Jabsco Par-Max HD4 vs Jabsco Par-Max HD5

Last updated: November 9, 2026

The Jabsco Par-Max HD5 is the better RV water pump overall, rated 3.4 to 3.2. The Jabsco Par-Max HD5 leads on flow and efficiency. The Jabsco Par-Max HD4 costs $63.23 less ($165.60 vs $228.83).

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Jabsco Par-Max HD4 vs Jabsco Par-Max HD5

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every 4 GPM and up RV water pump; a clear win is highlighted. How we rank explains each one.

Factor weightJabsco Par-Max HD5Jabsco Par-Max HD4
Overall rating3.4/53.2/5
Value 25%28 $45.77 per GPM ($228.83, 5 GPM)34 $41.40 per GPM ($165.60, 4 GPM)
Flow 20%75 5 GPM rated open flow50 4 GPM rated open flow
Pressure 15%86 60 psi shut-off86 60 psi shut-off
Efficiency 10%38 0.38 GPM per amp (13 A max)28 0.35 GPM per amp (11.5 A max)
Features 15%35 runs dry without damage, thermal protection35 runs dry without damage, thermal protection
Warranty 15%67 3-year warranty67 3-year warranty

Specifications

Jabsco Par-Max HD5Jabsco Par-Max HD4
Performance
Rated open flow5 GPM4 GPM
Shut-off pressure60 psi60 psi
Max current draw13 A11.5 A
Price per GPM$45.77$41.40
Self-priming lift8 ft8 ft
Features
ControlPressure switchPressure switch
Diaphragm chambers54
Runs dryYesYes
Thermal protectionYesYes
Build
Weight6.5 lb5.6 lb
Warranty3 years3 years

All RV water pump comparisons →