Whatever your comfort needs may be, our NATE licensed techs can handle them all. We additionally stand behind our work, and we’re assured that after our first service with you, there’s nobody else that you’d need to rely on for all your heating, cooling, and plumbing needs. Get in touch with us now so we are ready to schedule a convenient appointment time. Each volume of the ASHRAE Handbook is up to date every 4 years. The Fundamentals Handbook contains heating and cooling calculations. Other helpful reference materials embrace objects from SMACNA, ACGIH, and technical trade journals.