For bigger lift maintenance jobs, it is always recommended to use a professional service. This is because professionals will be able to keep your lifts at the required safety levels that they need, which will be easier for them to achieve than you.
Many lift maintenance companies will form partnerships with your business, so they will get to know which lifts need which services and how often. Once they have this knowledge, they will be able to perform the exact maintenance that the lift needs, which will increase the first-time fix rate of the lifts, and make them better for daily use.
If you partner with a lift maintenance company, they will also help you with emergency repairs and maintenance, which will give you added peace of mind so you don’t have to panic about finding an engineer.