In 1996 it became a legal requirement for Landlords to ensure that any rental property has a Landlord Gas Safety Certificate carried out annually, on all gas appliances. Landlords must ensure that all gas appliances and flues fitted in any property have an annual landlord gas safety check by a gas safe registered engineer. 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.