KNKA Energy Star 5000 Sq.Ft Dehumidifier (PD30MA-20): problems, parts and running costs
Checked: 2026-10-18
Summary
The KNKA PD30MA-20 is a budget 74-pint compressor dehumidifier sold direct at $211.99, with no independent test or owner track record behind its noise and removal claims. Running cost per year cannot be computed: the model’s wattage is not published. Below $250 it is a value pick for buyers who accept unverified reliability; above that, established brands are easier to justify.
Common problems and fixes
- Tank capacity contradicts itself on the product page — KNKA lists the tank as 1.45 gallons in its spec table and bullets but 1.06 gallons in the details block of the same page, and does not say which is right. Fix: assume the smaller figure when planning how often to empty. [2]
- Model number reused across capacities — PD30MA-20 also appears on KNKA’s 80-pint/4,500-sq-ft RainbowSense page and on a 5,500-sq-ft manual listing, so the model number alone does not identify the 74-pint unit. Fix: match the listing’s pint and sq-ft figures, not the model number. [2][5][6]
- Unit not collecting water — KNKA’s troubleshooting content points to an unenclosed room, a blocked intake or outlet, or wrong settings as the causes. Fix: keep the room enclosed and the intake and outlet unblocked. [3]
- Unit will not start — the usual cause is a full or unseated tank triggering the auto-shutoff. Fix: empty and reseat the tank. [3]
- Headline capacity is a best-case number — 74 pints/day is measured at 95°F/95% RH; the more representative basement figure KNKA itself publishes is 56 pints/day at 86°F/80% RH. Fix: size the unit off the lower figure. [2]
- 1-year warranty and thin parts channel — KNKA states a 1-year limited warranty, and no exact-model parts catalog exists; the site’s parts category lists air purifier filters and the external tank only. Fix: treat it as a budget unit with undocumented long-term support. [2][3][4]
Parts and consumables
- No exact-model parts catalog — KNKA’s parts category lists air purifier filters and the external tank only; the service card lists a D032 instruction card whose PDF was not retrievable. [2][4]
Yearly running cost
Not enough data. KNKA publishes no wattage for this model, so electricity use cannot be estimated; the only recurring-cost inputs named are the optional external tank (sold separately), electricity, and filter replacement over time, with no prices or figures given. [2]
When it is a good buy
- Above ~$250: the absence of test data and the thin support history make established alternatives easier to justify. [2][7]
Named alternatives: