in paki market, differentiating b/w 1 dc, 3dc and 5dc is real pain as brands simply don't mention such stuff on websites/product pages, there are only absurd baseless claims everywhere like 60% or 75% energy saving or 7 star energy ratings which doesn't even exist globally. for example, assume 1838s is 5dc, on website there's nowhere mentioned that it's 5dc and only 7 star rating and 75% energy saving is mentioned, that's the worst part, manufacturers are selling acs like Lahori coolers, no technical specs on sites other than BTU or even that's missing in some cases like kenwood, and further more, misleading marketing like adding T3 in model name with t1 compressor or mentioning that ac is t3 compatible or like full cooling up to 63 degree C and no btus mentioned at 63C (because even t3 (tropical) compressors deliver full btus till 35C and onwards btus start declining, and at 60C even t3 compressors deliver max 55-60% of rated btus which these ac manufacturers skip in brochures/websites)
easiest way of differentiating b/w 1dc and 3dc is, checking outdoor fan motor by opening top cover or front grill, you can read specs on sticker, ac with dc fan motor will be 3dc and one with ac motor will be 1dc, regarding 3 dc vs 5dc, seems like poora indoor dissemble kr k vane motor check krni pray gi 
PS: even T3 acs don't deliver full btus on 50-52C, just for reference, in other regions where ac manufactures mention T1 and T3 specs seaprately, like power consumption, COP, EER, BTUS, T3 btus are always lower than T1 btus, usually approx 85-95% of T1 btus
(those who are confused with t1 and t3 btus, actually there's nothing like t3 or t1 compressor, it's climate type for which ac is designed and different specs are mentioned under t1 and t3 climate because ac EER and COP is directly affected by outside temperature)
sharing pics for reference
