As a landlord, you have a legal obligation to produce a valid gas safety inspection certificate to your tenants. As well as this responsibility, it’s also a good idea to ensure that you have an annual boiler service done – this will help your tenants to get the best from their heating while also potentially saving you money; if you don’t look after your boiler, it’s likely to need replacing much quicker than it would otherwise. 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.