Lutron Caséta vs Leviton vs TP-Link Kasa: Which Smart Switch Should You Trust?

Quick answer: For a home that keeps working when the Wi-Fi or internet doesn’t, Lutron Caséta is still the one to beat. It has its own radio, most of its dimmers need no neutral, and it works locally with Home Assistant and Homebridge, and with Hubitat if you use the Smart Hub PRO. Choose Leviton Decora Smart if you want a traditional look: its Z-Wave line if you run Hubitat, or its Wi-Fi/Matter line if you don’t want a hub. TP-Link Kasa is the cheapest, simplest way to add a few switches without a hub. It needs a neutral and runs on your Wi-Fi, so keep it to a handful.

Why I’m comparing these three

These three smart switch brands are on almost every hardware store shelf, and each is built on a different idea. Caséta uses its own radio (Clear Connect RF) and a Lutron hub. Leviton Decora Smart is really several lines: Wi-Fi (Matter built in on the newest models, added by firmware on many 2nd Gen ones), Z-Wave, and a no-neutral Wi-Fi line that needs a bridge. Kasa is Wi-Fi only, needs no hub, and has Matter on its newer models.

I run Caséta at home alongside Hubitat, Homebridge on a Raspberry Pi, and Alexa. For Leviton and Kasa, this comparison is based on manufacturer specs and the Hubitat and Home Assistant integration docs. For my full Caséta take, read my Lutron Caséta review.

Side-by-side comparison

	Lutron Caséta	Leviton Decora Smart	TP-Link Kasa
Radio	Clear Connect RF (not Wi-Fi)	Wi-Fi (2nd Gen and newer Matter models), Z-Wave 800, or no-neutral Wi-Fi via a bridge	2.4 GHz Wi-Fi
Hub needed?	Yes: Lutron Smart Hub or Smart Hub PRO	Wi-Fi: no. Z-Wave: yes (any Z-Wave hub). No-neutral: MLWSB Wi-Fi bridge	No
Neutral wire	Not needed on most dimmers (check the model)	Needed on standard Wi-Fi and Z-Wave models. DN6HD/DN15S are no-neutral but need the bridge	Needed on every current US switch (KS205, KS225, KS230)
Matter	No	Yes: out of the box on newer models (D36HD, D315S), via firmware on many 2nd Gen models	Yes, on Matter models (KS205, KS225)
Hubitat	Built-in Lutron Integrator (Smart Hub PRO or RA2 only)	Z-Wave pairs directly. Wi-Fi models via Matter	Built-in Kasa integration (local, non-Matter models only). Matter models via Matter
Home Assistant	Local push, works with the standard Smart Hub	Z-Wave JS or Matter	Local TP-Link integration or Matter
3-way	Pico remote, no rewiring	Wired companion (Z-Wave) or wire-free Anywhere companion (Wi-Fi)	Dedicated 3-way kit (KS230)
Warranty	1-year limited on most products, per Lutron	2-year limited (per Leviton product pages)	Check your model’s listing
Relative price	Highest per switch, plus the hub	Middle	Lowest

Specs and lineups change. Check the product page for your exact model before you buy.

The neutral wire question decides a lot

Many older switch boxes have no neutral wire, and that rules options out before features even come into it.

• Caséta: most dimmers work without a neutral. That’s the main reason Caséta ends up in older houses.
• Leviton: the regular Wi-Fi and Z-Wave models need a neutral, including the newer Matter D36HD dimmer and D315S switch. The no-neutral Wi-Fi models (DN6HD, DN15S) need the separate MLWSB Wi-Fi bridge (up to 25 devices per bridge), which brings a hub back into a “no hub” line.
• Kasa: the KS205 switch, KS225 dimmer and KS230 3-way kit all require a neutral. TP-Link’s no-neutral Tapo switches are UK/EU-format products, not US ones.

No neutral? Caséta is the simplest answer, and here are the best no-neutral smart switches if you want more options.

Safety note: turn off the breaker first. If you’re not comfortable with household wiring, hire a licensed electrician.

Reliability: dedicated radio vs your Wi-Fi

This is the biggest everyday difference. Caséta switches talk to the Lutron hub on their own frequency, so adding more of them doesn’t touch your Wi-Fi. Leviton Z-Wave gets a similar benefit from its own mesh radio.

Kasa and Leviton Wi-Fi switches each join your 2.4 GHz network as one more device. A few is fine. Dozens of switches on top of phones, TVs, speakers and cameras is where many ISP-supplied and budget routers struggle. Typical symptoms: “not responding” in the app or Alexa while the wall button still works, late automations, and devices that drop off after a router reboot.

If you go Wi-Fi, three habits prevent most of it:

1. Give every switch a DHCP reservation. Hubitat’s Kasa docs recommend it, especially with several Kasa devices, so local integrations can find them after a reboot.
2. Keep a 2.4 GHz network available. All the Kasa models here are 2.4 GHz only. Band steering on some mesh systems causes pairing trouble.
3. Check your router’s client limit before planning a whole-house install.

Local control: how each one connects to Hubitat, Home Assistant and Homebridge

If you’re still choosing a hub, start with Hubitat vs Home Assistant.

Lutron Caséta

Which Lutron hub you buy matters. Lutron now calls them the Smart Hub (L-BDG2-WH, formerly Smart Bridge) and the Smart Hub PRO (L-BDGPRO2-WH, sold for years as the Smart Bridge Pro).

• Hubitat: the built-in Lutron Integrator uses Telnet and supports the Smart Hub PRO (Hubitat’s docs still say “Smart Bridge Pro”) and RA2/RA2 Select main repeaters. The standard Smart Hub is not supported. To set it up, enable Telnet Support in the Lutron app’s integration settings, note the hub’s IP and send yourself the Integration Report to get each device’s Integration ID. Then in Hubitat, add the built-in Lutron Integrator, create a Caséta integration with the hub’s IP, and add each device by type and ID.
• Home Assistant: the official integration lists both the standard Smart Hub (L-BDG2-WH) and the PRO as supported. It runs as local push and exposes Pico buttons as triggers.
• Homebridge: Caséta already supports Apple Home natively. The homebridge-lutron-caseta-leap plugin adds Picos and occupancy sensors, and its README says it’s tested on both Pro and non-Pro hubs. New to Homebridge? See How to Install Homebridge on a Raspberry Pi.

Leviton Decora Smart

• Z-Wave (e.g., ZW6HD): the local-first choice. It’s a Z-Wave 800 Series device that pairs directly to Hubitat’s Z-Wave radio (or to Home Assistant with a Z-Wave stick) and supports S2 security. Check Hubitat’s compatible devices list for your model.
• Wi-Fi: these run through the My Leviton app and cloud unless you use Matter. Newer models (D36HD, D315S, D2710, D2ELV) ship with Matter. Many 2nd Gen models, including the D26HD, D215S, D23LP, D215P, D2MSD and D2SCS, get it by free firmware update through the My Leviton app, then join Hubitat or Home Assistant as Matter devices. HomeKit users must re-add the device afterward. First-gen models won’t get Matter.

TP-Link Kasa

• Hubitat: the built-in Kasa Integration is local only. It finds devices already set up in the Kasa app. It does not support Matter models, which join through Hubitat’s Matter support instead. If discovery fails, enable Third-Party Compatibility in the Kasa app. Hubitat also warns that some firmware updates have blocked local control, so consider turning off automatic firmware updates for switches you control locally.
• Home Assistant: the TP-Link integration is local. Matter is the alternative.
• App note: Kasa is still its own brand, but TP-Link’s Tapo app can now manage Kasa devices too, so you may see setup guides for either app.

Cloud outages, internet outages and power cuts

Internet or vendor cloud down: with all three brands, the button on the wall still works. Caséta’s hub keeps running schedules, Picos keep working, and local Hubitat, Home Assistant and Homebridge control continues. Leviton Z-Wave runs entirely on your hub. Matter control runs over your local network by design, so Matter models on a local controller keep responding. With every brand, anything that goes through a cloud skill or remote app access stops working. That’s the case for connecting switches to a local hub rather than cloud-to-cloud.

Power cut and recovery: this matters anywhere outages are common. When the power returns, Wi-Fi switches have to rejoin a router that’s often the slowest thing in the house to boot. A switch that gave up, or came back with a new IP address, can drop out of automations until you power-cycle it. DHCP reservations help, and so does a small UPS on the router and hub. Check whether your switch lets you set its power-on state, so lights don’t all come on at 3 a.m. Caséta and Z-Wave devices don’t need the router to reach their hub.

Alexa linking

All three work with Alexa. With Caséta, enable the Lutron skill. With Kasa and Leviton Wi-Fi, use their skills, or add Matter models through an Echo that works as a Matter controller. Leviton Z-Wave reaches Alexa through your hub. If everything already lives in Hubitat, you can expose it to Alexa through Hubitat’s built-in Alexa integration, so Alexa sees one consistent set of names.

3-way switches

• Caséta: the easiest. Put the dimmer at one end and a Pico on a wall bracket at the other. The Pico pairs directly to the dimmer, so it works even without the hub. Have an electrician handle the old 3-way wiring correctly.
• Leviton: Z-Wave uses a wired companion (DD00R dimmer companion or DD0SR switch companion). Wi-Fi models can use the battery-powered, wire-free Anywhere companion.
• Kasa: buy the KS230 3-way kit, a matched pair that needs a neutral and isn’t listed as a Matter product. Don’t assume a single KS225 handles 3-way; check its manual.

Who should buy which

• Lutron Caséta: whole-house reliability, older wiring without neutrals, a family that just wants the lights to work. Get the Smart Hub PRO for Hubitat. A standard starter kit with the Smart Hub is enough for Home Assistant or Homebridge.
• Leviton Z-Wave: you run Hubitat or another Z-Wave hub, have neutrals, and like the Decora look (ZW6HD-1RW on leviton.com). Leviton Wi-Fi (Matter): the same look with no hub (D36HD).
• TP-Link Kasa: two to five switches, neutrals, a solid router, lowest cost (KS205 on kasasmart.com). For 3-way, get the KS230 kit.

What I’d buy again

Caséta. It doesn’t depend on Wi-Fi at all. If you run Hubitat, buy the Smart Hub PRO from day one so you don’t have to switch hubs later. For a cheap one-off spot like a closet, I’d consider Kasa, with a DHCP reservation set the same day. I wouldn’t build a whole house on Wi-Fi switches. More in my Lutron Caséta review.

FAQ

Is Lutron Caséta better than Leviton?

For reliability and no-neutral wiring, yes. Leviton wins on traditional looks and Matter, and its Z-Wave line is a strong local option.

Does TP-Link Kasa work without the internet?

Yes, locally. Hubitat and Home Assistant control it on your network, and Matter models stay controllable through a local Matter controller. The Alexa skill and remote access stop working.

Does Lutron Caséta support Matter?

Not as of this writing. Lutron hasn’t added Matter to Caséta. It connects to Alexa, Google Home, Apple Home and local hubs through its own integrations instead.

Do I need the Smart Hub PRO for Hubitat?

For Hubitat’s built-in Lutron integration, yes. Home Assistant and Homebridge work with the standard Smart Hub.

Is there a Kasa switch that doesn’t need a neutral?

Not in the US lineup. Every current US Kasa switch and dimmer lists a neutral as required. Without one, look at Caséta or Leviton’s DN6HD with its bridge.