AIR CONDITIONING • SERVICES & GUIDESBucurești & Ilfov · 0764 012 943
RO 0764 012 943

With asthma, does the cold from the unit matter more, or the mould in it?

Editorial guide · Updated 18 September 2026

In short: For a person with asthma or another respiratory condition, comfort settings and exposure concerns should be discussed with their clinician. A change in symptoms does not establish that the appliance is the cause. Visible dampness, mould, an unusual smell or blocked filters justify a technical inspection, separately from medical care.

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.

Situation discussed

Militari, Dezrobirii street, 1986 block. My husband has allergic asthma (mites, mould), I do not. We argue over the remote: he wants 22 °C 'or he cannot breathe', I say the cold makes him cough. The unit is a 5-year-old 12,000 BTU Midea, never sanitised. What is the actual problem – the temperature or the unit?

Editorial explanation · Revizie AC

What is really happening

For a person with asthma or another respiratory condition, comfort settings and exposure concerns should be discussed with their clinician. A change in symptoms does not establish that the appliance is the cause. Visible dampness, mould, an unusual smell or blocked filters justify a technical inspection, separately from medical care.

Explanatory diagramTwo assessments with different roles
Two assessments with different roles
  1. The unit and indoor environment: technical inspection, moisture, deposits and maintenance.
  2. Symptoms and diagnosis: assessment by a medical professional.

A unit problem does not establish the cause of an illness. Maintenance does not replace medical care.

What the studies say
  • The fungal genera dominant in split units – Cladosporium, Alternaria, Aspergillus – are recognised triggers of allergic asthma. [Building and Environment, 2025]
  • Mould odour in the home is associated with about 73% higher risk of developing asthma (OR 1.73), more than visible mould (OR 1.29). [PLOS ONE, 2012]
  • Relative humidity above about 50% increases house dust mite levels; a clean air conditioner helps keep humidity below this threshold. [WHO / NCBI Bookshelf, 2009]
  • Daikin Romania and INSP recommend setting the unit at 25–27 °C and a maximum 6–10 °C difference from outdoors, for comfort, health and lower consumption. [Daikin România, 2024]

What we do on site

  1. Collection cover; cleaning solution; pressure wash in place of evaporator, roller, pan.
  2. Sanitising solution, extra rinse, drying on 'Fan'.
  3. Outdoor unit, washed in place.
  4. We measure bedroom humidity before/after and run a test: 25 °C, 30 minutes, with your husband in the room. See current rates on the Prices page.

What you can do yourself

  • The remote compromise: Dry 30 minutes in the evening, then Cool 25 °C, low speed, louvre up, Fan 20 minutes at the end.
  • Hygrometer on the nightstand – target 45%.
  • Allergen-proof covers, bedding at 60 °C.
  • Filters every two weeks.

What NOT to do

  • Not 22 °C with a jet at the bed – a guaranteed physical trigger.
  • No sprays, air fresheners, 'ion purifiers' in the bedroom.
  • Do not postpone sanitising because 'he says it is fine like this'.

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. Militari.

Man at his desk rubbing irritated eyes under the air conditioner
Man at his desk rubbing irritated eyes under the air conditioner

Maintenance does not replace medical care. CDC: mold and health · EPA: moisture and mould

Ask your question Report an error
← Asthma for 20 years, night attacks only in summer – is the bedroom unit a suspect?Ex-smoker with chronic bronchitis – I cough harder in the room with the AC →

Related threads

Read also

Sources (10)

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.