Crestron Home manages climate either through Crestron's own Horizon wall thermostats, wired via Cresnet, or by integrating a mechanical contractor's VRF or zoned equipment through a dedicated driver. The current Horizon thermostat (HZ-THSTAT-W) is a Wi-Fi device built for one- and two-stage control of forced air, radiant, heat pump, and fan-coil-unit systems, and it supports up to four remote temperature sensors and two remote humidity sensors per zone. Whichever path a home takes, the bigger risk isn't the hardware — it's agreeing who owns the HVAC-to-automation interface before the mechanical contractor and the integrator are both on site.
Crestron-native thermostat or integrate the mechanical contractor's equipment?
Crestron's current Horizon line (HZ-THSTAT-W) replaces the earlier CHV-THSTATW, which Crestron lists as discontinued; a new installation should specify the current Horizon thermostat rather than the legacy Cresnet unit, since the older model is no longer an active product. Horizon communicates over Wi-Fi rather than the Cresnet bus the earlier thermostat required, and configuration — including radiant-floor setup, system type, and sensor assignment — is done through the 3.5-inch touchscreen on the unit or pushed remotely with Crestron Toolbox's Thermostat Configuration Tool, according to Crestron's HZ-THSTAT-W product page.
Not every house uses a Crestron thermostat at all. Many luxury homes, especially those with VRF systems or a building-management-style mechanical plant, keep the HVAC contractor's own equipment and have the Crestron processor talk to it through a driver instead of swapping in Crestron hardware at every zone. That decision belongs in the design phase, not on a punch list — ask your mechanical contractor and integrator jointly whether the house gets Crestron-native thermostats, a driver into existing equipment, or some mix of both by zone.
How do multi-zone and radiant-floor setups connect?
The Horizon thermostat is built to cover more than a basic forced-air system in one device: its spec sheet lists support for two-stage heat/cool, two-stage heat pump with two auxiliary heat stages, 2-pipe and 4-pipe fan-coil-unit configurations, and radiant floor systems with a setpoint range extending to 110°F, per the same Crestron product listing. For fan-coil-unit projects specifically, Crestron also offers a dedicated 0-10V FCU thermostat (CHV-TSTAT-FCU-PIR-10) built for variable-speed fan, heating, and cooling valve control with a built-in PIR occupancy sensor, suited to multi-dwelling or hotel-style zoning rather than a typical single-family radiant slab.
Radiant floor zones add a wrinkle worth raising with your contractor directly: radiant systems respond slowly compared to forced air, so scene-driven setpoint changes (an Away or Goodnight scene dropping the temperature, for example) won't show results for hours in a slab-heated room. That lag is a property of the mechanical system, not the control platform, and it's worth confirming with your HVAC contractor how far in advance radiant setpoints need to change ahead of an expected occupancy shift.
Why does scope between the HVAC contractor and the integrator matter?
A CEDIA podcast interview with a UK building-management-systems integrator lays out a recurring coordination problem: HVAC/BMS design is typically finalized late in a project, after the mechanical engineer's specification goes out to tender, while the AV and automation scope — including keypads, touchscreens, and the interface the homeowner actually touches — is usually locked much earlier because it's visual and tangible to the client. The guest sets a temperature on a Crestron keypad, and if the technical integration between the HVAC control system and the Crestron interface isn't resolved ahead of time, "what they're expecting to happen afterwards doesn't happen" — the homeowner adjusts a setpoint and the room still feels wrong two hours later, as described in CEDIA's BMS for HVAC podcast.
The practical fix the interview describes is simply moving that conversation earlier: get the mechanical engineer, the HVAC/BMS contractor, and the Crestron integrator comparing notes before budgets and layouts are locked, rather than trying to reconcile two systems' worth of assumptions on site while trim work is underway. For a new build or major renovation, that means putting climate-control architecture on the table at the same meeting where lighting and AV scope gets decided — not as a line item added once the rest of the budget is spent.
Cave Group designs around Crestron for whole-home control, including the climate integration layer that connects to a home's HVAC equipment; see the residential page for how climate control fits into a broader Crestron and Lutron deployment. Homes that already run an older Crestron system and are considering whether Horizon thermostats or driver-based HVAC integration make sense as part of a larger migration may also want to review Cave Group's Crestron 3-Series to 4-Series migration guide.
Frequently asked questions
Can I still install the old Crestron CHV-THSTATW thermostat?
No — Crestron's product catalog lists the CHV-THSTATW as discontinued, so a new installation should use the current Horizon thermostat (HZ-THSTAT-W) instead, which covers the same HVAC system types with a Wi-Fi connection rather than requiring the Cresnet bus the older unit used.
Does a Crestron Horizon thermostat work with radiant floor heat?
Yes. The HZ-THSTAT-W is built to support radiant floor systems directly, with a setpoint range extending to 110°F for that mode, alongside forced-air, heat-pump, and fan-coil-unit configurations.
Will a Crestron scene change my thermostat setpoint instantly?
The thermostat will register the new setpoint immediately, but how quickly the room actually reaches it depends on the mechanical system — radiant floors in particular respond far more slowly than forced air, so ask your HVAC contractor how much lead time a scene-driven setpoint change needs for each zone type.
Who should design the HVAC-to-Crestron interface — the integrator or the mechanical contractor?
Both need to be involved, and early. Industry discussion of this handoff describes recurring problems when HVAC/BMS design is finalized late in a project after the AV scope is already locked, so it's worth getting the mechanical contractor and the Crestron integrator comparing notes at the design stage rather than after rough-in.
Can Crestron integrate with a VRF or multi-zone mechanical system that isn't Crestron's own thermostat?
Many projects keep the HVAC contractor's own zoned or VRF equipment and connect it to Crestron through a driver rather than replacing it with Crestron thermostats at every zone; which approach fits your home is a design question to resolve with both your integrator and mechanical contractor before equipment is ordered.