VAILLANT Ecotec Plus 838

(3 customer reviews)


Experience optimum efficiency and reliability with the VAILLANT Ecotec Plus 838 gas boiler – the perfect choice for your home heating needs.

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The Vaillant Ecotec Plus 838 gas boiler is one of the most popular heating solutions in the UK for a reason. This top-of-the-range boiler has earned a reputation as one of the most reliable, efficient and cost-effective gas boilers on the market.

The Vaillant Ecotec Plus 838 gas boiler has a range of advanced features that help to maximise efficiency and reduce energy costs. The boiler’s innovative heat exchanger uses an advanced, low-energy pump to reduce water consumption and improve heating efficiency. It also has a built-in weather compensation sensor that automatically adjusts the temperature in your home based on the weather outside.

Another key feature of the Vaillant Ecotec Plus 838 gas boiler is its ability to provide hot water on demand. This is thanks to Vaillant’s AquaComfort system that produces hot water at a constant temperature and flow rate, even if demand for hot water increases.

The Vaillant Ecotec Plus 838 gas boiler is available in a range of sizes to suit different homes, with the 31kW version suitable for larger properties. The boiler also comes with a 10-year warranty as standard, demonstrating the manufacturer’s confidence in its reliability.

Installation of the Vaillant Ecotec Plus 838 gas boiler is straightforward and the boiler can be installed in a variety of different locations, including a garage or loft. The boiler is also straightforward to use, with simple controls that make it easy to adjust the temperature and settings according to your needs.

Overall, the Vaillant Ecotec Plus 838 gas boiler is an excellent choice for homeowners looking for a reliable and efficient heating solution. With advanced features to maximise efficiency and reduce energy consumption, and a 10-year warranty as standard, this boiler is a worthwhile investment for any home.

Gas Boilers, 230V, A

VAILLANT Ecotec Plus 838 properties

Product nameEcotec Plus 838
TypeGas Boilers
Water HeaterYes
Energy Class LabelA
Noise Level46.0 dB
Efficiency Level83.3 %
Heating Effect Gas38.0 kW
Weight43.0 kg
Height720.0 mm
Width440.0 mm
Depth406.0 mm

Additional information

Product name

Water Heater

Energy Class Label



Noise Level

Efficiency Level

Heating Effect Gas





3 reviews for VAILLANT Ecotec Plus 838

  1. Leila Patrick

    As a nurse living in Chula Vista, I recently had to replace my old gas boiler and decided to go with the VAILLANT Ecotec Plus 838. After some research, I found that it had good reviews and seemed like a reliable option.

    I installed it with the Yes Water Heater and overall, I’m satisfied with my purchase. It’s been a few months now and I haven’t had any issues with it. The heat output is efficient and keeps my home warm during the colder months.

    However, I wouldn’t necessarily say that this boiler is the best option out there. I’ve had experience with other gas boilers in the past and while this one gets the job done, it doesn’t necessarily stand out from the crowd. Additionally, the price point for this model was a bit higher than some of the other options on the market.

    In terms of delivery, I had some issues with the timing. It took a bit longer than expected to arrive in Chula Vista, which was frustrating as I was without heat for a few weeks. However, the delivery company was helpful in keeping me updated on the status of my order.

    Overall, I’d give the VAILLANT Ecotec Plus 838 a rating of 3 out of 5 stars. It does its job well, but there are other options out there that may be more cost-effective or offer additional features.

  2. Grace

    As a nurse living in Mesa, I recently purchased the VAILLANT Ecotec Plus 838 gas boiler in August. Unfortunately, my experience with this product has been subpar, and I can only give it a 2 out of 5 rating.

    One of the major drawbacks of this boiler is its height. At 720.0mm, it’s quite tall and difficult to fit into certain spaces. Additionally, the noise level is quite high, at 46.0dB, causing a constant and annoying whirring sound in my home.

    In comparison to other popular gas boilers, I would not recommend the VAILLANT Ecotec Plus 838. In fact, I have since replaced it with a different model with much better results and a quieter performance.

    When I first ordered this boiler, I had some difficulties with delivery to Mesa. The company I ordered from had some issues with their shipping process, causing my delivery to be delayed. However, after speaking with customer service and resolving the issue, I did eventually receive the boiler.

    Overall, my experience with the VAILLANT Ecotec Plus 838 gas boiler was not a positive one. If you’re in the market for a new boiler, I would suggest looking elsewhere.

  3. Edward Green

    I recently purchased the VAILLANT Ecotec Plus 838 gas boiler for my home in Pittsburgh and let me tell you, I am beyond impressed. As a retail salesman, I know the importance of getting a quality product that lasts and this boiler definitely fits the bill.

    First off, the 440.0 mm width and 43.0 kg weight of the boiler made it easy for me to install in my home without any hassle. The compact design meant it didn’t take up too much space, which is especially important in my smaller home.

    In terms of performance, the Ecotec Plus 838 is unbeatable. It heats up my entire home quickly and efficiently, even during the colder months. The temperature control is also very precise, which means I never have to worry about any uncomfortable temperature fluctuations.

    But what really sets the Ecotec Plus 838 apart from other popular gas boilers on the market is its reliability. It’s been running flawlessly since I purchased it back in April and I haven’t had a single issue with it. That type of consistent performance is exactly what I was looking for when I decided to invest in a high-quality gas boiler.

    Overall, I would highly recommend the VAILLANT Ecotec Plus 838 to anyone looking for a reliable, efficient and easy-to-use gas boiler for their home. When compared to other popular brands and models, the Ecotec Plus 838 blows them out of the water. If you’re in the market for a new gas boiler, trust me, this one is worth every penny.

    As for the delivery of the Ecotec Plus 838, it arrived on time and in perfect condition. The process was smooth and hassle-free, which made the purchase even more satisfying. I had been doing my research on various gas boilers for a while before deciding on the Ecotec Plus 838 and I’m so glad I made the decision to go with this particular model. It’s been a game-changer for my home and I couldn’t be happier with my purchase.

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How to access VAILLANT Ecotec Plus 838 remotely using Smartphone - API Guide

Did you know that thanks to the API you can deny access to the boiler functions remotely? If you are interested in remote control of vaillant's parameters, e.g. using a tablet, computer or smartphone, we have solutions for you that allow you to access the control rail using the API Rest developed by our specialists. We invite you to read the materials available here.

How to setup VAILLANT Ecotec Plus 838 heating boiler?

If you purchased your VAILLANT Ecotec Plus 838 heating boiler and are wondering how to optimize its operation so that it works ecologically and economically we invite you to read our article about the heating curve.

What is a heating effect of VAILLANT Ecotec Plus 838?

This gas boiler has the power of 38.0 kW. If your house is old-fashioned or lacks insulation, this boiler will be enough for 211 square meters of space. However, if your home is modern and insulated this boiler will be enough for 380 square meters of space. If your house is within this range, check also the other gas boilers in our offer, the power of which is 38.0 kW.