Photorealistic Product Render

I need a photorealistic rendered image for large format marketing material ie billboards. .

Requirements:
- High-quality, photorealistic rendering
- Attention to detail in product representation
- Use of realistic lighting and shadows
- Transparent background

Ideal Skills & Experience:
- Proficiency in 3D rendering software
- Strong portfolio in photorealistic product images
- Experience in creating marketing visuals

I can supply product images (hot water heat pump and a split system indoor/outdoor unit air conditioner) which will need to be enlarged and then rendered so they don't look pixelated.

Please provide samples of similar work. Looking forward to your bids!