Happy Thanksgiving

Happy Thanksgiving from D-N-D Services / Rockwall heating and air conditioning repair and  service

D-N-D Services Rockwall|Greenville

D-N-D Services is proud to announce we have an A+ accredited rating with the Better Business Bureau. D-N-D Services is the  #1 Carrier Factory Authorized Dealer in Rockwall. Carrier Factory Authorized Dealers have earned their distinction—it’s not “given” to them. And it’s not about what they are, but what they’ve done and continue to do… [Continue Reading]

Merry Christmas from D-N-D Services

    Christmas is a time for cherishing those who bring so many blessings to our lives. Christmas is a great  season of our year that brings with it joy, love, and heartwarming thoughts.  Christmas magically allows us to convey  love, concern and sincere thoughts in just the right way to almost anyone we know… [Continue Reading]

How to set thermostat in a two story house in summer

Temperatures Upstairs and Downstairs Here at D-N-D Services, we are often asked how to set thermostats in a two story home. For two story homes balancing the air temperature is a little more complicated than in a single story home. Almost everyone knows heat rises and cold air falls. This is called thermal convection and can… [Continue Reading]