Can I do the install myself for the tax credit?

Yes, you can install the eligible product yourself, you are not required to have a particular contractor do the install.

Many of the energy efficiency tax credits allow the cost of installation/labor to be included in the eligible amount (view this FAQ for details). However, if you install the product on your own, you can not claim a labor charge for the installation. There is no basis for which to charge the government for your time.