HVAC contractors get involved daily with equipment and conditions that can come into play regarding the presence (or absence) of mold. And yet, most contractors do not offer mold remediation work themselves, preferring to refer to a specialist or simply let the customer pursue solutions elsewhere.
This avoidance may be due to a lack of personal experience, or a reluctance to invest in another area that requires additional training and staffing and equipment, or perhaps all of the above.