We contacted alpha tech at the end of July about our fridge, which wasn't cooling. The technician charged us over $400 without providing an invoice breaking down the cost of parts vs labour. Having spoken with others about similar jobs it seems we may have been over charged.
Despite the technician's insistence that this would be a long-term fix the same problem with the fridge recurred only 6 weeks later. They only guarantee work for a month, so we are in the same position as we were in late July but out almost $500 for the cost of repair + taxes. I would strongly dissuade anyone from going to Alpha Tech.
Update: After posting this review the company contacted me offering to re-do the repair at no cost. We decided to purchase a new fridge anyway so I can't comment on the quality of that work, but I've amended my review to reflect this new information.