How to Use a Combustion Analyzer on a High-efficiency Furnace

Tim Turner, HVAC technician, Flame Heating, Cooling, Plumbing, and Electrical, Warren, Michigan, demonstrates how to use a combustion analyzer to determine a furnace’s true efficiency.

[Infowarrior-]

Great foundational info. Very helpful. Thank you!

[scottwillis]

Before drilling a hole, maybe look for a test port, or a plug left by previous service?

[whitesheatingairappliancer]

I to would like to know where you get those plugs?

[karlschwab]

Excellent Tim.  I have a home in Lapeer County, MI with a Lennox G-26 furnace that is leaking flue gasses into the house just recently.  Also just recently, when the furnace first fires up after being off for about a week, it starts up with a big boom!  This furnace is on propane too.  I'll find a tech in the Lapeer that can check it out for me.  Keep the informative videos coming too!  Karl

[andydaly]

I've been looking everywhere where do you find those plastic plugs for the test holes.

[bobbyrich]

great video. I laugh when technicians dont know what a combustion analyzer is. I would be lost without mine.

[brianellsworth]

All the valve adjustments are sealed with something so you don't play with it. Only the manifold pressure needs to be tested on a new 90+installation. The pressure at the draft should be tested.

[normancole]

please tell us what terms to use to search for the plugs on the internet. i skip these test a lot because i cant access the flue term on a 3 story house in the rain at night on a 12 12 roof lol.. please inform us about the plugs! they would be a life saver literally...

[gurmailsandhu]

I am in Stockton ca and I can’t find anybody who has combustion analyzer. I need to get my Westinghouse water heater calibrated. Who do I find one other than calling around

[fairgolfer]

They make PVC/636 combustion tees. 2&3"

[reidantoniow]

drilling holes in venting to take combustion reading checklist...
C vent- ya ok sure
pvc, cpvc- this is why they have test port tees, beats having to go outside to take a proper reading

[rossr]

So you drill a hole in plastic vent and put a plug in it? How is that safe or to code? It’s not safe at all

[baivabmitra]

Capturing data is fine but then what? Nothing about how to change, where to change. Rather useless video I'd say.

[johnflaherty]

u are talking as if ur speaking to ur Sevice NO to little explanation.... bad video, , , , . Hense, , , if you were   making a video to seasoned  I say professionals  ur ok.... I cant use you video to do NoThInG