Show what happens there
Photograph snow accumulation from a safe position. Note drifts, roof shedding, dripping gutters, downspouts, and water freezing beneath the unit. Include the area after both a typical storm and the deepest accumulation you have observed.
Ask whether snow reaches the coil, blocks an air path, or interferes with service access. Normal frost cleared during defrost is different from a snowbank around the equipment.
Do not jack up the unit, change its supports, chip ice from the coil, or pour hot water on it. Refrigerant lines, wiring, stability, and drainage need to remain suitable when placement changes.
Request a placement review
Have the installer identify required ground and surrounding clearances, permitted supports, and requirements for expected snow depth. Ask how defrost water will leave without becoming obstructing ice.
The support must fit the unit's weight, mounting requirements, and site conditions. A taller stand can introduce a stability or vibration problem if it is unsuitable.
Ask whether the location receives avoidable runoff or drifts. Relocation or an approved snow measure may deserve comparison with risers. Any protection must preserve airflow and service access.
Get the whole correction
A useful proposal identifies the support, height, attachment, drainage, necessary line or electrical work, and responsibility for each part. It should explain the observed problem the change addresses.
If the unit struggles to heat or remains heavily iced, request diagnosis as well as placement review. Raising it does not automatically fix an equipment fault.
Your next step is to send site photos and ask the installer to compare the installation with the actual instructions and snow exposure. Choose a complete placement correction, not just a taller platform.