The recurring subscription, not the hardware, is the largest number in a video doorbell purchase. Google's store page for Google Home Premium, the plan formerly sold as Nest Aware, prices the Standard tier at $10 a month or $100 a year for 30 days of event video history and the Advanced tier at $20 a month or $200 a year for 60 days of event history plus 10 days of 24-hour recording. Five years on the Advanced tier is $1,000, several times the price of the doorbell. The condition that changes the answer is the wiring: the same page limits 10-day continuous recording to wired cameras and doorbells, so a battery unit cannot use the feature the higher tier is sold on.
The transformer, not the app, decides whether it installs
Google's technical specifications for its cameras and doorbells state that the Nest Doorbell (wired, 2nd gen) "must be connected to a 16–24VAC, 10-40VA, 50/60Hz doorbell transformer". That is a figure to check in the closet before the doorbell is ordered, because an older chime transformer sized at 10 VA sits at the bottom of the range and a transformer rated in volts alone does not answer the question. The same page gives the rest of the envelope: 960 × 1280 resolution at a 3:4 aspect ratio, up to 30 frames per second, a 145° diagonal field of view, HDR, ten 850 nm infrared LEDs with a night-vision viewing distance up to 10 feet, 802.11a/b/g/n/ac Wi-Fi on 2.4 and 5 GHz, and an operating range of -4 °F to 104 °F (-20 °C to 40 °C). Electrical work on doorbell wiring stays inside what the manufacturer's installation instructions and local code allow.
Bandwidth is the specification people meet last and regret first. The same specifications page recommends at least 2 Mbps of upload speed per camera for full video quality. Upload, not download, is the number on a broadband bill that rarely gets read, and two doorbells plus a camera is 6 Mbps of it.
The subscription carries the ownership cost
Read the tiers as a yearly line item rather than a monthly one. The Google Home Premium page prices Standard at $10 a month or $100 a year, so the monthly route costs $120 and the annual route saves $20; Advanced runs $20 a month or $200 a year, saving $40. Event history is 30 days on Standard and 60 days on Advanced, and the 10 days of 24-hour history on Advanced applies only to wired cameras and wired doorbells. A household comparing two doorbells whose prices differ by $60 is comparing a number smaller than one year of the higher tier.
Video from a doorbell has been an enforcement matter
The Federal Trade Commission announced on May 31, 2023 that Ring would pay $5.8 million over charges that it failed to restrict employee and contractor access to customers' videos and failed to implement security protections, with roughly 55,000 US customers affected by credential stuffing and brute force attacks. The order in that action requires multi-factor authentication for both employee and customer accounts and requires the company to delete customer videos and face embeddings obtained before 2018 along with work products derived from them. The same FTC announcement is the reason two questions belong in the purchase: who at the vendor can view stored video, and whether multi-factor authentication is available on the customer account. Cloud-stored footage is the same class of question that follows a robot vacuum that maps the floor plan, or a dash cam that uploads clips.
Audio is governed by state law, not by a setting
A doorbell records sound as well as pictures, and the sound is where state law bites. California Penal Code section 632 makes it an offense to use an electronic recording device to record a confidential communication "without the consent of all parties", defining a confidential communication as one carried on in circumstances indicating a party desires it to be confined to the parties. The same section sets a fine not exceeding $2,500 per violation for a first offense and not exceeding $10,000 per violation for a subsequent one. Whether a porch conversation qualifies turns on the circumstances, which is exactly why the audio switch and the recording radius are settings to find in the app before the doorbell is mounted, and why state law, not the vendor's default, is the reference.
Example: one wired doorbell's published figures, priced over five years
Take the Nest Doorbell (wired, 2nd gen) at its published specification: 960 × 1280 at up to 30 fps, 145° diagonal, powered from a 16–24 VAC, 10–40 VA transformer, per Google's specifications page. Pair it with the Advanced plan at $200 a year from the Google Home Premium page, because 10 days of 24-hour history is the feature that needs the wired install. Five years of that plan is 5 × $200 = $1,000. Choosing Standard instead is 5 × $100 = $500, and paying monthly on Standard is 5 × $120 = $600, or $100 more than the annual route across the same five years. This is an example of how the published prices compound, not a recommendation.
Before you buy a video doorbell
- The transformer rating on the existing chime, in volts AC and VA, against the 16–24 VAC and 10–40 VA the manufacturer's specification requires.
- The upload speed of the broadband connection in Mbps, against the 2 Mbps per camera the specification recommends.
- The subscription price per year, the days of event history it buys, and whether 24-hour recording is restricted to wired units.
- What the doorbell does with no subscription at all, written down from the vendor's own page rather than assumed.
- Whether multi-factor authentication is offered on the customer account, and the vendor's written statement on employee access to stored video.
- The audio recording setting and the state's consent rule, since California's statute sets fines of $2,500 and $10,000 per violation.
- The operating temperature range in °F on the specification sheet, against the coldest morning at that doorframe.