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 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.

The Newhouse Hardware 3TRAN Tri-Volt transformer is a versatile choice for powering video doorbells like Ring, Ring Pro, and Nest Hello, as well as traditional doorbells. It offers three voltage settings (8VAC/10VA, 16VAC/10VA, and 24VAC/20VA), with the highest setting supporting most video doorbells that require more power. This flexibility means it can replace older, weaker transformers that may cause problems with modern smart doorbells. The transformer is UL certified, which adds a layer of safety and reliability.

Installation is straightforward with its surface-mount design and standard corded electric power source. Its compact size should fit easily into most setups. Users should ensure they select the correct voltage setting for their specific doorbell model to avoid compatibility issues. While the transformer is rated at 3 amps, which is sufficient for single doorbell systems, it might not support multiple devices or very high-power setups.

If you plan to upgrade your doorbell and chimes together, pairing this transformer with Newhouse’s chimes can streamline installation. This transformer serves as a solid, dependable option when you need a straightforward power upgrade for your video or traditional doorbell without complicated installation.