HVACopediaAll brands · General troubleshooting
Low output
What is going on
Possible causes and checks for: low output.
Likely causes
- Mineral-clogged plates/pad/nozzle, worn drum sleeve, scaled float, hard water, supply air too cool (evaporative/atomizing on heat pump)
Check in this order
- Clean/replace media, descale, filter/soften water, consider steam type. pp.955–958 [929–932]
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Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.