No more guessing! An easy-to-use, easy-to-read gage to monitor filter media loading so that filter media may be changed when needed. The gage is installed between the blower and the filter, where a slight vacuum exists due to the air-flow resistance of the air filter. Air flowing into the gage, around the calibration screw, lifts a vane in proportion to the negative pressure in the blower compartment. As the air filter loads, the vacuum increases, raising the vane to indicate a filter change is necessary.
. Dial design is easy to read and interpret when filter needs to be changed. . Easy to calibrate for new, clean media. . Easy installation. . Built-in filter screen removes dust from sampled ambient air to keep gage clean. . May be mounted remotely up to 10 feet from monitoring location (with extension kit). . Easy to disassemble/assemble for service. . Low cost. . Variety of uses wherever a blower/filter combination needs to be monitored.
INSTALLATION: The gage must be located where it can sense pressure conditions in the blower compartment between the filter and the blower. 1). Select a location on a vertical surface enclosing the blower compartment and drill a 3/8" hole. 2). Remove the protective paper from the foam adhesive strip on the back of the gage. Mount the gage in a level position with the pressure sensing tube projecting into the blower compartment.
By Golfer in Melbourne from Melbourne, Florida on 8/24/2010
Pros:
Easy To Install
Best Uses:
Central AC
Describe Yourself:
Homeowner
Bottom Line:
Yes, I would recommend this to a friend
Comments aboutGeneralAire G99 Air Filter Gauge:
I've wanted for some time to be able to determine if my A/C filter is effecient or is it time to replace. It was easy to install, but remember to have a new filter to calibrate the efficiency meter. It must be set with a clean filter. With filters running $85 each you want to get the most out of them without sacrificing efficiency.
By john at the lake from Lake Quivira, KS on 5/10/2010
Pros:
Compact, Easy To Install
Best Uses:
Central AC, Central Heating
Describe Yourself:
Homeowner
Bottom Line:
Yes, I would recommend this to a friend
Comments aboutGeneralAire G99 Air Filter Gauge:
Easy to install. Look or reach inside the compartment that the blower fan is located to get an approximate location, and make sure you'll be drilling through sheet metal without hitting anything else. I used a smaller drill bit than specified, but big enough that the little plastic tube fit through. I used a dab of caulk. Very easy to calibrate. Remarkably sensitive pressure sensor. I bought $100 filters because of the severe pollen this year--I assume this [$] product will be totally worth it.
Easy to install. Measures filter load to honestly tell you when to change your filter, unlike some thermostat hour-counting reminder. With $$$ MERV 13 filters, you do not want to replace one before its time.
By Willy Wonka Dude from Prescott, WI on 3/14/2010
Pros:
Compact, Easy To Install
Best Uses:
Central AC, Central Heating, Home
Describe Yourself:
Handyman, Homeowner
Bottom Line:
Yes, I would recommend this to a friend
Comments aboutGeneralAire G99 Air Filter Gauge:
The product is straight forward but it asks you to drill a 3/8" hole in the side panel of your furnace, yet the shaft that goes into the hole is considerably smaller than the hole. I expected a tight, or at least snug fit to this shaft. I guess the self adhesive tape is supposed to creat the air tight seal necessary to accurately measure the air flow coming past the filter.
