Robinair CoolTech™ CT15401 is a proven 2-stage, 4 CFM vacuum pump that pulls a reliable deep vacuum for Aussie HVAC/R work. Built for licensed techs and apprentices who want faster evacuations, fewer call-backs, and a pump that just keeps going. When you’re under the pump on a hot roof, this unit is a fair dinkum time-saver.

Key features & trade benefits

• Two-stage, offset rotary vane — reaches a deep vacuum quickly so you can finish evacuation sooner.
• Iso-Valve™ isolation — shut the pump off while still connected to the system for tidy, safe workflow.
• Gas ballast — helps manage moisture so you hit targets without moisture-induced stall.
• Directed exhaust through the handle — vents away from your face on tight plant decks.
• Die-cast aluminium body — lightweight to carry, tough enough for site knocks.
• Dual-voltage 230V/115V — flexible for mixed sites and generators.
• Easy service — sight glass, front oil fill, and angled drain make oil changes quick — fewer messes, fewer delays.

Why this pump matters on real jobs

Picture this: a split install in Western Sydney, mid-summer, roof tin at 50 °C. You’ve got lines vacuumed and a site manager asking how long. With the CT15401, pull-down is smooth, the Iso-Valve™ lets you isolate and hold while you log microns, and you’re charging sooner. Too easy — and no call-back on moisture alarms.

Need leak verification or evacuation accessories? See our Vacuum Pumps & Accessories category for a complete workflow.

Pro tip

Warm, fresh oil pulls deeper. If your micron plateau stalls, isolate with Iso-Valve™, crack the gas ballast for a minute to purge vapour, then reseal and continue. Swap oil if it’s hazy — it’s the cheapest performance upgrade you’ll ever buy.

Compatibility & system info

• Refrigerants: R32, R410A, R134a, R22 and common blends (observe site rules).
• Use cases: Split systems, ducted, reach-ins, cold rooms, service & install.
• Fittings: 1/4″ MFL and 3/8″ MFL inlets for high-flow evacuation rigs.

Built for Aussie conditions

From Brisbane humidity to Sydney summer roof work, this pump’s directed exhaust and die-cast chassis keep the job moving when it’s scorching. She’ll be right.

What’s included

• 1 × Robinair CoolTech™ CT15401 Vacuum Pump
• 12-month warranty

Specifications

Warranty & returns

Backed by a 12-month warranty. For returns and delivery details, see our Shipping & Returns.

FAQs

What micron level can this pump reach?
Factory performance is a deep vacuum (see specs). Real-world results depend on clean, fresh oil, proper hoses, core removal, and a reliable micron gauge.

What fittings do I need for faster evacuation?
Use a 3/8″ vacuum hose and a vacuum-rated core removal tool to maximise flow, then measure at the system with a micron gauge.

Is the CT15401 suitable for R32/R410A installs?
Yes — it’s a general HVAC/R pump. Follow site safety and Australian handling rules.

Any quick maintenance tips?
Change oil after moisture-heavy jobs or when it looks cloudy. Keep the intake filter clean and store the pump upright.

Related products

• Add a micron gauge to verify your deep vacuum accurately — essential for sign-off and fewer call-backs.
• Keep fresh oil on hand — the cheapest way to pull deeper, faster.
• Upgrade to a 3/8″ vacuum hose — bigger bore, quicker evacuation.
• Use a core removal tool — maintain full flow while you pull down.