A professional estimate should specify the type and model of equipment, materials included, length of piping, type of support, electrical work, drainage, and labor details.
It should also be clear if elements such as gutters, protections, removal of old equipment or work at heights are contemplated.
In addition, it is essential that the installer indicate the estimated time of execution, payment terms and guarantees. This not only protects the client, but also demonstrates commitment and professionalism.
Avoiding “quick” and not very detailed quotations can save you technical and economic problems in the future.