Indoor Air Quality/Expert Profile

TJ Nichols

On Vacation
returns 12/31/2018

Hello, I'd be glad to answer your questions on IAQ & other related issues!

Experience in the area

My approach is to treat the home as one system with individual working parts. Think (TEAMWORK). When one or more areas (PLAYERS) are failing or bad, it affects the whole system (TEAM) to operate less efficiently. I aim to address the problem, not just the symptoms, to offer better solution options.


High School Grad (06/1991)(VA) EPA licensed & certified in Types I & II Refrigeration (04/1997)(MD)

Past/Present Clients

Have served tens of thousands of customers over the course of my career

What do you like about this subject?

That it is related to other issues like HVAC & Building Science.

What do you still hope to achieve/learn in this field?

You do not stop learning in this field, so I expect to advance myself.

Something interesting about this subject that others may not know:

IAQ isn't the problem, its the symptom of the problem. So many of the IAQ products are nice, but most don't cure the problem! i.e. installing a high quality air filter is good, but if the ducts have loose seams, then dirty air is sucked in & goes out the vents, and you are breathing unfiltered attic and/or crawlspace air! To be more blunt, its like putting a band-aide on skin cancer!

Something controversial or provocative about this subject

A lot of money is being made off of IAQ products, but they may not be neccessary if the source, or cause of the IAQ symptoms would be addressed 1st! Put it like this...its like sitting on your front porch with a loaded shotgun and the front door's locked, but your backdoor is wide open! Many companies only care about their sales numbers, not service! Make wise decisions in your purchases.

Average Ratings

Recent Reviews from Users

Read More Comments

    K = Knowledgeability    C = Clarity of Response    P = Politeness
Todd08/13/13101010Thanks JT, I was not aware of .....
Jeff03/16/13101010Very happy with the response. He have .....
Sean02/19/13101010Quick response. Thorough answer. Thank you.
Nick02/14/13101010Very quick response to my questions. Detailed .....

Recent Answers from TJ Nichols

2013-08-03 mold in my apartment:

Hello Tabitha,    First let me say that the majority of apartment maint techs in the US are not qualified HVAC Techs. They usually know enough to get themselves into trouble. Not the case for everyone

2013-02-22 Duct board and mastic:

Hi Stacey,    As far as the tape, beyond what you have already investigated no.    Now with the duct board being fiberglass, and fiberglass has formaldehyde in it, and your sensitivity to that, then definitely

2013-02-19 Havoc and ducts:

Hi Stacey,    I'm glad to know that exhausting is correct on your furnace. As well as your symptoms not being as bad. Hopefully it will all diminish. I want to thank you for your rating. And if you have

2013-02-19 Fiberglass duct board:

Hi Sean,    More than likely, if duct board is used at all, then it would probably be duct board plenums & duct board return trunk lines, and duct board supply trunk lines, with flex supply branches to

2013-02-18 Havoc and ducts:

Hi Stacey,    Your furnace, regardless if it's 80% (metal exhaust pipe) or 90% (PVC exhaust pipe), should always exhaust outside. Now if it's the fresh air intake on a 90%, then it doesn't have to receive


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