Hayward h series pool heater

Nozzleman2727

Member
May 23, 2019
7
I have a Hayward h series pool heater. It’s less then 2 yrs old but out of warranty. I noticed last week that water was leaking out of it and after looking up some internet stuff realized it was the heat exchanger. After battling with useless pool maintenance company. I ordered a new one and installed it myself. After changing it out i was looking for where it was leaking and found the brass at the front of it where the heat exchanger was conected to the plastic fittings completely rotted away. Could this be from one season of chemicals, or does this look like a factory defect
 

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ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,673
Northern NJ
Welcome to TFP.

Hayward H series heater installation manual is here --> https://hayward-pool-assets.com/assets/documents/pools/pdf/manuals/UHS-Service-Installation-011717-RevT.pdf?fromCDN=true

Worn heat exchanger could be from poor water chemistry or it could be from too high a water flow rate. See page 25 where it says

If the normal pump and filter system flow rate exceeds
125 gpm then a manual bypass valve must be installed as
shown in Figure 12. Damage caused by flow rates outside
this range will void the manufacturer’s warranty.


High water flow will erode the heat exchanger.

Without knowing your water chemistry over the last 2 years and your pool equipment we can't pin down more of a cause.

If you are going to hang around here please put details of your pool in your signature. See What we need to know to answer your questions
 
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ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,673
Northern NJ
@mas985 may be able to help but we need to know details about your pump, filter, valves, water features, etc.

Again, details of your our pool in your signature would help us help you.
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,700
Pleasanton, CA
Pool water is generally not very abrasive especially after the filter plus it would takes years if not decades to erode that much copper.

However, corrosion can be much faster but still, within two years seems much too short. Unless of course the PH has been extremely low for that period of time. But it would probably have to be so low that the water would not be safe to swim in.

You might send some pictures to Hayward to see what they say. But I suspect they will blame your chemistry.
 

Nozzleman2727

Member
May 23, 2019
7
[QUOTE="Nozzleman2727, post:
  • Ideal for above ground pools up to 24' Round and 18'x33' Oval
  • Includes filter cartridge, union connection, air relief valve, pressure gauge, 1.5-HP 2-Speed pump, (2) shut-off valves, filter base, (2)1 1/2" x 6' filter hoses, hose adapters, and hose clamps
  • Half turn Secure-N-Lock Seal ring allows you to easily remove cartridge from filter tank
  • Includes 6' power cord with standard 115V plug
  • Powerful 1.5-HP 2-Speed pump with High & Low speed settings to save energy
  • Pump includes ON/OFF switch
  • Corrosion resistant, reinforced thermoplastic tank ensures maximum durability and long life
  • Maximum Flow rate of 120 gallons per minute or 60,000 gallons in 8 hours
  • Pump Amperage: 8.5 Amps on High speed & 3.5 Amps on Low Speed
  • 2-year limited manufacturer's warranty
  • Approximate outside dimensions: Length: 28", Width: 25", Height: 25"
 

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