We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White rectangular programmable thermostat with push-button controls and clear display

Honeywell

Honeywell T4 Pro 2H/1C Programmable Thermostat TH4210U2002

SKU CH-QA2N-XSZGN

Programmable thermostat with 2 heat/1 cool stages, 7-day or 5-2 scheduling, and standard UWP mounting

  • Product typeProgrammable Thermostats
  • 7-day or flexible scheduling options
  • Simple push-button controls for quick adjustments
  • Universal UWP mounting fits all T Series bases
  • Filter change reminders protect system efficiency
  • Compatible with gas, oil, electric and heat-pump systems

Honeywell T4 Pro 2H/1C Programmable Thermostat

The Honeywell T4 Pro TH4210U2002 is a programmable thermostat designed for residential and light commercial HVAC systems. It supports 7-day, 5-2, 5-1-1 or non-programmable scheduling options. Simple push-button functionality allows for straightforward operation. The device uses the UWP mounting system standard across all T Series thermostats.

Suits gas, oil, electric.

This thermostat suits Standard Efficient Gas Forced Air, High Efficacy Gas Forced Air, Oil Forced Air, Electric Forced Air, Hot water Fan Coil, Geothermal Heat Pump and Air to Air Heat configurations. It provides filter change reminders for maintenance awareness. Buyers needing control for more than two heating stages or one cooling stage should look at a different model. Installers without access to the standard UWP mounting hardware should consider compatibility first.

2H/1C staging defines the equipment match

The single specification that decides fit is the 2H/1C staging capability, meaning two heating stages and one cooling stage. This staging limit determines whether the thermostat can control the specific HVAC equipment installed. Systems requiring three heating stages or two cooling stages cannot use this unit. Verify the equipment staging requirements before purchase.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $116.99
Pricier than about 68% of the 286 comparable items (median $78.49).

Specifications

Product
Product typeProgrammable Thermostats

Questions about this item

What HVAC system types is the Honeywell TH4210U2002 compatible with?

It works with standard and high-efficiency gas forced air, oil forced air, electric forced air, hot water fan coil, geothermal heat pump and air-to-air heat pump systems.

Can the thermostat be installed on an existing T Series wall plate?

Yes, it uses the UWP mounting system standard across all T Series thermostats, so it fits the same wall plate.

How can I confirm the schedule is running correctly after setup?

The display shows the current program period and set temperature; when the system calls for heating or cooling the corresponding mode icon appears.

More in Thermostats & Thermostat Accessories

Similar items