Greenstar i System (18kW to 24kW)

Available with flexible finance options 0% APR We are a credit broker, not a lender.
  • Small to medium sized homes
  • System boiler

The Greenstar i System boiler is one of Worcester Bosch’s most popular system boilers, and is suitable for small to medium sized homes.

This boiler can also be used with their high-efficiency Greenstore cylinders for a complete Worcester system solution for your home.

I want this boiler

Features & Benefits

  • Simple boiler controls with clear information display
  • Suitable for homes where the heating system includes a hot water storage cylinder
  • Choice of controls enables greater comfort and economy*
  • Can be used with Greenskies solar panels for energy and cost savings
  • Low energy pump reduces electrical usage
  • Large Condensesure style siphon built into the boiler – eliminates frost risk**

*With installation of optional built-in diverter valve

**The Condensesure Siphon has been proven to be effective at preventing froze condensate at -15°C for a sustained period of 48 hours. 32mm pipework must be used and should not exceed 3 metres in length

Specifications

Greenstar 18i System

ErP efficiency rating

- A

ErP data sheet

LPG model available

Wave Compatible*

Solar Compatible

Control Options

Central heating output (kW)

18

Dimensions (mm)height x width x depth

710 x 400 x 330

Hot water flow rate 35°c ∆T(litres per minute)

N/A

Hot water flow rate 40°c ∆T(litres per minute)

N/A

Greenstar 21i System

ErP efficiency rating

- A

ErP data sheet

LPG model available

Wave Compatible*

Solar Compatible

Control Options

Central heating output (kW)

21

Dimensions (mm) height x width x depth

710 x 400 x 330

Hot water flow rate 35°c ∆T (litres per minute)

N/A

Hot water flow rate 40°c ∆T (litres per minute)

N/A

Greenstar 24i System

ErP efficiency rating

- A

ErP data sheet

LPG model available

Wave Compatible*

Solar Compatible

Control Options

Central heating output (kW)

24

Dimensions (mm) height x width x depth

710 x 400 x 330

Hot water flow rate 35°c ∆T (litres per minute)

N/A

Hot water flow rate 40°c ∆T (litres per minute)

N/A

How much could you save a year?

Our A-rated Worcester Bosch boilers make you toasty warm on the inside thanks to the money they could save you on your annual heating bill. See how much better off you could be by upgrading to a new A-rated boiler below.

Questions about boiler replacement?

If we haven’t covered it here, please give us a call on 0330 400 1083*

Pack more warmth into your pad with insulation

Yes, your boiler does a lot of the hard graft keeping your home cosy but it’s just the tip of the iceberg when it comes heating up life. Did you know that you lose heat through your walls if they’re not insulated?

Fear not, we have cavity wall insulation and solid wall insulation and we’ll install them whether you’re a customer or not – maybe even for free.

Signs you’re in safe hands

From our safety accreditations to our award for installation services, we’re happy to have achieved a lot in our time. Most of all, we’re happy that our credentials give customers the confidence they need and trust us to upgrade their warmth.