Heatmiser neoStat vs neoAir

Heatmiser's neoStat and neoAir are the wired and wireless halves of the same neo heating control system. The neoStat is a hard wired, mains powered programmable thermostat with a volt free switch; the neoAir is battery powered and fully wireless, so nothing needs to be chased into the wall where it sits¹. Both do the same job: they hold a room to a set temperature on a schedule, and both can be linked to the neoHub so the whole house can be run from the neoApp on a phone or tablet¹.

The practical difference is almost entirely about the cable. If a room already has thermostat wiring, a neoStat is a straightforward replacement; if it does not, a neoAir avoids the wiring altogether. Beyond that, the two share the same smart platform, the same app and the same compatibility with solar, heat pump and most boiler based systems².

The two thermostats side by side

Both models sit in Heatmiser's neo range, which is built around zone by zone control: each thermostat looks after one room or zone, and each can be controlled individually from a smartphone or tablet once a neoHub is added⁶. The neoStat carries the features people buy the range for, including holiday and temperature hold, soft touch operation and energy saving Optimum Start, which brings each zone up to temperature ahead of its schedule so the heating is not running flat out at the moment it is needed⁶.

The headline distinction is the power source. Heatmiser describes the split plainly: "neoAir offers a complete wireless solution whereas the neoStat is a mains powered thermostat with a volt free switch"¹. The neoAir's battery life is stated at over 12 months⁴, and the current V3 versions of both thermostats are listed as battery powered (neoAir) and hard wired (neoStat) programmable thermostats⁷.

Both are compatible with water radiators and underfloor heating, and both are sold as the thermostat option in single zone underfloor heating kits, where the choice between wired and wireless is offered as a straight either/or¹⁰.

Which rooms suit which model

The choice between the two usually settles itself room by room. The neoAir is described by the maker as "perfect for new builds and the retrofit market" and particularly suited to extensions or anywhere mains cable has not been installed for the thermostat⁴. Because it is battery powered, it can go on any wall in the room without chasing cable, and its RF switch enables wireless control of the boiler and pump, avoiding cable runs to the heat source as well⁴.

The neoStat suits rooms where the wiring already exists. Heatmiser says that if you have a 3 core wired thermostat, "you can easily upgrade to the neoStat", and that in most situations wired thermostats can be upgraded to neoStats without any additional wiring¹². The neoStat Touch is 230v powered, which the maker positions as ideal for replacing existing mains powered thermostats².

Both models allow stand-alone setup for multi-room control, so a house can start with one thermostat and grow¹⁰. A common pattern in underfloor heating kits is a wired neoStat in rooms with cable and a wireless neoAir where there is none, with the option to upgrade to smart control later by adding the neoHub¹⁰. The neoAir pairs with the UH8-RF v2 wiring centre, designed for use with the neoAir v3 thermostat, for multi zone systems⁷.

For heat pump homes, the neoStat Pro adds passive room cooling via reverse cooling technology with air or ground source heat pump systems, supported by floor and air temperature probes and a built-in humidity sensor³. The neoStat-HC covers fan coil systems, with a system-wide switch between heating and cooling for two pipe systems¹³.

Connecting smart devices such as SmartThings

Both thermostats become smart controls when a neoHub is added. The neoHub connects to the home broadband router and communicates wirelessly with the thermostats, supporting up to 32 zones and processing over the air firmware updates for all connected devices¹. The neoApp runs on Android and Apple devices¹.

The voice and platform support is shared across the range. The neoStat Touch and neoStat Pro work with Amazon Alexa, Google Assistant and Apple HomeKit via the neoHub², and Google Home compatibility via the neoHub is confirmed for the neoStat, neoAir and neoStat-e¹⁴.

The newest addition is Samsung SmartThings. In May 2026 IMI Heatmiser announced that its neo smart control system is now integrated with SmartThings by Samsung, bringing the neo range into the Samsung smart home ecosystem⁵.

One compatibility point worth checking before buying: the neoStat Touch and neoStat Pro are not compatible with the first generation neoHub², and the neoStat-HC pairs only with the neoHub Gen 2¹³. Homes with an older hub need to confirm which generation they have before adding thermostats.

On the network side, the neoStat and neoAir communicate wirelessly with the neoHub to form what the maker describes as a reliable and scalable mesh network¹. Each neoStat acts as a repeater, helping to eliminate range issues¹. The neoAir can join the mesh but does not relay signals; it communicates directly by RF to its receiver, which means the neoHub is not required for the heating itself to operate¹². The NeoAir V2-M also supports single or multiple wireless air sensors when paired to the neoHub and neoApp¹⁵.

How the neo system affects energy self-sufficiency at home

Zone control is where a system like this earns its keep. The neo thermostats support multiple zone control, giving the benefit of controlling each room individually rather than heating the whole house to the same schedule¹⁶. That is the mechanism by which a household cuts its use of gas or electricity: rooms that are empty stay off, and rooms in use are held at the temperature they need. An independent assessment of smart thermostats by National Energy Action compared the Honeywell evohome, Heat Genius and Heatmiser neo to establish heating costs for households using them¹⁷.

The neo system also fits heat pump and solar installations, which is where much of the interest in energy independence now sits. The range as a whole is described as fully compatible with solar, heat pump and most boiler technologies¹⁶, and the neoStat Touch and neoStat Pro carry the same compatibility when linked with the neo system². For homes with an air or ground source heat pump, the neoStat Pro's passive cooling via reverse cooling extends the control into summer³.

The limits are worth stating as firmly as the benefits. The neo system controls heat; it does not generate it, and the smart layer depends on three things outside the household: the broadband router the neoHub plugs into¹, the cloud service behind the neoApp, and Heatmiser itself for firmware updates and app support. The neoApp's remote features stop working if the broadband or the service is down, although the neoAir keeps operating its zone directly by RF without the hub¹². A household that wants to reduce dependence further can read about heating controls and energy independence and about cloud and data dependence in smart controls.

Public programmes point the same way. Wales's Warm Homes Nest scheme designs packages for individual properties, with no standard package of measures; they may include a new boiler, central heating system, loft insulation, and for some properties newer technologies such as solar panel PV, air source heat pumps and external wall insulation¹⁸.

Renting: what landlords and tenants should know

The neoAir's wireless design makes it the more natural fit for rented property, since there is no mains cable at the thermostat and no chasing wires into walls⁴. That said, the RF switch and any wiring centre still need connecting at the heating system, so this is work on the property, not a plug-in accessory.

The rules around changing things in a rented home are clear. Smart Energy GB advises renters to discuss any changes with their landlord first, as each meter may form part of the tenancy agreement¹⁹, and notes that a smart meter can be installed at no extra cost to the renter or the landlord²⁰. The same principle applies to heating controls: the heating system is the landlord's asset.

For landlords, the picture is different. Social housing programmes in Wales fund smart technologies precisely so tenants can control their energy use²¹, and Heatmiser has written about how the Renters' Rights Act creates opportunities for landlords to modernise heating controls²². A landlord fitting neo controls can set zone schedules across a property without depending on the tenant to program individual thermostats. More background is in heating controls in rented and social housing.

Problems, help resources and support contacts

Heatmiser publishes user guides and quick user guides for each generation: neoStat V1, neoStat V2, neoAir V1 and neoAir V2, plus a combined quick guide for the V2 models²³. If a thermostat misbehaves, the version number determines which guide applies, and the installer who fitted the system is the first point of contact for a fault in the control wiring.

If the problem is the electricity supply rather than control, the contacts differ. In Northern Ireland, NIE Networks offers 24/7 support on 03457 643 643 for reporting a loss of electricity supply²⁴, and its Powercheck web application provides real-time fault information as a BETA service²⁵. Keypad prepayment customers having problems using or topping up should contact their energy supplier, while NIE Networks handles cases where there is no power or the meter is faulty²⁶. A suspected gas leak is reported immediately to the National Gas Emergency Service on 0800 111 999²⁷.

For the thermostats themselves, the neoHub's over the air updates mean firmware fixes arrive without a visit¹, and Heatmiser's own FAQ covers setup questions such as Google Home pairing¹⁴. Fault finding on the wider system, from wiring centres to zone valves, is covered in heating control faults and troubleshooting.