OSO Super Xpress VIP 150L Unvented Direct Hot Water Cylinder Pre-Plumbed
The OSO Super Xpress VIP SX150 is a 150-litre direct electric unvented hot water cylinder with a unique pre-plumbed, pre-wired patented design that conceals all pipework, expansion vessels, valves, and cables under a clean top lid. It is the only direct cylinder with all connections on top — reducing installation time by up to 70% compared to conventional cylinders. Vacuum Insulation Panel (VIP) technology gives the SX the lowest SAP score of any direct electric cylinder, while the twin 3kW INCOTEC immersion heaters provide dual-tariff electric flexibility and deliver up to 20% more usable hot water than comparable cylinders of the same volume.
The OSO Super Xpress VIP achieves the lowest SAP energy score of any direct electric cylinder — a key benefit for housebuilders and developers under Part L of the Building Regulations. The combination of VIP insulation and the ability to downsize the cylinder (due to 20% more usable capacity) further reduces both heat loss and material cost.
OSO's award-winning Vacuum Insulation Panels give the SX150 a standing heat loss of just 47W / 1.13 kWh per day — far below any conventional foam-insulated direct cylinder of the same size. This directly reduces running costs and SAP score.
The SX150 delivers 254 litres of hot water at 40°C delivery temperature (via the blending valve) — approximately 20% more than competitors' 150L cylinders. This allows the use of a smaller cylinder, saving on purchase cost, space, and heat loss simultaneously.
Every connection — cold water in, hot water out, both immersion feeds, the mixing valve, T&P valve, and both expansion vessels — is factory-assembled on top of the cylinder. A fitting template is supplied to speed up pipework preparation. Installers report up to 70% time savings over conventional designs.
Twin 3kW INCOTEC immersion heaters (upper + lower) enable dual tariff operation — the lower element heats the full tank on cheaper off-peak rates, while the upper element provides a rapid top-up boost at any time. Both are compatible with solar PV diverters and smart tariff systems.
Two 6L expansion vessels are factory-fitted inside the top lid — no separate vessel to mount on the wall or pipe in. The flow-through expansion valve minimises pipework to the vessels in accordance with Building Regulations approval, keeping the installation compact.
The 1.3mm stainless steel inner vessel is built to OSO's ULTRAWELD standard — superior weld quality for long-term corrosion resistance in all UK water conditions. Backed by a class-leading 25-year tank warranty.
The SX150 can share a footprint with a washing machine using the optional OSO washing machine frame — a significant space advantage in small utility rooms or kitchen installations where every centimetre counts.
The SX VIP achieves the lowest SAP score of any direct cylinder — a key advantage for housebuilders and developers seeking Building Regulations compliance under Part L. Downsizing the cylinder (enabled by the 20% capacity advantage) further improves the SAP figure.
Must be installed by a G3 registered competent engineer. All work must comply with Building Regulation G3 and Water Regulations. Ensure a minimum 6mm² twin & earth cable is provided for each immersion heater circuit. Do not operate the cylinder empty — fill with water before switching on.
| Specification | Value |
|---|---|
| Product No. | OSO 10 802 662 (SX 150 VIP) |
| Storage Volume | 143 litres |
| Capacity @ 40°C | 254 litres |
| Diameter | 580 mm |
| Height | 1,050 mm |
| Weight Empty | 31 kg |
| Weight Full | 174 kg |
| Immersion Heaters | 3kW upper + 3kW lower INCOTEC / 1 × 240V each |
| Thermostat Set Point | 70°C (adjustable 40–70°C) |
| Standing Heat Loss | 47W / 1.13 kWh/day (EN 12897) |
| ErP Energy Rating | D |
| Heat-up Time ΔT 55°C (upper element) | 174 minutes |
| Recovery Time 70% (upper element) | 52 minutes |
| Expansion Vessels | 2 × 6L factory-fitted |
| T&P Relief Valve | 10 bar / 90–95°C |
| Mixing Valve Set Point | Preset 60°C |
| Tank Warranty | 25 years (stainless steel inner vessel) |
Original: $1,526.48
-65%$1,526.48
$534.27More Images
OSO Super Xpress VIP 150L Unvented Direct Hot Water Cylinder Pre-Plumbed
The OSO Super Xpress VIP SX150 is a 150-litre direct electric unvented hot water cylinder with a unique pre-plumbed, pre-wired patented design that conceals all pipework, expansion vessels, valves, and cables under a clean top lid. It is the only direct cylinder with all connections on top — reducing installation time by up to 70% compared to conventional cylinders. Vacuum Insulation Panel (VIP) technology gives the SX the lowest SAP score of any direct electric cylinder, while the twin 3kW INCOTEC immersion heaters provide dual-tariff electric flexibility and deliver up to 20% more usable hot water than comparable cylinders of the same volume.
The OSO Super Xpress VIP achieves the lowest SAP energy score of any direct electric cylinder — a key benefit for housebuilders and developers under Part L of the Building Regulations. The combination of VIP insulation and the ability to downsize the cylinder (due to 20% more usable capacity) further reduces both heat loss and material cost.
OSO's award-winning Vacuum Insulation Panels give the SX150 a standing heat loss of just 47W / 1.13 kWh per day — far below any conventional foam-insulated direct cylinder of the same size. This directly reduces running costs and SAP score.
The SX150 delivers 254 litres of hot water at 40°C delivery temperature (via the blending valve) — approximately 20% more than competitors' 150L cylinders. This allows the use of a smaller cylinder, saving on purchase cost, space, and heat loss simultaneously.
Every connection — cold water in, hot water out, both immersion feeds, the mixing valve, T&P valve, and both expansion vessels — is factory-assembled on top of the cylinder. A fitting template is supplied to speed up pipework preparation. Installers report up to 70% time savings over conventional designs.
Twin 3kW INCOTEC immersion heaters (upper + lower) enable dual tariff operation — the lower element heats the full tank on cheaper off-peak rates, while the upper element provides a rapid top-up boost at any time. Both are compatible with solar PV diverters and smart tariff systems.
Two 6L expansion vessels are factory-fitted inside the top lid — no separate vessel to mount on the wall or pipe in. The flow-through expansion valve minimises pipework to the vessels in accordance with Building Regulations approval, keeping the installation compact.
The 1.3mm stainless steel inner vessel is built to OSO's ULTRAWELD standard — superior weld quality for long-term corrosion resistance in all UK water conditions. Backed by a class-leading 25-year tank warranty.
The SX150 can share a footprint with a washing machine using the optional OSO washing machine frame — a significant space advantage in small utility rooms or kitchen installations where every centimetre counts.
The SX VIP achieves the lowest SAP score of any direct cylinder — a key advantage for housebuilders and developers seeking Building Regulations compliance under Part L. Downsizing the cylinder (enabled by the 20% capacity advantage) further improves the SAP figure.
Must be installed by a G3 registered competent engineer. All work must comply with Building Regulation G3 and Water Regulations. Ensure a minimum 6mm² twin & earth cable is provided for each immersion heater circuit. Do not operate the cylinder empty — fill with water before switching on.
| Specification | Value |
|---|---|
| Product No. | OSO 10 802 662 (SX 150 VIP) |
| Storage Volume | 143 litres |
| Capacity @ 40°C | 254 litres |
| Diameter | 580 mm |
| Height | 1,050 mm |
| Weight Empty | 31 kg |
| Weight Full | 174 kg |
| Immersion Heaters | 3kW upper + 3kW lower INCOTEC / 1 × 240V each |
| Thermostat Set Point | 70°C (adjustable 40–70°C) |
| Standing Heat Loss | 47W / 1.13 kWh/day (EN 12897) |
| ErP Energy Rating | D |
| Heat-up Time ΔT 55°C (upper element) | 174 minutes |
| Recovery Time 70% (upper element) | 52 minutes |
| Expansion Vessels | 2 × 6L factory-fitted |
| T&P Relief Valve | 10 bar / 90–95°C |
| Mixing Valve Set Point | Preset 60°C |
| Tank Warranty | 25 years (stainless steel inner vessel) |
Product Information
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Description
The OSO Super Xpress VIP SX150 is a 150-litre direct electric unvented hot water cylinder with a unique pre-plumbed, pre-wired patented design that conceals all pipework, expansion vessels, valves, and cables under a clean top lid. It is the only direct cylinder with all connections on top — reducing installation time by up to 70% compared to conventional cylinders. Vacuum Insulation Panel (VIP) technology gives the SX the lowest SAP score of any direct electric cylinder, while the twin 3kW INCOTEC immersion heaters provide dual-tariff electric flexibility and deliver up to 20% more usable hot water than comparable cylinders of the same volume.
The OSO Super Xpress VIP achieves the lowest SAP energy score of any direct electric cylinder — a key benefit for housebuilders and developers under Part L of the Building Regulations. The combination of VIP insulation and the ability to downsize the cylinder (due to 20% more usable capacity) further reduces both heat loss and material cost.
OSO's award-winning Vacuum Insulation Panels give the SX150 a standing heat loss of just 47W / 1.13 kWh per day — far below any conventional foam-insulated direct cylinder of the same size. This directly reduces running costs and SAP score.
The SX150 delivers 254 litres of hot water at 40°C delivery temperature (via the blending valve) — approximately 20% more than competitors' 150L cylinders. This allows the use of a smaller cylinder, saving on purchase cost, space, and heat loss simultaneously.
Every connection — cold water in, hot water out, both immersion feeds, the mixing valve, T&P valve, and both expansion vessels — is factory-assembled on top of the cylinder. A fitting template is supplied to speed up pipework preparation. Installers report up to 70% time savings over conventional designs.
Twin 3kW INCOTEC immersion heaters (upper + lower) enable dual tariff operation — the lower element heats the full tank on cheaper off-peak rates, while the upper element provides a rapid top-up boost at any time. Both are compatible with solar PV diverters and smart tariff systems.
Two 6L expansion vessels are factory-fitted inside the top lid — no separate vessel to mount on the wall or pipe in. The flow-through expansion valve minimises pipework to the vessels in accordance with Building Regulations approval, keeping the installation compact.
The 1.3mm stainless steel inner vessel is built to OSO's ULTRAWELD standard — superior weld quality for long-term corrosion resistance in all UK water conditions. Backed by a class-leading 25-year tank warranty.
The SX150 can share a footprint with a washing machine using the optional OSO washing machine frame — a significant space advantage in small utility rooms or kitchen installations where every centimetre counts.
The SX VIP achieves the lowest SAP score of any direct cylinder — a key advantage for housebuilders and developers seeking Building Regulations compliance under Part L. Downsizing the cylinder (enabled by the 20% capacity advantage) further improves the SAP figure.
Must be installed by a G3 registered competent engineer. All work must comply with Building Regulation G3 and Water Regulations. Ensure a minimum 6mm² twin & earth cable is provided for each immersion heater circuit. Do not operate the cylinder empty — fill with water before switching on.
| Specification | Value |
|---|---|
| Product No. | OSO 10 802 662 (SX 150 VIP) |
| Storage Volume | 143 litres |
| Capacity @ 40°C | 254 litres |
| Diameter | 580 mm |
| Height | 1,050 mm |
| Weight Empty | 31 kg |
| Weight Full | 174 kg |
| Immersion Heaters | 3kW upper + 3kW lower INCOTEC / 1 × 240V each |
| Thermostat Set Point | 70°C (adjustable 40–70°C) |
| Standing Heat Loss | 47W / 1.13 kWh/day (EN 12897) |
| ErP Energy Rating | D |
| Heat-up Time ΔT 55°C (upper element) | 174 minutes |
| Recovery Time 70% (upper element) | 52 minutes |
| Expansion Vessels | 2 × 6L factory-fitted |
| T&P Relief Valve | 10 bar / 90–95°C |
| Mixing Valve Set Point | Preset 60°C |
| Tank Warranty | 25 years (stainless steel inner vessel) |
