Nest Thermostat Compatibility Guide (UAE)

Nest Gen3 Thermostat (U.S version) general requirements
  • Nest Thermostats are designed to work with 24V US spec AC systems. They require installation of a conversion kit as well as bypassing of PCB in order for them to work with 220V UAE AC systems
  • Nest Thermostats can be retrofitted to work on single and 3 fan speed modes
  • Single fan speed mode requires the presence of 4 wires to thermostat location
  • Three fan speed mode requires the presence of 6 wires
  • Thermostat locations with 3 wires, requires the installation of an additional wire saver module to add the 4th wire for single fan speed.
  • Less than 6 wires at a thermostat location requires the pulling of a new set of 6 wire panel cables for three fan speed activation.
Non-compatibility: cases where Nest cannot be installed
  • AC units with inverter compressor or DC current fan motor (solutions for LG, OGeneral and Mitsubishi ACs using bespoke interface are available)
  • Window type AC units
  • VRV type ACs
  • Where ACs are connected to a BMS or wired smart home system
  • Chilled water systems with modulating actuator motor (1-10v)
  • UK and European spec Nest thermostats are designed to work with boilers and water heaters and are not configured to work with AC systems
Specific compatibility guidelines
  • As a general rule, apartments located within towers are typically served by a central chiller, as such would have 6 wires
  • In some newly build apartments with modulating actuator motors, there would a requirement to replace actuator motors with standard on/off models. This can only be established post inspection. Cost of actuators motors varies between AED 350-500 per unit. In very rare cases, valve assembly would also have to be replaced (cost AED 1500 per unit)
District cooling:
  • AC units within areas with district cooling such as the Palm, Jumeirah Islands, JLT, Motor City and Sports City would have thermostats with 6 wires
Villas: (in non district cooling areas)
a) LG:
  • Found in majority of Emaar villas across Springs, Meadows and Arabian Ranches as well as Al Furjan
  • All units have 3 wires to thermostat location
  • Requires installation of an additional module (add 4th wire) for single fan speed
  • Three fan speed requires pulling of 6 wires. Smaller capacity units have single stage fan that requires installation of fan transformer (AED 390)
  • New LG ACs with modulating compressor and DC fan motor. Require installation of a bespoke Nest interface/module approx cost (AED 660) per module
b) OGeneral:
  • Found in many Emaar villa communities.
  • All units have 3 wires to thermostat
  • Requires installation of an additional module for single fan speed.
  • Three fan speed requires pulling of 6 wires 
  • New OGeneral ACs with modulating compressor and DC fan motor. Require installation of a bespoke Nest interface/module approx cost (AED 850) per module
c) York & Daikin:
  • Both York and Daikin units would have 4 wires through to thermostat location
  • York prevalent in The Villa project. Daikin is installed in all Arabian Ranches 2 communities 

d) Trane:

  • Older units would  have 8 wires through to thermostat location 
  • Newer units with LCD type thermostat would have 2 wires going to thermostat location
  • Prevalent in Jumeirah Park and other Nakheel communities
d) Carrier:
  • Mexican spec : 4 wires
  • Egyptian spec: 5 wires (found in Damac Hills), requires wire saver for 3 fan speed.
  • Egyptian spec: 4 wires (found in Arabella Mudon), ACs would have DC fan units. Requires bespoke interface. 
e) Rheem : 6 wires found in Mira and 5 wires found in Lantana
f) American breeze: 6 wires found in some older Emaar villas in Meadows and Lakes as well as Jumeirah Islands 
g) Mitsubishi: All Mitsubishi units require pulling of new wires as well as installation of an interface (provided CN90 connector is present on PCB). Found in older villas of non-free hold communities
h) Honeywell: Very rarely installed in villas. Would typically have 6 wires
i) Siemens: 7 or 8 wires, found in some Jumeirah Park villas
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Showing 16 comments
  • Noora Al Muhairi

    Good afternoon,

    I would like to enquire about the installation service for the nest thermostat, i have a ogeneral ac system for a bedroom and would like to know if its compatible and can install a nest thermostat…. What is the quotation? And does it include the installation only and the thermostat is charged separately… I live in abu dhabi, so is it possible to install…. Thanks

    • Host-Homeiqoo-Admin

      Hi Noora,
      Yes the Nest can be installed on OGeneral AC. There would be two installation options, single fan speed including wire saver module (OGeneral has 3 wires and Nest needs 4 wires) cost AED 725. Three fan speed (low, medium and high) would require pulling new 6 wire cable. Cost wise, installation would be AED 650 + AED 300 to pull new wires. The Nest Gen3 is AED 950 per unit.
      We do undertake installations in Abu Dhabi, a transport fee would apply
      Please let us know if you require any additional information

  • Chris

    Hi, is Nest or Nest E compatable with Arabian raunches 2 Daikin units.

    • Host-Homeiqoo-Admin

      Hi Chris, the Daikin has the 4 wires required for the Nest E so single fan speed conversion is possible

  • Vladimir

    Hi, i have 6 units of Trane OLD type, but not 8 wires my one all of them 10 wire going to termostat. Community JVT (Villa) Just what to ask any additional cost to instal Nest 3gen termostat?

    • Host-Homeiqoo-Admin

      Hi Vladimir,
      In case of 10 wires, there would be no requirement to pull any additional wires.

  • Deepak

    Hi I have Chiller water system. Is Nest thermostat compatible

    • Host-Homeiqoo-Admin

      Hi Deepak, yes Nest can be installed with chilled water (FCU) systems. Should the building be new you would need to check that you have an on/off actuator motor rather than a modulating one

  • Naeem NM

    I live in Remraam al thamam and want to know if i need to install anything else prior to installing the nest

    • Host-Homeiqoo-Admin

      HI Naeem, the nest thermostat is a 24V system, installation with UAE AC system requires additional conversion parts to deal with voltage difference as well as by passing of the current AC control unit.
      HomeIQ Support

  • Vic

    Hi, I have Honeywell Lyric™ T5 Wi-Fi Thermostats (RCHT8610WF), can they be fitted to new R410 O General 3 wire AC units (ARGA45FMTA)?
    I know for a fact, these units require a “C” wire.

    • Host-Homeiqoo-Admin

      Hi Vic,
      The Honeywell is a 24V system. Installation with UAE 220V ACs requires installation of additional conversion parts as well as by passing of AC current control unit. The Honeywell does require 4 wires.
      HomeIQ Support

  • Michael

    I have trane 2 wire thermostat in my place. Can someone tell me if nest will work and how to connect the black and red wire on the nest?


    • Host-Homeiqoo-Admin

      Hi Michael, installing Nest Thermostat with your 220V Trane AC would require installation of conversion parts, pulling of 6 wire cable as well as rewiring the indoor unit to bypass the AC control board. The above is included in our certified Nest PRO installation
      HomeIQ Support

  • Ben

    I am looking to install a Nest thermostat in a new house in Dubai Hills Estate.
    The current system is Midea. Is it possible to install a Nest here?

    • Host-Homeiqoo-Admin

      Hi Ben,
      Installation of Nest with 5 wire Midea AC is possible. There would be two installation options; 2 fan speed using the existing 5 wires, for 3 fan speed installation we would also need to install a wire saver module that provides the required 6th wire.
      In terms of costings, the Nest Gen3 thermostat is AED 899+VAT and comes with 2 years warranty. 2 fan speed installation AED 595+VAT including cost of conversion parts. 3 fan speed installation would be AED 595+175 for the wire saver so total installation AED 770+VAT
      Please let us know if you require any additional information
      HomeIQ Support

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