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Guardian Plus Air Systems

Since we are in the middle of the dog days of summer, better known as August, you certainly are not running your furnace. It is the time of year when a cool run through the yard sprinkler feels better than a long hot shower. Nevertheless I thought I would take this time to talk to you about the latest in indoor air quality products available from Broan – Nutone.

Broan-Nutone recently introduced a unit they call the “Guardian Plus Air Systems”, offering you a combination of in home indoor air quality and air ventilation. This system offers technological advantages you can’t get in other home systems. Part of the uniqueness is that it is independent of your existing furnace. This unit is a combination of a HEPA air filtration unit, fresh air intake and heat recovery. It takes air cleaning above and beyond what normal electronic and media type filters provide.

It is a unit that is completely separate from your existing furnace. It however does use your existing duct work. Typically the Guardian Plus is set in the basement near the furnace. Ducting is then run from the unit to (1) Outside. (2.) The return air duct, and (3.) A new separate return air grill that is installed upstairs in the central living area.

This unit will draw stale air from inside the home, a portion of the air is discharged to the outside. Fresh air is brought in and blended with the interior air, air then goes through the pre filter and the HEPA filter, which catches up to 99.97% of 0.3 micron size particles. The fresh filtered air is then distributed throughout the house. The remote mounted control for the unit is equipped with filter maintenance indicators to remind you when it is time to change the HEPA and/or the pre filters.

The Broan–Nutone Guardian Plus Air System is available only through certified, licensed and insured dealers. Should you have any indoor quality concerns, questions, and would like more information or an estimate on any indoor air quality items such as duct cleaning, ultra violet lights, humidification or have any other H.V.A.C. questions please feel free to call FLAME Heating, Cooling and Electrical, toll free at (888) 234-2340 or visit our web address at

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