HVAC Basics and Design

  • All customized analysis and design services will adhere to the installation and operating objective of SIMPLE SYSTEMS PERFORM RELIABLY and are ECONOMICAL.
    • OVER-Sizing an HVAC system is detrimental to energy use, comfort, Indoor Air Quality, building sustainability and equipment durability. These associated characteristics are generated by systems that “short cycle” in the heating and/or cooling modes. Best operational efficiency and effectiveness is maintained by a heating and cooling system OPERATING FOR LENGTHY PERIODS to address the constantly varying loads. ANALOGY : An automobile driving at a steady speed on the highway achieves best fuel economy, while speeding up and slowing down creates undue wear and tear on the engine and braking systems, and reduces fuel efficiency.
    • RIGHT SIZING of the HVAC system begins with an accurate assessment of the heating and cooling loads within a space. The values determined by the heating and cooling load calculation process provides requirements for the equipment selection and the duct design needed to deliver conditioned air to the rooms of the building to meet the occupant’s comfort expectations.
    • The best practices for ventilation and Indoor Air Quality ( IAQ) will adhere to the ASHRAE 62.2 -2013 residential criteria and the ASHRAE 62.1 commercial criteria. Infiltration will initially be presumed for New Construction ( post-2010) residential projects as 0.24 Air Change per Hour (A.C.H.) Natural