T87N Round Non-Programmable, 1H/1C, Easy to See Mechanical Thermostat, White

Honeywell T87N1026 – Mechanical Round Thermostat, 24V, Non-Programmable

The Honeywell T87N1026 is a non-programmable mechanical thermostat designed for single-stage 24 VAC heating and cooling systems. Known for its round profile and analog interface, this model provides durable, straightforward temperature control with no digital menus or complex programming.

Ideal for applications where manual setpoint adjustment is preferred, the T87N is commonly used in residential and light commercial environments. The thermostat operates using a power-stealing design and requires no batteries, simplifying both installation and long-term operation.

Application Highlights

• System Type: Compatible with 24V single-stage forced air heating, cooling, or combined systems
• Control Type: Mechanical, with bimetallic temperature sensing
• Adjustability: Dial-based control for manual temperature selection
• Mercury-Free: Designed with environmentally responsible switching components

Technical Specifications

• Model Number: T87N1026
• Operating Voltage: 20–30 VAC
• Switch Action: SPST (Heating or Cooling control)
• Temperature Range: 40°F to 90°F (adjustable)
• Mounting: Surface mount, vertical orientation
• Dimensions: 3-3/4 in diameter x 1-1/2 in depth

Installation Considerations

This thermostat is intended for wall mounting in a dry indoor location. Installation requires basic electrical knowledge and standard hand tools. Connections should be made in accordance with local code requirements and manufacturer instructions. For optimal performance and safety, it is recommended that installation be completed by a qualified HVAC technician.

Contractor-Focused Notes

• Dial Interface: Eliminates digital interface concerns in retrofit or rental property applications
• Low Maintenance: No batteries required; minimal service needs after installation
• Standard Base: Compatible with junction boxes and surface mounting plates
• Reliability: Trusted Honeywell design used in legacy and new system installations

Use Case Examples

• Single-zone heating and/or cooling systems
• Multi-unit residential buildings where tamper-proof or manual control is preferred
• Light commercial equipment with 24V control circuits

Included Components

• Mounting hardware
• Wall plate and instructions