Bosch Tronic 3500 Flat TR3501T 120 DERB — Slim Electric Water Heater, 120 l
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Estimated Delivery:Jul 26 - Jul 30
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Free Shipping & Returns: On all orders over € 100
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Manufacturer information
Manufacturer:
Bosch Thermotechnik GmbH
Sophienstraße 30-32
35576 Wetzlar
Deutschland
Email:
info.thermotechnik@de.bosch.com
Bosch Tronic 3500 Flat TR3501T 120 DERB — Slim Electric Water Heater, 120 l
The Bosch Tronic 3500 Flat TR3501T 120 DERB is a slim electric water heater with a 120-litre tank — developed for tight spaces. At only ~26 cm deep it fits in the kitchen, hallway or bathroom, where a classic cylindrical water heater will not. Electronic display, intelligent thermostat, dry heating element and ErP energy class B.
Key features
| Model | Bosch Tronic 3500 Flat TR3501T 120 DERB |
|---|---|
| Tank capacity | 120 l |
| Heating capacity | 1500 W |
| Design | Slim-flat (~26 cm depth) |
| ErP energy class | B |
| Warranty | 5 years (tank) |
Construction & electronics
| Tank | Glass-enamelled steel |
|---|---|
| Corrosion protection | Magnesium sacrificial anode |
| Heating element | Dry heating element (in a sleeve) |
| Display | Electronic with setpoint display |
| Thermostat | 30–75 °C |
| Operating modes | Normal / Eco (weekly timer) / Frost protection |
| Insulation | High-density polyurethane foam |
| Protection class | IPX4 |
| Max. operating pressure | 8 bar |
| Max. temperature | 75 °C |
Tronic 3500 Flat at a glance
Bosch Tronic 3500 Flat
The slim 26 cm depth is the standout feature — the Bosch Flat range fits where round water heaters will not. Inside: a dry heating element (no limescale build-up on the element), a glass-enamelled steel tank with a magnesium anode and high-density polyurethane foam for ErP class B. Electronic display with eco mode and a weekly timer.
Installation & operation
Vertical wall mounting. Reversible connections bottom-right (DERB = Dry Element Right Bottom). 230 V single-phase power supply. Wall brackets included; depth ~26 cm fits standard wall recesses.
About Bosch Home Comfort
Robert Bosch GmbH was founded in 1886 in Stuttgart. Bosch Home Comfort offers proven German engineering and European reliability for hot water, heating and air conditioning — backed by a manufacturer's warranty.
Frequently asked questions
Why a flat water heater?
The Tronic 3500 Flat is only ~26 cm deep — slim enough for kitchen recesses, hallway cupboards or above the washing machine. Same heating output as a round water heater with 30 % less depth.
Who is the 120 l version for?
The 120 l Tronic 3500 Flat is suitable for 1–4-person households. As a point-of-use supply in the kitchen, 50 l is typical; for a family bathroom, 80 l or 100 l.
What is a “dry heating element”?
A dry heating element sits in a sealed sleeve and never touches the water. The result: no limescale on the element, a longer service life, and the element can be replaced without draining the tank.
How is the tank protected against corrosion?
Glass-enamelled steel tank with a magnesium sacrificial anode. Check the anode every 2–3 years (sooner with hard water) and replace it when worn.
How long is the warranty?
Bosch provides 5 years on the tank and 2 years on the electrical components — with professional installation and anode maintenance.
Shipping cost is based on weight. Just add products to your cart and use the Shipping Calculator to see the shipping price.
We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 14 days of delivery.
Why Jacob Warm?
Discover more in our FAQ
How Long Does It Take to Process an Order?
At Jacob Warm, we understand that timely delivery is crucial for our customers. Once you place an order with us, we strive to process it as quickly and efficiently as possible. Here’s a breakdown of our order processing times:
Order Confirmation:
As soon as you place your order, you will receive an order confirmation email. This email will contain all the details of your purchase and confirm that we have received your order.
Processing Time:
Standard Orders: Typically, it takes 1-2 business days to process standard orders. During this time, our team carefully prepares your items, ensuring they meet our quality standards before they are packed for shipping.
Shipping:
Once your order has been processed, it will be shipped out. You will receive a shipping confirmation email with tracking information so you can monitor your package's journey.
Shipping times vary based on the shipping method selected at checkout and your location. Please refer to our Shipping Information page for more details on delivery times.
Peak Times:
During peak seasons or promotional periods, processing times may be slightly longer due to the higher volume of orders. We recommend placing orders early during these times to ensure timely delivery.
Customer Support:
If you have any questions or need assistance with your order, our customer support team is here to help. Please contact us, and we will be happy to assist you.
Thank you for choosing Jacob Warm. We appreciate your business and look forward to serving you!
Do You Ship Internationally?
Yes, we are delighted to offer international shipping across all of Europe! At Jacob Warm, we are committed to making our products accessible to customers worldwide. Here’s what you need to know about our international shipping process:
Shipping Destinations:
We ship to all countries within Europe, ensuring that our products reach you no matter where you are located on the continent.
Shipping Rates:
Shipping rates vary depending on your location and the weight of your order. You can view the estimated shipping costs at checkout before finalizing your purchase.
Delivery Times:
Delivery times vary based on your specific location and the shipping method chosen. Generally, you can expect your order to arrive within 7-14 business days after it has been processed and shipped.
Please note that during peak seasons or promotional periods, delivery times may be extended due to high order volumes.
Customs and Import Duties:
Orders shipped internationally may be subject to customs fees or import duties. These charges are determined by the destination country and are the responsibility of the customer. We recommend checking with your local customs office for more information on these potential charges.
Tracking Your Order:
Once your order has been shipped, you will receive a shipping confirmation email with tracking information. This allows you to monitor the progress of your shipment and estimate its arrival.
Customer Support:
If you have any questions about international shipping or need assistance with your order, our customer support team is here to help. Please contact us and we will be happy to assist you.
We are excited to bring our products to customers all over Europe and look forward to serving you. Thank you for choosing Jacob Warm!
What is Your Return Policy?
At Jacob Warm, we strive to ensure that our customers are completely satisfied with their purchases. If for any reason you are not happy with your order, we offer a straightforward return policy to make the process as easy as possible:
Eligibility for Returns:
Items must be returned within 14 days of the delivery date.
Products must be in their original condition, unused, and with all original packaging and tags attached.
Return Process:
Request a Return: Contact our customer service team to request a return authorization. Please provide your order number and the reason for the return.
Prepare Your Return: Once your return is authorized, securely pack the items in their original packaging. Include the return authorization form provided by our customer service team.
Ship the Return: Send the package to the return address provided by our customer service team. We recommend using a trackable shipping method to ensure your return is received.
Refunds:
Once we receive and inspect your returned item(s), we will process your refund within 5-7 business days.
Refunds will be issued to the original payment method used for the purchase.
Please note that original shipping charges are non-refundable.
Exchanges:
If you would like to exchange an item for a different size or color, please follow the return process and place a new order for the desired item. This ensures the fastest processing time for exchanges.
Damaged or Defective Items:
If you receive an item that is damaged or defective, please contact us immediately. We will arrange for a replacement or refund at no additional cost to you.
International Returns:
For international returns, please follow the same return process. Note that customers are responsible for return shipping costs and any customs fees or import duties incurred.
Contact Us:
If you have any questions about our return policy or need assistance with a return, our customer support team is here to help.
Thank you for shopping with Jacob Warm. We value your business and are committed to providing you with the best possible shopping experience.
What Are Your Sizing Options?
At Jacob Warm, we offer a diverse range of technical products, including boilers, air conditioners, fireplaces and others. To ensure you select the right product for your needs, we provide detailed sizing information in the descriptions of each product.
Where to Find Sizing Information:
Each product page includes a detailed description with specific dimensions and capacities to help you make an informed decision. Simply click on the product you are interested in to view its full specifications.
For installation purposes, make sure to check the required clearance and installation space for each product.
Need Help Choosing the Right Size?
If you’re unsure which size or model is best for your needs, our customer support team is here to assist you. Contact us for personalized advice and recommendations.
We are committed to providing you with all the information you need to select the perfect product for your home or business. Thank you for choosing Jacob Warm!
