Current HVAC Promotions from Daniel's Heating & Refrigeration Corp. You could say you just discovered the sprinkles to top off your sundae. Or you could just be happy that you’re getting a little savings you may not have predicted. Either way, you’re in luck, because we have a few special HVAC promotions that will probably interest you. From routine maintenance savings to new or replacement system savings, make sure you take advantage of all the promotions in Midlothian. For better savings, be sure to ask about potential federal tax credits and other rebates that may be given out by your utility company. Find information about our Federal HVAC Credit.