Filter Modification in Forced-Air HVAC Systems to Increase Heating & Cooling Airflow, Capacity & Efficiency

Abstract

Methods of increasing heating and cooling system airflow, output capacity and operational efficiency are provided. The method includes steps for replacing restrictive air filter systems with less restrictive air-filter systems allowing for HVAC systems to operate within manufacturer's design specifications and achieve optimized performance. Steps include assembling and installing air filter access panels, and filter retention devices into existing HVAC ductwork systems to accommodate larger, less restrictive filters. Heating and cooling capacity and efficiency is determined as a function of system parameters, comprising elements such as: gas combustion efficiency, supply airflow and return airflow temperature and humidity, blower-motor airflow volume and electricity consumption, ductwork static-pressure, and refrigerant pressure and temperature.

What is claimed is: 
     
         1 . A method of replacing restrictive, narrow, and smaller dimension air-filters, with less restrictive, wider, and larger dimension air-filters, in existing building heating and cooling systems, said method comprising the steps:
 a. Installing a filter installation and replacement access-hatch, or door, or access panel, to facilitate the use of less restrictive air-filters in forced-air HVAC systems. Said access-hatch will be installed in existing return-air plenum ductwork.   b. Installing a filter-retention device, mechanically fastened into said forced-air heating and cooling system return-air ductwork, to achieve continuous, and dependable filtration of air-born particles from a forced-air heating and cooling system.   c. Removing smaller restrictive filter, and installing larger less restrictive filter.   Whereby said method and equipment improves heating and cooling capacity and efficiency of existing heating, ventilation, and air-conditioning systems, by increasing airflow over heat exchangers and cooling coils, resulting in more even temperatures throughout said buildings with better air distribution between climate control zones, rooms, and building floors and levels.