Waterway Executive 48, 4.5HP 2 Speed, Pump 2.5" in, 2" out, PF-45-2N22

Reg: $668.09
(You save $248.90 )
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  • 4.5HP Waterway Executive hot tub pump, 2 Speed 48 frame,
  • Waterway OEM part # 3421821-13, - #PF-45-2N22.  
  • 2-1/2"" intake and 2.0" discharge, See bottom of page for important sizing guide
  • 220-240volt,
  • 12.0 Amps high speed (3450 RPM)
  • 3.5 Amps low speed (1725 RPM). 
  • New cord and unions not included, sold separately.
  • We Include, 2 union O-rings, automatically added to cart at checkout.
    When replacing a hot tub pump it is recommended to replace the union O-ring as they can develop flat edges from being compressed over the years and when a new pump is installed without replacing the O-ring the union can leak and if over tightened will crack.
  • PLEATE NOTE: This pump is not a compatible replacement for the PF-45-2N22C used in Beachcomber hot tubs. This is a smaller 48 frame pump, the PF-45-2N22C in Beachcomber hot tubs is a 56 Frame model, sold here

The PF- model number from your old pump should not be used as a reference for selecting a new replacement pump as Waterway has produced up to 4 known variations of pumps with the same model number which are different enough that they are not interchangeable. Always select a replacement pump with the same part number as the Waterway part number on the label on your old pump.

Orientation of wet end.
Pump wet end can be oriented in 90 Degree increments, up, left or right as shown in illustration on the right. Pump will ship with discharge directed up. To change the discharge orientation, loosen the pump's four through bolts from the back of the motor and pull them back enough to disengage. Then rotate the wet end to the desired position, realign and re-tighten the bolts.  

Pump Intake Size
Determine the pump plumbing size by measuring the outside diameter of the wet end male threads. Plumbing sizes for hot tubs are nominal, and not actual outside diameter (O.D.) of the the threaded intake or discharge. Once you have removed the pump, use a tape measure to check your old pump thread size and compare to the sizes below.
If your pump thread O.D. is (approx.) 2 3/8",  Then you'll need a pump with union size 1 1/2".
If your pump thread O.D. is (approx.) 3.0",     Then you'll need a Pump with union size 2.0".
If your pump thread O.D. is (approx.) 3 5/8",  Then you'll need a Pump with union size 2 1/2".
Please note!
Some brands of hot tub spa pumps have non-standard threads and use fitting sizes with different dimensions. These brands are: Hayward, Jacuzzi and sta-rite.
Manufacturers 1 year limited warranty.

2 Reviews Hide Reviews Show Reviews

  • 5
    Good pump!

    Posted by Jess R.. on 18th Jan 2018

    Quality seems top notch. Works great!!

  • 5
    Like the price

    Posted by Eric on 23rd Nov 2015

    Don't have to buy my parts in the US anymore since I found this store in Canada, they have prices close to US prices and ship from place in Vancouver to BC customer which is a plus. Good prices and great service.