A ductless mini-split system is comprised of an indoor unit called the evaporator and an outdoor unit called the condensing unit. The evaporator is connected to the condensing unit by copper tubing and electrical wiring which is passed through a 2 ½" - 3" hole. Basically, it is a small central air unit with the flexibility of cooling or heating one room or more; zoning.
A heating a home with a heat pump is one of the most energy efficient ways to do so. A ductless heat pump can save you 30 - 40% or more on your utility bill.
Instead of using energy to create heat, the heat pump extracts heat from the outside air and transfers it into the home.
Typical range is -15 °C to -30°C but, every heat pump model is different. Always check your models rating.
It's generally much more efficient to leave your heat pump running continuously because heat pumps are more efficient when they heat or cool your room at a consistent rate.
Every 2 weeks check and clean the filters on your indoor-condenser unit, to keep it running efficiently.
Air flow is paramount to the operation of the unit. Please ensure snow and debris is cleared a minimum of 2-3 feet around your unit. Failure to maintain proper air flow to the unit, even in short periods, can result in damage to the unit.
When the heat pump and indoor condenser unit turn on at the same time there might be a bit of cold air blowing while the heat pump's refrigerant takes a minute or two to build up heat.
This normal and typically means is the heat pump going through the defrost cycle. The defrost cycle is where the unit temporarily reverses the flow of refrigerant which results in a vibrating noise and rushing water sound but, is necessary for your heat pump to maintain efficiency. If you hear these noises leave the unit alone and let it go through its cycle.