The Megaflo Eco Indirect 210L Unvented Hot Water Cylinder is designed for homes with higher hot water demand, including typical 3–4 bedroom properties. With a 210-litre nominal capacity, boiler-heated indirect operation and a high-output internal heat exchanger, it provides stored hot water for busy households with multiple bathrooms and regular simultaneous hot water use.
Constructed with a duplex stainless steel inner tank and 60mm CFC-free polyurethane foam insulation, this Megaflo Eco cylinder combines durable construction with a stated standing heat loss of 1.42 kWh per 24 hours. It features a 3kW backup immersion heater, factory-fitted safety components and an internal floating baffle designed to remove the need for a separate external expansion vessel.
210L Capacity
Indirect Unvented Cylinder
ErP Rating B
76L/min at 3 Bar
30-Year Tank Warranty*
At a Glance
Nominal Capacity
210 Litres
Maximum Stated Flow
76L/min
At 3 bar, as specified
About the Megaflo Eco Indirect 210L Cylinder
The Megaflo Eco Indirect 210L is an unvented hot water cylinder designed to work with a compatible system or heat-only boiler. The boiler heats the stored domestic hot water through the cylinder's internal heat exchanger, while the included immersion heater provides an additional electric heating option when required.
Its 210-litre nominal capacity makes it suitable for households with greater hot water requirements. The supplied performance figures include a maximum flow rate of 76 litres per minute at 3 bar and a 28-minute coil heat-up time under the stated test conditions of 15 litres per minute and an 80°C primary supply. Actual performance depends on incoming mains conditions, boiler output, system design and hot water usage.
The cylinder includes a factory-fitted temperature and pressure relief valve, 3 bar pressure reducing valve, tundish, wiring centre and 2-port motorised valve. Its internal floating baffle is designed to avoid the need for a separate external expansion vessel, according to the supplied product information.
Key Features
1. 210-Litre Hot Water Capacity
Provides substantial stored hot water for larger households, including properties with multiple bathrooms and higher daily demand.
2. High-Output Internal Heat Exchanger
Designed for boiler-heated operation, with a stated 28-minute coil heat-up time under the specified test conditions.
3. Duplex Stainless Steel Construction
The duplex stainless steel inner tank provides a robust construction for domestic hot water storage.
4. 60mm Thermal Insulation
CFC-free polyurethane foam insulation helps retain stored heat. The supplied standing heat loss is 1.42 kWh per 24 hours.
5. Backup 3kW Immersion Heater
Includes one 3kW Superloy 825 immersion heater rated at 240V for an alternative electric heating option.
6. Factory-Fitted Safety Components
Supplied with a temperature and pressure relief valve, 3 bar pressure reducing valve, tundish, wiring centre and 2-port motorised valve.
What's Included?
Megaflo Eco 210L Cylinder
210-litre indirect unvented hot water cylinder with duplex stainless steel inner tank.
3kW Immersion Heater
One Superloy 825 backup immersion heater, rated at 240V.
Factory-Fitted Components
T&P valve, 3 bar PRV, tundish, wiring centre and 2-port motorised valve, as specified.
Important Installation Information
Unvented hot water cylinders must be installed, commissioned and maintained by a suitably qualified professional in accordance with applicable UK Building Regulations and the manufacturer's instructions. Confirm the incoming mains pressure, flow rate, boiler compatibility, safety components, electrical requirements and installation clearances before installation.
Product Specifications
| Product Name |
Megaflo Eco Indirect 210L Unvented Cylinder |
| Product Code |
7817128 |
| Product Type |
Indirect Unvented Hot Water Cylinder |
| Nominal Capacity |
210 litres |
| Height |
1486mm |
| Width × Depth |
579 × 600mm |
| Empty Weight |
43kg |
| Full Weight |
253kg |
| Inner Tank Material |
Duplex stainless steel |
| Insulation |
60mm CFC-free polyurethane foam |
| Standing Heat Loss |
1.42 kWh/24h (59W), as supplied |
| Maximum Flow Rate |
76 litres/minute at 3 bar, as supplied |
| Coil Heat-Up Time |
28 minutes at 15 litres/minute and 80°C primary supply |
| Recovery Time at 70% Draw-Off |
19 minutes, as supplied |
| Backup Immersion Heater |
1 × 3kW Superloy 825 at 240V |
| Operating Pressure |
3 bar (0.3MPa), as supplied |
| Maximum Mains Pressure |
16 bar, as supplied |
| Connections |
22mm compression / ¾-inch BSP male, as supplied |
| Expansion Arrangement |
Internal floating baffle; no external expansion vessel required, as specified |
| ErP Energy Rating |
B |
| Approval |
Kiwa approved, as supplied |
| Manufacturing Origin |
Made in the UK, as supplied |
| Inner Tank Warranty |
30 years, subject to manufacturer's terms and conditions |
Who Is This Product Suitable For?
- Three- to four-bedroom homes with higher hot water demand.
- Properties with multiple bathrooms or frequent simultaneous hot water use.
- Homes with a compatible system or heat-only boiler.
- Homeowners replacing an existing indirect unvented hot water cylinder.
- Installers specifying a 210-litre cylinder with factory-fitted safety and control components.
Frequently Asked Questions
1. What is the capacity of the Megaflo Eco Indirect cylinder?
The cylinder has a nominal capacity of 210 litres, making it an option for households with higher hot water requirements.
2. Which boilers can heat this cylinder?
It is designed for use with a compatible system or heat-only boiler through its internal heat exchanger. Check the boiler output and system design with a qualified installer.
3. Does the cylinder include an immersion heater?
Yes. The supplied specifications list one 3kW Superloy 825 immersion heater rated at 240V.
4. How quickly does it heat up?
The supplied coil heat-up figure is 28 minutes under the stated test conditions of 15 litres per minute and an 80°C primary supply. Actual heat-up times vary with system conditions.
5. What is the ErP energy rating?
The supplied product information gives this model an ErP energy rating of B.
6. What warranty is included?
The supplied details state a 30-year inner tank warranty. Refer to the manufacturer's warranty documentation for the full terms, conditions and exclusions.
Order the Megaflo Eco Indirect 210L
Choose a 210-litre boiler-heated unvented cylinder with duplex stainless steel construction, 60mm insulation and factory-fitted safety components for a suitable domestic hot water system.
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