I recently had Sparks heating and air conditioning service our furnace and air conditioning units.
The service man arrived promptly very close to the time that we were told he would arrive. He was very thorough and checked out our air conditioning and our furnace. He provided some extra tips on how to conserve and make some adjustments that would reduce our power costs.
The next morning we thought we had a problem with our furnace so we called him and he came back out to make a minor adjustment. Very good customer service