Are 'HEPA/anti-allergy filters' for a split worth it for an allergic child?
This page explains a situation in an editorial format. It is not an open discussion board or a verified customer review. Contact us on WhatsApp about your own appliance.
Drumul Taberei, Valea Argeșului street, 9,000 BTU LG, 3 years old, room of my 6-year-old daughter with mild allergic asthma. I bought a set and placed them over the original filters. Do they help? The unit seems to blow weaker. See current rates on the Prices page.
What is really happening
Allergy symptoms cannot identify the source on their own. Dust, outdoor pollen, damp surfaces and other indoor exposures may contribute. An air conditioner can cool and remove moisture, but does not diagnose an allergy or guarantee a target humidity. Inspect filters and drainage and follow the clinician’s advice for the person concerned.
- Particles of different sizes move through the air.
- The filter retains some particles, depending on its type.
- A standard filter is not equivalent to HEPA filtration or gas removal.
Particles are symbolic and not to scale.
- Fine filters (deodorising, purifying) are cleaned about every 6 months and replaced every 6 months to 3 years, per the Daikin manual. [Daikin, 2023]
- Filter efficiency and indoor particle concentration are the most important factors determining how fast the evaporator fouls. [Lawrence Berkeley National Laboratory / , 2002]
- The blower (cross-flow fan) is the most fungus-contaminated component of a split unit, more than the filter or the front of the evaporator. [Indoor Air, 2023]
- Manufacturers warn that a clogged filter reduces cooling and causes odour; LG recommends cleaning every 2 weeks for efficiency. [LG Electronics, 2020]
What we do on site
- We remove the extra filters and check whether the evaporator iced up / produced excess condensate.
- Collection cover, cleaning solution, pressure wash in place of evaporator, roller, pan.
- Sanitising solution, rinse, drying.
- Outdoor unit, washed in place.
- We show you which original filters the LG has and how to clean/replace them. See current rates on the Prices page.
What you can do yourself
- Original filters washed weekly in her room.
- A room HEPA purifier (a real, certified one) by the bed at night.
- Allergen-proof covers, humidity under 50%, louvre up.
- 'Fan' 20 minutes before shut-off.
What NOT to do
- Do not put anything over the split's original filters – no sponge, no cloth, no 'HEPA'.
- Do not buy 'silver-ion/nano' for the unit.
- Do not rely on the split as a purifier – it is a cooler, not a filter.
Prevention
Plan maintenance according to the appliance manual and what is found during inspection. Keep any medical follow-up separate; cleaning does not guarantee that symptoms will resolve.
When to call us
0764 012 943, Monday–Saturday 08:00–20:00. Drumul Taberei.
Maintenance does not replace medical care. CDC: mold and health · EPA: moisture and mould
Related threads
Dry night cough in a 3-year-old, only in the AC season
Explanations and useful checks for this situation: Dry night cough in a 3-year-old, only in the AC season
Allergist: 'dust mites or mould'. Does the AC help with one and hurt with the other?
Explanations and useful checks for this situation: Allergist: 'dust mites or mould'. Does the AC help with one and hurt with the other?
My daughter tested allergic to Alternaria and Cladosporium – what does that have to do with the unit?
Explanations and useful checks for this situation: My daughter tested allergic to Alternaria and Cladosporium – what does that have to do with the unit?
Private kindergarten with 6 units – what do I ask the management for, on behalf of the parents?
Explanations and useful checks for this situation: Private kindergarten with 6 units – what do I ask the management for, on behalf of the parents?
The outdoor unit is green with algae/mould on the north side – does it matter?
Explanations and useful checks for this situation: The outdoor unit is green with algae/mould on the north side – does it matter?
No cover, just a spray, 12 minutes, then 'let's top up the freon' — how many red flags is that?
Explanations and useful checks for this situation: No cover, just a spray, 12 minutes, then 'let's top up the freon' — how many red flags is that?
Read also
- Allergies, sneezing and irritated eyes from the air conditioner
- Air conditioning and small children
- Home humidity and air conditioning
Sources (6)
The information on this page is educational and based on cited sources; it does not replace medical advice. We do not do repairs, installation or refrigerant circuit work.