The following problems can occur with
gas heaters:
Fouling of the air quality
Contributing to the “Greenhouse Effect”
Restrictive energy use laws
Pressure regulator problems
Internal High Voltage wiring
Flame exposed heat exchanger
The following problems can occur withheat pumps
Fouling of the air quality
Contributing to the “Ozone problem”
Questionable fuel savings
Shortages of maintenance CFC chemicals
Restrictive energy use laws
Large current requirements
High circuit exposure to pool water
Pressure regulator problems
Internal pressure problems
Internal temperature problems
Refrigerant disposal restrictions
Internal High Voltage wiring
Planned extinction of products using CFC 12 or CFC 22
Attics get very hot. In some cases, attics get extremely hot. All of this occurs because of
solar radiation. Homeowners have taken extraordinary steps to cool down their attics. These steps
have included wind driven turbines, roof mounted power driven turbines, whole house ventilating
fans mounted in the attic and numerous other devices. Creative designs and modifications of
houses have produced cooler attics in certain instances.
Required passive ventilation needs [for moisture purposes] use the rule of thumb of 1
square foot for every 350 sq ft of attic space when a poor vapor barrier is present on the ceiling of
the home. When a good vapor barrier is present, as in new home construction, the rule of thumb
is 1 square foot for every 700 sq ft of attic space. Any ventilation over this amount is “additional”
and is added for “cooling” purposes.
Altering a “cooled-down” attic is simple. Just turn off the wind ventilators, power
ventilators and plug up some of the added ventilation holes. Ventilation can be reduced down to 1
square foot for every 350 sq ft of attic space without much concern.
Certain types of passive ventilation can actually improve the heat transfer characteristics of
the PCS1. We know that the PCS1 works fine with twice the passive ventilation that a home was
designed with in 1973 or prior times. We know that newer homes are being built today with more
passive ventilation. We know the PCS1 has been reported to operate successfully in attics having
small continuous ridge vents. We also know that power ventilators and wind turbines take out too
The ideal ventilation for the PCS1 has not been fully defined by research yet.
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