Siemens 21L 900W IQ700 Built In Microwave | BF634LGS1B | Black

Siemens 21L 900W IQ700 Built In Microwave | BF634LGS1B | Black
Online Only

Lead time applies

Available to order online!


Extended Range Item | Available by Special Order Only

Special Order Item

Delivery expectation: approximately 2-3 weeks, however this time may vary
This item is available by special order only and is not stocked in stores. Purchase online today to secure your product and we will be in contact with delivery estimates. For more information please feel free to contact us using the Ask Us tab.

Lead time applies

The Siemens BF634LGS1B 38cm is high built-in, microwave for energy-saving defrosting, reheating or preparation of dishes in the shortest possible time and frameless microwave for fast defrosting, reheating or preparation of dishes with time-saving high power of up to 900 watts. TFT Display is provide good readability from any perspective. The side-opening hinged door is ideal for elevated installation.

Prouct Features:
  • Product Type: Microwave
  • Color: Stainless Steel
  • Construction Type: Built-in
  • Control Panel: Electronic
  • Capacity: 21 Litres
Microwave Features
Colour Stainless Steel
Width 594 mm
Depth 382 mm
Height 318 mm
Weight 17 kg
Additional Features
  • Auto Weight Cook
  • Clock
  • Interior Light
  • LED Light
  • Reheating
  • Timer
Auto Functions 7
Build Type Built In
Capacity 21 L
Control Type Electronic
Defrost Function Yes
Microwave Type Solo
Cavity Surface Material Stainless Steel
Cooking Methods Grill
Microwave Power
Voltage 220-240 V
Power 900 W
Number of Power Levels 5
Parts Warranty 24 months
Siemens 21L 900W IQ700 Built In Microwave | BF634LGS1B | Black is rated 3.3 out of 5 by 4.
Rated 4 out of 5 by from Stunning looks! Ordered this one as a replacement for an old neff microwave. Fitted in perfectly and looks absolutely stunning outside and inside. There are not many pictures of the inside - the LED is "cool white", there is no rotating plate (presumably the magnetron rotates itself? anyway, the food gets heated evenly and ability to reduce wattage down to 600 is great for warming up meat/fish). It also makes less noise than our previous microwave. The UI is more or less intuitive and the clock with date in stand-by mode further gives it "new-age" look. However, after each power cut, you need to re-set the time and date. Minor design flaws in the UI (the need to push the "on" button before pressing start, the grey background of something that is not selected came across as counter-intuitive, etc.) are slightly unexpected of a top-of-the range product.
Date published: 2016-05-21
Rated 4 out of 5 by from Good looking but pricey Bought this as a replacement, so had to fit in existing niche, which limited choice to only a few models. Bought this one for its appearance, matching other existing units. Well made, but smaller interior than old model despite having large outer dimensions. Can’t fit some cookware in, which did fit in old turntable model. Fitting was straightforward, but required a torx screwdriver. Works well, but hey, it’s a microwave. [This review was collected as part of a promotion.]
Date published: 2018-12-03
Rated 1 out of 5 by from Temperamental and poorly constructed The oven started malfunctioning from day one, with random stoppages and outages during use. We had multiple engineers visit us, and none of them actually fixed the issues. We have now been left with a Microwave that is relatively knew, but always malfunctioning. The microwave came as part of an entire Siemens kitchen fit out, all of which have been fairly dissapointing.
Date published: 2018-07-21
Rated 4 out of 5 by from Classy, reliable, but slightly clunky to use I've had this microwave in my kitchen for around 12 months now, and it's been (so far) perfectly reliable. The door opening procedure is a bit of a gimmick but it looks cool, for want of a better word! It lights up the contents perfectly and it's actually a really good size microwave due to the lack of turntable - you can fit large oval bowls in it and know that the contents will get heated evenly. Whilst it does look attractive, it is a bit unnecessarily complicated to use. It takes a whilst to use the rotary scroller to try and defrost something for 20 minutes, for example, and as other reviewers have commented there should be no need to turn it on after pressing the button to open the door. It is a bit style over substance, but it's not a major complaint. Where it excels is cleaning after use. I've traditionally hated cleaning a microwave, but this turntable-free design is excellent. There is nothing awkward inside to try and scrub dried up food from - every surface in the microwave wipes clean nice and easily. To sum up, this product is flawed, but I like it. In truth it's a ridiculous amount of money to spend on a microwave when you can have one for a tenth of the price, but I'd probably buy it again as it reeks of quality and is wonderfully easy to clean.
Date published: 2019-01-04
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Delivery & Returns
We offer a comprehensive nationwide delivery service; we aim to deliver all orders as quickly as possible.
  • Computers & Electrical – 1 to 5 days on stocked items.
  • Furniture & Bedding – 7 days stock items, Non Stock varies with supplier.


  • If delivery is urgent check with the local store, we are here to assist.
  • 90% of our orders are fulfilled on the next business day.
  • Delivery times for rural areas may vary depending on routes and availability.
Free Pick Up In Store

Can’t wait for delivery or don’t want to pay additional delivery charges? It’s incredibly simple to pick up your online order in store and get your hands on your product quickly and easily. Simply select the pickup in store option and head to your nearest Harvey Norman store to pick up your order.

  1. During checkout, select “Pickup” and select your preferred store.
  2. After your order is placed, you will receive an “order confirmation email” with your “order confirmation number”. 
  3. Once the store has confirmed your order and reserved the stock, you will receive an email “Ready for collection”. (Usually within 24 hours for in stock items)
  4. Bring your "order confirmation number" to the store you selected for pick up, along with photo ID and the credit card you used to make the order.
  5. Speak to one of our staff and your order should be processed in minutes.
Easy returns

If you feel your product has failed a Consumer Guarantee (as defined by Irish Consumer Law) then don't worry you can easily return it to your local Harvey Norman store. We'll even pay for the postage if you live in an area where there is no store. Our returns policy covers any purchased item (conditions apply).

Ask us

You can send us a message to request more information about this product. Just fill in the form below.

Siemens 21L 900W IQ700 Built In Microwave | BF634LGS1B | Black

Product Care

Discover all the benefits Product Care brings you.


With Product Care you can relax knowing your purchase comes with additional protection. Product Care covers all parts, labour and call-out fees for an UNLIMITED amount of repairs. Product Care will only use an authorized repairer network which means the job is done right the first time.

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2, 3 or 4 Year Protection Terms Available

You can choose the length of your Product Care to add additional benefits and protection for your product from the end of the manufacturer’s warranty. Choose from either 2, 3 or 4 years.


New for Old Replacement

If we cannot fix the product. We’ll replace it. LIKE for LIKE, SPEC for SPEC.


Coverage for Wear & Tear & Environmental Factors

Product Care covers wear and tear, defects in materials and workmanship. It also covers breakdowns caused by dust and internal overheating.



If you sell your product, or provide it as a gift to someone, your cover and any unredeemed entitlements can be transferred to the new owner. Simply contact us to arrange transfer of ownership.


International Coverage

Product Care covers your products anywhere in the world for up to €150. It also covers you in any country Harvey Norman operate in. These countries include Australia, New Zealand, Singapore, Slovenia and Croatia.



Our range of support options ensure you experience an easy and hassle free process when you need to talk to us about your Product Care Plan. If you are experiencing a fault, we will provide you with guidance and support every step of the way.

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Friendly Customer Care Team

Call 1800 200 503 to speak with our Ireland based Customer Care team who are available to help you with any enquiries or questions you may have.

Our team are available:
Monday to Friday: 9:00am to 5pm
Closed Weekends and Public Holidays


Easy Online or Phone Claim Process

Making a claim is simple and we are here to help you through every step of the process. Simply:

  1. Register your claim online at www.productcareclaims.ie or
    call our Customer Care team on 1800 200 503.
  2. Have your original purchase receipt handy to register the details of your claim.
  3. Let us take care of the rest.


Having Product Care with your purchase means you can enjoy benefits that are exclusive to you, such as cover for Accidental Damage, that will help you to enjoy the experience of your new product even more.

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Accidental Damage Cover

Product Care covers you for accidental drops, spills, cracked screens and unintentional accidents for 12 months.


Food Spoilage Cover

If your product is a fridge or freezer, Product Care will cover up to €150 for any food spoilage that occurs as a result of a covered fault.


Laundry Cover

If your product is a washer or dryer, Product Care will cover up to €50 for laundry expenses if your product is out of service for more than 10 days from the time you notify us of the fault.


No Lemon Guarantee

If your product costs more than €200 and has had two qualified service repairs and requires a third during the term of the plan, your product will be replaced.


Surge Protection Cover

Product Care offers cover against breakdowns from electrical interference, power surges or voltage fluctuations.

  1. Terms and conditions apply. Please visit product care claims website for more details.
  2. Feature relates to purchases made after 01/03/2011.
  3. For all product care cover enquires please consult www.productcareclaims.ie or call 1800 200 503


*2yr replacement plan commences when the manufacturer’s express warranty over the product finishes.

For More Information Please Visit


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  • Get approved for up to €15,000

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How to Shop Online With Flexi-Fi Finance

  • Shop for the items (not applicable to certain items) you want (minimum €1000).

  • At the checkout, select ‘Checkout with Flexi-Fi’.

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  • Receive approval number by text & email.

  • Complete transaction and the item(s) is yours!

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