Pentair MasterTemp/Max-E-Therm Tube Sheet Coil Assembly | 474061
Pentair
SKU: 474061
Pentair Tube Sheet Coil Assembly Kit (New Tub Design) for MasterTemp® / Max-E-Therm® 400 | 474061
The Pentair 474061 is a complete tube sheet coil assembly kit (heat exchanger assembly) for select 400,000 BTU Pentair MasterTemp® and Sta-Rite Max-E-Therm® pool/spa heaters. It’s used to restore proper heat transfer and water sealing when the original coil/tube sheet assembly is leaking, scaled, damaged by corrosion, or freeze-stressed.
Compatibility
- Pentair MasterTemp® 400 models: 400NA and 400LP1
- Sta-Rite Max-E-Therm® 400 (NA/LP series where parts diagram specifies 474061)
- Heaters manufactured after 01/12/2009 (new tub design)
Tip: MasterTemp/Max-E-Therm coil kits are model- and revision-specific. Confirm your heater model and manufacture date so you get the correct “new tub design” kit.
What This Kit Does
- Replaces the heater’s internal tube sheet/coil heat exchanger assembly
- Restores proper water sealing and heat transfer through the heater
- Helps correct leaks or loss of performance caused by a compromised coil assembly
What’s Included
- Tube sheet coil assembly kit for MasterTemp/Max-E-Therm 400 (new tub design)
- Seal/O-ring and gasket components commonly included with the kit for coil installation (contents can vary by packaging revision)
Common Reasons to Replace
- Water leaking from inside the heater (coil/tube sheet area)
- Reduced heating performance due to heavy scaling or internal restriction
- Freeze damage, cracking, or corrosion on the heat exchanger assembly
- Major heater rebuild where you want fresh seals and core water-system components
Installation Notes
- Turn off gas and power at the breaker, and allow the heater to cool fully before service.
- Shut off the pump, relieve pressure, and drain the heater water circuit as needed.
- Clean mating surfaces thoroughly before installing new seals to reduce leak risk.
- Reassemble evenly and verify no leaks during startup and heat-up.
- Heater service should be performed by a qualified pool professional or technician.
Specifications
- Brand: Pentair
- Part Number: 474061
- Part Type: Tube Sheet Coil Assembly Kit (heat exchanger assembly)
- Heater Size: 400,000 BTU class (400 models listed above)
- Design: Post-01/12/2009 (new tub design)
Related Products
- Search Aqua Pool Supply for 474061
- Pentair MasterTemp 400 replacement parts
- Sta-Rite Max-E-Therm 400 replacement parts
- Heater gaskets & seals
- Heater union kits
Maintenance Tips
- Maintain balanced water chemistry to reduce scale buildup that restricts flow and lowers heat transfer efficiency.
- Keep circulation strong (clean baskets and filter) to avoid heater cycling and overheating.
- If your area freezes, winterize properly—freeze damage is one of the most common causes of coil failure.
- If you see recurring internal leaks, address water balance and bonding/grounding issues that can accelerate corrosion.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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