Scented products cause indoor air pollution on par with car exhaust

On average, we inhale 20 lbs of air per day. This is greater by weight than the food or water we consume in a day. We should be paying a lot more attention to air quality.

I can't help but feel like it has taken a nosedive as well. Modern homes are sealed and don't recirculate much outdoor air. As a result you have all this modern american living plastic material constantly offgassing. your fleece shedding microplastic particulate into the air that you then breath, eat, burn over the stove and inhale the fumes. You can't even do anything about it. Get rid of all the plastic you want in your life and the water supply is what is contaminated next. Your neighbors dryer exhaust and their fleece polluting your air. Restaurants. The food suppliers. Move a thousand miles away to the tip of the mountaintop upstream of everything conceivable, and you are liable to be bombarded with it carried via updrafts from around the world along with the rest of the usual pollution.

We can't even slow down the consumerism. Everyone's job around the world is someway tied into this rampant production of cheap plastic goods to replace cheap plastic goods from yesterweek. You try and nip it in the bud everyone is liable to lose their job and everything might very well collapse because of how we chose to stack this deck of cards on this planet.

My house in the UK is 300 years old. It is built of stone with proper ventilation built in everywhere. It never gets damp, never too cold or hot. Air circulates enough to constantly be fresh yet not quick enough to create a draft.

Its a shame homes arent built like that anymore. Looking at how houses like this work really shows how we have created solutions to our own problems in modern home building.

Look at passive houses, almost fully airtight, 70%+ reduction in heating requirements, fresh air all day long thanks to hrv

The problem is that people want "cheap" houses, cheap houses coupled with modern regulations = sealed boxes. The average joe doesn't give a shit about building quality, it's all about getting something big and as cheap as possible.

> fresh air all day long thanks to hrv

This costs power and materials. Old houses dont require that. On a global scale, that increases power and manufacturing on a huge scale. Why are we throwing power and more modern materials at a problem that was solved in Roman times?

This would also reduce cost, helping the 'cheap' houses issue.

> On a global scale, that increases power and manufacturing on a huge scale. Why are we throwing power and more modern materials at a problem that was solved in Roman times?

Really?

A high quality modern balanced ventilator can ventilate an average sized house using 20-40W. That can supply over 100cfm and avoid around 90% of the conditioning that those 100cfm would otherwise require.

A good approximation is that 1 cfm at a 1 degree F temperature difference transfers 1.08 BTU/hr (sigh) or 0.317W of “sensible heat”. So, in a mild Mediterranean climate in the winter, heating by 30 degrees F, that 100cfm needs 0.317 times 3000 = 951W of sensible heat added.

So you can burn 951W of fuel. Or you can use 20-40W to get the same amount of fresh air but only need 95W to heat it. Or live in a climate with warm days and cool nights and require less thermal mass and therefore less material to moderate the temperature and avoid the need for active heating or cooling.

Without an HRV, either you don’t heat the building, or you ventilate less, or you use considerably more resources for temperature control.

Oh, and the device itself is two fans, a heat exchanger (fancy piece of plastic, generally), and some electronics and a box. Not exactly resource-intensive to build. And it can usually completely replace your bathroom fans if configured to do so, making it even less resource intensive.

In climates that require dehumidification or winter humidification, it’s more extreme because an ERV can exchange humidity (“recover latent heat”) too.

> Really?

Yes

> ventilate an average sized house using 20-40W

Lets take your conservative estimate of 20w

Quote from Googling: "As of July 1, 2023, there were 145,344,636 housing units in the United States"

145,344,636 x 20w = 2906892720W or 2906.89272MW.

Another quick google says that the average Nuclear power plant outputs 977 MW.

So thats 3 whole nuclear power plants required just to power the hrvs in American homes, using your conservative estimate.

That is without the power required to manufacture, transport, and install 145 million hrvs.

However you phrase it and whatever you say to justify it, thats a huge amount of power required to replace something which nature is quite capable of doing itself.

EDIT: I have just also considered the waste as well. The average HRV has a lifespan of 15 years, so that would be 145 million hrv pumps thrown out and new ones built every 15 years. Thats a massive amount of constant power being used, and mountains of unecessary waste, as well as the power to process that waste etc etc...