When you choose to let out your home, there are various things that you have to do before it is suitable to let out. These include getting the home in a good condition, working out how you will accept rent and there are also various certificates that you will need for legal reasons. It is not just as simple as finding tenants, moving them in and collecting the rent. Refrigerant Oil Enhancement has proven to be highly effective, affordable and able to increase efficiency in air conditioning HVAC, chiller and walk in refrigeration units. This efficiency technology requires no new HVAC equipment and in a commercial setting will show a payback ROI within a year. This conservation product is a specifically blended refrigerant oil supplement that has multiple beneficial attributes when added to the refrigerant line of existing HVAC compressors along with the existing refrigerant oil.