Most heater calls are flow calls
A dirty filter, a closed valve or a failing pump starves the heater and the flow switch shuts it down. The heater is doing its job. That is a filter service or a valve, not a heater.
What ruins an exchanger, and how you avoid it
Water that runs acidic eats the copper in the heat exchanger from the inside, and the failure shows up as a leak years later. Balanced water is heater maintenance — which is why our chemistry report and our heater work are the same conversation.
Gas, safely
Gas pressure and venting are checked, not assumed. If something is outside what the manufacturer allows, we stop and tell you rather than getting it lit.
Tell us about the pool. We will tell you the next opening.
The chat takes the symptom and the address, then hands it to the desk. It books visits — it never tries to diagnose a pool in a chat window.