{qaStaHvIS jar bIr, jIHvaD pagh qay'wI' tu'lu'. 'a qaSchoHtaHvISDI'
jar tuj, ghe''or rur yaHwIj}.

My intended meaning was "while the cold months were happening, for me
there was no problem, but while the hot months begun to happen my
office resembled hell".

Ouch! You've got two type 9 suffixes on that second qaS, and most of those suffixes aren't necessary anyway.

Does your office resemble Hell only when the hot months start to happen? Does it resemble Hell at the time the hot months happen? No, it resembles Hell while the hot months happen. Use only qaStaHvIS.

You can also improve the bit with qay' like so: qaStaHvIS jarmey bIr jIHvaD qay'be' during the cold months, they [the cold months] were not a problem for me. Without an indication to the contrary, it is most natural to assume the subject of the first clause is also the elided subject of the second clause.

-- 
SuStel
http://trimboli.name