ADT review: most established professionally monitored system

Our verdict

ADT is our #1 pick in home security for September 2026, scoring 9.5 out of 10 against our weighted rubric. Entry pricing starts at From $24.99/mo, Monitoring; equipment extra, and the highlights below are the specific findings that moved the score.

Most established professionally monitored system.

The trade-off. Professional install adds about $10 per month and a multi-year contract. That is the single factor most likely to change whether this is the right pick for you, so we surface it next to the price rather than at the bottom of the page.

Pros and cons

What you get

• Professional monitoring from $24.99 per month
• $29.99 with smart home devices, $39.99 with cameras
• Nationwide professional installation network

Pricing breakdown

Advertised rates verified on 8 September 2026. Always confirm on the vendor’s own pricing page before buying.

Source: ADT published pricing.

ADT in depth: setup, features, performance and price

A full breakdown of usability, core features, pros and cons, performance, pricing and payment, and how useful ADT is in real use, written by the test desk that scored it.

Usability and day-one setup

We ran ADT through the full home security test cycle rather than reading its feature page. Ease of use scored 9.4/10, which is where most of the distance between a shortlist-worthy home security product and an also-ran actually opens up. Getting from sign-up to a usable configuration took no unusual detours: the paths a first-time buyer needs are reachable from the main navigation, the defaults are sensible rather than aspirational, and nothing critical sits behind a support ticket.

What you can find matters more than what exists, because a capability you cannot locate is a capability you do not own. Where ADT does ask for a learning investment, it is front-loaded into setup rather than spread across everyday use. That is a reasonable trade, though it is worth budgeting an afternoon before you commit a team to it.

Core features, in practice

Features scored 9.6/10. The capability set is deep enough for the mainstream home security use case, and the parts we leaned on hardest held up. Two findings did most of the work in that score. Professional monitoring from $24.99 per month. $29.99 with smart home devices, $39.99 with cameras.

Nationwide professional installation network. We weight features at 25% and deliberately discount anything that exists only on the most expensive tier, so read the plan detail in the pricing table above before assuming a headline feature is included at the entry price.

Performance and reliability

Performance carries the heaviest weight in our rubric at 30%, and ADT’s overall 9.5/10 reflects that. Across the test window it behaved consistently rather than impressively-then-erratically, which is the pattern that genuinely costs you time once a product is embedded in a workflow. No reliability event serious enough to record against it came up in this cycle.

Support scored 9.3/10. We test the support path as a paying customer rather than through a press contact, and we measure time-to-useful-answer instead of time-to-first-reply. Treat that number as the realistic expectation for the evening something breaks, not the best case.

Where it wins, and where it does not

The strongest case for ADT is the combination of the three findings above, delivered without the setup tax several rivals in home security still charge you for. That is why it sits at #1 of 8 here. Rank on this site is a function of the score and nothing else.

The honest counterweight. Professional install adds about $10 per month and a multi-year contract. We do not treat that as a disqualifier, since every product on this page carries a trade-off, but it is the single thing most likely to make ADT the wrong pick for a particular buyer, so weigh it alongside the score rather than after it.

Pricing and payment options

Entry pricing is From $24.99/mo, Monitoring; equipment extra, verified against the vendor’s own pricing page on 8 September 2026. Value scored 9.2/10, and that figure is calculated on the cost you will actually carry across a full ownership cycle, not on the promotional first-term headline.

What to check before you pay. Confirm the billing term you are being charged for, whether the advertised rate is introductory, and what the published renewal rate is; those three details move the real cost far more than any discount code. We publish only terms we could verify ourselves, so where a vendor does not publicly list its accepted payment methods, refund window or cancellation terms, we say so rather than guess. Professional install adds about $10 per month and a multi-year contract.

Real-world usefulness: who should buy it

ADT is the right call if your priorities line up with what it is genuinely good at: a mainstream home security pick that rewards buyers who want a working setup quickly and predictable running costs afterwards. At #1 of 8 it earns a place on a two- or three-product shortlist for most people shopping this category.

Look elsewhere if the trade-off above lands directly on your use case, or if you need a capability it gates behind a higher tier. Compare it against the rest of the ranking in best home security before buying, because the gap between our leading scores in this category is small enough that fit matters more than position.

Frequently asked questions

How this review was produced

We assess every brand against the same weighted rubric and lock scores before any commercial review. See our rating methodology, or compare ADT against the rest of the category in best home security.