Domusa gas boilers and components
Domusa Teknik gas condensing boilers and their original components
A Domusa Teknik gas condensing boiler provides heating and domestic hot water by recovering the heat in the flue gas vapour. Q-Tech brings together here the Domusa gas boiler we sell today, the floor-standing Avanttia NG with a stainless tank, and the original components Domusa offers for it.
Domusa includes commissioning in its price, excluding the technician's travel. Boiler transport is quoted separately.
Products in this collection
| Product | What it is | Key data |
|---|---|---|
| Avanttia NG | Floor-standing gas condensing boiler with stainless tank | 24, 28 and 33 kW; 120 or 150 l tank; NOx class 6 |
| Avanttia NG outlet kit | Boiler connection pipes | Outlet to the left, right or top |
| Ø60/100 coaxial flue | Coaxial kits, pipes, elbows and adapter | Up to 10 m horizontal and 11 m vertical |
| Ø80/125 coaxial flue | Coaxial kits, pipes, elbows and adapter | Up to 20 m horizontal and 22 m vertical |
| Ø80/80 twin-pipe flue | Twin-pipe kit, pipes, elbows, deflector and grille | Factory connection of the boiler; up to 30 m |
| Vertical flue roof flashing | Roof penetration for the coaxial vertical flue | Flat roof or pitched from 15° to 45° |
| Outdoor sensor | Outdoor temperature sensor | Adapts the boiler output to the weather |
| CONFORT WiFi | Programmable connected thermostat | Control from your phone |
| CONFORT CONTROL | Weekly programmable wired thermostat | Programmed on the thermostat itself |
| Lago FB OT+ | Remote control with room sensor | Modulating, over OpenTherm |
| DX cathodic protection | Protection for the DHW tank | Option for the Avanttia NG |
Data from the Domusa Teknik 2026 price list, catalogue and installation manual.
How to choose
- Boiler: choose the Avanttia NG model by heating output (24, 28 or 33 kW) and hot water (120 or 150 litre tank).
- Connection: add an outlet kit in the direction the pipework arrives from.
- Flue: Ø80/80 twin-pipe with no adapter, or Ø60/100 or Ø80/125 coaxial with its adapter, depending on the length of the run; for a coaxial vertical outlet, add the roof flashing.
- Control: CONFORT WiFi thermostat to operate it from your phone, CONFORT CONTROL to programme it by the week without an internet connection, or Lago FB OT+ remote control to modulate the output; with the outdoor sensor, the boiler adapts to the weather.
Why buy your Domusa from Q-Tech?
- You receive it inside a pre-assembled plant room: Q-Tech assembles, configures and tests it in our workshop. See the process in Pre-Montaje Avanzado.
- If another company installs the boiler, Q-Tech first carries out a verification visit with the on-site hourly Expert Technician and the pre-commissioning check before the Domusa visit.
- To choose with the data of your case, book our paid professional technical advice; for lead times, message us on WhatsApp.
Frequently asked questions
Does it work with propane?
Yes. The Avanttia NG leaves the factory set for natural gas and a technician authorised by Domusa converts it to propane.
Is commissioning included?
Yes. Domusa Teknik includes it in its price; the technician's travel is charged separately.
Which flue do I need?
It depends on the route to the outside wall or roof. If in doubt, send us the route on WhatsApp.
What is the lead time?
They are in stock at our warehouse. Because of its weight, boiler transport is quoted separately.
FP54·261108