Featured Deal 1

$250 OFF

Any Complete Home Comfort Heating & Cooling System

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with coupon #4

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$100 OFF

Any Furnace Installation

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with coupon #4

Featured Deal 3


Service Call Upon Repair

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Featured Deal 4


Humidifier Plus FREE Honeywell Programmable Digital Thermostat with any new Furnace Installation

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S1-MZS4 Control Panel

S1-MZS4 Control Panel

Four Zone System Controller

The S1-MZS4 Panel can control up to 4 zones and can be expanded by the use of the S1-MZA adder panels up to ten (10) zones. This panel is capable of controlling single stage and two stage heating and cooling, as well as up to three stage heating and multi-speed heat pumps. This multifunction board uses any 4-wire thermostat. Two stage and heat pump thermostats are NOT required, however Heat Pump thermostats can be used to remotely control the Emergency Heat.

Product Description

Special Benefits

  • NEW COLOR Coded Push-In Wiring Blocks
  • Uses Any Four Wire Thermostat
  • Three Stage Heating, Two Stage Cooling & Heat Pumps
  • Four Zones Panel – Expandable to Ten (10) Zones
  • Leaving Air Sensor for Capacity Protection
  • Staging by Time or by Number of Zones Calling
  • Intelligent Changeover Timing
  • Indicator Lights for System Operation


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