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  • HAI Omnistat2 (RC-1000 / RC-2000) — Thermostat Technical Specifications

    August 31, 2026 3 min read

    Technical specification sheet for the HAI Omnistat2 family of energy-efficient, programmable communicating thermostats — RC-1000 (Single Stage) and RC-2000 (Multistage with Humidity Control) models, features, accessories, and part numbers.

    Full text manual (for reference)

    Technical specification sheet for the HAI Omnistat2 family of energy-efficient, programmable communicating thermostats — including the RC-1000 (Single Stage Conventional & Heat Pump) and RC-2000 (Multistage & Heat Pump with Humidity Control) models.

    Overview

    The Omnistat2 combines HAI's 20+ years in energy management into an easy-to-use device that "learns" your home's heating and cooling patterns to maximize both HVAC efficiency and comfort. According to the Alliance to Save Energy, heating and cooling can account for up to half of your energy bill — a programmable thermostat that automatically adjusts temperature during unoccupied hours can save up to 10% a year.

    • Proximity/motion sensor lights up the backlight display when approached (helpful at night)
    • Scroll wheel for simple temperature adjustment (turn right/left)
    • Three buttons for easy menu navigation: temperature setpoints, modes, outdoor temperature/humidity, weekly run time, and more
    • Choice of simple or advanced display
    • Available in Black, Silver, and White to match any décor
    • Customizable backlight color — over 100 colors, adjustable via scroll wheel

    Comfort Features

    • Supports conventional and heat pump systems, plus dual fuel with 2nd stage auxiliary heat
    • Supports one external temperature sensor (indoor or outdoor)
    • Digital precise temperature control
    • Automatic heat/cool changeover
    • Fan cycle mode — periodically circulates air for comfort
    • Displays outdoor temperature and humidity (optional)
    • Indoor sensor averaging with remote sensor
    • Humidity Control (RC-2000 only)
    • Retains settings and time without batteries

    Energy Management

    • Learns how your home heats and cools to intelligently control equipment for efficiency and comfort
    • Graphical display of HVAC usage by week
    • 7-day schedule with copy function
    • Automatic temperature setbacks for Home, Night, Away, and Vacation (when integrated with an HAI home control system)
    • Filter reminder for peak efficiency
    • Built-in vacation mode — restores comfortable temperatures before you arrive home

    Communication

    • Communicates with HAI home control systems and other manufacturers' automation systems
    • Remote access via Internet and telephone (optional)
    • Expansion port for wireless communication

    Smart Metering & Energy Cost Tracking

    The average home spends about $1,900 annually on energy bills, with heating/cooling accounting for as much as half (ENERGY STAR®). Omnistat2 models can communicate with your utility company for load-shedding applications and can display:

    • Real-time energy cost and bills, as provided by your utility company*
    • Graphical displays of energy cost per week
    • Automatic temperature setbacks for medium, high, and critical energy rate periods*

    * These features require participation from your utility company and may require additional equipment or upgrades.

    ENERGY STAR® notes: if just one household in ten switched to ENERGY STAR programmable thermostats (such as any Omnistat model), it would prevent more than 17 billion pounds of greenhouse gases.

    Model Comparison

    RC-1000 — Single Stage Conventional & Heat Pump

    • Single Stage: Gas, Oil, Steam, Hydronic, Forced Air, Radiant, Electric
    • Single Speed Heat Pumps with Aux heat
    • Dual Fuel Heat Pumps

    RC-2000 — Multistage & Heat Pump with Humidity Control

    Includes everything in RC-1000, plus:

    • 2-Stage Conventional: Gas, Oil, Steam, Hydronic, Forced Air, Radiant, Electric
    • Heat Pumps, including Air-to-Air or Geothermal
    • 2-Speed Heat Pumps with 3rd stage auxiliary heat
    • Compatible with zone control systems requiring a master thermostat
    • Variable Speed Fan Control
    • Dual Fuel Heat Pumps
    • Humidity sensing and display, plus humidifier and dehumidifier control

    Ordering — Part Numbers by Color

    Model Color Part #
    RC-1000 Black RC-1000BL
    Silver RC-1000SL
    White RC-1000WH
    RC-2000 Black RC-2000BL
    Silver RC-2000SL
    White RC-2000WH

    Accessories

    Description Part #
    Omnistat2 Ethernet Module 65A09-1
    Omnistat2 Remote Sensor Module 65A12-1
    Omnistat2 Zigbee® Module 65A10-1
    Omnistat2 Zigbee® Transceiver 65A13-1
    Surface Mount Remote Indoor Temp Sensor 23A00-1
    Flush Mount Remote Indoor Temp Sensor 23A00-2
    Thermostat Isolation Module 29A00-1
    Thermostat Power Supply Module 30A00-1
    Water Temperature Sensor 14A00-8
    Extended Range Indoor/Outdoor Temperature Sensor 31A00-7
    Extended Range Indoor/Outdoor Temperature & Humidity Sensor 31A00-8
    PESM 1101A

    Product Dimensions

    RC-1000 and RC-2000: 5 1/2" W x 3 5/8" H x 1 1/8" D