How to Check Air Purifier Performance with Temtop S1-UP Malaysia

How to Check Air Purifier Performance with Temtop S1-UP Malaysia

You have switched on the air purifier.

The fan is running.

The room feels comfortable.

But is the purifier actually reducing PM2.5?

How quickly should the particle reading decrease?

Where should you place the air-quality monitor?

Why does PM2.5 sometimes remain high even when the purifier is operating?

The Temtop S1-UP can help users observe PM2.5 before and after operating an air purifier.

It displays:

PM2.5

AQI

Temperature

Humidity

This makes it suitable for general air-purifier observation in Malaysian:

Homes.

Bedrooms.

Offices.

Classrooms.

Clinics.

Shops.

Meeting rooms.

However, the monitor must be positioned and used correctly.

Placing it directly beside the purifier outlet may produce an impressive reading that does not represent the overall room condition.

This guide explains how to use the Temtop S1-UP for a more meaningful air-purifier comparison.

What Can the Temtop S1-UP Tell You?

The S1-UP can help answer questions such as:

Is room PM2.5 decreasing after the purifier starts?

How long does the reading take to improve?

Does PM2.5 increase when the door opens?

Does the purifier maintain a lower reading?

Which room has the highest particle level?

Does PM2.5 return after the purifier is switched off?

It provides useful information for general screening and trend observation.

However, it does not directly tell you:

The purifier’s certified filtration efficiency.

The purifier’s exact Clean Air Delivery Rate.

The remaining filter life.

The source of every particle.

Whether the purifier removes gases or odours.

Whether the room meets a formal indoor-air-quality standard.

The S1-UP monitors the surrounding air.

It does not directly test the internal condition of the purifier.

What Does an Air Purifier Normally Reduce?

A particulate air purifier is commonly used to reduce airborne particles such as:

PM2.5.

Dust.

Smoke particles.

Haze particles.

Some pollen.

Other particles captured by its filtration system.

Actual performance depends on:

Purifier design.

Filter type.

Room size.

Operating speed.

Filter condition.

Room leakage.

Particle sources.

Air circulation.

The Temtop S1-UP helps users observe whether the room PM2.5 trend changes after the purifier starts.

Step 1: Select One Room

Begin with one room.

Suitable examples include:

Bedroom.

Living room.

Home office.

Meeting room.

Classroom.

Clinic waiting room.

Do not move the purifier or monitor between several rooms during the same comparison.

The objective is to create a reasonably consistent test condition.

Step 2: Choose a Representative Monitor Position

Place the S1-UP in the occupied area of the room.

The selected location should represent the air that people generally experience.

Avoid positioning the monitor:

Directly beside the purifier outlet.

Immediately in front of the purifier intake.

Under an air-conditioning vent.

Beside an open window.

Next to an external door.

Above cooking equipment.

Near a humidifier.

In direct sunlight.

Beside steam or water.

Why Should the Monitor Not Be Beside the Purifier Outlet?

Air leaving the purifier may have a lower particle concentration than the rest of the room.

A monitor placed directly in the clean-air discharge may show the purifier outlet condition rather than the overall room condition.

This can make the result appear better than it really is for occupants elsewhere in the room.

For room-level monitoring:

Place the S1-UP away from direct purifier airflow.

Keep it in a representative occupied area.

Step 3: Record the Initial PM2.5 Reading

Before switching on the purifier, record:

PM2.5.

AQI.

Temperature.

Humidity.

Time.

Room.

Door condition.

Window condition.

Air-conditioner status.

Number of occupants.

Any cooking or cleaning activity.

This becomes the baseline.

Example Baseline Record

Time: 7:00 PM

Room: Main bedroom

PM2.5: Record displayed reading

AQI: Record displayed condition

Temperature: Record displayed reading

Humidity: Record displayed reading

Door: Closed

Window: Closed

Air conditioner: On

Air purifier: Off

Occupants: Two

A baseline allows you to compare the room before and after purifier operation.

Step 4: Switch On the Air Purifier

Switch on the purifier without changing the other main conditions.

Keep the following consistent where possible:

Monitor position.

Purifier position.

Door condition.

Window condition.

Air-conditioning status.

Room activity.

Purifier speed.

If you change several conditions simultaneously, you may not know what caused the PM2.5 difference.

Step 5: Observe the PM2.5 Trend

Record the reading at consistent intervals.

For example:

Before purifier operation.

After 10 minutes.

After 20 minutes.

After 30 minutes.

After 60 minutes.

The exact interval may be adjusted according to the room and application.

The important point is to use a consistent method.

Observe whether PM2.5 is:

Decreasing steadily.

Decreasing slowly.

Remaining stable.

Increasing.

Fluctuating.

Do not judge the purifier based only on one momentary reading.

Step 6: Continue Monitoring After Improvement

A purifier should not only create a short-term decrease.

Users may also want to observe whether it can maintain lower PM2.5 while:

People remain in the room.

The air conditioner operates.

Doors open occasionally.

Outdoor haze continues.

Normal room activity takes place.

A room may initially improve and then experience another increase when polluted air or a new particle source enters.

Why Is PM2.5 Not Decreasing?

If PM2.5 remains high, several possible causes should be checked.

1. The Purifier Is Too Small for the Room

A purifier designed for a small bedroom may not be sufficient for a large living room, training room or open office.

The room may contain too much air volume for the purifier to clean quickly.

Check the purifier manufacturer’s recommended room coverage and operating conditions.

Do not assume that one small purifier is suitable for every room.

2. The Purifier Is Running at a Low Speed

A low or sleep mode may provide quieter operation but move less air.

If PM2.5 is high, a higher fan setting may be needed initially.

Users can compare:

Low speed.

Medium speed.

High speed.

Keep the monitor position and room conditions consistent during the comparison.

3. The Filter Requires Attention

A dirty, blocked, damaged or incorrectly installed filter may affect purifier performance.

Check:

Filter installation.

Protective packaging removal.

Filter condition.

Replacement indication.

Maintenance instructions.

Correct filter type.

Always follow the purifier manufacturer’s maintenance recommendations.

4. The Windows or Doors Are Open

If outdoor PM2.5 is high, open windows and doors may continuously introduce more particles.

The purifier may be operating correctly but cannot reduce the room level because polluted air keeps entering.

Record whether:

Windows are open.

The bedroom door is open.

The main entrance opens frequently.

The room connects to another polluted area.

A purifier works within the environment it is given.

5. There Is an Ongoing Indoor Particle Source

Indoor PM2.5 may remain high because particles are still being produced.

Possible sources include:

Cooking.

Smoking.

Burning incense.

Candles.

Cleaning.

Dusting.

Vacuuming.

Aerosol use.

Renovation work.

Nearby construction dust entering the room.

The purifier may reduce particles while the activity simultaneously produces new ones.

6. The Monitor Is Too Close to the Pollution Source

A monitor positioned beside a stove, smoking area or open window may show a local high concentration.

This may not represent the overall room.

Choose a representative occupied position unless your purpose is specifically to investigate the local source.

7. The Purifier Position Restricts Airflow

A purifier placed against a wall, behind furniture or inside a confined corner may not circulate air effectively.

Check the purifier’s recommended placement.

Do not block:

Air intake.

Clean-air outlet.

Required clearance.

Good room circulation is important for distributing air through the filtration system.

8. The Room Is Connected to a Larger Space

A purifier may be installed in one area while air moves continuously between:

Living room and dining room.

Bedroom and corridor.

Office and reception.

Classroom and hallway.

Open-plan work areas.

The effective space may be much larger than the room name suggests.

Consider the entire connected air volume.

9. Outdoor Haze Is Continuously Entering

During severe haze, small openings and frequent door movement may allow outdoor particles to enter.

The purifier may lower PM2.5, but infiltration may prevent the reading from reaching a very low level.

Observe the trend:

Does PM2.5 decrease when the room remains closed?

Does it increase when the door opens?

Does the purifier recover the room afterward?

This pattern can be more informative than expecting one perfect number.

10. The Reading Has Not Stabilised

Air quality does not always change immediately.

The purifier needs time to process room air.

The S1-UP also needs time to respond to the surrounding environment.

Allow a suitable monitoring period before reaching a conclusion.

Why Does PM2.5 Increase Again?

PM2.5 may increase again after initially decreasing because:

The door opened.

A window opened.

Someone started cooking.

People entered from outdoors.

Cleaning disturbed dust.

The purifier speed was reduced.

The purifier was switched off.

Outdoor haze worsened.

Air moved in from another room.

The increase does not automatically mean the purifier has failed.

Review what changed in the environment.

Why Does the Purifier Display Differ from S1-UP?

Many air purifiers include their own particle display.

The purifier and S1-UP may show different readings because of:

Different sensor designs.

Different sensor positions.

Different air-sampling conditions.

Different response times.

Different algorithms.

The purifier sensor being located near its air intake.

The S1-UP being located elsewhere in the room.

This does not automatically mean either instrument is faulty.

To understand the difference:

Keep both devices in stable locations.

Avoid direct outlet airflow.

Allow sufficient operating time.

Observe whether both readings generally rise or fall together.

Focus on the trend as well as the exact number.

Should the S1-UP Be Placed Beside the Purifier Sensor?

Not necessarily.

The purifier’s built-in sensor may be close to the unit’s intake, while the S1-UP should ideally represent the occupied area.

Placing both sensors together may help with a controlled comparison, but it does not necessarily show the condition across the whole room.

For everyday monitoring, the S1-UP should be positioned where its reading is useful to the occupants.

Can the S1-UP Test HEPA Filter Efficiency?

Not directly.

A formal filter-efficiency test normally requires controlled upstream and downstream particle measurements and an appropriate test method.

Placing the S1-UP in a room only shows the surrounding PM2.5 condition.

It does not directly certify:

HEPA grade.

Filter efficiency.

Leakage performance.

Clean Air Delivery Rate.

Compliance with a filtration standard.

Use the S1-UP for general room-level observation, not laboratory filter certification.

Can S1-UP Tell You When to Replace the Filter?

Not directly.

A slow improvement may be related to the filter, but it may also be caused by:

Room size.

Low purifier speed.

Open doors.

Outdoor particle entry.

Incorrect purifier placement.

Ongoing indoor sources.

Follow the purifier manufacturer’s replacement schedule and filter indicator.

The S1-UP may provide supporting observations, but it cannot directly measure the remaining filter life.

Does an Air Purifier Reduce CO2?

A normal particulate air purifier should not automatically be expected to reduce CO2.

Its main role may be reducing airborne particles.

CO2 is related to factors such as:

Occupancy.

Fresh-air exchange.

Ventilation.

A room may show:

PM2.5 decreasing

while:

CO2 increases

at the same time.

There is no contradiction.

The purifier may be removing particles while occupants continue producing CO2 in a closed room.

The S1-UP does not measure CO2.

Choose a CO2-capable monitor if ventilation awareness is also required.

Does an Air Purifier Remove TVOC or Formaldehyde?

Do not assume that every purifier removes every gas or chemical pollutant.

Performance depends on:

Filter design.

Activated-carbon quantity and condition.

Pollutant type.

Concentration.

Airflow.

Room conditions.

The S1-UP does not measure TVOC or formaldehyde.

Therefore, it cannot confirm whether those pollutants have decreased.

If TVOC or HCHO is the main concern, use an instrument designed for that measurement.

Using S1-UP in a Bedroom

A bedroom comparison may include:

Record PM2.5 before purifier operation.

Close the external window.

Keep the door condition consistent.

Switch on the purifier.

Keep the S1-UP away from the clean-air outlet.

Monitor the change.

Continue observation overnight if required.

Record temperature and humidity as additional room information.

If CO2 is also a concern, use an appropriate CO2 monitor.

Using S1-UP in a Living Room

Living rooms can be more difficult because they may connect to:

Dining areas.

Kitchens.

Corridors.

Staircases.

Main entrances.

A purifier may need to clean a larger effective space than expected.

When monitoring:

Record cooking activity.

Record door-opening activity.

Keep the monitor in a consistent position.

Avoid placing it directly beside the kitchen or purifier outlet.

Observe PM2.5 before, during and after purifier operation.

Using S1-UP in an Office

For an office comparison, facility teams can record:

Room name.

Room size.

Purifier model.

Purifier speed.

PM2.5 before operation.

PM2.5 after operation.

Number of occupants.

Door and window condition.

Air-conditioning status.

The same purifier may perform differently in a small manager room and a large open office.

Evaluate each space according to its actual conditions.

Using S1-UP in a Classroom

Classroom PM2.5 may be affected by:

Open windows.

Frequent door movement.

Nearby traffic.

Outdoor haze.

High activity levels.

Cleaning.

A purifier comparison should be performed with careful notes about occupancy and room conditions.

The S1-UP can show PM2.5 trends, but it does not measure classroom CO2.

For a broader classroom assessment, both particle and ventilation-related measurements may be needed.

ECO Mode or A Mode for Air Purifier Testing?

The S1-UP offers two operating modes.

ECO Mode

ECO Mode prioritises longer battery endurance.

According to Temtop, standby duration may reach approximately 60 days, depending on use and battery condition.

This mode may be suitable for longer general observation.

A Mode

A Mode is more suitable when you want more immediate data while actively checking changes.

According to Temtop, standby duration may reach approximately 20 days, depending on use and battery condition.

For a short before-and-after air-purifier comparison, A Mode may be the more practical choice.

For longer general room monitoring, ECO Mode may be considered.

Simple Air Purifier Test Procedure

Use the following procedure for a basic room comparison:

Before the Test

Select one room.

Close or record the window condition.

Record the door condition.

Stop unnecessary particle-producing activities.

Place the S1-UP away from direct airflow.

Baseline

Keep the purifier off initially.

Allow the S1-UP reading to stabilise.

Record PM2.5, AQI, temperature and humidity.

Purifier Operation

Switch on the purifier.

Use a consistent speed.

Do not move the monitor.

Do not change the main room conditions.

Observation

Record readings at consistent intervals.

Observe the overall PM2.5 trend.

Note any door opening or room activity.

Interpretation

A falling trend suggests that room PM2.5 is reducing under those conditions.

A stable or rising trend requires checking the purifier, room and ongoing particle sources.

Air Purifier Monitoring Mistakes to Avoid

Mistake 1: Placing the Monitor at the Purifier Outlet

This measures a local clean-air stream rather than the overall room.

Mistake 2: Moving the Monitor During the Test

A change in position can affect the reading.

Mistake 3: Opening and Closing Windows Repeatedly

This changes the particle-entry condition.

Mistake 4: Cooking During the Comparison

Cooking can introduce new airborne particles.

Mistake 5: Comparing Different Purifier Speeds Without Recording Them

Fan speed can materially affect the result.

Mistake 6: Expecting Immediate Results

Room air requires time to circulate through the purifier.

Mistake 7: Judging Performance from One Number

Observe the pattern over time.

Mistake 8: Assuming PM2.5 Represents Every Pollutant

The S1-UP does not measure CO2, TVOC or formaldehyde.

Temtop S1-UP vs S1+ for Air Purifier Monitoring

Choose the S1-UP when you want:

Direct on-screen PM2.5 readings.

Simple standalone operation.

No App requirement.

Portable room-to-room use.

Choose the S1+ when you want:

Bluetooth App connectivity.

Smartphone-based monitoring.

A more connected approach.

Both models can support general PM2.5 observation.

The primary difference is the connectivity requirement.

Temtop S1-UP vs P600 for Air Purifier Checking

Choose the S1-UP when you want:

A compact room monitor.

PM2.5 and AQI.

Temperature and humidity.

Longer stationary monitoring.

Choose a particle-focused instrument such as the P600 when you require:

PM2.5 and PM10.

Portable particle-focused spot checking.

A different style of measurement workflow.

The correct choice depends on whether you want a simple room monitor or a more particle-focused handheld instrument.

When Should You Consider Another Instrument?

Consider another monitor when:

You need CO2.

You need PM10.

You need TVOC.

You need formaldehyde.

You need data export.

You require professional particle investigation.

You need regulatory testing.

You need formal filter-efficiency testing.

The S1-UP is best used for practical room-level PM2.5 observation.

Temtop S1-UP Air Purifier Monitoring Summary

The Temtop S1-UP can help Malaysian users answer a practical question:

“Is PM2.5 decreasing after I switch on the air purifier?”

For useful results:

Place the monitor away from direct purifier airflow.

Record the initial PM2.5 condition.

Keep the room arrangement consistent.

Record the purifier speed.

Observe the trend over time.

Note doors, windows, occupancy and indoor activities.

If PM2.5 does not decrease, check:

Room size.

Purifier speed.

Filter condition.

Purifier placement.

Open doors and windows.

Ongoing particle sources.

Outdoor haze entry.

Do not expect the S1-UP to confirm filter certification or measure CO2, TVOC or formaldehyde.

Use it for what it does best:

Observing how room PM2.5 changes before and after air-purifier operation.

Contact MTM Precision

Contact MTM Precision for Temtop S1-UP Malaysia price and quotation, or for assistance selecting a Temtop monitor for air-purifier observation, PM2.5, haze, bedrooms, offices and classrooms.

MTM Precision Sdn Bhd

Showroom & Service Centre:

No. 29-1 & 29-2, Jalan Bandar 18,

Pusat Bandar Puchong,

47160 Puchong, Selangor, Malaysia

Tel: 03-8080 7172

WhatsApp: +6016-660 7346

Email: mtmpre@yahoo.com

Website: www.mtmpre.com.my