Siemens HM678G4S6B Built In Single Oven Electric - Stainless Steel
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Siemens HM678G4S6B

Built In Single Oven Electric - Stainless Steel

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2 Year Warranty
With its integral microwave, this built-in oven by Siemens will give you the power of oven heating coupled with the speed of microwave technology. ActiveClean (pyrolytic self-cleaning) technology ensures the oven will clean itself, while the 4D hotair technology promises even heat distribution across 4 cooking levels (simultaneously!). The central rotary control dial offers effortless oven control, while the large TFT multi-colour display offers clearly legible cooking information in high-resolution.
Product Code HM678G4S6B Alt Codes

EAN: Stainless Steel - 4242003769430

ColourStainless Steel
Electrical RequirementsHardwired (Cable Included)
Primary Oven Size67 litres
Integration TypeBuilt-In
Warranty2 Years
Weight49.7 kg
DimensionsW: 595mm x H: 595mm x D: 548mm
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Siemens Iq700 Multifunction Single Oven With Microwave

Key Information


Additional Heating Methods With Microwave

  • Combi Microwave Variable


Performance/Technical Information

  • Fuse Rating: 16amp
  • Heat Source: Electrical
  • Length Of Mains Cable: 120cm
  • Maximum Door Temperature 30°C
  • Temperature Range 30°C - 300°C
  • Total Connected Load Electric: 3.65kw

Standard Accessories

Cooking at a high level can be that easy. Discover a great choice of delicious recipes in your Home Connect App. Once you have picked your favourite one, you can transfer the ideal settings directly to your oven and even remotely start the heating process. Enjoy convenient cooking, and most importantly: delicious meals.

Remote Control
Let your oven provide you with more freedom and flexibility. Thanks to Home Connect, you can start and end cooking programs and change the cooking settings intuitively via Home Connect App – without having to be in the kitchen.

Remote Diagnostics
In case there is any problem with your oven, Home Connect offers the convenient possibility of remotely diagnosing it. With your permission the Siemens customer support accesses the appliance online to detect the source of error. If the malfunction can’t be solved right away and a personal visit from our customer service is necessary, the professional Siemens technician will arrive perfectly prepared and with the required spare parts.

FastPreheat and CoolStart
FastPreheat: The optional FastPreheat function heats the oven especially rapidly – without consuming more energy. Waiting time until your oven is ready is reduced to a minimum. CoolStart: Frozen yet full of flavour. The CoolStart function speeds the cooking of frozen foods - no preheating necessary. That saves time and energy.

4D HotAir
The innovative technology of the fan motor allows ideal heat distribution in the interior of the oven. Your dish therefore always turns out evenly cooked, regardless of which shelf you place it on.

Twice as fast in combination mode: By combining the integrated microwave with the conventional heat types, you can speed up the cooking time if required – and still achieve the usual excellent quality. You can thus use your time more flexibly, as the oven bakes just as fast as you want it to.

Roasting Sensor Plus
With three separate measuring points, the roast thermometer gives you an precise reading of the core temperature of roasts and other foods. Such accurate data lets you determine exactly when the roast is done to perfection, ensuring your meals turn out just the way you want them.

Thanks to the activeClean function, your oven now cleans itself. Simply remove any loose remnants and the oven does the rest: at the touch of a button, all deposits from baking, roasting and grilling are turned to ash at high temperature. Use a damp cloth to wipe up what remains.

TFT TouchDisplay Plus
The new, large TFT display has the best contrast, is in multi-colour with a high resolution and is clearly legible thanks to cleartext. The advanced display options with high-resolution graphics together with the intuitive menu navigation make operating the oven easier than ever before.

The world of technological innovation constantly progresses. Step by step, more appliances become more connected and intelligent. With Wi-Fi-enabled Siemens home appliances and Home Connect, this development finally makes its way into your home. The synergy of Wi-Fi-enabled appliances, intelligent software and an intuitive app offers a wide range of options. While some ease the workload and some open up completely new possibilities, all of them make everyday life as efficient and comfortable as never before. And you can spend more time on the things you like. For a life less ordinary.


We are currently offering FREE delivery on the Siemens HM678G4S6B in about 5 - 7 days


We offer a premium installation service to most South East postcodes. You can check whether we offer an installation service in your area by using the postcode finder on the product page, or by simply adding the item to your online basket and entering your postcode.


We’re able to remove your old like-for-like Single Built In Oven for £20 provided it’s disconnected and ready for collection prior to delivery. We offer this service nationwide.


The Siemens HM678G4S6B comes with a 2 year warranty and, for an additional £138, you can upgrade your standard warranty to 5 years parts and labour cover. To do so simply select the warranty option for the product when you checkout.


Under the Consumer Contracts Regulations 2013, if you buy online or by phone you have the right to cancel your order within 14 days after receipt of the products, without giving a reason.

If you wish to exercise your right of cancellation, you are obliged to retain possession of the goods and take reasonable care of them. To exercise the right to cancel, you must inform us in writing of your decision to cancel your contract by a clear statement, including details of your name, address, phone number and email address (where available ) along with details of the order you wish to cancel.

For more information see our Returns Section

What RDO think

Connected Siemens appliances, intelligent software and the intuitive Home Connect App offer a new world of exciting uses. Ask our in store experts for advice.

Accredited Retailer

RDO are proud to be an accredited retailer of all Siemens appliances.

We are constantly checking prices to make sure we are competitive on all Siemens appliances.
This should be the cheapest price for the Siemens HM678G4S6B anywhere in the UK.
If you have seen it cheaper elsewhere or you are interested in a package deal please call us on 01737 240403 and we will do our very best to beat the price.
Alternatively come and visit our showroom in Reigate to discuss your requirements.

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