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Please note. All boilers must be installed by OFTEC registered & approved fitters.
Flu Exhaust Kits are available for your Boiler and are purchased separately.
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Deliver reliable, high-efficiency heating with the Firebird 20–26kW (Elco) Slimline Silverpac Oil Boiler, a robust outdoor condensing oil boiler engineered for traditional wet central heating systems with separate hot water cylinders. With an ErP A efficiency rating and built from premium-grade steel, this outdoor boiler is ideal where internal plant space is limited and reliable performance is essential.
Designed for outdoor use, the Slimline Silverpac features a weather-resistant casing and a built-in frost protection thermostat to safeguard against cold weather, enhancing reliability throughout the year. Fully insulated to reduce heat loss and equipped with a high-performance low NOx Elco burner, this boiler delivers efficient, clean combustion and quiet operation.
Service access is simplified with a removable back panel, making maintenance and commissioning straight-forward for installers. Supported by a 5-year warranty (terms & conditions apply), it’s a dependable choice for residential heating projects where performance and long service life matter.
Key Features
Technical Specification
| Energy Rating | A |
|---|---|
| Brand | Firebird |
| Provided by | TJ O'Mahony |
| Delivery Rule | large & heavy |
Last update: 17 August 2026
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 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 |
*Standard delivery policy. Promotional delivery rates may apply during campaigns.
30-Day Returns
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.
