Frost on the heat pump
If your heat pump looks like this, don't be alarmed. It will clear itself in within the hour as it performs a defrost cycle. Why does frost form on your heat pump? How does this all work? A heat pump is nothing but an air conditioner with an extra couple of components - a reversing valve and a defrost control board. The typical air conditioner rejects heat into the outside air and extracts heat (cools [...]