Worcester Bosch oil boilers · Oxfordshire
Worcester Bosch oil boilers in Oxfordshire
Compare Worcester Bosch oil boilers for a new installation, boiler replacement or heating upgrade. Oxyplumb brings Worcester Accredited Installer expertise, OFTEC registered engineers and a seven-year guarantee to your new oil heating system.
Worcester Bosch oil boilers with a seven-year guarantee
A new oil boiler should suit your home and provide confidence for the years ahead. As Worcester Bosch Accredited Installers, we offer a seven-year guarantee on our Worcester Bosch oil boiler installations. Our OFTEC registered team plans the appliance, oil supply, flue and heating controls as one complete project.
Accredited installation. Properly planned oil heating.
We fit a Greenstar System Filter, commission your new boiler and register the installation. Then, we explain the controls and help you plan annual servicing. You receive a clear quotation and a complete handover from one local team.
Explore Worcester Bosch oil boilers
First, compare oil combi, system and regular boilers below. Each range has its own manufacturer photograph and complete model specification table. Then, speak to Oxyplumb about the heating output, hot-water arrangement and installation layout that suit your property.
Oil combi boilers
Oil combi
Worcester Bosch Greenstar Heatslave II boilers
Choose this indoor oil combi when you want heating and hot water from one floor-standing appliance. The Heatslave II fits beneath a suitable removable worktop. First, we check mains pressure, hot-water demand and service access. Then, we plan the flue and oil supply around a practical kitchen or utility-room position.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible 1 | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Max DHW output (kW) | Hot water flow rate | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| Greenstar Heatslave II 12/18 2022+ | 7 731 600 260 | B A | Oil | Yes | Yes | 18 | 855 x 520 x 600 | 18 | 15 | 124 |
Worcester Bosch range information
Published Heatslave II model comparison
| Specification | 12/18 | 18/25 | 25/32 |
|---|---|---|---|
| Maximum hot-water flow (litres/min, ±15%) | 15 | 18 | 22 |
| Hot-water test: temperature rise for 90 litres drawn at maximum flow | 40°C | 40°C | 40°C |
| Minimum dynamic inlet pressure for maximum flow (bar) | 1.5 | 1.2 | 1.6 |
| Primary water capacity (litres) | 62 | 63 | 64 |
| Dry weight, excluding packaging (kg) | 124 | 126 | 128 |
| Electrical supply | 230 V / 50 Hz | 230 V / 50 Hz | 230 V / 50 Hz |
Oil combi
Greenstar Heatslave II External
The external Heatslave II provides an oil combi option in a weather-resistant cabinet. It can free space inside your home while supplying heating and hot water. We plan the outdoor base, frost protection, flue position and insulated pipework together. In addition, we check access for future annual servicing.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Max DHW output (kW) | Hot water flow rate | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| Greenstar Heatslave II External 12/18 2022+ | 7 731 600 263 | B A | Oil | Yes | Yes | 18 | 950 x 640 x 770 | 18 | 15 | 151 |
| Greenstar Heatslave II External 18/25 2022+ | 7 731 600 264 | B A | Oil | Yes | Yes | 25 | 950 x 640 x 770 | 25 | 18 | 154 |
| Greenstar Heatslave II External 25/32 2022+ | 7 731 600 265 | B A | Oil | Yes | Yes | 32 | 950 x 640 x 770 | 32 | 22 | 158 |
Oil system boilers
Oil system
Greenstar Danesmoor System Utility
An indoor Danesmoor System Utility works with a separate hot-water cylinder. Its integrated heating components suit a sealed-system arrangement, while the narrow cabinet helps when planning a utility-room installation. First, we calculate your heating demand. Then, we match the boiler output, cylinder capacity and controls to your household.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|
| Greenstar Danesmoor System Utility 12/18 2022+ | 7 731 600 254 | A | Oil | Yes | Yes | 18 | 855 x 370 x 600 | 112 |
| Greenstar Danesmoor System Utility 18/25 2022+ | 7 731 600 255 | A | Oil | Yes | Yes | 25 | 855 x 370 x 600 | 98 |
| Greenstar Danesmoor System Utility 25/32 2022+ | 7 731 600 256 | A | Oil | Yes | Yes | 32 | 855 x 370 x 600 | 102 |
Oil system
Greenstar Danesmoor External System
The Danesmoor External System combines an outdoor oil boiler with a separate cylinder inside your home. This keeps the boiler cabinet outdoors while allowing stored hot water for a busy household. We assess the cylinder, controls and heating circuit, then specify the external base, flue and pipework route.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|
| Greenstar Danesmoor External System 12/18 2022+ | 7 731 600 257 | A | Oil | Yes | Yes | 18 | 950 x 565 x 780 | 119 |
| Greenstar Danesmoor External System 18/25 2022+ | 7 731 600 258 | A | Oil | Yes | Yes | 25 | 950 x 565 x 780 | 121 |
| Greenstar Danesmoor External System 25/32 2022+ | 7 731 600 259 | A | Oil | Yes | Yes | 32 | 950 x 565 x 780 | 115 |
Oil regular boilers
Oil regular
Greenstar Danesmoor Utility
The Danesmoor Utility is a regular oil boiler for a traditional cylinder-based heating layout. Its indoor cabinet suits a utility room or other appropriate service space. We check your pump, valves, controls and any existing tanks before recommending a replacement. Therefore, your quotation covers the whole installation rather than the appliance alone.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|
| Greenstar Danesmoor Utility 12/18 2022+ | 7 731 600 245 | A | Oil | Yes | Yes | 18 | 855 x 370 x 600 | 104 |
| Greenstar Danesmoor Utility 18/25 2022+ | 7 731 600 246 | A | Oil | Yes | Yes | 25 | 855 x 370 x 600 | 108 |
| Greenstar Danesmoor Utility 25/32 2022+ | 7 731 600 247 | A | Oil | Yes | Yes | 32 | 855 x 370 x 600 | 115 |
Oil regular
Worcester Bosch Greenstar Danesmoor External boilers
Choose the regular Danesmoor External when you want the oil boiler outside and a separate cylinder for hot water. It offers an alternative to using valuable indoor floor space. First, we review the existing heating layout. Then, we plan weather protection, service access and the connections to your indoor system.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|
| Greenstar Danesmoor External 12/18 2022+ | 7 731 600 248 | A | Oil | Yes | Yes | 18 | 950 x 565 x 780 | 110 |
| Greenstar Danesmoor External 18/25 2022+ | 7 731 600 249 | A | Oil | Yes | Yes | 25 | 950 x 565 x 780 | 114 |
| Greenstar Danesmoor External 25/32 2022+ | 7 731 600 250 | A | Oil | Yes | Yes | 32 | 950 x 565 x 780 | 124 |
Oil regular
Greenstar Utility Regular
The higher-output Greenstar Utility Regular range serves larger heating demands, with 32/50 and 50/70 model bands. It works with a separate hot-water cylinder and external system components. We assess the property’s heat loss and distribution before specifying this larger appliance. This helps avoid choosing an oversized boiler for a smaller home.
Compare model specifications
| Model | Part number | ErP Efficiency Rating | Fuel Type | EasyControl Compatible | Solar Compatible | Central heating output (kW) | Dimensions (mm) height x width x depth | Lift weight (kg) |
|---|---|---|---|---|---|---|---|---|
| Greenstar Utility 32/50 2022+ | 7 731 600 266 | A | Oil | Yes | Yes | 50 | 1,098 x 598 x 795 | 215 |
| Greenstar Utility 50/70 2022+ | 7 731 600 267 | A | Oil | Yes | Yes | 70 | 1,098 x 598 x 795 | 220 |
These tables retain the manufacturer’s model names, units and published figures. Hot-water performance depends on the stated test conditions and the water supply to your home. We explain those figures during your survey and match the boiler to your heating and hot-water needs.
Which Worcester Bosch oil boilers suit your home?
Start with the way your household uses heating and hot water. For example, a compact oil combi may suit a home where you want to remove a separate cylinder. A system or regular boiler may suit an existing cylinder-based arrangement or a household that needs stored hot water.
Next, we calculate the heating demand and assess your radiators or underfloor heating. Choosing the largest output is rarely a useful shortcut. Instead, we explain the boiler size, installation work and controls together, so your replacement is planned around the property.
Also, we review the oil tank, fuel line and existing boiler position. Moving the appliance outside can free space indoors, while a utility-room replacement may keep the installation straightforward. In either case, we allow for safe flue positioning and future service access.
Oil combi boilers
A Heatslave II oil combi provides heating and hot water from one appliance. We check your mains pressure and everyday bathroom use before recommending this arrangement.
Compare oil combi boilers →Oil system boilers
A Danesmoor system boiler works with a separate hot-water cylinder. We assess stored water, recovery and the heating circuit as part of the complete design.
Compare oil system boilers →Oil regular boilers
A regular oil boiler works with a separate cylinder and external system components. We review your pump, valves and controls before planning a replacement.
Compare oil regular boilers →Installing Worcester Bosch oil boilers
Survey and specify
First, we assess the property, heating demand, hot-water use and oil supply. Then, we compare suitable Worcester Bosch oil boilers and explain the installation options clearly.
Plan the full replacement
Next, your quotation covers the chosen boiler, flue, controls and fitting work. We also explain any changes needed to the cylinder, tank connection or heating circuit.
Fit and commission
Our OFTEC registered engineers prepare the heating system, fit the new appliance and complete the commissioning checks. We pay attention to clean pipework, accessible components and a tidy finish.
Register and hand over
Finally, we register the installation, explain your seven-year guarantee and show you how to use the controls. You can also arrange ongoing annual servicing with our local team.
INDEPENDENTLY REVIEWED
Heating work backed by hundreds of five-star reviews
For example, customers repeatedly mention punctual engineers, tidy workmanship and clear advice before, during and after their heating project.
An older-property boiler upgrade finished on time, with tidy workmanship, punctual attendance and a flexible approach.
A last-minute boiler service was arranged quickly and completed efficiently by a team the customer readily recommends.
Review totals checked September 2026. Read the complete independent feedback on Google and Which? Trusted Traders.
Ongoing care for Worcester Bosch oil boilers
After installation, regular servicing helps keep the appliance operating properly. Our oil engineers check combustion, inspect the burner and review the boiler’s condition during a service. If a fault develops, our oil boiler repair service provides support from the same local team.
We also service and repair Worcester Bosch, Grant and many other oil boiler makes. Therefore, your existing appliance does not need to be one that we installed. Visit our oil boiler servicing page to arrange annual care, or compare Grant oil boilers when considering a replacement.
Worcester Bosch oil boilers: your questions
What guarantee do you offer on Worcester Bosch oil boilers?
We offer a seven-year guarantee on our Worcester Bosch oil boiler installations. As Worcester Accredited Installers, we fit the system filter, commission the appliance and register your installation as part of our service.
Can you replace an oil boiler from another manufacturer?
Yes. We replace oil boilers from many makes. First, we inspect the existing heating system, oil supply and flue. Then, we explain suitable Worcester Bosch replacement options and the work needed to fit them.
Should I choose an internal or external oil boiler?
That depends on your space, existing layout and preferred boiler position. An external boiler can free indoor space, while an indoor appliance can suit a utility room. We assess the base, flue and pipework before advising you.
Do I need a cylinder with an oil boiler?
A combi supplies hot water from the appliance. By contrast, system and regular oil boilers work with a separate cylinder. We compare these arrangements with your bathroom use and available water supply.
Do you install Worcester Bosch oil boilers in my area?
Our oil-heating team covers the Oxfordshire locations listed below and nearby villages. Choose your area for its dedicated oil installation page, or call us to discuss your property.
Local installation of Worcester Bosch oil boilers
From Faringdon and Wantage to Abingdon, Oxford, Witney and the surrounding villages, Oxyplumb plans new oil heating for homes across the area. Choose your location below, then explore its oil installation, servicing and repair services.
For wider heating work, explore our central heating services, hot-water cylinders and water-pressure solutions, or all areas we cover. You can also visit our Worcester Bosch Accredited Installer page for more about our accreditation.
Ready to compare Worcester Bosch oil boilers?
Tell us about your current boiler, home and hot-water needs. Then, our OFTEC registered team will explain the options and provide a clear quotation for your new oil boiler.