3 ms·

I wonder if his apartment has gas heat and when opening the window to air it out he was causing the furnace to kick on and pump out loads more CO2? That would

I wonder if his apartment has gas heat and when opening the window to air it out he was causing the furnace to kick on and pump out loads more CO2? That would also explain the spikes during the cold overnight hours.

nanna 4y ago
Her apartment.
bentley 4y ago
Does a furnace put out enough CO₂ to worry about? The main concern is usually CO.
- kesslern 4y ago
  A furnace shouldn't be adding CO2 or CO to your air. Those combustion products should all be exhausted out of the house.
  - jandrese 4y ago
    Maybe this is something to have the landlord check? In practice I don't think most gas furnaces are as well sealed as advertised. Many years ago when I lived in a house with gas heat with a dodgy pilot light I got a pretty good feel for how the thing was put together and it was absolutely not hermetically sealed.
    - Brian_K_White 4y ago
      It's not supposed to be sealed, it's just supposed to have draft. (the flue always vacumming from convection)
      - throw0101c 4y ago
        > It's not supposed to be sealed, it's just supposed to have draft. It depends on the model. High (>90%) efficiency, condensing furnaces are completely sealed off from the house: they take in air from the outside (via PVC pipe), combust, extract the heat, and exhaust the results (via PVC pipes). * https://www.youtube.com/watch?v=lBVvnDfW2Xo https://www.youtube.com/watch?v=lBVvnDfW2Xo Older lower efficiency (<85-90%) furnaces suck in air from the house, exhaust into metal pipes (PVC would melt because not as much heat is extracted from the fumes), can be back-drafted and you have to worry about CO. Basically: if the furnace has vents in which you can see a pilot light, it's the older style.
    - MrStonedOne 4y ago
      [dead]
  - antisceptic 4y ago
    Out of the house and back in through the open windows?
symlinkk 4y ago
AFAIK with gas furnaces the air touching the flame never touches the air that goes into the house, they run them past each other on top of a thin filter to exchange heat. So the CO2 produced from the flame should not affect CO2 in the house, provided the system is not malfunctioning.

nanna 4y ago

Her apartment.

bentley 4y ago

Does a furnace put out enough CO₂ to worry about? The main concern is usually CO.

kesslern 4y ago
A furnace shouldn't be adding CO2 or CO to your air. Those combustion products should all be exhausted out of the house.
- jandrese 4y ago
  Maybe this is something to have the landlord check? In practice I don't think most gas furnaces are as well sealed as advertised. Many years ago when I lived in a house with gas heat with a dodgy pilot light I got a pretty good feel for how the thing was put together and it was absolutely not hermetically sealed.
  - Brian_K_White 4y ago
    It's not supposed to be sealed, it's just supposed to have draft. (the flue always vacumming from convection)
    - throw0101c 4y ago
      > It's not supposed to be sealed, it's just supposed to have draft. It depends on the model. High (>90%) efficiency, condensing furnaces are completely sealed off from the house: they take in air from the outside (via PVC pipe), combust, extract the heat, and exhaust the results (via PVC pipes). * https://www.youtube.com/watch?v=lBVvnDfW2Xo https://www.youtube.com/watch?v=lBVvnDfW2Xo Older lower efficiency (<85-90%) furnaces suck in air from the house, exhaust into metal pipes (PVC would melt because not as much heat is extracted from the fumes), can be back-drafted and you have to worry about CO. Basically: if the furnace has vents in which you can see a pilot light, it's the older style.
  - MrStonedOne 4y ago
    [dead]
- antisceptic 4y ago
  Out of the house and back in through the open windows?

symlinkk 4y ago

AFAIK with gas furnaces the air touching the flame never touches the air that goes into the house, they run them past each other on top of a thin filter to exchange heat. So the CO2 produced from the flame should not affect CO2 in the house, provided the system is not malfunctioning.