When it comes to the acronym ‘Heating plus A/C’, all the people refer only to the ‘H’ (heating) plus the ‘air conditioner’ (air conditioning), and but the ‘V’ (ventilation) is important too – especially with new homes, which are built tighter than ever, then energy codes require higher levels of air sealing plus blower door tests to verify air tightness, but and narrow homes need mechanical ventilation, especially in bathrooms… Imagine stepping out of a nice hot shower, wiping the mirror with your towel in order to see yourself, however of course the hot steam produced the foggy mirror, however where does the excess moisture go? Without respected ventilation, it goes behind the walls, the tiles, plus the floor, all of which can lead to mold plus mildew. Any Heating plus A/C serviceman worth his weight in salt understands the importance of respected ventilation fans that protect against the harmful effects of the mold plus mildew… They understand that a fan does more than just detach steam; Proper ventilation needs to be powerful enough to detach all of the steam. And if a bathroom is not situated on an outside wall, an Heating plus A/C contractor can entirely run air duct to detach the moisture… Finally, an Heating plus A/C serviceman should offer a brief explanation of how long to run the bathroom fan in order to respectfully ventilate bathrooms, then most people leave the fan on only while they’re still in the bathroom. But the best practice is to leave the fan on for up to an hour in order to respectfully ventilate the room. A ventilation expert should emphasize that by venting out the excess moisture, you are absolutely contributing to your family’s health. And if you can’t lay the noise that the bathroom ventilator fan makes, for a few extra dollars, you can have a quiet bathroom ceiling fan installed.