Best Home Security System After Canceling ADT (2026)

Before buying a replacement for ADT, check three things: what you still owe, which equipment you own, and whether a new provider can use any of it. Then compare systems against the features you actually need.

Use the scenarios below to build a shortlist, then request a complete equipment and service quote.

Updated September 23, 2026 · Sources and method

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Match your next system to your situation

I want a monthly service option

→ SimpliSafe or Cove

Compare SimpliSafe and Cove if you want a monthly service option. Read the cancellation and renewal terms: monthly billing is still a subscription, and both brands offer equipment financing. Buying the equipment upfront avoids that separate loan.

I want professional installation again

→ Vivint

Vivint is one professionally installed option. Compare a written equipment list, installation cost, service term and total payments. Its current offers distinguish upfront purchases from financing; do not assume every quote is month-to-month.

I'm in the Amazon ecosystem

→ Ring Alarm

Consider Ring Alarm if you want an alarm alongside Ring cameras. Alarm response and saved camera recordings are separate requirements: check that your selected devices and subscription cover both. Confirm monitoring enrollment before ending ADT service.

I have Z-Wave or HomeKit devices

→ Abode

Check Abode’s Iota or Smart Security Kit against its exact device-compatibility lists. The separate Security Kit does not support HomeKit, Z-Wave or Zigbee. Confirm the hub and service plan before counting on an existing accessory.

I want to compare ongoing costs

→ Cove

Put Cove on your cost shortlist, then compare an itemized quote with the alternatives over the same period. Include equipment, installation, monitoring, camera recording and any financing charges; a low monthly service price is only one part of the bill.

What to know about switching

Check ownership and compatibility separately

Find your panel and sensor model numbers. Read the ownership clause in your agreement and ask the receiving provider which items it can support. Get a written list of reusable devices and required replacements before buying.

Minimize coverage gap

Arrange the new system before ending ADT service. Confirm delivery or installation, permits, activation and any practice period. Test the agreed functions and confirm monitoring is active; an installed keypad alone does not prove response is enabled.

Compare leaving now with waiting

Ask ADT for a dated, itemized cancellation amount and the cost of staying until your chosen end date. Compare both options over the same time period, including replacement costs and any overlap. Track the equipment balance separately and count each payment once.

Frequently asked questions

Will my ADT equipment work with another monitoring company? +
It depends on the exact equipment and receiving provider. Confirm ownership under your agreement, then give the new provider the panel and sensor model numbers. Ask which devices it can use, what must be replaced and what activation or programming costs apply. Ownership alone does not prove compatibility.
Should I wait until my ADT contract expires before switching? +
Compare written costs for leaving now and staying until your chosen date. Include notice-period charges, any termination charge, equipment payments, replacement costs and service overlap over the same period. An initial term ending does not automatically cancel service or clear a separate equipment balance.
How soon after canceling ADT can I activate a new system? +
Timing depends on delivery, installation, permits, enrollment and any practice period. Arrange the replacement first and confirm when its monitoring will be active. Do not treat a shipping estimate or a working local siren as confirmation of professional monitoring.
Can I use SimpliSafe in a home that had ADT installed? +
Yes, you can install a SimpliSafe system in a home previously served by ADT. Build the new system with compatible SimpliSafe components and follow its placement instructions. Do not assume old sensor locations or devices are suitable without checking the new setup.
What if I want professional installation at my next system? +
Request an itemized quote from a professionally installed provider such as Vivint. Compare the specified devices, installation, service term and ongoing charges. If you finance equipment, read that agreement separately and ask what remains due if you cancel monitoring.

Sources and method

Updated September 23, 2026 by SecurityCompassHQ. Based on published terms and support documentation, not hands-on comparative testing. Sources: ADT terms, SimpliSafe terms, SimpliSafe financing, Cove payment options, Vivint financing, Ring plans, and Abode hub compatibility.

Build your replacement plan

The calculator compares the inputs you select. Add any omitted notice charges, equipment payoff, installation, taxes and service overlap separately; do not count a payoff and the same future installments twice.

Not sure whether you've exhausted all your options before this point? See the full post-sign system map: Full after-signing options system — where replacement-shopping fits after ADT cancellation →

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