Best location to place an air filter?

Q: There are two possible locations to put an air filter for my HVAC system. 1. ceiling return grill 2. furnace blower unit in the attic

Currently there is no filter at the blower unit. I have been putting Filtrete 1900 at the return grill because it’s easier to change and I assume that will keep the return duct cleaner.

Recently a HVAC guy commented I will have better filtration if the filter is closer to the blower (he suggested #2 location)

  1. Can I put two filters in my system – one at the return gill (a cheap one) and one at the blower (Filtrete 1900)? or that will create too much airflow restriction?
  2. If I should only have one filter, which location will be best? – indhtgc

A: I would keep the filter where it is. In my experience, filters that are installed directly at the unit or even inside the unit can be a pain to replace. The return air filter grille is much more convenient.

And no you don’t want to double filter it. That just puts unnecessary stress on the motor because it has to work harder to overcome two different filters instead of one. – Cobra449

13 Dec

Safe T Switch: HVAC Learning Solutions

Safe T Switch detects clogged A/C condensate drains and shuts off the system to prevent water damage to floors, walls and ceilings. Can be installed horizontally or vertically, inline or on the primary pan’s auxiliary drain outlet by using the included ¾” adapter, bushing and cap. Can be installed on a sloping line and does not need to be level or plumb.

video by: HVAC Learning Solutions

28 Nov

NEW Wide Mouth Gallon and Applicator

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NEW Wide Mouth Gallon

  • Easier application on all PVC electrical conduit sizes
  • Easier use with larger application dauber
  • Better pouring capability
  • Overall ease of use.

NEW PVC Solvent Cement Applicator

  • 2 in 1 Applicator
  • for both regular & wide mouth gallon cans

RectorSeal is proud to announce the introduction of the Wide Mouth Gallon PVC Conduit 633L and 2 in 1 Applicator for Low-VOC cement. The part number for this new product is 55979. Our Conduit 633L PCV cement is rated for electrical PVC conduit up to 6 inch schedule 80 pipe. No primer is needed code permitting.

The wide mouth can provide contractors easier application on larger PVC pipe applications. The wide mouth gives better pouring capability, the ability to use a larger application dauber and overall ease of use

31 Oct

Johnstone Supply: Training Opportunity

Please join us at Johnstone Supply Pensacola on November 1st or Johnstone Supply Ft. Walton beach on October 31st for a product training class. This class will qualify for NATE continuing education credit. This class will feature three topics: technical tips including compressor start up, line sets and getting the most out of your customer service. Bring your NATE ID number to receive NATE credit.

Where: Jonstone Supply #165
3900 North W Street
Pensacola, FL 32505

Johnstone Supply #355
117 Hollywood Blvd
Fort Walton Beach, FL 32548

Fore more details, call: Johnstone Supply
Pensacola 850.436.2008
Ft Walton Beach 850.364.6880

27 Oct