Best Door Bell Transformers of 2025

Harry Stack Avatar
Harry Stack
Last Updated: Jan 15, 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Door bell transformers are essential components of any doorbell system. They are responsible for converting the voltage from your home's electrical system to a lower voltage that is safe for the doorbell chime to use. These transformers are typically installed in a junction box near the doorbell chime and are available in a range of sizes and voltage capacities to meet the needs of various doorbell systems. Some doorbell transformers are even equipped with additional features such as thermal protection and circuit breakers to ensure safe and reliable operation. Whether you're installing a new doorbell system or replacing an existing transformer, choosing the right door bell transformer is crucial for proper functionality and safety.

At a Glance: Our Top Picks

Hardwired Transformer for Ring Wired Video Doorbells Cover #TOP 1
Hardwired Transformer for Ring Wired Video Doorbells
ftb score rating icon 9.8
Newhouse Hardware Doorbell Transformer Cover #TOP 2
Newhouse Hardware Doorbell Transformer
ftb score rating icon 9.7
Doorbell Transformer 16V 30VA AC Power Supply Cover #TOP 3
Doorbell Transformer 16V 30VA AC Power Supply
ftb score rating icon 9.5

Top 10 Door Bell Transformers

#TOP 1

Hardwired Transformer for Ring Wired Video Doorbells

8EAGS7-0EN0
Silver
Ecar31
Hardwired Transformer for Ring Wired Video Doorbells Cover
Hardwired Transformer for Ring Wired Video Doorbells

Upgrade your Ring Wired Video Doorbell's performance with the Hardwired Transformer. Easily replace most North American doorbell transformers with the included tools. The transformer provides a 16V 30VA power output, ensuring optimized performance for your Video Doorbell Wired, Video Doorbell Pro, and Video Doorbell Pro 2.

What We Like
Easy installation
Improved performance
Reliable power supply
Compatible with Ring products
Quality construction
What We Don't Like
Transformer runs warm
Slight buzzing from chime
#TOP 2

Newhouse Hardware Doorbell Transformer

16TR
Assorted
1 Pack
Newhouse Hardware Doorbell Transformer Cover
Newhouse Hardware 16TR Doorbell Transformer, wired 16V/10VA, Assorted

Newhouse Hardware Doorbell Transformer is a perfect replacement for your old transformer and can work with any wired door chime. The 120-Volt AC input with 16 VAC/10 VA output is UL certified for safety and quality. The installation is quick and easy by mounting to the electrical box via a threaded connector or screwdown, and then connecting the wires to the door chime. It is also compatible with Newhouse Hardware's Two Tone chimes (CHM1, CHM2, or CHM3D) to complete your upgraded doorbell installation.

What We Like
Easy to install
Works well with various doorbells
Durable and long-lasting
Good voltage output
Convenient mounting options
What We Don't Like
May buzz if overpowered
Higher cost than expected
#TOP 3

Doorbell Transformer 16V 30VA AC Power Supply

16V30VA
Doorbell Transformer 16V 30VA AC Power Supply Cover
Doorbell Transformer 16V 30VA AC Power Supply Thermostat Power Adapter Hardwired Door Chime Transformer

This 16V AC Transformer is a reliable and safe power supply that can replace and upgrade underpowered transformers. It provides ample power to single or multiple thermostats and doorbells in residential, commercial and industrial settings. The transformer is compatible with most brands of doorbells or thermostats and is easy to install with screws, unscrews or threaded clips to the electrical box.

What We Like
Reliable power supply
Easy installation
Sturdy and well-built
Cost-effective option
Compatible with various doorbells
What We Don't Like
Initial setup may be tricky
Color coding differs from original
#TOP 4

24V AC Doorbell Transformer Power Supply

24V40VA
Multicolored
24V AC Doorbell Transformer Power Supply Cover
Doorbell Transformer 24V 40VA AC Power Supply Thermostat Power Adapter Hardwired Door Chime Transformer

Upgrade your underpowered doorbell transformer with this 24V AC Transformer, which provides ample power to single or multiple thermostats and doorbells. This transformer is easy to install and compatible with most brands of doorbells or thermostats, making it an ideal choice for residential, commercial and industrial use.

What We Like
Easy installation
Reliable power supply
Well-built and sturdy
Cost-effective solution
What We Don't Like
Initial confusion with wiring
#TOP 5

Funmit 16V 10VA Doorbell Transformer

Silver
Funmit 16V 10VA Doorbell Transformer Cover
Funmit Doorbell Transformer 16V 10VA Compatible with Ring Wired Video Doorbell

Funmit Doorbell Transformer is an excellent choice for addressing common doorbell issues. With an output of 16V at 10 VA, it efficiently handles noise and non-functioning doorbells. The product is easy to install without any tools, making it convenient for users. Compatible with various video doorbell brands like Ring and Nest Hello, it offers a wide application range. The built-in fuse ensures safety by preventing fire hazards, making it a reliable and eco-friendly option for stable charging connections.

What We Like
Inexpensive price
Easy to install
Compatible with various doorbells
Well-packaged
Fixed doorbell issues
What We Don't Like
No installation instructions
Wiring can be confusing
#TOP 6

Doorbell Transformer for Ring Video Doorbell Pro

Maxdot T57-0052
White
Doorbell Transformer for Ring Video Doorbell Pro Cover
Maxdot Doorbell Transformer 16V 30VA Compatible with Ring Wired Video Doorbell, UL Certification Safe Wired Doorbell 30VA Kit, Easy to Install Door Bell Transformer for Home (1 Pack)

This doorbell transformer is a 16V 30 VA low voltage hardwired door chime transformer that can power single or multiple door chimes in one home. It is easy to install and replace the old under powered doorbell transformer, and it is compatible with many doorbell transformers, including Ring Video Doorbell Pro and Nest Hello Video Doorbell.

What We Like
Easy installation
Compatible with various doorbells
Strong power output
Well-packaged and quality product
UL approved safety
What We Don't Like
May require professional installation
#TOP 7

Heath Zenith Wired Door Chime Transformer

SL-125-02
golden
Heath Zenith Wired Door Chime Transformer Cover
Heath Zenith 8V/16V/24V Transformer - 1 Each

The Heath Zenith SL-125-02 is a low voltage hardwired door chime transformer that offers tri-volt options for clamp-on or panel mount installation. It has a wide input voltage range of 120VAC and output options of 8VAC-10VA, 16VAC-10VA, and 24VAC-20VA. Perfect for powering wired door chimes, this transformer ensures a reliable and high-quality chime sound.

What We Like
Easy installation
Multiple power options
Good build quality
Reliable performance
Clear installation instructions
What We Don't Like
Loud buzzing noise
High temperature when in use
#TOP 8

Auspow Doorbell Transformer 24V 40VA

24v 40va-3
Auspow Doorbell Transformer 24V 40VA Cover
Auspow Doorbell Transformer 24V 40VA for Ring Video Doorbells, Hardwired Door Chime Transformer Power Supply, Compatible with Ring, Nest Hello, Wyze and Eufy Video Doorbells

The Auspow Transformer is a reliable 24V 40VA transformer that is UL-certified, ensuring safe performance. It is universally compatible with various smart thermostats and video doorbells, providing constant 24-volt power for their operation. This transformer is perfect for upgrading underpowered ones, allowing you to power multiple thermostats and doorbells efficiently. Installation is a breeze with screws or threaded clips, making it easy for you to replace your old transformer securely. Additionally, Auspow offers excellent customer service, assuring you of a refund or replacement if the product does not meet your expectations.

What We Like
Works well with video doorbells
Decent build quality and weight
Operates quietly under load
Efficient voltage output
Simple installation process
What We Don't Like
Slightly higher voltage than stated
Some units may fail prematurely
#TOP 9

Auspow Doorbell Transformer

16V 30VA
Auspow Doorbell Transformer Cover
Doorbell Transformer,16V 30VA Comptible with Ring Pro Nest Hello Hardwired Door Chime Transformer-UL Certified

The Auspow Doorbell Transformer is a 16V 30VA power supply that is compatible with various smart video doorbells such as Ring Pro and Nest Hello. With its input voltage of 120V AC 60 Hz and output voltage of 16V 30VA, this hardwired door chime transformer provides sufficient power for up to three doorbell chimes or modern smart video doorbells. By replacing your underpowered transformer with the Auspow Transformer, you can eliminate issues like low chime volume, connection problems, and low-quality video resolution. The installation is easy, and it can be mounted to an electrical box using the threaded connector or screws. This UL certified transformer ensures guaranteed quality and comes with a 30-day money-back guarantee and a 2-year warranty, backed by a professional service team.

What We Like
Easy installation
Inexpensive
High amperage support
Constant voltage output
UL certified
What We Don't Like
Potential safety concerns
Limited return window
#TOP 10

BOJACK 24V 40VA Transformer

BJ-4011-24V
Black
BOJACK 24V 40VA Transformer Cover
BOJACK 24V 40VA Thermostat and Doorbell Transformer, Power Supply Compatible with Nest, Ecobee, Sensi and Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell

BOJACK Transformer is a reliable 24V power supply compatible with various thermostats and doorbells. It replaces underpowered transformers, ensuring optimal performance. With an input of 120 VAC and output of 24 V/ 40 VA, this UL-certified transformer is easy to install using screw-down and thread clamps. It fits Nest, Ecobee, Honeywell, and Sensi smart thermostats, as well as Ring and Nest doorbells. Upgrade to the BOJACK Transformer for seamless operation of your devices.

What We Like
Easy installation
Increased voltage capacity
Reliable performance
Works with smart devices
Fast shipping
What We Don't Like
Requires basic electrical skills
Buying Guide Image

Decide Which Door Bell Transformers Are Best for You

It's almost impossible to see a home without a functional doorbell system around you. The use of doorbells makes it possible for visitors to alert you upon their arrival. However, it's almost impossible to connect some of these doorbells directly to the home circuit system. This is where the use of doorbell transformers becomes necessary. These transformers essentially step down the voltage to a level that is suitable for the doorbell transformer. This guide tells you some of the things you need to know about a typical doorbell transformer.

The need for a doorbell transformer

The transformer plays a vital role in powering the doorbell while it continues to function. Like many appliances within your home, the doorbell has a limit on the voltage it can take. Using the doorbell with a higher voltage could result in partial or permanent damage to the doorbell. The purpose of installing these doorbell transformers is to step down the voltage from the primary circuit.

The connection between doorbell and transformer

As earlier opined, wired doorbells are powered by the electricity coming into the house. However, the voltage of the electricity is reduced via the transformer. A switch inside the doorbell device is often linked to an external terminal; this terminal is directly connected to the doorbell transformer. The transformer is often located in a separate location from the doorbell kits. The transformer steps down the voltage and subsequently transfers power to the doorbell. The chiming unit refers to the unit where the voltage from the transformer is sent to the doorbell. The doorbell chimes are simultaneously connected to the doorbell and the transformer.

Factors to consider before buying a doorbell transformer

  • Transformer Capacity: The transformer must be able to step down the electricity voltage adequately. Each doorbell often comes with its power rating; a transformer that can supply the needed voltage must be prioritized. Also, the transformer must be able to receive the power that's within a specified rating category.
  • Cost: Another important consideration for the purchase of the doorbell transformer is the price at which you're getting it. Transformers come at varying prices, depending on the rating and efficiency. You must select one that fits your bill without necessarily sacrificing efficiency.
  • Ease of installation: There's no point in buying a transformer that will prove difficult to install for users. While transformers require technical knowledge for installation and connection, you must choose one that's easy to connect. It's also essential that you go for one that allows you to fix any issues during use.

Frequently asked questions (FAQs)

Are doorbell transformers usually hidden?

Doorbell transformers can be positioned in any location in the house. However, most people prefer to install it in a neutral room that's not easily accessible.

What transformer rating should I buy?

The ideal transformer for you must be able to power your doorbell easily.

Frequently Asked Questions (FAQs)

1. How do I know if my doorbell transformer is bad?

To determine if your doorbell transformer is bad, measure the voltage it produces. Use a voltmeter and touch each probe to each screw head of the transformer. The voltage should be around 16 volts. If it is too low, it indicates a problem with the transformer, and replacing it will be necessary to fix your doorbell unit.

2. What kind of transformer do I need for a ring doorbell?

For a Ring doorbell, you will need a transformer rated at 16-24 VAC, 50/60Hz, with a maximum power output of 10-40VA for Video Doorbell Pro and 30-40VA for Video Doorbell Pro 2. Make sure to use a transformer that meets these specifications to ensure proper operation of your Ring doorbell.

3. What size transformer do you need for a doorbell?

To power your doorbell, you will need a transformer rated for 16-24 V AC and 10-40 VA. This will provide enough power for your doorbell to function properly. If you notice a blinking yellow light on the front of your doorbell, it indicates insufficient power, and you may need to upgrade to a higher-rated transformer.

4. Does each doorbell have its own transformer?

No, only one transformer is required for your doorbell system, including the doorbell button and chime. This single transformer can support multiple doorbell buttons and chimes, so there is no need for a separate transformer for each doorbell.

5. Can I use a 24V transformer with my ring doorbell?

If you don't have an existing doorbell, you can connect a Ring Doorbell 2 directly to a low voltage transformer rated at 8-24V AC (with a maximum of 40V) at 50/60Hz. This will provide the necessary power for your Ring doorbell to function correctly.

6. Can I use any transformer with a doorbell?

No, you cannot use any transformer with a doorbell. You need a specific type of transformer called a doorbell transformer, which converts line-voltage to low-voltage. Doorbells are low-voltage applications and require a transformer to function properly. So, make sure to use a transformer specifically designed for doorbells.

Editor's Notes

During our door bell transformer research, we found 25 door bell transformer products and shortlisted 10 quality products. We collected and analyzed 76,346 customer reviews through our big data system to write the door bell transformers list. We found that most customers choose door bell transformers with an average price of $18.47.

The door bell transformers are available for purchase. We have researched hundreds of brands and picked the top brands of door bell transformers, including Ring, Newhouse Hardware, GIVEUBED, Funmit, Maxdot. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.

Door Bell Transformers Comparison Table

#TOP1
#TOP2
#TOP3
#TOP4
#TOP5
#TOP6
#TOP7
#TOP8
#TOP9
#TOP10
Brand Ring Newhouse Hardware GIVEUBED GIVEUBED Funmit Maxdot Heath Zenith Auspow Auspow BOJACK
Power Source - Corded Electric AC AC Ac Mains Corded Electric Corded Electric Corded Electric Corded Electric Corded Electric
Maximum Frequency - - 60 Hz - 60 Hz 60 Hz 59.99 GHz 60 Hz 60 Hz 60 Hz
Mounting Type - Wall Mount - Plate Mount Wall Mount - Door Mount - - Surface Mount
Current Rating - - 30 Amps 40 Amps - 1.5 Amps 0.15 Amps 1.8 Amps - -
FTB Score
ftb score rating icon 9.8
ftb score rating icon 9.7
ftb score rating icon 9.5
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 9.1
ftb score rating icon 8.9
ftb score rating icon 8.9
ftb score rating icon 8.7
ftb score rating icon 8.5
Where to Buy