Domusa Dual Clima R EC: outdoor unit and Easy Connect indoor module (sold separately), to scale
Domusa Dual Clima R EC dimensions: dimensioned views, measurements by model and hydraulic connections
Domusa Dual Clima R and R EC outdoor unit on a white background
Domusa Dual Clima R and R EC heat pump next to a house terrace

Domusa Dual Clima R EC R32 heat pump for Easy Connect, 6 to 18 kW

Model
Regular price€4.013,78
/
Tax included. Shipping calculated at checkout.

  • 2 in stock
  • Backordered, shipping soon

At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

R32 air-to-water heat pump from 6 to 18 kW with Easy Connect for cascade, sensors and solar PV

The Domusa Dual Clima R EC is the version for the Easy Connect indoor module of the Dual Clima R monobloc air-to-water heat pump, with R32 and from 6 to 18 kW. Q-Tech delivers the set in a pre-assembled plant room, with the unit and the module already communicating and tested in our workshop.

Summary

Type Outdoor monobloc air-to-water heat pump with DC Inverter compressor
Brand and model Domusa Teknik Dual Clima R EC, 5 single-phase models
Use Heating, cooling and domestic hot water (DHW)
Heating output From 6.12 to 18.06 kW at A7W35, depending on model
Flow temperature Up to 60 °C
Efficiency Class A+++ at 35 °C and A++ at 55 °C; SCOP from 5.5 to 5.9 in a warm climate
Control Easy Connect indoor module (sold separately), with iConnect built in
Warranty 5 years on the compressor, extendable to 7 years under Domusa Teknik's conditions
Q-Tech installation Inside a pre-assembled plant room or on-site by an Expert Technician

R or R EC: where the control goes

Domusa sells the same outdoor unit in two versions. The difference is where the controller and accessories are connected: on the outdoor unit (R) or on an indoor module (R EC).

Version Dual Clima R R EC (this page)
Where accessories are connected On the outdoor unit On the Easy Connect module, inside the home
Controller Indoor control panel Easy Connect indoor module
iConnect (control from your phone) Optional, with the TKITDCL062 module Built in as standard
Cascade, humidity sensor and energy meter (solar PV) No Yes, managed by the Easy Connect
SG Ready Standard Standard
Power supply 230 V single-phase; 400 V three-phase on 16RT and 19RT 230 V single-phase
What you need to buy Only the outdoor unit Outdoor unit and Easy Connect, sold separately
Outputs, efficiency and list price The same for the 6 to 19 kW models

What is the Domusa Dual Clima R EC?

The Domusa Teknik Dual Clima R EC is a monobloc air-to-water heat pump for heating, cooling and DHW that runs on R32 and delivers flow temperatures of up to 60 °C. It is controlled from the Easy Connect indoor module, which is sold separately and is essential. The outdoor unit and the module communicate over Modbus through a 2-wire cable, according to the Domusa manual.

What the Easy Connect adds

With the Easy Connect module, all accessories are connected inside the home. According to Domusa, the module manages the buffer tank sensor, outdoor sensor, humidity sensor, SG Ready, system circulator, heating or cooling cascade and the energy meter, which makes it possible to use solar PV surplus. It also includes iConnect as standard to manage the heat pump from your phone.

What problem does it solve?

A home with solar PV, cooling underfloor or several units often ends up with controllers that do not talk to each other and with wiring running to the outdoor unit.

The R EC gathers those accessories in the Easy Connect, inside the home, with a heat pump rated class A+++ at 35 °C. Q-Tech calculates the demand before recommending a model or a cascade.

Technical data

Heat pump type Air-to-water, monobloc, DC Inverter
Refrigerant R32
Maximum flow temperature 60 °C
Heating operating range Outdoor temperature from −25 to 45 °C
Cooling operating range Outdoor temperature from 10 to 45 °C
Energy class A+++ at 35 °C and A++ at 55 °C
Power supply 230 V single-phase
Protection rating IPX4
Maximum water circuit pressure 3 bar
Equipment High-efficiency circulator, expansion vessel, control unit, flow meter and pressure gauge
Control Easy Connect indoor module, required
Connectivity iConnect built in as standard
Grid functions SG Ready
Made in Spain

Models and data by variant

Model Heating A7W35 Cooling A35W18 SCOP 35 °C warm climate Sound pressure at 1 m Dimensions (width × depth × height) Net weight Connection Minimum water volume Domusa reference
6R EC 6.12 kW 6.25 kW 5.6 46 dB(A) 1,115 × 415 × 900 mm 80 kg 1" 35 l TDCL000342
9R EC 9.03 kW 8.99 kW 5.5 48 dB(A) 1,115 × 415 × 900 mm 82 kg 1" 45 l TDCL000343
12R EC 11.95 kW 11.00 kW 5.8 49 dB(A) 1,115 × 415 × 900 mm 125 kg 1" 60 l TDCL000344
16R EC 16.02 kW 14.85 kW 5.9 51 dB(A) 1,115 × 415 × 1,320 mm 175 kg 1¼" 80 l TDCL000345
19R EC 18.06 kW 17.82 kW 5.8 52 dB(A) 1,115 × 415 × 1,320 mm 175 kg 1¼" 95 l TDCL000346

Data from the Domusa Teknik 2026 price list and Dual Clima R manuals. Power supply for all models: 230 V single-phase.

Compatibility and limits

  • Without the Easy Connect module (reference TDCL000376, in our shop) the R EC does not work; the price on this page is for the outdoor unit only.
  • Easy Connect options according to Domusa: energy meter CFTV000009, buffer tank sensor CDCL000196 and outdoor sensor AF TKITDCL044.
  • The R EC is single-phase only; for 400 V three-phase, the Dual Clima R has the 16RT and 19RT models, without connectivity.
  • Below the model's minimum water volume, Domusa specifies a buffer tank.
  • Domusa requires a water filter on the heat pump return, fitted before the circuit is filled.
  • For long winter power cuts, Domusa offers the anti-freeze drain valve or glycol in a short circuit with a separator tank.
  • Domusa includes commissioning in its price, excluding travel.
  • Installation and certification require a licensed installation company.

When this product is not the right choice

  • If you do not need cascade, a humidity sensor or an energy meter, the standard Dual Clima R needs no indoor module and accepts iConnect as an option.
  • If you need flow temperatures of up to 75 °C, the Dual Clima HT EC Pro runs on R290 and is also controlled with Easy Connect.
  • If there is no room for an outdoor unit, the Domusa NanoClima 4 and NanoClima 4 HDX 135 are installed indoors, with no outdoor unit.

Frequently asked questions

Do I need to buy the Easy Connect?

Yes. The R EC needs the Easy Connect indoor module, which is sold separately.

What is the difference from the Dual Clima R?

The outdoor unit has the same data. The R connects the controller and accessories on the outdoor unit; the R EC connects them on the Easy Connect, inside the home, and has iConnect built in.

Can it use the energy from my solar panels?

Yes, with the optional Easy Connect energy meter, which according to Domusa makes it possible to use solar PV surplus.

Does it work with radiators?

Yes, with radiators sized for low temperature. Domusa states that flow temperatures of up to 60 °C allow it to be used with radiators.

Is commissioning included?

Yes. Domusa Teknik includes commissioning in its price; the technician's travel is charged separately.

What is the lead time?

It is in stock at our warehouse. Because of its weight, transport is quoted separately.

Q-Tech installation and support

In an installation with Easy Connect, most of the work is wiring and configuration. That is why it makes sense to receive it in a pre-assembled plant room: Q-Tech mounts the module with the rest of the plant room, configures the sensors and communication with the unit, and tests it in our workshop. The plant room arrives configured and ready to connect; the final connection is made by the site installer or by Q-Tech with the on-site Expert Technician by the day. More detail in Pre-Montaje Avanzado and in Expert Technician workshop pre-assembly.

When another company installs it or it is integrated into an existing system, Q-Tech first carries out a verification visit with the on-site hourly Expert Technician and then a remote or on-site pre-commissioning check, so that the Domusa visit is not wasted on an unfinished detail.

For sizing questions, book a technical call or message us on WhatsApp. More units in heat pump systems and in our heat pump services.

Documentation

Availability and lead times: this item is in stock at our warehouse. Occasionally, depending on the time of year, the stock update may contain an error. If no units are available when you place your order, we will order it urgently and inform you immediately of the updated delivery time. Because of its weight, transport is quoted separately.

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