Joule Invacyl Unvented 300L Indirect Cylinder Standard
Shipping time: 2–7 days
Please call us for precise delivery dates.
Get Free Delivery on Orders Over £60
For more details, please refer to our Shipping Information.
Description
The Joule Invacyl Unvented 300L Indirect Cylinder Standard is a high-capacity, indirect hot water storage cylinder designed for unvented mains-pressure systems. Built for dependable domestic and commercial hot water supply, it stores ~295 L of usable hot water while supporting powerful primary heating via a stainless-steel coil. Suited for utility rooms, plant rooms and larger properties, it delivers stable hot water at mains pressure with low heat loss and a long manufacturer warranty for安心 (peace of mind).
Key Features
- Capacity: 295.3 L actual storage for large hot water demand.
- Indirect coil heating: 316L stainless steel coil rated 17.26 kW with 0.79 m² surface area.
- High build quality: LDX 2101 cylinder material with coated mild steel outer casing.
- Thermal insulation: Dense PU foam for improved energy retention and low heat loss (2.04 kW/24h).
- Unvented mains pressure: Maximum mains water pressure 10 bar, operating pressure 7 bar for strong delivery.
- Safety and testing: Tested to BS EN 12897:2016; safety valve temp 90 °C.
- Immersion heater compatible: 3 kW @ 230 V immersion specification.
- Durability & warranty: 25-year warranty for long-term reliability.
- Low primary resistance: Coil resistance 0.2 bar and max primary pressure 6 bar for efficient circulation.
Ideal Use Cases
- Residential homes with high hot-water demand (large families).
- Commercial buildings and small businesses requiring consistent mains-pressure hot water.
- Heating systems using boilers, heat pumps or solar thermal as primary heat sources.
- Renovation or new-build projects needing an unvented cylinder solution for modern interiors.
- Utility or plant rooms where robust, long-lasting hot water storage is required.
Product Specifications
| Specification | Value |
|---|---|
| Product model | Joule Invacyl Unvented 300L Indirect Cylinder Standard |
| Actual capacity (Ltr) | 295.3 |
| Max mains water pressure (Bar) | 10 |
| Operating pressure (Bar) | 7 |
| Operating temperature (°C) | 60 |
| Safety valve temperature (°C) | 90 |
| Unit weight empty (kg) | 60 |
| Unit weight full (kg) | 355 |
| Cylinder material | LDX 2101 |
| Outer casing | Coated mild steel |
| Thermal insulation | Dense PU foam |
| Foam thickness | 0 |
| Heat loss (kW/24h) | 2.04 |
| Coil material | 316L stainless steel |
| Coil 1 rating (kW) | 17.26 |
| Coil 1 surface area (m²) | 0.79 |
| Coil 1 max primary pressure (Bar) | 6 |
| Coil 1 resistance (Bar) | 0.2 |
| Immersion spec | 3 kW @ 230 V |
| No diving | 1 |
| No heat exchangers | 1 |
| Tested to standard | BS EN 12897:2016 |
| Warranty terms (Year) | 25Y |
Shipping Information
At GetPlumb, we strive to provide reliable and cost-effective delivery options to our customers. Please review our shipping policy below.
🆓 Free Local Delivery (Orders £60 & above)
We offer FREE delivery on orders £60 or more for selected local areas.
Eligible Postcodes Include:
- RG*
- SL*
- OX10*, OX11*, OX49*
- HP1*, HP3*, HP8*, HP9*, HP10*, HP11*, HP12*, HP13*, HP14*
- WD*, HA*, UB*, TW*, KT*
- W1* – W9*
- NW*, SW*
Delivery Time: 2–4 working days
Shipping Cost: £0.00
📦 Standard Shipping (Weight-Based Rates)
For orders that do not qualify for free delivery, standard shipping rates apply based on total cart weight.
- For cart weight between 0–5 kg, the shipping cost is £2.99 with a delivery time of 2–4 working days.
- For cart weight between 5–25 kg, the shipping cost is £7.99 with a delivery time of 2–4 working days.
- For cart weight between 26–40 kg, the shipping cost is £15.98 with a delivery time of 2–4 working days.
- For cart weight of 41 kg and above, the shipping cost is £31.96 with a delivery time of 2–4 working days.
🧱 Block Salt (Harvey’s) – Unit-Based
Shipping
This rate applies only to Harvey’s block salt products.
- £7.99 is charged for every 3 items.
- The charge increases by £7.99 for each additional set of 3 items.
Examples:
- 1–3 items → £7.99
- 4–6 items → £15.98
- 7–9 items → £23.97
Delivery Time: 2–4 working days
📏 Large / Long Items (Length-Based Shipping)
For oversized items where the product length is 1.5 metres or more:
Conditions:
- Product length ≥ 1.5 m
- Cart weight ≤ 40 kg
Shipping Cost: £18.00 (flat rate)
Delivery Time: 2–4 working days
Collection from Store
Customers can also choose to collect their order from our store in
Reading, UK, at no additional charge.
For any questions regarding shipping, please contact our support team at online@getplumb.co.uk.
