Is your kitchen ready for a combi oven?

Most 10-grid and larger combi ovens need a three phase (400V) supply. Smaller models are often available (or can be converted) in single phase (230V).

Check your consumer unit for three incoming connections rather than one, or ask your electrician to confirm your available power consumption.

Combi ovens need a plumbed cold water connection with an isolation valve for servicing. Most ovens connect to a 3/4" BSP valve cold water connection.

Most manufacturers* require filtration or softening as a condition of warranty. *Rational combi ovens with CareControl have an automatic descaling program.

Buy 6/10 grid CTU water softner here.
Buy 20/40 grid CTU water softner here.

If a suitable drain is above or level with the oven, a gravity waste connection is enough. If not, a pumped drain kit lifts waste water to the nearest drain point.

Tundish and Drain Kit are recommended for XS, 6 and 10 grid. Floor drainage or Drain Pump and Drain Kit needed for 20 and 40 grid units.

For electric units, an optional UltraVent or Condensation breaker.
For gas units, it's a legal requirement to have a Canopy & Gas interlock. Please liaise with your gas engineer.

Measure the full delivery route, not just the final installation spot — doorway widths, corridor turns, and any stairs the unit needs to pass through.

Check for anything along the delivery path that could obstruct a large combi unit — tight corners, low doorframes, or narrow gaps between fixed units.

Allow a minimum of 50mm clearance to the left-hand side of the oven for ventilation and servicing access.