Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579
The Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579 is a premium Natural Gas combination boiler designed for larger and busier homes requiring powerful central heating and strong instantaneous domestic hot water performance.
Part of Worcester Bosch's flagship Greenstar 8000+ range, the GR8701iW 36 C NG combines high performance with a modern white casing, full-colour display, backlit touch controls and installer-friendly features designed to simplify fitting, servicing and everyday operation.
With a maximum domestic hot water input of 36kW, central heating output of up to 33.7kW and a hot water flow rate of up to 15.2 litres per minute at a 35°C rise, this model is particularly well suited to medium to larger homes with higher hot water demands, subject to correct system sizing and adequate mains water pressure.
Optional Worcester Intelligent Filling System compatibility
Compatible with Bosch EasyControl and selected Worcester controls
Solar compatible
Compact 5mm side clearances
Wall-mounted internal installation
Low NOx emissions
Up to 12-year guarantee available subject to Worcester Bosch terms and qualifying installation
Boiler Specification
Brand: Worcester Bosch
Range: Greenstar 8000+
Model: GR8701iW 36 C NG
Product Type: Gas Combination Boiler
Manufacturer Part Number: 7736702579
EAN / GTIN: 4069143014240
Gas Council Number: 47-800-45
Fuel Type: Natural Gas
Boiler Type: Condensing Combination Boiler
Maximum DHW Input: 36kW
Maximum CH Output: 33.7kW
Central Heating Output Range: 5.1-33.7kW
DHW Flow Rate at 35°C Rise: 15.2L/min
DHW Flow Rate at 40°C Rise: 13.5L/min
Minimum DHW Activation Flow: 1.9L/min
DHW Temperature Range: 35°C-60°C
Declared Load Profile: XL
ErP Space Heating Class: A
ErP Water Heating Class: A
Seasonal Space Heating Efficiency: 94%
Water Heating Efficiency: 87%
Sound Power Level: 53dB
NOx Emissions: 25mg/kWh
Maximum Horizontal 60/100 Flue Length: 10m, subject to approved flue configuration
Maximum Vertical 60/100 Flue Length: 14m, subject to approved flue configuration
Expansion Vessel Capacity: 10 litres
Expansion Vessel Pre-Charge: 0.75 bar
Maximum Heating System Pressure: 2.5 bar
Protection Rating: IPX4D
Mounting: Wall Mounted
Installation Location: Internal
Colour: White
Dimensions: 780mm H x 440mm W x 365mm D
Height: 780mm
Width: 440mm
Depth: 365mm
Appliance Weight: 47kg
Lift Weight: 41kg with front and side panels removed
Total Packaged Weight: 55kg
Powerful Hot Water Performance
The Greenstar 8000+ 36kW has been designed for homes with higher domestic hot water requirements. With a flow rate of up to 15.2 litres per minute at a 35°C temperature rise, it offers stronger hot water delivery than lower-output combi models when adequate mains water pressure and flow are available.
Premium Controls & Connectivity
A full-colour display with backlit touch controls provides intuitive access to boiler settings and diagnostics. The Greenstar 8000+ is also compatible with Bosch EasyControl and selected Worcester Bosch controls, helping installers create a more responsive and efficient heating system.
Installer-Friendly Design
Pre-plumbing jig supplied as standard
Rear piping capability
Accessible electrical connections
Drop-down control fascia for servicing
Front-access pressure relief valve
Large condensate siphon designed to help reduce freezing risk
Optional Intelligent Filling System compatibility
Digital system pressure display
Only 5mm side clearance required
Ideal For
Medium to larger homes
Busy family properties
Properties with higher instantaneous hot water requirements
Homes with one main bathroom and demanding shower use
Replacement combi boiler installations
Modern central heating upgrades
Properties requiring a premium Natural Gas combi boiler
Guarantee Information
The Greenstar 8000+ is supplied with a standard 8-year guarantee. Worcester Bosch offers extended guarantee options when the boiler is installed with qualifying Worcester Bosch accessories and registered in accordance with current terms. Up to 12 years may be available through qualifying Worcester Bosch installer or loyalty arrangements. Always check the latest Worcester Bosch guarantee terms at the time of installation.
Important Product Note
This listing is for the Worcester Bosch Greenstar 8000+ 36kW Natural Gas Combi Boiler - 7736702579.
Flue kit, system filter, heating controls, chemicals, pipework, fittings and installation accessories are not included unless specifically stated elsewhere in the product listing.
Always confirm the required flue arrangement, heating load, domestic hot water demand, mains water pressure and system design before ordering. Published maximum hot water flow rates require adequate dynamic mains water pressure and incoming flow.
Professional Installation Required
This gas boiler must be installed, commissioned and registered by a suitably qualified Gas Safe registered engineer. Installation must comply with current UK gas safety requirements, Building Regulations and Worcester Bosch installation instructions.
Delivery Times
All our deliveries are made by some of the countries most trusted couriers, including Royal Mail, PacelForce, DHL , Fastway Curriers
For most larger sized deliveries, you will receive a call from the courier an hour before the scheduled delivery time.
Free Delivery
Free delivery when you spend £150+ on all our stocked items, up to the maximum 20kg in weight (UK & Ireland Only) To be eligible for this service, you must place your order before 1pm on the previous day.
Delivery Drop Off
It is important to note that we use external shipping couriers. They are responsible for delivering the item(s) to the kerb-side. They are not responsible for delivering items into your home*.
*Please note, for large orders we advise that you seek assistance from friends or neighbours to assist with moving your order, as often the driver will not be able to assist you. Some items may be delivered on a pallet. It is your responsibility to dispose of the pallet, however, we recommend keeping it for the first 14 days in case you need to return your item(s).
Failed Deliveries
In the unlikely event that delivery is attempted when you are not at home, we will contact you by phone and re-book another time that suits you. Please note, there may be a re-delivery charge added at our discretion, which will be reviewed on a case by case basis.
Direct Deliveries from Distribution Centers
To help you receive your items as quickly as possible, parts of your order may be dispatched directly from a distribution center (Ie) Amazon. If this is the case, you will be contacted directly by them to arrange delivery for the products concerned. Please note, these items will arrive at a different time to products dispatched from our head warehouse. Some distribution centers may take between 2-3 days to deliver items.
Non-Stocked Items
Some items are ordered into our warehouse especially for your orders. This means there may be additional lead times on your order arriving. The estimated delivery time for non-stocked items is 5-7 working days.
For orders that contain a mixture of stock and non-stock items, excluding items delivered directly from distribution centers, we will deliver all items together. We will make you aware of this when we phone or email you to confirm the delivery date. You will be given the option to receive them separately as well, however there may be additional shipping charges.
Shipping Rates
All Orders to the UK & Ireland *ONLY*up to 20kg £150+ is Free
Pallet Rates are priced on application and order... delivery lead times will also vary based on post code.
Returns
Returns are subject too a 50% re-stocking charge.
- Items installed/fitted without professional understanding IE Oftec/SafeGas Registered Installer certificates, invalidate any warranty of said item bought.. This is however is at the companies discretion.
- All products must be inspected within 24hrs. Goods are non-returnable after this period.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Goods including but not limited to printed circuit boards, control boxes, chemicals, hazardous materials, flammable liquids or gases. Please ask if you are unsure if you can return your goods.
Some items are not returnable such as PCB Boards and Boilers if they are opened, There also will be a 25% Handling fee for All Items if accepted for return.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer unless otherwise instructed by Spares Direct.
There are certain situations where only partial refunds are granted (if applicable) Any item not in its original condition, is damaged or missing parts for reasons not due to manufacturer / supplier error Any item that is returned more than 30 days after delivery
Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable) If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund, please contact us at info@sparesdirect.ie
Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable) We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at info@sparesdirect.ie and send your item to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
Unwanted goods or Failed deliveries of items bought If for any reason you order from us and the item has been shipped, but you no longer wish to have the item, the goods should be returned to us at the consumers cost. The price of goods will be refunded upon delivery/inspection (please note carriage cost will NOT be refunded. This also applies to missed deliveries/collection of goods from currier depot.
Shipping To return your product, you should mail your product to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579
The Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579 is a premium Natural Gas combination boiler designed for larger and busier homes requiring powerful central heating and strong instantaneous domestic hot water performance.
Part of Worcester Bosch's flagship Greenstar 8000+ range, the GR8701iW 36 C NG combines high performance with a modern white casing, full-colour display, backlit touch controls and installer-friendly features designed to simplify fitting, servicing and everyday operation.
With a maximum domestic hot water input of 36kW, central heating output of up to 33.7kW and a hot water flow rate of up to 15.2 litres per minute at a 35°C rise, this model is particularly well suited to medium to larger homes with higher hot water demands, subject to correct system sizing and adequate mains water pressure.
Optional Worcester Intelligent Filling System compatibility
Compatible with Bosch EasyControl and selected Worcester controls
Solar compatible
Compact 5mm side clearances
Wall-mounted internal installation
Low NOx emissions
Up to 12-year guarantee available subject to Worcester Bosch terms and qualifying installation
Boiler Specification
Brand: Worcester Bosch
Range: Greenstar 8000+
Model: GR8701iW 36 C NG
Product Type: Gas Combination Boiler
Manufacturer Part Number: 7736702579
EAN / GTIN: 4069143014240
Gas Council Number: 47-800-45
Fuel Type: Natural Gas
Boiler Type: Condensing Combination Boiler
Maximum DHW Input: 36kW
Maximum CH Output: 33.7kW
Central Heating Output Range: 5.1-33.7kW
DHW Flow Rate at 35°C Rise: 15.2L/min
DHW Flow Rate at 40°C Rise: 13.5L/min
Minimum DHW Activation Flow: 1.9L/min
DHW Temperature Range: 35°C-60°C
Declared Load Profile: XL
ErP Space Heating Class: A
ErP Water Heating Class: A
Seasonal Space Heating Efficiency: 94%
Water Heating Efficiency: 87%
Sound Power Level: 53dB
NOx Emissions: 25mg/kWh
Maximum Horizontal 60/100 Flue Length: 10m, subject to approved flue configuration
Maximum Vertical 60/100 Flue Length: 14m, subject to approved flue configuration
Expansion Vessel Capacity: 10 litres
Expansion Vessel Pre-Charge: 0.75 bar
Maximum Heating System Pressure: 2.5 bar
Protection Rating: IPX4D
Mounting: Wall Mounted
Installation Location: Internal
Colour: White
Dimensions: 780mm H x 440mm W x 365mm D
Height: 780mm
Width: 440mm
Depth: 365mm
Appliance Weight: 47kg
Lift Weight: 41kg with front and side panels removed
Total Packaged Weight: 55kg
Powerful Hot Water Performance
The Greenstar 8000+ 36kW has been designed for homes with higher domestic hot water requirements. With a flow rate of up to 15.2 litres per minute at a 35°C temperature rise, it offers stronger hot water delivery than lower-output combi models when adequate mains water pressure and flow are available.
Premium Controls & Connectivity
A full-colour display with backlit touch controls provides intuitive access to boiler settings and diagnostics. The Greenstar 8000+ is also compatible with Bosch EasyControl and selected Worcester Bosch controls, helping installers create a more responsive and efficient heating system.
Installer-Friendly Design
Pre-plumbing jig supplied as standard
Rear piping capability
Accessible electrical connections
Drop-down control fascia for servicing
Front-access pressure relief valve
Large condensate siphon designed to help reduce freezing risk
Optional Intelligent Filling System compatibility
Digital system pressure display
Only 5mm side clearance required
Ideal For
Medium to larger homes
Busy family properties
Properties with higher instantaneous hot water requirements
Homes with one main bathroom and demanding shower use
Replacement combi boiler installations
Modern central heating upgrades
Properties requiring a premium Natural Gas combi boiler
Guarantee Information
The Greenstar 8000+ is supplied with a standard 8-year guarantee. Worcester Bosch offers extended guarantee options when the boiler is installed with qualifying Worcester Bosch accessories and registered in accordance with current terms. Up to 12 years may be available through qualifying Worcester Bosch installer or loyalty arrangements. Always check the latest Worcester Bosch guarantee terms at the time of installation.
Important Product Note
This listing is for the Worcester Bosch Greenstar 8000+ 36kW Natural Gas Combi Boiler - 7736702579.
Flue kit, system filter, heating controls, chemicals, pipework, fittings and installation accessories are not included unless specifically stated elsewhere in the product listing.
Always confirm the required flue arrangement, heating load, domestic hot water demand, mains water pressure and system design before ordering. Published maximum hot water flow rates require adequate dynamic mains water pressure and incoming flow.
Professional Installation Required
This gas boiler must be installed, commissioned and registered by a suitably qualified Gas Safe registered engineer. Installation must comply with current UK gas safety requirements, Building Regulations and Worcester Bosch installation instructions.
Delivery Times
All our deliveries are made by some of the countries most trusted couriers, including Royal Mail, PacelForce, DHL , Fastway Curriers
For most larger sized deliveries, you will receive a call from the courier an hour before the scheduled delivery time.
Free Delivery
Free delivery when you spend £150+ on all our stocked items, up to the maximum 20kg in weight (UK & Ireland Only) To be eligible for this service, you must place your order before 1pm on the previous day.
Delivery Drop Off
It is important to note that we use external shipping couriers. They are responsible for delivering the item(s) to the kerb-side. They are not responsible for delivering items into your home*.
*Please note, for large orders we advise that you seek assistance from friends or neighbours to assist with moving your order, as often the driver will not be able to assist you. Some items may be delivered on a pallet. It is your responsibility to dispose of the pallet, however, we recommend keeping it for the first 14 days in case you need to return your item(s).
Failed Deliveries
In the unlikely event that delivery is attempted when you are not at home, we will contact you by phone and re-book another time that suits you. Please note, there may be a re-delivery charge added at our discretion, which will be reviewed on a case by case basis.
Direct Deliveries from Distribution Centers
To help you receive your items as quickly as possible, parts of your order may be dispatched directly from a distribution center (Ie) Amazon. If this is the case, you will be contacted directly by them to arrange delivery for the products concerned. Please note, these items will arrive at a different time to products dispatched from our head warehouse. Some distribution centers may take between 2-3 days to deliver items.
Non-Stocked Items
Some items are ordered into our warehouse especially for your orders. This means there may be additional lead times on your order arriving. The estimated delivery time for non-stocked items is 5-7 working days.
For orders that contain a mixture of stock and non-stock items, excluding items delivered directly from distribution centers, we will deliver all items together. We will make you aware of this when we phone or email you to confirm the delivery date. You will be given the option to receive them separately as well, however there may be additional shipping charges.
Shipping Rates
All Orders to the UK & Ireland *ONLY*up to 20kg £150+ is Free
Pallet Rates are priced on application and order... delivery lead times will also vary based on post code.
Returns
Returns are subject too a 50% re-stocking charge.
- Items installed/fitted without professional understanding IE Oftec/SafeGas Registered Installer certificates, invalidate any warranty of said item bought.. This is however is at the companies discretion.
- All products must be inspected within 24hrs. Goods are non-returnable after this period.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Goods including but not limited to printed circuit boards, control boxes, chemicals, hazardous materials, flammable liquids or gases. Please ask if you are unsure if you can return your goods.
Some items are not returnable such as PCB Boards and Boilers if they are opened, There also will be a 25% Handling fee for All Items if accepted for return.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer unless otherwise instructed by Spares Direct.
There are certain situations where only partial refunds are granted (if applicable) Any item not in its original condition, is damaged or missing parts for reasons not due to manufacturer / supplier error Any item that is returned more than 30 days after delivery
Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable) If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund, please contact us at info@sparesdirect.ie
Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable) We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at info@sparesdirect.ie and send your item to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
Unwanted goods or Failed deliveries of items bought If for any reason you order from us and the item has been shipped, but you no longer wish to have the item, the goods should be returned to us at the consumers cost. The price of goods will be refunded upon delivery/inspection (please note carriage cost will NOT be refunded. This also applies to missed deliveries/collection of goods from currier depot.
Shipping To return your product, you should mail your product to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
Política de reembolso
Returns
Returns are subject too a 50% re-stocking charge.
- Items installed/fitted without professional understanding IE Oftec/SafeGas Registered Installer certificates, invalidate any warranty of said item bought.. This is however is at the companies discretion.
- All products must be inspected within 24hrs. Goods are non-returnable after this period.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Goods including but not limited to printed circuit boards, control boxes, chemicals, hazardous materials, flammable liquids or gases. Please ask if you are unsure if you can return your goods.
Some items are not returnable such as PCB Boards and Boilers if they are opened, There also will be a 25% Handling fee for All Items if accepted for return.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer unless otherwise instructed by Spares Direct.
There are certain situations where only partial refunds are granted (if applicable) Any item not in its original condition, is damaged or missing parts for reasons not due to manufacturer / supplier error Any item that is returned more than 30 days after delivery
Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable) If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund, please contact us at info@sparesdirect.ie
Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable) We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at info@sparesdirect.ie and send your item to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
Unwanted goods or Failed deliveries of items bought If for any reason you order from us and the item has been shipped, but you no longer wish to have the item, the goods should be returned to us at the consumers cost. The price of goods will be refunded upon delivery/inspection (please note carriage cost will NOT be refunded. This also applies to missed deliveries/collection of goods from currier depot.
Shipping To return your product, you should mail your product to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
Info@sparesdirect.ie
02895 434 399
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