Marine HVAC Coolant Pump
PM500 (115V)
Fully submersible 500 GPH marine HVAC coolant pump with run-dry protection. Direct March LC-3CP-MD replacement. ETL listed, ISO 8846. Ships same day.
Drop-In Replacement for March LC-3CP-MD (115V)
Drop-in compatible. Same mounting pattern, same connections - no modifications needed.
Key Features
- Run-dry protection
- Thermal overload protection
- ISO 8846 ignition protected
- Fully submersible
- Sealless magnetic drive
- Epoxy-encapsulated motor
Technical Specifications
Performance
Electrical
Physical
Connections
Identification
Overview
The KoolAir PM500-115V is a fully submersible 500 GPH magnetic drive seawater pump designed for marine air conditioning and fountain applications. Its sealless design eliminates shaft seal leaks and maintenance.
Key Benefits
- Run-Dry Protection - Carbon bushing design allows the pump to survive clogged strainers without damage.
- Thermal Overload Protection - Automatic shutoff prevents motor burnout.
- Fully Submersible - Epoxy-encapsulated motor rated for below-waterline installation.
- ISO 8846 Ignition Protected - Safe for use in enclosed engine compartments.
- Sealless Magnetic Drive - No shaft seal to leak or replace.
Drop-In Replacement
Directly replaces the March LC-3CP-MD (115V). Same mounting pattern, same connections - no modifications needed.
Applications
PM500 (115V) Service & Maintenance Videos
Watch step-by-step guides for servicing the PM500 (115V). These videos cover complete disassembly and reassembly procedures to help you maintain peak pump performance.
How to Disassemble a PM500 KoolAir Pump
How to Reassemble a PM500 KoolAir Pump
Customer Reviews
Marty Smith
While in Guatemala for hurricane season, AC pump started failing. Thank you for the extra effort to search the warehouse and find the last one! Arrived in a week and we are back to cool air!
Mariana Pezzulo
We have been replacing the March air cooled for this model and has worked fine for the last 5 years. 3 pumps on board.
Jeff Rickels
There are too many things that can go wrong when you're on the water, you need to mitigate risk and making the decision to implement a KoolAir pump helps me do just that.
Shipping & Returns
Orders placed before 2:00 PM EST ship same business day. Standard delivery takes 3-5 business days; express delivery takes 1-3 business days.
Shipping cost is calculated at checkout based on your delivery address. For full details, see our shipping policy.
Not the right fit? Returns are accepted within 30 days. See our returns and refunds policy for details.