The Megaflo Eco Slimline Indirect 150L is a compact unvented hot water cylinder designed for homes where a standard-width cylinder cannot be accommodated. With a 150 litre nominal capacity, slimline 491mm diameter and boiler-heated indirect design, it provides high-flow domestic hot water with flow rates of up to 70 l/min at 3 bar. A built-in 3kW backup immersion heater provides additional heating capability when required.
150 L Capacity
Slimline 491mm Diameter
Indirect Unvented
Kiwa Approved
Capacity
150 litres nominal
Slimline Diameter
491mm
Maximum Flow
70 l/min at 3 bar
Backup Immersion
1 × 3kW @ 240V
Applications & suitability
Space-Constrained Homes
The 491mm slimline diameter is designed for homes where a standard-width cylinder will not fit.
Boiler-Heated Systems
Designed as an indirect cylinder for heating from a boiler, with a backup immersion heater included.
High-Flow Hot Water
Provides up to 70 l/min at 3 bar for domestic hot water requirements.
Compact Installations
Suitable for installations where a narrow cylinder footprint is an important requirement.
Key specifications
| Product |
Megaflo Eco Slimline Indirect 150L |
| Product Code |
7034089 |
| Nominal Capacity |
150 litres |
| Height |
1622mm |
| Diameter |
491mm |
| Weight Empty / Full |
40 kg / 186 kg |
| Standing Heat Loss |
1.46 kWh/24h |
| Maximum Flow at 3 bar |
70 l/min |
| Heat-Up Time |
27 min (15 l/min, 80°C primary) |
| Backup Immersion |
1 × 3kW @ 240V |
| Operating Pressure |
3 bar |
| Maximum Mains Pressure |
16 bar |
| ERP Rating |
C |
Installation & compatibility
The Megaflo Eco Slimline Indirect 150L is designed for boiler-heated indirect unvented hot water systems. Its internal floating baffle means no external expansion vessel is needed. The cylinder is supplied with a factory-fitted T&P valve, 3 bar PRV, tundish, wiring centre and 2-port motorised valve, helping provide an integrated installation solution.
Design & performance benefits
Slimline Construction
The compact 491mm diameter helps accommodate the cylinder in narrower installation spaces.
50mm Insulation
CFC-free polyurethane foam insulation helps reduce standing heat loss.
High Flow Rate
Delivers up to 70 l/min at 3 bar for strong domestic hot water flow performance.
Backup Heating
A 3kW immersion heater provides an additional electric heating option.
Additional installation features
Integrated Expansion Solution
Internal floating baffle eliminates the need for an external expansion vessel.
Factory-Fitted Components
Includes T&P valve, 3 bar PRV, tundish, wiring centre and 2-port motorised valve.
UK Manufactured
Made in the UK and Kiwa approved, with an ERP rating of C.
Ideal for
The Megaflo Eco Slimline Indirect 150L is ideal for homes with limited installation space, particularly where a standard-width unvented cylinder cannot be accommodated. Its 491mm slimline profile, 150 litre capacity, 70 l/min maximum flow rate, 50mm CFC-free insulation and integrated 3kW backup immersion make it a practical solution for compact boiler-heated hot water systems.
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 £100 & above)
We offer FREE delivery on orders £100 or more
for selected local areas.
Eligible Postcodes Include:
- RG*
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- 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 0–2 kg, the shipping cost is £4.50 with a delivery time of 2–4 working days.
- For cart weight between 2–24 kg, the shipping cost is £9.99 with a delivery time of 2–4 working days.
- For cart weight between 24 kg and above, the shipping cost is £60 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.
