air filtration uv lights catalists our role

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#1

Originally Posted By: poffenberger
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merv ratings… uv lights… return… above a-coil… eac’s, we know eac’s are cfm specific , 1"filters, pleated , 1" filters claiming to be a merv 8… or do we just say it is operational.

#2

Originally Posted By: ecrofutt
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Huh?


EAC's (Electronic Air Cleaners) are CFM Specific.

ASHRAE 52.2 defines the MERV (Minimum Efficiency Rating Value)

Standard 52.2 lists approximate dust-spot efficiencies and corresponding MERV
values. For example:
l MERV values of 8 and higher correspond to dust-spot efficiencies of more
than 30 percent.
l MERV values of 13 and higher correspond to dust-spot efficiencies more
than 80 percent.
l MERV values of 15 and higher correspond to dust-spot efficiencies more
than 95 percent.
So, 30 percent pre-filters will eventually be replaced with filters with a MERV
rating of 8. Similarly, existing 80 percent filters will have a new rating of MERV
13, and 95 percent filters a new rating of MERV 15.

But what are you saying/asking? I haven't a clue?

--
Erby Crofutt
B4U Close Home Inspections
Georgetown, Kentucky
www.b4uclose.com

#3

Originally Posted By: Blaine Wiley
This post was automatically imported from our archived forum.


Quote:
uv lights


Tanning Beds???? ![icon_question.gif](upload://t2zemjDOQRADd4xSC3xOot86t0m.gif)

If you're asking about whether we check and report on the efficiency of items...I don't.
#4

Originally Posted By: poffenberger
This post was automatically imported from our archived forum.


Got a little carried away. icon_redface.gif indoor air quality is getting attention now more than ever. UV lights in returns and above a-coils have to be replaced, lets just say once a year. Just wondered how inspectors are talking with clients about indoor air quality, fresh-air exchangers,air filters,combustion-air…etc… icon_question.gif

#5

Originally Posted By: Blaine Wiley
This post was automatically imported from our archived forum.


Personally I don’t mention indoor air quality. If the client presses me on the issue I simply refer them to an indoor air quality specialist. I do mention the importance of changing the HVAC filter regularly, and having annual professional maintenance on the system.


Indoor air quality and combustion air are two different items. I check for adequate combustion air to the furnace and/or water heater, especially when either is located in a confined space.