbacks realistic, and aim for steady comfort rather than aggressive daily peaks.

Integration with UH8 wiring centres for seamless control

In many wet underfloor heating installs, the wiring centre is the bridge between low power room control and the higher power switching needed for actuators, pumps, valves, and boiler enable signals.

Heatmiser's UH8 wiring centre is designed around this workflow:

1. Thermostat calls for heat in a specific zone.
2. UH8 energises the correct actuator output for that zone.
3. System outputs activate as needed, typically including the underfloor heating pump and a switched live or volt free signal to the heat source controls.

This is where multi room control becomes clean. Each room can ask for heat independently, while the wiring centre coordinates the shared equipment so it runs only when at least one zone needs it.

Installer tip from real projects: label every zone at the wiring centre and at the thermostat stage, then match that naming inside the app if you are using neo. This single step speeds up commissioning and makes fault finding far calmer.

One manifold or several: scaling with wiring centres

Larger properties often use more than one manifold, and it is common to use one wiring centre per manifold so actuators stay local and wiring runs stay sensible. The principle stays the same, the zones just multiply.

Choosing between 12v and 230v thermostats: the decision points that matter

Heatmiser systems are available in both 12v and 230v variants, and the right choice depends on the job, the wiring approach, and the wider system design.

230v thermostats: familiar wiring and broad compatibility

A 230v thermostat setup is common where mains wiring at the thermostat position is straightforward, and where you want the simplest match to standard wiring centre inputs. Many installers prefer the familiarity, especially in retrofit situations.

Practical reasons to choose 230v:

• Mains wiring is already available at the stat position
• You want a direct match to common actuator and wiring centre arrangements
• You are keeping the control wiring conventional for easier servicing

12v thermostats: low voltage at the wall and structured control wiring

12v thermostat systems are often chosen in new builds or major refurbishments, where you can plan cable routes and keep low voltage wiring to thermostats. Heatmiser's 12v thermostats pair with the UH8 N style wiring centre, which provides the low voltage supply and the zone inputs in a tidy package.

Practical reasons to choose 12v:

• You want low voltage at the thermostat position
• You prefer a structured wiring layout that supports easier alterations later
• You are already running data or control cabling routes and want consistency

Safety and compliance always come first, and the right approach is the one that suits the property and the electrical design. If you are the homeowner, ask your installer which option fits your wiring routes and future plans best.

Getting the comfort right: small setup choices that make a big difference

A thermostat can only control what it can measure, and underfloor heating behaves best when the system is commissioned thoughtfully.

Consider these checks during setup:

• Thermostat placement: avoid direct sun, drafts, or mounting on an external wall that runs colder than the room.
• Floor sensor use where appropriate: in rooms with sensitive floor finishes, a floor probe can protect the floor and keep surface temperatures sensible.
• Actuator mapping: confirm each thermostat truly opens the correct loop, especially on multi manifold systems.
• Set realistic temperatures: wet underfloor heating is designed for steady warmth, not rapid peaks.

Homeowner friendly habit: once your schedules work, leave them alone for a week and track comfort. Underfloor heating rewards patience, and constant tweaks can mask what the system is actually doing.

Where to buy trusted Heatmiser stock

If you want genuine Heatmiser thermostats, neo components, and wiring centres from a specialist supplier, ThermRite is a reliable place to source the right parts for wet underfloor heating projects. Product availability matters on install day, and buying from a dedicated underfloor heating supplier helps you keep a project moving.

Summary and next step

Comfort in wet underfloor heating comes down to room by room control, sensible schedules, and clean integration between thermostats, actuators, and the wiring centre. Heatmiser's neo ecosystem supports that workflow neatly, with zoning that matches how homes are lived in and controls that installers can commission with confidence.

If you are planning a new underfloor heating install or upgrading your controls, take five minutes to map your rooms into zones, decide whether 12v or 230v fits your wiring plan, then speak to ThermRite to source the manifold assemblies and circulation systems that match your system.

Frequently Asked Questions

How many zones can I run with Heatmiser neo?

A neoHub can manage a large number of zones, which suits multi room wet underfloor heating in bigger homes, while each room keeps its own schedule and setpoint.

Do I need one thermostat per room for wet underfloor heating?

One thermostat per room gives the most consistent comfort, though open plan areas are sometimes grouped if they behave as one space and have similar usage patterns.

Can Heatmiser thermostats control the underfloor heating pump and boiler?

Yes, when integrated through a wiring centre such as the UH8 range, a call for heat from any zone can open the correct actuator and trigger outputs for the pump and heat source controls.

Should I use a setback temperature or turn underfloor heating off between periods?

A setback often works better because floors and slabs take time to cool and warm, so gentle temperature drops can maintain comfort and reduce long recovery periods.

Is 12v or 230v better for my thermostat wiring?

Neither is universally better. 230v tends to suit straightforward retrofit wiring, while 12v can be ideal where you want low voltage at the wall and you are planning cable routes from the start.

A quick note on scale: how many zones neo can handle

Heatmiser specifies up to 32 zones per neoHub, which is plenty for most houses, and it is also a helpful planning number for installers when a project starts to grow. Once you get beyond that zone count, the design conversation shifts to network structure, control architecture, and how the property is split between manifolds.

For many wet underfloor heating installs, the sweet spot is simpler: clear room zoning, a neoHub for unified control, and proper integration with pump and temperature control assemblies so the switching stays organised.