Wicked quick service! Called on a furnace that was cycling quickly – every 10min.. Turns out the register was blowing warm air right on the thermostat… He closed up the register a little and *poof* – no more quick cycles. Dave was in the neighborhood, and service was within the hour – lucky, but his experience yielded dang great work.. Went on to check a couple more things, air filter, plenum temp. all was in order – Thanks Dave!