I have a question regarding testing in lower outdoor temperatures.

I have a question regarding testing in lower outdoor temperatures.  We are located in New Jersey and typically try to start our maintenances in April when the outdoor temperatures are less than favorable.  We are using the Fieldpiece charging jacket and asking customers to bring the home temperature up to 74 degrees prior to our arrival.  Will testing without gauges method still be accurate?

Rookie Asked on March 27, 2018 in Residential HVAC.
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