DIY Chatroom -  DIY Home Improvement Forum
    DIY Forum     DIY Blogs     Photos     Woodworking     Advertise     Contact Us  

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!
Go Back   DIY Chatroom - DIY Home Improvement Forum > Home Improvement > Electrical

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-17-2010, 05:52 AM   #1
Member
 
Join Date: Nov 2008
Location: CA
Posts: 302
Default

Furnace fan power consumption?


Does anyone know how much electricity is consumpted approx. by the blower fan? Does it run off the 220V circuit or is it the 110V furnace breaker circuit?
Does not count freon compressor.

DIYGST is offline   Reply With Quote
Join DIYChatroom.com

Join the #1 DIY Forum Today - It's Totally Free!

DIYChatroom.com - Are you about to start a new home improvement task and need some help? Do you need advise on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that DIY Chatroom is a great community to join. Best of all it's totally free.

Join DIYChatroom.com - Click Here
JOIN FOR FREE


Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. DIYChatroom.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any home improvement task!
Old 04-17-2010, 07:12 AM   #2
Member
 
Join Date: Dec 2008
Location: Wilmington, DE
Posts: 3,097
Default

Furnace fan power consumption?


Most forced hot air furnaces run on 115, heat pumps and A/C compressors run on 240, but the fan that delivers the air run on 115. Motors vary depending on the age of the unit, older units are not as energy efficient. Many modern muti-speed heaters run on DC voltage. There should be a plate on the heater somewhere that tells the power draw in amps. Power consumption in watts(P)= voltage(E) x current(I). That is a rough answer because AC voltage works differently than DC. But roughly, a motor that draws 5Amps consumes 575Watts.

Just Bill is offline   Reply With Quote
Old 04-18-2010, 02:43 AM   #3
Member
 
Join Date: Nov 2008
Location: CA
Posts: 302
Default

Furnace fan power consumption?


So how much power does a typical compressor itself draws? it's on a 30amp 220V breaker.
DIYGST is offline   Reply With Quote
Old 04-18-2010, 05:06 AM   #4
" Euro " electrician
 
frenchelectrican's Avatar
 
Join Date: Apr 2006
Location: WI & France { in France for now }
Posts: 4,967
Default

Furnace fan power consumption?


For the air handling unit { indoor unit } if straght A/C unit typically the motour useally wired for 240 volts and the motor size will varies a bit depending on how big the unit itself some are at 1/3 and some are on 1/2 and few case at 3/4 HP setting.

But if you have furance with A/C coil on it then the motor useally be on 120 volts due there are other couple motours in there. for motour size it the same as I mention above.

Now for outdoor freon compressour unit that will varies a bit by tonnage size and how effect the unit it is.

The key item is look at the nameplate on the unit it will have all the info there and some of them will list the running amps on there.

Merci,Marc
frenchelectrican is offline   Reply With Quote
Old 04-19-2010, 01:35 PM   #5
Member
 
Join Date: Nov 2008
Location: CA
Posts: 302
Default

Furnace fan power consumption?


I look at the compressor and see some FLA numbers (1, 1.3 etc) but it says minimum amp 17amps that's 240V*17amps minimum when it runs?
I am trying to compare the consumption of a whole house fan vs an A/C system.
But the furnace blower itself is almost as much power as the whole house fan itself. However I don't think an A/C runs constantly in an hour. maybe switch on 5-6 times depends how fast the room is heating up again.
DIYGST is offline   Reply With Quote
Old 04-19-2010, 02:00 PM   #6
It was a dark and stormy
 
Yoyizit's Avatar
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,954
Default

Furnace fan power consumption?


http://www.google.com/search?client=...UTF-8&oe=UTF-8

Yoyizit is offline   Reply With Quote
Reply


-->
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Honeywell mini zone and generator power daddyrabbit HVAC 2 02-12-2010 11:09 PM
Gas Furnace Power Venter Problem JoBlowHomeOwner HVAC 6 10-17-2009 10:05 PM
Old refrigerator = high power consumption? RammsteinNicCage Appliances 6 06-13-2008 11:50 PM
furnace or electrical help tuasoi Electrical 13 11-29-2007 01:53 PM
furnace and or electrical problems tuasoi General Discussion 4 11-29-2007 01:50 PM


Top of Page | View New Posts


All times are GMT -4. The time now is 05:51 AM.


© 2003 - 2010 The Building Network LLC