Heatrae Sadia FBM 70 ECO 3kW Cistern Type Water Heater

Description

The Heatrae Sadia FBM 70 ECO 3kW is a cistern-type vented electric water heater with a 70 litre capacity, designed for commercial and domestic applications where a gravity-fed hot water supply is needed without mains pressure. Being fully vented, it requires no pressure relief valve or external venting — simplifying installation and long-term compliance.

With an integral cold water cistern built into the unit, the FBM 70 ECO replaces the need for a separate loft tank, and includes Heatrae Sadia's intelligent Legionella Control System and fault-reporting electronics for improved commercial hygiene management.

70L

Capacity

3.0kW

Heating Element

80 min

Heat-Up Time

10 minutes at 12L/min

Fill Rate

C

ErP Class

5 Yr

Warranty

Integral Cistern Design

The FBM 70 ECO incorporates its own cold water storage cistern, removing the need for a separate loft tank and simplifying installation in properties without existing hot water storage.

No External Vent or PRV Needed

As a vented water heater, it doesn't require a pressure relief valve or external tundish/discharge pipework — reducing installation complexity versus unvented alternatives.

Intelligent Legionella Control

Built-in Legionella Control System helps protect against harmful waterborne bacteria in commercial and multi-occupancy settings.

Automatic Fault Reporting

Electronic diagnostics provide automatic fault reporting, helping facilities teams identify issues quickly rather than relying on manual inspection.

10 minutes at 12L/min Fill Rate

Rated fill flow of 10 minutes at 12L/min gives a clear benchmark for expected refill performance after draw-off.

ErP Compliant Design

Meets current Eco-Design and Energy Labelling Directives for water heaters, rated Class C for water heating energy efficiency.

Performance
Capacity	70 litres
Heating Element	2.8kW @ 230V / 3.0kW @ 240V
Heat-Up Time	80 minutes
Fill Rate	10 minutes at 12L/min
Efficiency (ErP)
Load Profile	M
Water Heating Energy Efficiency Class	C
Water Heating Energy Efficiency	36.1%
Annual Electricity Consumption	1,423 kWh
Daily Fuel Consumption (Q elec)	6.67 kWh
Heat Loss	1.12 kWh/24h
Pressure & Water Supply
Maximum Inlet Pressure	1 MPa (10 bar / 145 psi)
Minimum Dynamic Supply Pressure	0.5 bar
Type	Direct, cistern-fed (vented)
Construction & Physical
Weight (Empty)	35kg
Weight (Full)	105kg
Dimensions (H x W x D)	1221 x 609 x 276mm
Compliance
Product Code	95040302
Approvals	Kiwa approved (Water & Building Regulations), Nemko approved (electrical safety), CE marked
Warranty	5 years

Does the FBM 70 ECO need a separate cold water tank?

No — it has an integral cistern built in, so a separate loft tank isn't required.

Does it need a pressure relief valve?

No. As a vented water heater it does not require a pressure relief valve or external tundish, unlike unvented alternatives.

How long does the FBM 70 ECO take to heat up?

The manufacturer's rated heat-up time is 80 minutes from cold.

What's the difference between FBM ECO and R Plus?

Both are vented cistern-type heaters from Heatrae Sadia sharing similar footprints, but FBM ECO offers a higher ErP efficiency class and a 5-year warranty, while R Plus is a more budget-focused option with a 2-year warranty and simpler fault reporting via a flashing LED.

Is the Legionella Control System automatic?

Yes, it operates automatically as part of the unit's built-in electronics, requiring no manual intervention from the user.

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