I recently saw UV bulb installations in 2 HVAC systems in a home. Each system had the Lennox Healthy Climate filter box that has 2 UV-A bulbs inside; the label said 150 watts which I'm assuming is the total for 2 bulbs. These bulbs are on 24/7/365. I calculated that at 150 watts per filter box x 2 boxes they are consuming almost 2600 kWh per year, costing the customer about $30 per month. My recollection is that trying to sanitize the airstream is basically ineffective and that the only place it makes sense to use UV is on the coil and pan. Please confirm if I am right and if you can cite any sources for this that would be great. 

Tags: HVAC, UV, consumption, electrical

Views: 305

Reply to This

Replies to This Discussion

Ultraviolet (UV) light is part of a family of radiations called the electromagnetic spectrum. UV is just beyond the violet end of visible light and has smaller wavelengths and greater energy.

reflector design

I use a high end UV light in my own home,  If I cook BBQ inside the house it will stink for 30 min and the UV/air cleaner will clean it  up, I do not sick as most and I shake all hands.   if UV dose is large will change the DNA.   UV dose = intensity  X time.  I slow down the ECM blower motor  to 250 CFM but on 24/7/365 and with UV light & air cleaner it uses some $150 yr cost power and with a little outside air will keep building positive and blows out the dirt and vapors.  www.sanuvox.com  is one I have used for years and years.   There are others that work well also.   UV has been used for 70 years.   Down side is the UV can rot PVC wire coating and poly pans on AC coils.  Fiber glass is ok for a pan.  UV can eat up a filter in 30 days 

yourhome.honeywell.com/home/.../UV.../SummaryList.htm

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network.

Latest Activity

Malcolm McKelvie replied to Alan Gindt's discussion Minneapolis Blower Door System for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"yes I would pay the delivery fee!"
Saturday
Alan Gindt replied to Alan Gindt's discussion Minneapolis Blower Door System for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Malcolm, If you want to pay delivery from USA we can talk. Otherwise no thanks."
Saturday
Malcolm McKelvie replied to Alan Gindt's discussion Minneapolis Blower Door System for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"How old is it? I assume it is in good working order? I'm interested in it but the price needs…"
Saturday
William H Nickerson replied to Kim Tanner's discussion Fantastic innovation
"So that's where you use those True Flow plates....."
Friday
Colin Genge updated an event
Thumbnail

Passive House Testing Webinar with Kevin Brennan of the Passive House Academy at Online

September 29, 2015 from 1pm to 2pm
Tests needed to qualify as a passive houseWhy we’re seeing an increase in PH buildingsBest…See More
Friday
Colin Genge updated an event
Thumbnail

DM32 Smart Gauge 101 Webinar at Online

September 22, 2015 from 1pm to 2pm
Webinar Learning Objectives:Gauge settings and operationCalculate results in the gaugeUpdate the…See More
Friday
Colin Genge updated an event
Thumbnail

Blower Door 101 Webinar at Online

September 15, 2015 from 1pm to 2pm
See how easy it is to do your first test. Learn tips to perform your first duct test in only twenty…See More
Friday
Colin Genge updated an event
Thumbnail

Zone Pressure Diagnostics (ZPD) with Bill Eckman of NME$A Webinar at Online

September 10, 2015 from 1pm to 2pm
Benefits and limitations of Zonal Pressure Diagnostics (ZPD).Best practices for accurate…See More
Friday

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service