10 Best Doorbell Transformers 2025 in the United States

The Newhouse Hardware 3TRAN Tri-Volt Transformer is a versatile and powerful option for anyone looking to upgrade their doorbell system. It offers three different voltage outputs (8vac/10VA, 16vac/10VA, and 24vac/20VA), making it compatible with a wide range of doorbell brands, including Ring and Nest. This flexibility allows it to power both standard doorbells and more advanced video doorbells effectively. Its input of 120-Volt AC and multiple output options provide sufficient power to eliminate issues often caused by older, underpowered transformers.

The transformer's UL certification adds a layer of safety and reliability. It's designed for surface mounting, which can simplify the installation process for many users. Its compact dimensions (2.63 x 2.56 x 2.25 inches) make it suitable for various installation spaces. However, one potential downside is that it's a corded electric device, which may limit placement options.

Another consideration is that while it pairs well with Newhouse Hardware's Two Tone chimes for a complete doorbell system, users who don't need new chimes might find this feature less relevant. The Newhouse Hardware 3TRAN Tri-Volt Transformer is a robust and adaptable choice for ensuring your doorbell system is adequately powered, particularly if you are upgrading from an older transformer.

The Newhouse Hardware 16TR Doorbell Transformer is a solid choice for anyone needing to replace an old transformer for a wired door chime. It boasts a 16V/10VA output, suitable for most standard wired doorbells, ensuring reliable performance. One of its standout features is the straightforward installation process. You can easily mount it to an electrical box using a threaded connector or screw it down and connect the wires, making it a user-friendly option even for those with minimal technical skills.

The transformer is UL Certified, which speaks to its safety and quality, adding an extra layer of reassurance for users concerned about durability and safety. Additionally, it's designed to pair seamlessly with Newhouse Hardware's Two Tone chimes, making it a great upgrade option for those looking to enhance their doorbell system.

However, it's important to note that this transformer is not compatible with Ring Pro and other smart video doorbells. Users seeking compatibility with such devices will need to look for a different model. The Newhouse Hardware 16TR is a dependable and easy-to-install option for standard wired door chimes but falls short for those looking to integrate smart doorbell technology.

The Auspow Doorbell Transformer is a solid choice for anyone looking to power their video doorbells or smart thermostats. With an output of 24V and a VA rating of 40, it is capable of supporting multiple devices, making it a versatile option for homes with various smart technologies. This transformer is compatible with popular doorbell brands like Ring, Nest, and Wyze, which is a significant advantage for users with mixed systems.

One of the strong points of this transformer is its UL-certification, ensuring safety and reliability during use. Installation is straightforward, as it comes with necessary mounting hardware, which can make replacing an older transformer a hassle-free experience, even for those who may not be very tech-savvy.

The transformer’s physical size may be a concern in tight spaces, so measuring the installation area beforehand is advisable. In conclusion, the Auspow Doorbell Transformer is a reliable power supply for those looking to enhance their smart home setup, but users should check compatibility with their existing devices and consider the installation space before purchasing.