How to Use a Suction Machine at Home: A Respiratory Therapist's Complete Guide

A suction machine at home is serious medical equipment. It's prescribed for patients who cannot clear their own airway secretions — from neuromuscular disease, stroke, ALS, head and neck cancer, tracheostomy, or severe neurological impairment — and when it's needed, it's needed urgently. Using it incorrectly can cause harm: hypoxia, trauma to delicate airway tissue, infection, and in worst cases, complete airway obstruction from improper technique.

This guide is written for patients, family caregivers, and home health aides managing a suction machine outside the clinical setting. As a licensed Registered Respiratory Therapist with ICU and critical care experience, I want you to have the same foundational knowledge that clinical staff receive before managing a suction machine bedside.

What a Suction Machine Does and When It's Needed

A suction machine creates negative pressure — a vacuum — that draws secretions (saliva, mucus, blood, or other fluids) from the airway through a catheter or tip connected to a collection canister. The machine itself generates the vacuum; the catheter is the interface between the machine and the patient's airway.

Home suction is typically prescribed for patients who:

Have a tracheostomy and cannot manage secretions independently
Have neuromuscular diseases (ALS, muscular dystrophy, spinal muscular atrophy) with weakened cough
Have had a stroke affecting swallowing and airway protection
Have severe cerebral palsy or other neurological conditions impairing airway clearance
Are post-operative from head, neck, or throat procedures and temporarily cannot manage oral secretions
Have severe COPD or other pulmonary conditions with excessive secretion burden that exceeds their ability to clear through cough

For patients with COPD and excessive secretions, suction is sometimes part of a broader airway clearance strategy that may also include nebulized mucolytics, airway clearance devices, and breathing techniques. See our guides on how to use a nebulizer at home and COPD breathing exercises for the full context of secretion management.

Types of Home Suction Machines

AC-Powered Portable Suction Units

The most common home suction machines. Plugged into standard household power, they generate reliable, consistent suction pressure and are appropriate for regular use at home. Most units allow adjustment of suction pressure and come with a collection canister, tubing, and connection ports for suction catheters or Yankauer tips.

Battery-Powered Portable Units

Rechargeable battery-powered units designed for mobility — transporting patients to medical appointments, community outings, or emergency use during power outages. Battery life varies by model; most provide 45 minutes to several hours of continuous use per charge. If the patient is suction-dependent, a charged battery backup unit is essential for safety during power outages.

Manual Suction Devices

Hand-operated bulb syringes or manual pump devices that generate suction without power. Appropriate only for oral secretion management in non-critical situations (clearing saliva in a patient who is awake and not in respiratory distress). Not adequate for tracheal suctioning or urgent airway management.

Types of Suction Catheters and Tips

Device	Use	Notes
Yankauer suction tip	Oral suctioning — clearing saliva and secretions from the mouth and throat	Rigid, curved plastic tip; most commonly used for non-tracheostomy patients; reusable or disposable
Flexible suction catheter	Tracheal or nasotracheal suctioning	Soft, flexible tube passed into the airway; sized by French scale; single-use in most settings
In-line suction catheter	Suctioning through a tracheostomy without disconnecting ventilation	Specific to tracheostomized patients on home ventilators
Bulb syringe	Infant nasal suctioning; very mild oral secretion clearing	Not appropriate for tracheal suctioning

Your prescribing clinician or respiratory therapist specifies which catheter type and size is appropriate for your patient. Do not substitute a different size or type without clinical guidance.

Before You Begin: Safety Checklist

Every suction procedure should be preceded by a quick safety check:

Wash hands thoroughly — at least 20 seconds with soap and water, or alcohol-based hand rub
Assemble all equipment before starting — suction machine plugged in and tested, catheter or Yankauer tip connected, collection canister in place and not full
Verify suction pressure — set within the prescribed range (see pressure guidelines below); confirm by blocking the end of the tubing and checking the gauge
Have supplemental oxygen available if the patient uses it — suctioning interrupts oxygen delivery and can cause transient desaturation, particularly in patients with baseline hypoxemia
Position the patient — semi-upright (head of bed at 30–45 degrees or seated upright) is preferred; never suction a patient lying flat unless no alternative exists
Check the patient's baseline status — note their color, respiratory rate, and oxygen saturation before starting so you have a comparison point

If the patient is on home oxygen therapy, review our guide on COPD home oxygen therapy for context on maintaining oxygenation during airway procedures.

Suction Pressure: The Settings That Matter Most

Too much suction pressure causes airway mucosal trauma, bleeding, and atelectasis (lung collapse from over-suctioning). Too little fails to clear secretions effectively. The correct pressure depends on patient age and the type of suctioning being performed:

Patient / Procedure	Recommended Suction Pressure
Adults — oral suctioning (Yankauer)	−100 to −150 mmHg (up to −200 mmHg if secretions are very thick)
Adults — tracheal/tracheostomy suctioning	−100 to −120 mmHg
Children	−80 to −120 mmHg depending on age and clinical situation
Infants and neonates	−60 to −80 mmHg

Always start at the lower end of the pressure range and increase only if necessary to clear secretions. Your prescribing clinician may specify exact pressure settings — follow those rather than defaulting to the maximum of any range.

Step-by-Step: Oral Suctioning With a Yankauer Tip

This is the most common home suction procedure — clearing saliva and oral secretions from the mouth and throat of a patient who cannot swallow effectively.

Wash hands and don gloves.
Turn on the suction machine and verify the pressure gauge reads within the appropriate range.
Connect the Yankauer tip to the suction tubing if not already attached.
Position the patient upright or semi-upright with the head slightly tilted.
Rinse the Yankauer tip with clean water before use to confirm suction is working.
Insert the Yankauer tip into the mouth — typically along the inner cheek, then to the back of the mouth. Keep the tip moving — do not hold it stationary against tissue for more than 10–15 seconds at a time.
Apply suction while withdrawing the tip — use a rotating motion to clear secretions from different surfaces. Do not thrust the tip aggressively into the throat.
Limit each suction pass to 10–15 seconds maximum. Allow the patient to breathe (and receive oxygen if prescribed) between passes. Never suction continuously for extended periods.
Rinse the tip between passes by suctioning clean water through it to clear the tubing.
Repeat as needed until secretions are cleared and the patient is comfortable.
Turn off the machine when suctioning is complete. Rinse the tip and tubing with water. Wipe the tip with a clean cloth.
Reassess the patient — note breathing comfort, color, and oxygen saturation if monitoring.

Step-by-Step: Tracheostomy Suctioning

Tracheostomy suctioning is more invasive than oral suctioning and carries higher risk of hypoxia, airway trauma, and infection. It requires specific training from your clinical team before being performed at home. This section provides a reference overview — not a substitute for hands-on clinical training.

Wash hands and don sterile or clean gloves per your clinical team's specific protocol.
Pre-oxygenate the patient if prescribed — increase supplemental oxygen for 30–60 seconds before suctioning.
Set suction pressure to the prescribed range (−100 to −120 mmHg for most adults).
Using your dominant hand, gently insert the suction catheter into the tracheostomy tube without applying suction during insertion. Insert until you feel slight resistance, then withdraw 1 cm.
Apply intermittent suction while rotating the catheter and withdrawing it smoothly. Maximum 10–15 seconds of total suction time per pass.
Allow the patient to rest and breathe between passes — 30–60 seconds minimum. Return supplemental oxygen.
Repeat only as necessary — typically no more than 2–3 passes per suctioning episode unless secretions are excessive.
Discard the suction catheter after use — tracheostomy catheters are single-use. Do not reuse.
Reassess the patient's breathing, color, and saturation after the procedure.

Warning Signs During Suctioning That Require Stopping Immediately

SpO₂ dropping significantly below the patient's baseline (use a pulse oximeter — see our guide on choosing a home pulse oximeter)
Significant change in heart rate — either very fast (tachycardia) or very slow (bradycardia, which can occur from vagal stimulation during tracheal suctioning)
Visible blood in secretions beyond small streaks
Patient becoming more distressed, not less, during or after suctioning
Blue or gray color to lips or nail beds (cyanosis)
Patient losing consciousness or becoming unresponsive

If any of these occur: stop suctioning, apply oxygen if available, and seek emergency medical assistance (911) if the patient does not quickly return to baseline.

Cleaning and Maintenance

After Every Use

Suction clean water through the tubing to clear residual secretions from the internal tubing
Wipe the Yankauer tip (if reusable) with a clean, damp cloth; or discard if single-use
Empty or note the fill level of the collection canister — replace when 2/3 full

Daily

Wash reusable Yankauer tips with warm soapy water, rinse thoroughly, air dry
Wipe the machine exterior with a damp cloth
Check all tubing connections are secure and tubing has no cracks or occlusions

Weekly

Disinfect reusable components per manufacturer instructions (typically a vinegar-water solution soak or manufacturer-specified disinfectant)
Check the collection canister seal and replace if worn
Review the suction pressure calibration — block the end of the tubing and confirm the gauge reads within the expected range

Canister and Tubing Replacement

Collection canisters should be replaced when full (never allow to overflow) and at minimum monthly with regular use. Tubing should be replaced every 1–3 months or when cracked, discolored, or when secretions coat the interior despite regular cleaning. Browse suction machine replacement supplies and respiratory equipment in our catalog.

When to Call Your Care Team vs. Call 911

Situation	Action
Secretions significantly thicker or more abundant than usual for several days	Call physician or home health nurse — may indicate infection
Bloody secretions beyond occasional small streaks	Call physician same day
Machine not generating adequate suction despite correct setup	Check connections and canister fill; contact DME supplier if machine malfunction
Patient in acute respiratory distress during suctioning that doesn't resolve	Call 911 immediately
Patient loses consciousness during or after suctioning	Call 911 immediately
SpO₂ falls below 85% and does not recover with oxygen	Call 911 immediately

Frequently Asked Questions

How often should I suction my family member at home?

Suction frequency is determined by the patient's secretion burden, not by a fixed schedule. Suction when the patient shows signs of secretion accumulation — audible gurgling or rattling in the airway, increased respiratory effort, desaturation on the pulse oximeter, or visible secretions pooling in the mouth. Unnecessary suctioning causes airway trauma and should be avoided. Your clinical team will provide guidance on expected frequency based on the patient's specific condition.

Is it normal for suctioning to cause coughing?

Yes — insertion of a catheter into the trachea or pharynx triggers a cough reflex in most patients. This is expected and in many cases beneficial — the cough can help mobilize deeper secretions. What's not expected: severe, prolonged coughing that doesn't settle within a minute or two after suctioning, or coughing accompanied by significant distress or desaturation. Persistent severe coughing from suctioning may indicate catheter insertion too deep or too forceful — review technique with your clinical team.

My suction machine is loud. Is that normal?

Most portable suction machines produce a moderate motor noise during operation — this is normal. A significantly louder noise than usual, a rattling or grinding sound, or a notable drop in suction pressure suggests a machine problem. Contact your DME supplier for assessment and replacement if the machine is malfunctioning. A suction machine that isn't generating adequate pressure is not safe to rely on for airway management.

Can I reuse suction catheters for tracheal suctioning?

In clinical settings, suction catheters for tracheal suctioning are single-use. In the home setting, some care programs allow reuse of catheters after thorough cleaning and disinfection (rinse with sterile water, soak in hydrogen peroxide solution, air dry). However, the safest practice remains single-use per clinical guidelines. Your home health nurse or prescribing clinician should specify what reuse protocol, if any, is appropriate for your specific situation.

What should I do if the power goes out and my family member needs suctioning?

This is a critical safety planning issue for suction-dependent patients. Every household with a suction-dependent patient should have a charged battery-powered backup suction unit available at all times. Register with your local utility company as a medically dependent customer — most utilities prioritize power restoration for medically dependent households during outages. Contact your local emergency management office about medical needs registry programs in your area.

The Bottom Line

A home suction machine is life-sustaining equipment when properly used and actively dangerous when used incorrectly. Know your suction pressure settings, never exceed 15 seconds of continuous suction per pass, always pre-assess and post-assess the patient, and recognize the warning signs that require stopping and calling for help. Clean the equipment consistently, replace consumables on schedule, and have a backup power plan.

Managing respiratory care at home extends well beyond suctioning. For secretion management through breathing technique, see our guide on COPD breathing exercises. For nebulizer therapy as part of secretion management, see our guide on how to use a nebulizer at home. For monitoring your patient's oxygenation during and after suctioning, see our guide on SpO₂ levels and when to call your doctor. Browse our home respiratory and suction equipment catalog, backed by licensed Respiratory Therapist expertise.

Written by Yashil Bhatt, RRT — Licensed Registered Respiratory Therapist with ICU and critical care experience and owner of My Respiratory Company.