Made by the ventilator’s makerS&P (Soler & Palau)

S&P SCO2-W

S&P’s adjustable CO2 control, listed for its TRC and TRPLe ventilators.

$781.60 at Ferguson Home (special order); Sylvane’s page lists $852 (October 17, 2026)

How to set itCompare it
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At a glance

  • Can be set under 800
  • Adjustable from 600 to 2,000 ppmSo 750 is in range.
  • S&P lists it for the TRC and TRPLe, not the TReRetailers disagree about which units it fits. Ask S&P about yours.
  • Runs on 24 V AC, with a building-automation interface

Setting it for a bedroom

HouseExhale’s setting: switch up at 750 ppm and back at 650, or ramp from 600 to full by 750. Never above 800.

  1. Set it to 750 ppm.
  2. Ask S&P, or your installer, how it signals your unit and whether the unit stays on its normal speed below the setting.

A Danish study ran a bedroom fan from about 900 ppm and the nights still averaged 835, so a control has to start below the goal. Good home CO2 sensors are rated within about 55 to 90 ppm at 800, and the night average includes the climb after bedtime, so 750 on and 650 off leaves room for both. A control in the return duct mixes the bedroom with empty rooms, so it needs lower settings still (about 650 on, 550 off), and your monitor in the bedroom has the final word. These are HouseExhale’s numbers: no study has tested a control against an 800 night average yet.

What it works with

Documented for: S&P TRC and TRPLe (S&P’s July 2022 brochure).

How to add CO₂ control to an HRV or ERV · HRV and ERV units

Specs

Range
600–2,000 ppm, adjustable
Power
24 V AC
Listed for
S&P TRC and TRPLe

From the maker’s documents, read October 17, 2026. Prices are before tax and shipping and change often.

Made by the ventilator’s maker

Sold for a maker’s own units, with the wiring in its manuals. An installer fits them.

Sources