The Megaflo Eco Indirect 250L Unvented Hot Water Cylinder is a boiler-heated unvented hot water cylinder designed for large 4–5 bedroom homes and high-demand properties. With a 250-litre nominal capacity and a maximum flow rate of 76 litres per minute at 3 bar, it is designed to provide a high-volume domestic hot water supply without requiring shower pumps or water storage tanks.
Heated via a system or heat-only boiler, the Megaflo Eco Indirect 250L features an enlarged surface heat exchanger for fast turnaround between high-volume hot water draws. Its high-grade duplex stainless steel inner vessel, 60mm CFC-free polyurethane foam insulation and internal floating baffle provide a practical high-capacity hot water solution. The cylinder is made in the UK and comes with a 30-year tank warranty.
250L Capacity
Indirect Unvented
76L/min at 3 Bar
30-Year Tank Warranty
Made in the UK
Key Benefits at a Glance
76L/min
Maximum Flow at 3 Bar
Applications & Suitability
-
Large 4–5 bedroom homes requiring high-volume domestic hot water.
-
High-demand properties requiring rapid recovery between hot water draws.
- Domestic hot water systems heated by a system or heat-only boiler.
- Properties requiring high flow rates without the need for shower pumps or water storage tanks.
- Installations requiring a large-capacity indirect unvented hot water cylinder.
Key Specifications
| Product |
Megaflo Eco Indirect 250L |
| Product Code |
7817129 |
| Type |
Indirect Unvented |
| Nominal Capacity |
250 Litres |
| Height |
1738 mm |
| Width × Depth |
579 × 600 mm |
| Weight Empty |
50 kg |
| Weight Full |
300 kg |
| Maximum Flow at 3 Bar |
76 l/min |
| Coil Heat-Up Time |
34 min at 15 l/min, 80°C primary |
| Recovery – 70% Draw-Off |
23 min |
| Standing Heat Loss |
1.61 kWh/24h (67 W) |
| Backup Immersion |
1 × 3kW @ 240V |
| Operating Pressure |
3 bar (0.3 MPa) |
| Maximum Mains Pressure |
16 bar |
| Connections |
22mm compression / ¾" BSP male |
| ERP Energy Class |
C |
| Tank Warranty |
30 Years |
High-Volume Heating & Rapid Recovery
The Megaflo Eco Indirect 250L is heated via a system or heat-only boiler. Its enlarged surface heat exchanger is designed to provide rapid heat transfer and fast turnaround between high-volume domestic hot water draws.
The cylinder provides a stated maximum flow rate of 76 litres per minute at 3 bar. With a specified 34-minute coil heat-up time from cold and a 23-minute recovery time at 70% draw-off, it is designed for properties with demanding hot water requirements.
Construction, Insulation & Expansion System
Duplex Stainless Steel
The inner vessel is constructed from high-grade duplex stainless steel and is covered by a 30-year tank warranty.
60mm Insulation
The cylinder uses 60mm CFC-free polyurethane foam insulation to help reduce standing heat loss.
Internal Floating Baffle
An internal floating baffle is incorporated into the cylinder, eliminating the need for an external expansion vessel.
Backup Immersion
A factory-fitted 3kW backup immersion heater rated at 240V provides an additional heating option.
Factory-Fitted Safety & System Components
The Megaflo Eco Indirect 250L is supplied with a range of factory-fitted components designed to simplify the cylinder installation. These include a T&P valve, 3 bar pressure reducing valve, tundish, wiring centre and 2-port motorised valve.
- Factory-fitted T&P valve
- 3 bar pressure reducing valve
- Tundish
- Wiring centre
- 2-port motorised valve
- Internal floating baffle
- 1 × 3kW backup immersion heater
Energy Rating & Approvals
The Megaflo Eco Indirect 250L has an ERP energy rating of C and is Kiwa approved. It is manufactured in the UK and has a stated 30-year tank warranty.
The cylinder has a stated operating pressure of 3 bar (0.3 MPa) and a maximum mains pressure of 16 bar. Its standing heat loss is specified at 1.61 kWh/24h (67W).
Ideal For
-
Large 4–5 bedroom homes requiring high-volume domestic hot water.
-
High-demand properties with frequent or high-volume hot water draws.
- Homes requiring a high-flow hot water supply of up to 76 l/min at 3 bar.
- Properties heated by a system or heat-only boiler.
- Installations where shower pumps or separate hot water storage tanks are not required.
Frequently Asked Questions
What is the capacity of the Megaflo Eco Indirect 250L?
The cylinder has a 250-litre nominal capacity and is designed for large homes and high-demand properties.
What type of boiler heats the Megaflo Eco Indirect 250L?
The cylinder is designed to be heated by a system or heat-only boiler.
What flow rate does the Megaflo Eco 250L provide?
The stated maximum flow rate is 76 litres per minute at 3 bar.
Does the cylinder require an external expansion vessel?
No. The cylinder uses an internal floating baffle, meaning an external expansion vessel is not required according to the supplied product information.
What backup immersion heater is included?
The cylinder includes 1 × 3kW backup immersion heater rated at 240V.
What is the warranty on the Megaflo Eco 250L?
The cylinder has a stated 30-year tank warranty.
What is the product code?
The product code for the Megaflo Eco Indirect 250L is 7817129.
Megaflo Eco Indirect 250L – High-Volume Unvented Hot Water
The Megaflo Eco Indirect 250L combines 250-litre storage, a high-flow rate of up to 76 l/min at 3 bar, enlarged surface heat exchanger, duplex stainless steel construction and 60mm CFC-free insulation. Designed for large 4–5 bedroom homes and high-demand properties, it is heated by a system or heat-only boiler and includes a 3kW backup immersion heater, factory-fitted safety components and an internal floating baffle. Made in the UK, it carries a 30-year tank warranty and Kiwa approval.
