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Price range: £995.00 through £1,295.00
Central heating and shower hot water. A practical choice for smaller properties.
The Guival Small.C 12kW is a single-phase electric combi boiler for suitable flats and smaller properties with shower demand. Its instantaneous design provides heating and domestic hot water without an internal storage tank.
Manufactured in Italy. Supported in the UK.
Not sure if this boiler is right for your property? Our technical team can help you check before ordering.
A 12kW single-phase electric combi boiler for suitable smaller properties with a shower, without an internal hot-water storage tank. The Guival Small range gives landlords and homeowners a focused option when the property and daily demand suit the model.
Choose the Small.C where a shower-only hot-water arrangement suits the household. If you need a bath, compare the Guival Small.BPL or a suitable ELEKTRA storage model.
A one- or two-bedroom flat may be a starting point for considering this range, but the heating requirement and actual hot-water use decide suitability. Tell your installer about occupancy, shower flow and any demand at more than one outlet.
Guival Small boilers come with up to 5 years’ warranty, subject to the applicable terms and conditions. Eligibility depends on registration, qualifying installation components and servicing. Read the full warranty terms.
– The manufacturer’s warranty covers the boiler parts for the first 2 years from purchase, subject to the manufacturer’s terms.
– ECBC warranty extends the parts cover and adds the labour cover for up to 5 years from purchase, subject to registration within 30 days and servicing every two years from purchase by an ECBC engineer or authorised installer.
– ECBC cover includes parts and labour for eligible warranty repairs, subject to the applicable terms and exclusions.
The Guival SMALL has been designed to be use by one shower at the time. If you need two showers running simultaneously, check our ELEKTRA Easy BP range with inbuilt storage tank or contact us so we can assess your requirements and advise on a suitable system.
The boiler supports high-temperature radiator and low-temperature underfloor-heating configurations. Your installer sets the appropriate heating configuration and temperatures for the system. Summer mode keeps hot water available with central heating off; Winter mode enables both functions.
Before confirming any boiler, we check suitability so there are no surprises later. Your installer should check the property’s heat loss, hot-water demand, electrical capacity, incoming water conditions and installation space. A bedroom count, radiator count or main fuse rating alone does not confirm suitability. If these checks are complete, choose your required option and add it to your basket. If you are unsure, contact ECBC before ordering.
Choose the boiler on its own if your installer will supply the required supporting components, or select an available protection bundle.
The Essential bundle includes installation fittings, a rotary isolator, ZeroCal+ water treatment and a central heating filter*.
The Complete bundle adds a Honeywell wireless room thermostat.
Check the selected option for the components supplied. Buying a bundle does not, by itself, confirm warranty eligibility.
*Central Heating Filter and thermostat models in the Complete bundle may vary depending on stock.
Buy your boiler online and use your own installer, or contact ECBC about optional installation services.
Installation work depends on the existing heating system, electrical supply and proposed boiler position. For an estimation of what an ECBC Boiler Installation would cost, use our ECBC Installation Estimator tool.
Tip: Always check what your installation quote includes before committing.
– Standard delivery: 3-5 working days. Orders placed after noon on Friday are processed the following Monday.
– Next working day delivery: order before noon, Monday to Thursday. Orders placed before noon on Friday are delivered the following Monday.
– Saturday Delivery: For orders placed on a Friday before noon.
– Free collection from our Windsor HQ, SL4 4QF.
Boilers are delivered on a pallet by a third-party courier using a kerbside service. The driver will contact you one hour before delivery with an estimated arrival time. A tracking link is available on request. The courier’s delivery terms apply.
Electric boilers are not cheaper to run than gas boilers. Your running costs depend on your electricity tariff, the property’s heat loss, insulation, heating schedule and hot-water use. You can try our Running Cost Estimator tool for an estimation based on the real circunstances of your property.
Select your required product option, check the specification and add it to your basket. Contact ECBC first if you need help confirming suitability.
Download the GUIVAL SMALL C use and maintenance manual for the operating instructions, installation information and technical diagrams are located in the “Manuals & Downloads” tab.
Select Boiler only, Essential Protection Bundle or Complete Protection Bundle from the product options above, then add your selection to the basket.
You can use your own installer or contact ECBC about optional installation support or installation services.
| Options | No isolation valves, GUIVAL.C + COMPLETE WARRANTY BUNDLE, GUIVAL.C + ESSENTIAL WARRANTY BUNDLE |
|---|---|
| Bath Suitability | No |
| Boiler Power | 12 kW |
| Electrical Supply | Single Phase |
| Heating Suitability | Radiators, Underfloor Heating |
| Hot Water System | With Internal Cylinder |
| Main Fuse rating | 100A, 80A |
| Shower Suitability | 1 Shower |
| Smart Controls | No |
| Function | Combi: central heating and domestic hot water |
|---|---|
| Rated electrical input | 12 kW |
| Electrical supply | Single phase |
| Power draw: brochure reference | 50 A |
| Modulation | 2-12 kW |
| Domestic hot-water storage | no |
| Appliance dimensions H x W x D | 690 x 450 x 315 mm |
| Appliance weight | 58 kg |
| Packing dimensions H x W x D | 755 x 500 x 390 mm |
| Packed weight | 36 kg |
| Minimum clearances: brochure | 300 mm bottom; verify installation manual |
| Bath filling | no |
| Hot-water flow reference at 38°C | <8 L/min; operating conditions require confirmation |
| Smart Controls | no |
| Supply voltage and frequency | 230-240V, 50Hz; single phase |
| Tank construction | n/a |
| Domestic hot-water tank heater | n/a |
| Heating expansion vessel | 9 litres |
| Heating flow and return connections | 3/4 inch male |
| Domestic cold inlet and hot outlet connections | 1/2 inch male |
| Radiator-mode heating setpoint range | 30-75°C |
| Underfloor-mode heating setpoint range | 30-75°C; installer configuration required |
| Hot-water storage setpoint range | 30-65°C |
| Wi-Fi network | 2.4GHz only |
| Room thermostat integration | ONLY VOLT FREE room thermostats. To wire VOLT LIVE thermostat a RELAY is necessary. Supported with compatible control board and installer configuration |
| Operating modes | Summer: hot water; Winter: heating and hot water. The Guival Small C electric boiler MUST be operate in COMFORT mode. |
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