Reliance Home Comfort

We have a connected water heater / forced air furnace system that very few people seem to understand. We were not getting hot water unless the furnace was running, which is not good in May, so called Reliance, who have the maintenance contract.
Joe from Flan Air was dispatched to investigate and, rather than jumping in and doing something immediately, looked and thought for a few minutes to figure out the likely cause of the problem. His analysis was excellent, he was friendly and clearly knowledgeable and, although the problem needs a plumber to finally resolve, he was able to give us a workaround that will keep us happy through the summer and make the plumber less urgent. We're very pleased.
I should add that we've sometimes had technicians sent who really did not understand this system, so it was good to find someone who could think it through in a systematic way.