Hello everyone. Posted last year and appreciated your suggestions, so i've come back for some more insight. Similar to the person who posted here http://www.troublefreepool.com/greet...ward%20h%20250, my Hayward H-250 gas pool heater is not coming to the desired temp this year. It is lit, the pressure switch is as high as it can go (too high and the heater won't light), and water pressure is fine. In fact, water pressure is actually better than last year actually as I replaced the sand in the sand filter and did some maintenance.
It is pumping water out at 85 F, but last year my wife left the heater on overnight and we woke up to a pool that was 94 F so I know when its set to max it is supposed to be higher. By contrast, its been on the better part of all weekend and the pool temp is at 81 and this seems pretty much like the max its going to get.
Please keep feedback basic as I'm still new to pool stuff. Cost me $140 for a tech to come in and stand there and look at it last year, so would prefer to at least do the basics myself. Thanks in advance, and hopefully can help others as well somewhere along the way.