Yes, we work on a variety of different systems including heat pumps, ranging from basic to high efficiency on all brands.
We suggest checking filters monthly. If you have a disposable type filter, (these usually have a cardboard edge), and if it is dirty just replace it.
The optimum indoor range is around 35% relative humidity, but 30% to 40% tends to work best for many homes. If you go above this level, condensation on the windows can occur, breeding mold that leads to allergy and respiratory problems
R-22 is a refrigerant often used in air conditioners and heat pumps. Because R-22 depletes the ozone layer, production and import were significantly reduced in 2010. The United States Environmental Protection Agency (EPA) reduced the production of R-22 refrigerant once again in 2013. This represents a 70% reduction from the approved R-22 production for 2010. Since 2015, there has been almost a complete ban on the production of R-22.
First the price of R-22 is skyrocketing as we speak. Secondly, the supply of R-22 is limited, and eventually, contractors may not be able to guarantee to always have R-22 on hand.