heat exchanger failed early

My Hayward 250k BTU NG heater is nearly toast. The heat exchanger started leaking last year, and my epoxy putty patch fixes only seem to hold for a few months at a time. I'm eyeing the Rapyak Avia 264k BTU unit as a replacement. The "NiTek" (nickel-plated copper?) heat exchanger option is...

Hi Everyone, Looking for a second opinion on an issue we are having with our spa heater. We built our house a couple of years ago and have a large pool and large spa. The spa is around 2500 gallons and is used year round in a cold weather environment in northern Ohio (my wife is nuts). This...

Guys - new pool install with Hayward H500 natural gas heater. Bypass installed for start up, flow meter for correct flow rates per manual. Large spa - 12x12 approximately. Keep getting LO and lockout when heater gets water up to about 75-80 degrees. Warrant company comes out and checks and...