HVAC validation

Is there any separate validation for heating systems in HVAC?

Well - that depends, is the most correct answer, actually. .-)

What are your requirements? What’s the heating used for? Is it critical to the process/product, or “just” for comfort, so to speak?
Understanding your needs is the starting point, so that you can decide what to validate and to what extent.
A good way to get more understanding would be to get the new Easy to understand guideline for HVAC validation from Ask About Validation

桐城炙醇信息技术有限公司…?id_product=21

/Helena