Round Mechanical Thermostat, 1H/1C Conv. or 1H/1C Heat Pump
Brand: Honeywell
Part#: T87N1000
Honeywell T87N "The Round" mechanical thermostat is a 1 Heat / 1 Cool conventional or single-stage 1H/1C heat pump (without aux. heat) model. Iconic simplicity and reliability make this thermostat a perfect choice where ease of use is a primary requirement. This model is mercury-free, has manual heat/cool changeover lever and implements a battery-assisted power stealing method. Designed for use with gas, oil or electric heating systems w/ an air conditioner or heat pumps without auxiliary heat. Also works for cool-only systems. Note that since this is a mechanical thermostat, it has a 2-3°F accuracy (compared to 1°F in digital models) which is expected.

  • Simple to operate - simply dial the desired temperature
  • No buttons or programming and no battery to change
  • Positive "Off" switch
  • Rugged, time-proven design

Technical Specifications:
  • Programmability: Non-Programmable
  • Stages: 1 Heat / 1 Cool, 1 Heat / 1 Cool Heat Pump (Gas, oil, or electric heat with air conditioning / Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity / Heat only / Heat only with fan / Cool only)
  • Fan Settings: Auto, On
  • Cycles per hour: 1, 3, 5, 9 (adjustable)
  • Changeover: Manual
  • Interface: Mechanical
  • Display: Analog
  • Mounting: Round
  • Color: White
  • Electrical Ratings: 24V (20-30 Vac, 0.02-1.00A)
  • Power Method: Battery-Assisted (built-in) Power Stealing - Hardwired
  • Terminal Designations: R, Rc, W, Y, G, O, B
  • Switch Type: Relay
  • Setting Temperature Range: 40°F - 90°F
  • Ambient conditions: 5 to 90% RH (non-condensing)
  • Dimensions: 4.06" diameter x 1.75" deep
  • Packaged Weight: 6.2 oz

5-year warranty
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