YJ analogs may be as much as 30# off right out of the box... it has been documented here at H-talk many times.
My digicools are 6 yrs old... they have withstood more abuse than any analog gauge would.
It is said one can tell the quality of someone's work by the quality of their tools.
GA-HVAC-Tech
Your comfort, Your way, Everyday!
GA's basic rules of home heating and AC upgrades:
*Installation is more important than the brand of equipment
*The duct system keeps the house comfortable; the equipment only heats and cools (and dehumidifies)
*The value of comfort, over the long term; leave economic choices behind!
Choose your contractor wisely!