10 Best Doorbell Transformer For Video Doorbell 2026 in the United States

The Newhouse Hardware 24V 40VA Doorbell Transformer is a solid choice for powering smart video doorbells like Ring and Nest, as well as wired chimes and other 24V devices such as smart thermostats. Its 40VA power rating means it can handle multiple devices at once, which is great for busy households with several connected gadgets. The 24-volt output is standard for many video doorbells, ensuring good compatibility.

Installation is straightforward—this transformer fits into standard electrical boxes and comes with clear instructions, making it easier for homeowners or electricians to set up. It is also UL certified, which means it meets safety standards and is built to last. The transformer is a wall-mounted unit with compact dimensions, so it fits well in typical electrical enclosures but requires a proper mounting spot.

Designed to replace older models and handle modern smart home power needs reliably, this transformer serves as a dependable upgrade that supports a range of smart devices without fuss. However, if your setup requires less power or different voltage, you should verify compatibility before purchase.

The VIIVRIA AC 24 Volt Transformer is a versatile and highly compatible option for powering various smart devices like Ring doorbells and popular thermostats such as Ecobee and Honeywell. One of its standout features is its long 315-inch cable, which offers flexibility in installation, allowing users to reach outlets that may be further away from their devices. The ease of installation is a major plus, as it eliminates the need for complicated wiring, making it suitable for those who may not be very tech-savvy.

Safety and reliability are also key strengths, as this transformer has received certifications for safe operation, providing peace of mind. Users can benefit from the convenience of a battery backup feature, which solves common issues like low battery alerts without needing to remove the devices for charging.

While the transformer is well-received, some users may find the installation process not as intuitive as advertised, especially if their space or outlet configuration is unconventional. Additionally, being corded limits its portability; it must be used near an electrical outlet. It's important to verify if your specific model is included, as compatibility can vary. VIIVRIA offers a good customer service experience along with a 180-day money-back guarantee, which adds an extra layer of trust for consumers.

The BOJACK 24V 40VA Thermostat and Doorbell Transformer is a versatile power supply designed to replace underpowered transformers. It provides an output of 24 volts and 40 volt-amps (VA), making it suitable for a variety of devices, including Nest, Ecobee, Honeywell, and Sensi smart thermostats, as well as Ring and Nest video doorbells. This compatibility is a significant strength, as it ensures that users with multiple devices can rely on one transformer for their power needs.

The transformer is UL-certified, indicating a level of safety and reliability in its performance. Users will appreciate the easy installation process, which involves screw-down and thread clamps that attach to an electrical box, making it accessible even for those who may not be experienced with electrical work. Additionally, the transformer is designed to be mounted on surfaces, which can simplify placement in various settings. However, keep in mind that it is a corded electric device, so access to a power outlet is necessary.

The product is lauded for its durability, though the actual longevity can vary based on individual usage and environmental conditions. Its dimensions (3.1 x 2.3 x 4.8 inches) and relatively light weight (1.68 pounds) make it a manageable size for most installations. The BOJACK transformer is a robust and reliable option for powering both thermostats and video doorbells, though users should ensure their specific power requirements align with its 24V/40VA output.