It was two years ago this week we had the nasty old fossil gas natural draft water heater removed. (That's it in the photo below.) Outside of running a gasoline powered generator inside a house, this kind of water heater…
What’s the first image that pops into your when you see the term “water heating”? It’s probably a water heater tank. Depending on your interests or what you have in your home, perhaps it’s a tankless or solar water heater. …
The COVID-19 pandemic has changed a lot of things, including my view on higher ventilation rates. A few years ago, Joe Lstiburek of Building Science Corporation pushed hard for lower ventilation rates. He believed ASHRAE's residential ventilation standard (62.2) resulted…
It's time to revisit one of my favorite topics: the powered attic ventilator. Ten years ago I wrote an article titled Don’t Let Your Attic Suck - Powered Attic Ventilators Are a Bad Idea. It's got 169 comments and would…
My friends Elena Chrimat and Alex Williams* recently went on vacation in Mexico. They booked a condo and traveled down there from their home in the Phoenix, Arizona area. They may the first ones ever to stay there who looked…
![Zehnder Energy Recovery Ventilator [Photo Credit: Albert Rooks, Small Planet Supply]](https://i1.wp.com/www.energyvanguard.com/wp-content/uploads/2021/05/zehnder-energy-heat-recovery-ventilator-albert-rooks.jpeg?fit=1000%2C520&ssl=1)
You know that old saying, "No good deed goes unpunished"? It applies to a lot of homes with respect to ventilation. If you simply bring outdoor air into the house, you pay for it...in more than one way. The outdoor…
So you want to have better indoor air quality at home but you aren't sure what to do. If you read my last article, you know you shouldn't buy an electronic air cleaner. Instead you should stick with the tried-and-true…
The pandemic has brought a huge amount of attention to indoor air quality, even without full acceptance of the aerosol transmission of COVID-19. Unfortunately, it has also brought a huge amount of money to companies selling questionable electronic "air cleaners." …
You may not want to think about this but every time you inhale, you're breathing in air that came out of someone else's lungs. One of my favorite ventilation quotes drives this point home. In a book titled Ventilation and…
The two kinds of people in the world are those who can extrapolate from incomplete data. Regarding how COVID-19 spreads, the data are becoming more and more complete now. And the facts and analysis all point to this deadly virus…