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Home Monitoring 5.0: What to Measure and Why

The sensors that actually matter, where to place them, and how to see comfort and spending on one clear dashboard.

Quick summary

  • Problem: we fill the house with gadgets and apps, yet still can't say why it feels cold or stuffy, or why the bills spike.
  • The e2b approach: measure a few things well: comfort, air and energy, with sensors placed where the spending is actually decided.
  • What you get: a minimal sensor map, clear thresholds and an interactive maturity check for your home.
  • Time: 7 minutes to read + 3 minutes to run the check.

1) Monitoring is not covering everything in sensors

Monitoring a home well is not about having 20 connected devices. It is about answering three simple questions:

  • Comfort: are we within a reasonable temperature and humidity range?
  • Air quality: are there times of high CO₂ when we should be airing the rooms?
  • Energy: how much of the bill goes to heating, cooling or hot water?

If your sensors don't help you answer these three questions, you have home automation... but not useful monitoring.

2) The key sensors and where to place them

Indoor comfort and air

  • Temperature + humidity in the living room and main bedroom.
  • CO₂ sensor in the bedroom.
  • Set thresholds based on occupants, climate, ventilation and how the building is used. Do not treat any comfort or CO₂ figure as a safety guarantee or a universal regulatory limit.

Energy and consumption

  • Whole-home electricity meter reading.
  • One measurement point for heating and cooling (heat pump / boiler).
  • Optional: hot water and heavy appliances.

3) Practical steps to set up your system

  1. Take stock. Which sensors you have and where.
  2. Find the gaps. Missing CO₂? Can't see what heating and cooling use?
  3. Define a minimal dashboard. Temp/humidity per room, CO₂, daily kWh.
  4. Set thresholds. When an alert should fire (e.g. above 26°C in summer).
  5. Run the check. Assess your maturity level below.

Maturity Check

Tick the sensors and data you already have. We'll show your current level and your next step.

Comfort and Air

Energy

Events

Tick your sensors to see the analysis. Any preselected values are examples.

Illustrative example: from a "feeling" to clear data

Imagine a family flat with two clear complaints: "you can't sleep in summer" and "the bills are high".

They added temperature and humidity sensors in the bedrooms plus a CO₂ sensor, and they measured what the heating and cooling used on its own.

In this example, the outcome is lower electricity use for air conditioning and better sleep from airing the rooms with judgment.

Two-week mini plan

Week 1: Stocktake

  • List your current sensors.
  • Group them into comfort/air/energy.
  • Run the check to spot the gaps.

Week 2: Dashboard

  • Set up one unified dashboard.
  • Fix 3 alert thresholds.
  • Decide what happens when a threshold trips.

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Summary and Next Steps

Common Mistakes

  • Useless sensors: measuring for the sake of measuring doesn't work.
  • Forgetting CO₂: key for health and sleep.
  • Not looking at the data: a dashboard nobody reviews is useless.

Success Metrics

  • Comfort hours: % of time in the ideal range.
  • CO₂ peaks: fewer stuffy nights.
  • Heating/cooling spend: €/month on heating and cooling.

Illustrative example

Imagine a family that measures what their heat pump actually uses and adjusts schedules and temperatures against real comfort data: the heating and cooling bill can come down without giving up a single degree of comfort.

Your Action Plan

  • Today: Take stock of your current sensors.
  • In 7 days: Install a CO₂ or heating/cooling meter.
  • In 30 days: Review the dashboard and adjust one habit.