4.5CFM Single-Stage Rotary Vane Vacuum Pump 1/3HP
Slow, Weak Evacuation
A leftover HVAC system full of moisture and air ruins refrigerant charges.
Underpowered pumps take forever to pull a deep vacuum and never quite finish the job. That means callbacks, wasted refrigerant, and systems that fail early.
See how it handles thatDescription
This single-stage rotary vane vacuum pump is engineered for HVAC and refrigeration applications. With a displacement of 4.5 cubic feet per minute (CFM) and an ultimate vacuum rating of 5 PA, it delivers reliable performance for air conditioning system evacuation and maintenance. The 1/3 horsepower motor provides consistent operation for both professional technicians and serious DIY enthusiasts working on refrigerant systems.
The rotary vane design ensures smooth, oil-sealed operation that minimizes noise and vibration while maintaining steady vacuum levels throughout the pumping cycle. This pump is compatible with standard evacuation hoses and fittings used in HVAC work, making it a practical addition to any refrigeration service toolkit. Its compact construction allows for easy storage and transport between job sites.
Whether you're performing routine maintenance, recovering refrigerant, or degassing systems, this vacuum pump handles the essential work of removing air and moisture from closed-loop circuits. The durable cast iron and aluminum construction supports long-term use in workshop or field environments.
- 4.5 CFM displacement suitable for mid-sized HVAC systems
- 5 PA ultimate vacuum rating for effective evacuation
- 1/3 HP motor delivers consistent pumping power
- Oil-sealed rotary vane mechanism reduces noise and extends component life
- Standard connection ports compatible with common HVAC fittings
Specs
All specifications
- Material
- Cast iron and aluminum
- Compatibility
- Standard HVAC fittings
Shipping & Returns
What it solves
Reach 5 PA Vacuum, Every Job
This single-stage rotary vane pump delivers 4.5 CFM displacement and a 5 PA ultimate vacuum rating, driven by a 1/3 HP motor for consistent pull-down on mid-sized HVAC systems.
The numbers that matter
4.5 CFMDisplacementDeep Vacuum for Clean Systems
The 5 PA ultimate vacuum rating removes air and moisture from closed-loop refrigerant circuits. That means fewer contaminants left behind after evacuation.
1/3 HPPowerQuiet, Oil-Sealed Operation
The oil-sealed rotary vane mechanism reduces noise and vibration during pumping cycles. It's built to run steady through full evacuation without excess rattle.
5 PAUltimate VacuumBuilt to Last on the Job
Cast iron and aluminum construction handles repeated use in workshop or field conditions. The single-stage design keeps internal wear low over time.
Fits Standard HVAC Setups
Standard connection ports work with common evacuation hoses and fittings already in your toolkit. No adapters or special hardware needed for typical HVAC work.
How it works
Connect Hoses
Attach standard HVAC hoses to the pump's connection ports and the refrigerant system.
Run the Pump
Power the 1/3 HP motor and let it pull the system down to 5 PA.
Disconnect and Store
Once evacuation is complete, disconnect hoses and store the compact pump for the next job.
Pump in Detail
See the difference
| This one | Basic hand-crank vacuum pump | |
|---|---|---|
| Displacement | ✓4.5 CFM motor-driven | Manual, inconsistent flow |
| Ultimate vacuum | ✓5 PA rating | No standardized vacuum rating |
| Operation | ✓Oil-sealed rotary vane, steady cycle | Manual pumping, uneven pressure |
| Construction | ✓Cast iron and aluminum | Lightweight plastic components |
30-day returns, no drama
Try it for 30 days. If it is not right, email support@shoploomo.com with your order number and send it back unused in its original packaging for a full refund. Free shipping on every order, delivered in 5–8 business days from US warehouses.
Got questions?
Will this pump work on my HVAC system?
It's sized for mid-sized HVAC systems with 4.5 CFM displacement and connects using standard HVAC fittings and evacuation hoses.
Is it loud when running?
The oil-sealed rotary vane mechanism is designed to minimize noise and vibration during operation.
How durable is the construction?
The pump body is made of cast iron and aluminum, built for long-term use in workshop or field environments.
What kind of vacuum level can I expect?
The pump reaches an ultimate vacuum rating of 5 PA, suitable for evacuating and degassing closed-loop refrigerant circuits.
How fast will this ship?
Free shipping on every order, delivered in 5–8 business days from US warehouses, fully tracked.
Evacuate Systems Right, Every Time
Get consistent vacuum performance built for HVAC and refrigeration work.
Free shipping on every order · 5–8 business days · 30-day returns
What owners say
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Home Appliances
Quietly does the work
- Quietly does the work
- Fits real homes
- Less chores, more evening
