At Viridus Energy, we are proud to supply Ariston’s award-winning heating, hot water and air conditioning systems across Ireland.

Founded in Italy in 1930, Ariston has grown into one of the world’s leading names in domestic comfort. From compact, hydrogen-ready gas boilers to air source heat pumps, heat pump water heaters and air conditioning, every Ariston product is built around the same idea — dependable comfort, lower running costs and a smaller carbon footprint.

Ariston Gas Boilers: Compact Design, Serious Efficiency

Ariston’s ONE-series gas boilers pack a remarkable amount of technology into a cabinet small enough to fit inside a standard kitchen cupboard. Every model uses Ariston’s patented XtraTech™ heat exchanger and carries an extended warranty as standard.

  • Clas ONE and Clas ONE R: The workhorse of the range — a compact combi boiler with excellent hot water performance in 24, 30 and 38 kW outputs, plus a rear-flue Clas ONE R option for tighter installations.
  • Clas System ONE: A system boiler for homes with a stored hot water cylinder, sharing the same compact footprint and efficiency as the Clas ONE.
  • E-Combi ONE and E-System ONE: Straightforward, easy-to-install boilers delivering reliable A-rated performance at an accessible price point.
  • Alteas ONE+ and Genus ONE+ WiFi: The premium end of the range. Both are 20% hydrogen-ready and controllable from anywhere through the Ariston NET app, with the Alteas adding a black glass fascia and Ariston’s Cube RF thermostat.

Ariston Heat Pumps: Renewable Heating, Cooling and Hot Water

The Nimbus range of air-to-water monobloc heat pumps is Ariston’s answer to low-carbon home heating. Inverter-driven and running on R32 or R290 refrigerant, Nimbus units reach A+++ seasonal efficiency while staying quiet enough to sit comfortably beside a patio or back door.

  • Nimbus Compact M NET R32: A floor-standing unit with an integrated hot water cylinder — heating, cooling and domestic hot water from a single appliance.
  • Nimbus Plus M NET R32: A wall-hung or floor-standing hydraulic module for heating and cooling, ideal where a cylinder is already in place.
  • Nimbus Pocket M NET R32: The most compact hydraulic module in the range, designed for retrofit work where space is at a premium.
  • Nimbus Pocket M R32 Cascade: Multiple units linked in cascade for larger homes and light commercial buildings.
  • Nimbus Hybrid Universal: A hybrid system that pairs a high-efficiency heat pump with an existing boiler, so a home can move towards renewable heating without replacing everything at once.

Every Nimbus model connects to Ariston NET, letting homeowners and installers monitor and adjust the system remotely.

Ariston Hot Water and Air Conditioning

Beyond heating, Ariston covers the rest of a home’s comfort needs.

  • Nuos Plus S2 Wi-Fi: An air source heat pump water heater that uses up to 80% less energy than a traditional electric cylinder, with R290 refrigerant and hot water up to 65°C.
  • Prios NET split air conditioning: Wall-mounted units in 2.5, 3.5, 5.0 and 7.0 kW outputs for cooling, heating and cleaner air, with Wi-Fi control built in.
  • Deos dehumidifiers: Quiet, connected dehumidifiers in 12, 16 and 21 litre-per-day capacities for damp-prone rooms.
  • Mobis portable air conditioners: Plug-in cooling for rooms where a fixed installation isn’t practical.

Why Choose Viridus Energy?

Viridus Energy supplies the Ariston range to installers and merchants throughout Ireland, backed by the same technical support, spares availability and training we provide across every brand we carry. Our team can help you specify the right product, size a heat pump correctly, and keep a system running long after it is commissioned.

Homeowners can register an Ariston boiler or heat pump warranty on our warranty registration page.

To talk to us about the Ariston range, or to arrange a quotation, contact the Viridus Energy team today.

View our Complete Ariston Product Range

Clas ONE

3 products

Clas ONE R

2 products

Clas System ONE

3 products

E-Combi ONE

2 products

E-System ONE

2 products

Alteas ONE+

1 product

Genus ONE+

3 products

Air Source Heat Pumps

27 products

Air Source Heat Pump Water Heaters

2 products

Split Air Conditioning

4 products

Portable Air Conditioners

3 products

Dehumidifiers

3 products