HVAC

EM heat is an indicator on your thermostat that something is wrong with your system. In this article, we look at what Em heat means, when you should use it, and what to do if your system switches to this heating method.

SmartAC provides wireless, smartphone monitoring for your HVAC system. It’s easy to set up and gives you fast access to local technicians in case of a problem. But this product also had a few issues. Find out what they were and if this is worth the purchase in our hands-on review.

Understanding how many CFM per ton of cooling your HVAC system needs is important for building the right system to keep your house comfortable. Here, we answer that question and look at the many reasons you may need more or fewer CFM than average based on the specifics of your environment.

Wondering how often you should change your HVAC filter? It depends on the type, the rating, and how much work your filter has to do. We’ll cover all those considerations and more in this helpful answer guide.

Using an HVAC return air vent filter has many benefits but may not be right for certain setups. In this guide, we look at when to use a return vent filter, how to pick the right type, and how to clean your filter to keep it performing its best.

Having the right-sized HVAC ducting in your home is important for keeping rooms comfortable without overtaxing your system. In this guide, we go over the calculations needed to determine the ducting you need and look at the key factors for determining duct size.