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Old 11-01-17, 07:01 PM   #79
Supreme EcoRenovator
Join Date: Sep 2012
Location: Vancouver Island,Canada.
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Thanks AirSepTech and it is good to hear of your heating outcome using the dual hose.

25*f / -3.9 c is a low temp for these portables to be making heat , will be set if this model performs the same.

These newer Ac's are designed different then the older portables

A few years back

First single hoses they used a fan that split its air between the front heat and rear exhaust port wasting cooled or warmed air via the exhaust duct.

Next they made a dual hose with 3 fans

it used one front fan one exhaust fan and one slightly smaller intake fan. this arrangement lowered air infiltration down but due to the differences in fan cfm it still made some negative pressure.

this was done to insure a air exchange took place for good air quality I read.

Then the dual hose came out with one front fan and one exhaust fan used to intake with as well as exhaust , eliminating any negative pressure.

For the best Mod use a single hose ac with dual fans not a triple or single , with heater.

These portable ac heaters seem to have a good defrost system

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