Collecting sperm at home or onsite?

When doing an IUI or IVF did your partner choose to do a at home sample or on-site at the clinic?

Both times he did at the clinic and felt awkward and sample wasn’t the greatest but were thinking about at home collection for Ivf so he can feel more comfortable but heard you have to keep the sperm warm and get there within a certain time. Any advice? Or does it make a difference?