No there is no age limit for appearing for HPCET. 

Other criteria for HPCET are 

Following criteria had to be met if the candidates wished to appear in the HPCET 2019 examination.

• Candidates must have passed their Class 12 th or equivalent from a recognized college or board
• Candidates must have secured at least 45% marks in the qualifying examination. 5% relaxation is given to the candidates belonging to the reserved categories
• Candidates must have Physics and Mathematics as a compulsory subject along with one other – Chemistry/Biology/Biotechnology/Technical Vocational Subjects

Important: If the aggregate percentage for candidates is coming in the fraction, in such case, the candidate must round off their percentage to the nearest percentage of marks. For example, candidates having aggregate marks in the range of 44.01% - 44.49%, it shall be rounded off to 44% and 44.50% - 44.99% shall be rounded off to 45%.