Heating specialist Grant UK has launched the Vortex Pro Combi XS, the slimmest 26kW oil-fired condensing combi boiler currently on the market. At 515mm wide, the XS is designed as a replacement for older, standard efficiency oil-fired combis.

The Grant Vortex Pro Combi XS has almost identical characteristics on both combustion efficiency and domestic hot water performance as its larger version, and uses all of the existing components, meaning it will be familiar to installers of Grant products.

To save on space, however, the 24-litre expansion vessel, normally located behind the front door of the boiler, is supplied as an externally fitted vessel kit.

“As a result of feedback from our G-One approved installer network, we developed this more compact Pro Combi XS to ensure our combi boilers can directly replace older inefficient models,” explained Anna Wakefield, marketing manager for Grant UK.

“Grant has been manufacturing combi boilers for around 17 years and today one in every three oil boilers we sell is a combi version. The Vortex Pro Combi XS completes our range and meets the requirements of our installer network.”

Extra-quiet when in operation, the Vortex Pro Combi XS includes neon diagnostic indicators for improved usability, and an ErP energy efficiency rating of ‘A’ for heating and ‘B’ for hot water.

The Vortex range features 46 different model variations, with outputs from 12 to 70kW and SAP2009 efficiencies up to 93.3% gross (97% gross for SAP2005).