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| AED/Defibrillator | | Located at the ferry pier | | by the notice board |
| Artist Studio | Christine Thery | www.christinethery.com | 086 3297482 | Painter and printmaker |
| Ferry M.V. Thresher | Kevin/Ross | www.heirislandferry.com | 086 8092447 | |
| PizzHeiria | Craig Moore | http://www.pizzheiria.com | online booking | artisan pizzas |
| Heir Island House | Craig Moore | heirisland.house | Online booking | Accommodation |
| Heir Island Retreat | Sarah Matthews | www.heirislandretreat.ie | 087 2856757 | Yoga Retreat Centre / Self catering accommodation |
| Heir Island Sailing School | Kevin McCormack | www.heirislandsailingschool.com | 089 9624266 | Sailing School and kayak hire |
| Heir Island Holistics | Rosemary Williams | | 086-1963465 | Indian head massage and aromatherapy massage |
| Island Cottage Restaurant | John/ Ellmary | www.islandcottage.com | 028 38102 | Fri, sat, sun lunch |
| public toilet | | located back of heir island house | | |
| | | | |
| Holiday Homes / Self Catering Accommodation | Colette Colleran | www.heirisland.ie | 086 2219792 | |
| | | | |
| Michael John Harte | | 087 9924745 | |
| Sarah Matthews | http://heirislandretreat.ie | 087 2856757 | |
| Tadhg O’Driscoll | www.heirisland.ie | 087 0684557 | |