Business Rental lease agreement ambiguity

[Nicole Carey]

Hello. An ideal rental for my business to grow has appeared to me. While I'm not sure if I should go into much detail about the store and what i'll sell, etc. the lease has a few ambiguous points. I was wondering if someone could give me some feedback? 

It states that 'tenant shall pay for all utilities, cinluding, but not limited to: electricity, heat, telephone, fire alarm changes, heat system maintenance costs, janitorial and cleaning charges and snow removal from xxx street in front of premises. and then in another section goes into more detail that I shall be responsible for 'normal maintenance of such items including, but not limited to heating and air conditioning systems' 

He said that the heating system is only two years old and that if something was broken beyond repair it would be on him but it is written out and sounds like there should be more detail. opinion?