When it comes to heating or cooling the interior of their homes, most homeowners assume most heating/cooling systems are more than adequate to achieve comfortable room temperatures; be it summer or winter. Nothing could be further from the truth.
Most homes in the US use split system, forced air, ducted heating/cooling unit that consists of a compressor unit ( located outside) that is used for cooling the house but may also be a heat pump version that can provide cool or hot air. The other part of the system is the air handler (fan powered unit) normally located inside the home in the basement, attic, garage or crawl space.
HVAC systems are rated by using a SEER standard (most now minimum 12 SEER) with units now having efficiency ratings up to 21 SEER. And, many of the newer heating/cooling systems incorporate the variable speed, computer controlled digital motors for air flow. These newer units are not only much more energy efficient but can also significantly aid in air filtration and the removal of indoor airborne contaminants.
The new variable speed fan systems in the air handlers allow for the fan motor to run continuously using very little electricity. When the system calls for heat or cooling the fan motor ramps up to meet the air flow requirements and runs at that speed until the heating or cooling demand is met. Once the thermostat is satisfied the house is at the desired temperature the fan slows down to a very low running speed (around 30% of high speed).
Beyond the fact that using a constant running fan keeps the air temperature more even throughout the house, the constant movement of air also keeps the particulate in the house airborne and allows them to be continuously pulled back to the air handler ( and air filter) through the return air ducts.
This is important because unless the air in the home is constantly being moved and pulled through the HVAC duct system, the dust, dirt, dust mites, mold and bacteria will stay on the floors and other surfaces and unless they are disturbed and put back into the air, they will not be captured by the air filters in the air handler.
Pure Air Systems has been using the variable speed digitally controlled motors in their Hepa Shield systems since 1999. And, is the only HEPA filtration system manufacturer in North America that uses this technology. When coupling the HS series HEPA units to a variable speed heating/cooling system you have the best of both worlds. A commercial grade HEPA system that runs in conjunction with the variable speed HVAC unit, ramping up and ramping down and providing constant air filtration with minimal energy costs.
For more information on the variable speed heating/cooling systems and the line of variable speed HEPA systems go to our website at: www.pureairsystems.com