Have you ever been asked, or ever wondered, âIs refrigerant, especially R-134a, heavier than air?â. Just this week I was asked this very question. Thinking I knew the answer right away, I was able to contain my natural, blurt-it-out style of an answer, at least until now.
Add a Contact to the Blocked List. Block someone from calling or texting you one of two ways: 1  To block someone who has been added to your phone's Contacts, go to. 2  The All Contacts window will appear where you can scroll through names to then tap the name of the contact you'd like to block.
Block Person. Start your Web browser, navigate to the YouTube website (youtube.com) and log in to your YouTube account. Click the name of someone whom you wish to block. The person's YouTube profile page appears.Click the Block User link in the Connect With section to keep the user from sending you messages to your YouTube account or writing comments on your videos. person communicating over the Internet may feel protected because of distance and anonymity to make rude comments about your YouTube video that he wouldn't say in person. If people harass you on your YouTube channel with unpleasant remarks or profanity, you can block them from communicating with you any more.