Please note that all Gas Boilers must only be installed by rgii.ie registered & approved fitters. Flu Exhaust Kits are available for your Boiler and are purchased separately.
Ideal Logic 18 HE System Boiler & Flue (LOGIC SYSTEM IE)
The Ideal Logic 18 HE System Boiler is a compact, energy-efficient and dependable heating solution, ideal for sealed domestic systems in Irish homes. Designed for straightforward installation and cupboard fit, it’s well suited to both replacement projects and new builds where space is limited. With a high HARP (SEDBUK) efficiency rating and an integrated water flow sensor, it delivers consistent performance even at low system pressures.
Key Features
Output: 18kW system boiler
High HARP (SEDBUK) efficiency rating
Integrated water flow sensor for reliable operation at low system pressures
Compact, lightweight design – fits into a standard kitchen cupboard
Concealed pipe connections at the base for a neat finish
Back-lit display with clear, easy-to-read pressure gauge
LPG conversion available
Wide range of additional flueing options
Low component count for improved reliability
7-year manufacturer warranty
Please note:
Must be installed by an RGII-registered and approved installer (Ireland)
Flue exhaust kits are required and sold separately
We offer reliable delivery services throughout the Republic of Ireland, with straightforward delivery charges for both trade and DIY customers. Delivery options are confirmed at checkout based on your order and delivery Eircode.
Delivery Charges & Delivery Times
Delivery Type
Delivery Area
Delivery Charge
Delivery Time
Small Items
Republic of Ireland
€9.99
3–4 working days
Large & Heavy*
Standard delivery area
€29.99
5–7 working days
Extra Large*
Standard delivery area
€50.00
5–7 working days
Paint 5L or less**
Standard delivery area
€19.99
5–7 working days
Swipe sideways to compare delivery options.
Small Items
Delivery area
Republic of Ireland
Charge
€9.99
Delivery time
3–4 working days
Large & Heavy*
Delivery area
Standard delivery area
Charge
€29.99
Delivery time
5–7 working days
Extra Large*
Delivery area
Standard delivery area
Charge
€50.00
Delivery time
5–7 working days
Paint 5L or less**
Delivery area
Standard delivery area
Charge
€19.99
Delivery time
5–7 working days
*Standard delivery policy. Promotional delivery rates may apply during campaigns.
Additional Information
FREE delivery on eligible Small Items and Large & Heavy orders over €1,499, within the standard delivery area only.
Special Order and Catalogue Products require an additional 5 working days.
FREE collection of old appliances is available through WEEE Ireland when purchasing qualifying large appliances.
FREE Click & Collect is available for items in stock at your selected branch.
Large & Heavy and Extra Large items are available within our standard delivery area only.
Paint delivery Paint in tin cans 5L or less is available for delivery. Larger sizes and paint supplied in plastic buckets are available for Click & Collect only.
TJ O'Mahony offers a 30-day returns policy on eligible unused products, giving you additional time beyond the statutory 14-day cooling-off period applicable to most online consumer purchases.
Eligible products can be returned for a refund or exchange within 30 days of delivery or collection, provided they are unused, in their original and re-saleable condition, complete with all supplied parts and accessories, and accompanied by proof of purchase.
Please note: Return restrictions apply to certain products, including Mixed Paint, certain Bagged Building Products, Solid Fuel, Special Order, Non-Stock and Catalogued Products.
Your statutory rights in relation to faulty, damaged, incorrectly supplied or non-conforming goods are not affected.
