Smart Thermostat

Related terms

• Thermostat

  The control that calls for heating/cooling. Programmable and smart models cut energy by matching conditioning to occupancy.

• Smoke & CO Alarm Requirements

  Code rules for interconnected smoke and carbon-monoxide alarms that a remodel of a sleeping area or fuel appliance typically triggers.

• Smart Switch

  A Wi-Fi/Z-Wave switch for app/voice/scheduled control. Many need a neutral wire in the box — a constraint in older homes.

• Soil Stack

  The main vertical drain carrying waste from toilets and fixtures down to the building drain.

• Slope / Fall

  Drain pipe must pitch about 1/4 in. per foot — too little won't clear solids, too much drains liquid off solids. A frequent DIY error.

• Static Pressure

  Resistance to airflow in the duct system. High static (undersized ducts, dirty filter) overworks the blower and cuts capacity.

• Shutoff / Stop Valve

  The local valve at each fixture allowing isolated repair without shutting the whole house. Adding/replacing them is standard during remod…

• Subpanel

  A secondary panel fed from the main, adding circuits for a remodel, addition, garage, or shop. Requires correct 4-wire feeder and isolate…