This is the most consequential decision in a high-end project and it gets made the most casually. People spend four months choosing speakers and ten minutes choosing the platform that will run the house for the next decade.
All four of these work. All four will dim your lights, close your shades, play music in seven rooms and put a nice app on your phone. If you are comparing them on features you will find yourself reading four lists that say roughly the same thing.
The differences that matter don’t show up in week one. They show up in year three, when something breaks, or the company changes its terms, or you want a different integrator. Here’s what to actually look at.
First: two of these are products and two are environments
This distinction explains most of the rest.
Control4 and Savant are productized systems. The hardware, the software and the app are designed to go together, and the installer configures rather than writes. That makes them fast to deploy, consistent, and — this matters more than it sounds — straightforward for a different company to take over later.
Crestron started as a programming environment and still is one underneath. Its SIMPL environment will do essentially anything, which is why it runs stadiums and trading floors as well as houses. Crestron has since added Crestron Home OS, a configuration-driven layer for normal residential work, and the company’s own stated position is that you combine them rather than pick: Crestron describes using Home OS for lighting and shading while keeping SIMPL for custom logic.
RTI sits closer to the environment end — systems are built by the integrator in Integration Designer, the current generation of which added a built-in Driver Store and integrated System Manager.
Neither model is better. But they fail differently, and that’s the part to understand before you sign.
The question almost nobody asks: who can service this in five years?
This is the most expensive question on the page.
On a configuration-based platform, your system is a settings file. If your integrator stops returning calls, goes out of business, or you simply want someone else, another company on that platform can open it and keep going. There will be a learning curve. There will not be a rebuild.
On a heavily custom-programmed system, your house runs on code somebody wrote. If that code is well documented and you have the source file, a competent programmer can pick it up. If you don’t have the source file, the honest answer is that significant parts may need rewriting, and you will pay for that twice — once to the person who wrote it and once to the person who replaces it.
So if you go the custom route, get a copy of your source code and project files in writing, as part of the contract. Not a promise that it exists somewhere. A copy, handed to you, stored where you can find it. This is the single most useful sentence in this article and the one your integrator is least likely to volunteer.
We get called into houses where the original programmer is unreachable and the project file went with them. It’s the most avoidable expensive problem in this industry.
Where the licence lives, and what happens if you stop paying
The whole category has moved toward recurring software fees. This is not a scandal and it is not unique to one brand — but “I bought the system” no longer tells you the whole story, and you should know exactly what you’re buying.
Savant moved the operating licence off the hardware and into the cloud when it introduced Savant Essentials, reported at the time as a shift of the operating licence from the hardware to the cloud. The upside is real: cloud backup of your settings means personalisation survives a hardware swap. Savant OS 12 is arriving this autumn to unify the software into a single platform, and the company has shown an AI assistant it plans to sell as a subscription.
Control4 replaced its long-running 4Sight subscription with Connect. Per Snap One’s own documentation, 4Sight is available for systems installed before 23 April 2024, and Connect is the service for systems installed after. Trade coverage at the time reported the service becoming effectively mandatory on new installs, along with integrator unease about a manufacturer gaining a direct line to their clients.
Crestron has historically licensed per-system rather than per-month for residential control, with cloud management as a separate thing you opt into. RTI offers RTiQ cloud monitoring, which alerts the integrator by email or text when something fails.
On RTI’s and Crestron’s current terms I’m going to do something unusual and tell you I don’t know: neither company publishes residential licensing terms in a form I’d be willing to quote to you as fact. Ask directly, get the answer in writing, and be suspicious of anyone — including us — who states it confidently without showing you the document.
The case study: what happened on 4 August 2026
If you want to know why the licence question matters, this is the example.
Snap One retired remote access and cloud services for Control4 systems still running OS2, with the cutoff published in advance for 4 August 2026, and auto-renewals for those subscriptions switched off from August 2025. Owners who wanted to keep cloud features had to move to OS3 or X4 and onto Connect.
Read that carefully, because the detail matters in both directions. The keypads on the wall kept working. The lights still dimmed, the shades still moved. What stopped was the phone app from outside the house. That is a real loss of function on a system somebody paid for — and it is also not the system bricking itself, which is what the internet will tell you happened.
That’s the shape of the risk across all four brands: the local hardware tends to keep doing its job, and the cloud-dependent conveniences are what expire. Every platform here has cloud-dependent conveniences now. Ask which features on your system need the internet and a live subscription, and which ones don’t. Any competent integrator can answer that in two minutes.
What each one is genuinely strongest at
Having set the real questions aside, the practical differences:
Crestron is the answer when the job is genuinely complicated — unusual logic, a lot of subsystems, things nobody has integrated before, or scale. Home OS 4 added conditional “if-then, when” automation sequences, and the platform supports distributing processing across multiple processors for redundancy and performance, including isolating lighting and shading on dedicated hardware. On a very large house that redundancy is not a luxury. It’s also the most expensive route and the one most dependent on the quality of the person programming it.
Control4 has the broadest third-party device support and the largest installed base, which cuts two ways: the widest compatibility, and the most likely platform for another company to be able to service. For a house with a lot of mixed equipment, it’s often the pragmatic answer.
Savant is strongest where lighting and energy are central to the project. It bought GE Lighting in 2020 along with a long-term licence to the GE brand, and has pushed into energy with smart panels and home battery storage. If the brief includes a serious lighting design, solar, or battery backup, Savant is the only one of the four that treats those as first-class rather than integrations.
RTI is the value play. Fewer people specify it on luxury projects, which means a smaller pool of companies who can service it in your area — worth weighing against the saving.
The questions to ask, in order
Take these to whoever you’re interviewing. The answers tell you more than any feature comparison.
- Which features on this system need the internet and an active subscription, and which work without them?
- What does the subscription cost, for how long is that price held, and what exactly stops if I cancel?
- Will I receive a copy of the source code and project files? If the answer is anything other than yes, understand that you are buying a system only this company can maintain.
- How many other companies within 50 miles can service this platform?
- What’s your response time, and is there anyone else in the company who knows this project? A one-person shop with excellent work is still a single point of failure on a system your house depends on.
- Show me a system you installed five years ago that’s still running. Everything looks good at handover.
The honest summary
There is no wrong answer among these four and anyone who tells you there’s one correct platform is telling you which one they sell.
What there is, is a wrong process: picking the platform from a brochure, not asking where the licence lives, and not getting your project files. We have replaced more systems ruined by that process than by a bad choice of brand.
Decide the platform last. Decide who’s building it first — because on every one of these four, the integrator matters more than the logo.
We build on all four of these platforms, which means we have no stake in which one you choose — only in the house working. We will tell you which fits the project, and we hand over your project files as a matter of course. See smart home automation or system rescue if you have inherited a system nobody will touch, or request a free consultation.