Get €10 off on orders over €50 - Add TJY1222 at checkout (T&C apply)
E-MAIL [email protected]
Can we help you? Chat with an expert nowChat with an expert now
Greenstar 30I Combi Ng C/W Flue
Make Worcester Bosch
Model Greenstar 30i Combi Gas Boiler
Is Condensing Condensing
Efficiency Rating 94%
Standard Warranty 5 Years
Band Rating A Rated
ERP Rating A Heat A Water
Central Heating Max. Output 30kW
Flow Rate 10.8 l/m
LPG Compatible Yes
Mounting Wall Mounted
Product Description
The Greenstar 30i is a highly reliable condensing combi gas boiler, designed and manufactured by Worcester Bosch that comes with a variety of features and benefits.
Why install a Greenstar I combi
The Greenstar I combi boiler is one of Worcester Bosch’s most popular combi boilers as it features instant hot water and can fill a standard kitchen sink in only 45 seconds.
What sort of home is this boiler suitable for?
An output rating of 30 kW makes the Greenstar 30i the perfect choice for larger homes with 2 or more bathrooms and a higher demand for heating and hot water.
What is the efficiency rating of this boiler?
This unit features an ErP (Energy Related Product directive) rating of A for both heat and hot water, thanks to its high heating efficiency of 94% and flow rate of up to 12.3 litres a minute. When installed with a Wave Smart thermostat, the Greenstar 30i can achieve an A+ ErP rating.
Is the output going to suit my home?
This unit features an 30kW output rating. Meaning it is suitable for those larger homes with more than one bathrooms and a higher demand for heating and hot water.
Is a combi boiler suitable for my home?
Combi boilers are great for smaller homes or properties where space may be limited as they don’t require an external water tank or cylinder. Instead, everything is wrapped up into a single cost-effective unit.
What features does this unit have?
Worcester Bosch have included many features and benefits within the Greenstar 30i, including simple boiler control with clear information to give you maximum control over the unit, a condensate discharge resilient to freezing up to -15°C, a low energy pump to reduce electrical usage, frost protection as standard - so you can be sure your boiler won’t let you down in the cold winter months - and also features a choice of controls that enables greater comfort and economy, helping to save you money on your energy bills.
Does this range come with any options?
As well as the 30 kW unit, Greenstar boilers are also available with a 25 kW output rating. While the 30 kW is suited to larger homes with a high demand for heating and hot water, the 25 kW is a better option for medium-sized homes that don’t have such an excessive need for heating and hot water.
Where can this boiler be installed?
This is a compact wall-mounted boiler that will help to save you some much needed space in the home.
How long is the warranty period?
As standard, the Greenstar 30i comes with a 5 year warranty that can be increased to 7 years when installed by a Worcester accredited installer.
To make the warranty valid, you’ll need to register it within 30 days and have the boiler serviced annually to avoid the warranty ending early.
| Brand | GreenStar |
|---|---|
| Weight | 100.0000 |
| Provided by | TJ O'Mahony |
| Delivery Rule | extra large |
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.
