Arrived on site to diagnose no heat on boiler. We found that the igniter had sooted up again. We cleaned it and took a resistance measurement of both the igniter and the igniter cable. Both were reading out of specification for proper spark ignition. We provided an estimate to replace the igniter cable and igniter along with a leaking hyvent. Both were accepted but we are not able to get the igniter until tomorrow. Work is tentatively scheduled for tomorrow. Boiler is operating at this time but there’s no guarantee the existing igniter will keep working.