SPECSTAR HVAC Vacuum Pump 1/4 HP 3.5 CFM 110V — Single-Stage Rotary Vane, Fast 2 Pa Pull-Down

The SPECSTAR 110V 1/4 HP 3.5 CFM single-stage rotary vane vacuum pump is a compact, service-grade unit built to evacuate HVAC and refrigeration systems quickly and reliably.

This pump combines a 1/4 HP (180W) motor running at 1728 r/min with a 3.5 CFM flow rate to reach deep vacuums — down to about 2 Pa — in minutes. Designed for field technicians and workshop users, the SPECSTAR model balances performance, portability and protective features so you can evacuate lines, remove moisture and prepare systems for refrigerant charging with confidence.

How fast and deep can this pump evacuate an HVAC system?

The SPECSTAR pump is engineered for rapid pull-down and measurable ultimate vacuum. Its 3.5 CFM pumping capacity and 1/4 HP motor typically achieve an ultimate vacuum near 2 Pa in roughly three minutes under normal conditions.

• 3.5 CFM flow rate for quick evacuation
• 1/4 HP (180W) motor at 1728 r/min
• Ultimate vacuum ~2 Pa, typical pull-down ~3 minutes
• Integrated motor current protection prevents overheating

Which refrigerants and service tasks is it suitable for?

SPECSTAR supports common service refrigerants and a range of maintenance jobs beyond HVAC. It works with R134a, R12, R22 and R502; R410A can be used when fitted with a 5/16-inch adapter (adapter not included).

• Fittings: 1/4-inch SAE and 1/2-inch ACME inlets for broad compatibility
• Use cases: A/C evacuation, vacuum packaging, oil distillation, resin degassing
• Adapter option: 5/16-inch for R410A compatibility (sold separately)

What safety and durability features protect the pump during use?

Durability and safer operation are built into the SPECSTAR design to lower the risk of damage and reduce maintenance. The unit uses a die-cast aluminum housing and a four-pole pure copper motor for ruggedness, while motor current protection guards against overload and phase loss.

• One-piece die-cast aluminum body for impact resistance
• 304 stainless steel coarse inlet filter catches particles
• Cotton-layer exhaust filter captures oil mist and impurities
• Built-in cooling fan and non-slip base improve stability

How easy is it to operate and service day-to-day?

SPECSTAR focuses on real-world usability with features that simplify handling, monitoring and oil changes. The pump is compact and lightweight, with an ergonomic handle, clear oil sight window and dual filling ports for fast checks and service.

• Ergonomic grip and simple ON/OFF switch for fast operation
• Dual oil fill ports plus bottom drain for quick oil changes
• Low-noise operation around 65 dB for comfortable use
• Clear viewing window to monitor oil level at a glance

Who is this for: The SPECSTAR 110V 1/4 HP pump is aimed at HVAC technicians, refrigeration service shops, and advanced DIYers who need a portable, dependable vacuum source for evacuating systems, preparing lines for recharge, and performing small-scale vacuum tasks like oil distillation or resin degassing. It’s best when you require a balance of fast pull-down performance, protection features, and straightforward maintenance in a compact footprint.