FREE Shipping Over $45*

0% APR 1yr financing with Affirm*
1 10

Aprilaire S86NMU Programmable Multi-Stage Universal Thermostat

SKU: ap14667  |  Model: S86NMU
$8999 $11699

Have a question or need a quote? Ask Our Experts

Live Chat | 1 (800) 934-9194 | Email

Manufacturer's Warranty

5-Year Limited Warranty

What's In The Box?
  • AprilAire S86NMU Thermostat
  • Owner’s Manual
  • Wiring Labels
  • Safety & Installation Instructions
  • (2) Screws
  • (2) Wall Anchors

Info & Guides

Description

Replacing a thermostat on a multi-stage system means finding one that can call every stage your equipment has. The Aprilaire S86NMU Programmable Multi-Stage Universal Thermostat works with conventional heat/cool systems and with heat pumps. Its menu-style navigation and plain-language prompts walk you through installation, so you can have a weekly schedule running within minutes of setup.

After you program it, the S86NMU uses progressive recovery so your home reaches the target temperature just as each scheduled period begins. Heat Blast works alongside your preferred schedule settings, so the warm-up stays on track with the times you've programmed.

Key Features and Benefits of the Aprilaire S86NMU Programmable Multi-Stage Universal Thermostat

  • Multi-Stage Compatibility: Runs up to 2 heating and 2 cooling stages on conventional systems, or up to 4 heating stages on heat pumps, so it fits either system type.
  • 7-Day Programming: Set a separate schedule for each day of the week with 4 time periods per day, so your temperatures follow both weekday and weekend routines.
  • Color Touchscreen: Electronic controls run through a 2.4-inch color graphical display with capacitive touch, so you can read and adjust settings at a glance.
  • Progressive Recovery: This early-start function begins heating or cooling ahead of each programmed period, so your home is already comfortable when the schedule changes.
  • Heat Blast: Raises room temperatures by 3 to 5 degrees F as part of the scheduled warm-up, working alongside progressive recovery.
  • Operating Modes: Choose heat, cool, or auto mode, with an emergency heat function for heat pumps that have auxiliary heat.
  • Service Reminders: A filter change indicator and HVAC service reminders tell you when maintenance is due, so you don't miss routine upkeep.
  • Humidity Sensing: The dehumidifier control function senses your indoor humidity level and shows it on screen, so you can see when the air is too damp.
  • Temperature Scale: You can switch the display between Fahrenheit and Celsius, so readings show up in the scale you know best.
  • Slim Profile: Measures 4.38 x 0.8 x 4.38-Inches (L x W x H), so the white faceplate sits close to your wall without bulk.

Conventional or Heat Pump: Check Your Stage Count

Before installing, check your equipment's manual to confirm how many heating and cooling stages it uses. On a conventional system, the S86NMU tops out at 2 stages in each direction, so both your heating and cooling equipment must fall within that limit. On a heat pump, it supports up to 4 heating stages while cooling stays at 2. Emergency heat provides a backup option for heat pumps with auxiliary heat.

Sylvane's Expert Take

If you're replacing an outdated control on a heat pump with auxiliary heat, this thermostat is a strong fit because its 4 heating stages leave room for backup heat. It works best in homes with consistent weekly routines, where 4 daily time periods and progressive recovery make a real difference. The 2.4-inch color touchscreen handles day-to-day changes. Focus on the stage support and the early-start recovery, and you'll wake up to a comfortable home every day of the week.

Specifications

    Key Specifications

    • Compatible Systems
      Multi-Stage Heating and Cooling Systems
    • Program Type
      7-Day

    General

    • Color
      White
    • Controls
      Electronic
    • Number of Cooling Stages
      2
    • Number of Heating Stages
      4
    • System Control
      Heating and Cooling
    • Time Periods per Day
      4

    Dimensions

    • Depth (in.)
      0.8
    • Height (in.)
      4.38
    • Width (in.)
      4.38

    Additional Features

    • Additional Features
      Filter Change Indicator, Programmable, Touchscreen, Early-Start Function

    Warranty

    • Manufacturer's Warranty
      5-Year Limited Warranty

Recommended Accessories

Customer Reviews