The phrase "a qualified service" is correct and usable in written English.
It can be used to refer to a service that meets certain standards or qualifications, often in a professional or technical context.
Example: "We are proud to offer a qualified service that adheres to industry regulations and best practices."
Alternatives: "an accredited service" or "a certified service".
If you cannot correct the problem, you will have to call in a qualified service technician for consultation.
The attorney general, responding to consumer complaints, would like General Electric to finance the entire cost of the rewiring, about $75 for a qualified service call, and to provide more money for rebates.
And what exactly is a "qualified service plan"?
The second one that piqued my interest was that, while new and existing AT&T customers can purchase an iPhone, only those with a "qualified service plan" need apply.
"Remember to have the heating unit installed by a qualified service technician.
Certain commercial lease contracts require that a qualified service technician perform all maintenance tasks required for a laser printer.
By opening infantry, artillery and other battlefield jobs to all qualified service members regardless of sex, the military is showing that categorical discrimination has no place in a society that honors fairness and equal opportunity.
By opening infantry, artillery and other battlefield jobs to all qualified service members regardless of sex, the military is showing that categorical discrimination has no place in a society that honors fairness and equal opportunity.Of course, not everyone is so thrilled.
The current state of joint replacement in Germany contradicts the German social legislation which calls for a highly qualified service according to the current state of scientific and medical knowledge.
"This is really a network of qualified service providers -- a service our clients can use, with a lifetime privilege".
Your contractor may be able to do both of these things for you, if they are an experienced and qualified service.
