winter time-heating advice

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Old Oct 19, 2009 | 07:26 AM
  #16  
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Originally Posted by darrinp10
I have a few questions below, I live in a 1250 SF Ranch type home built in 1997.

- What direction should I have my ceiling fans turn during the winter months (blowing air down, OR sucking it up)? I've heard this argued both ways... Having them turn so the heat blows down from the ceiling seems logical, but can cause a "breeze" that will make you feel colder (thus making you turn the heat up in the house, costing more in heating).) BUT if you have them pulling the air up that heat could be trapped at the ceiling, with the cold air at the floor.

- Should I leave the ceiling fans on ALL the time (24/7) in the winter, like will the cost saving on the Gas bill (for the furnace) over come the extra electricity spent running the fans all the time?

- I have a programmable thermostat, and keep the temp in the house at 69 while I'm there in the evenings, 64 while I sleep...how low is too low to set the daytime temp (while I'm not there). Currently I set it down to 62, and it takes it about an hour and a half to make it back up to my 69 set point for the evening.

BTW, great idea for a thread! I'm enjoying the questions and responses!
most fan mfg's say-a clockwise direction in cooler weather to move stagnant hot air off the the ceiling area, counter clockwise in the summer resulting in a downward airflow.now that 1.5 hr to climb from 62 to 69?what is the outside ambient temp?if it ain't zero degrees ,that rate seems to be long getting back up to temp.in my area-i use a design of maintaining 70 degrees in a house when it's zero outside,hence on a say 25-45 degrees day -the heating device is oversized and should have no problem heating a house up nicely.this is why at minimum i recommend a 2 stage furnace, except on the coldest days or when the thermostat is coming out of setback mode, it will be on low fire.now on the coldest days or say, when your stat is set to got to 69 from 62, it will go full fire to get the house back up to temp.i personally have two of them in my home and install alot of them -american standard accu- lean electronic air cleaners,the benefit of these or even a air filter , is it's only cleaning air when air is moving,i program my thermostats not to run in an on position, but a "circulatory" mode -meaning it will cycle the blower on low speed 30% of the time in a non- call for heating or cooling, to get the benefit of the air being cleaned,now i only run this in the summer not the winter,in the summer ,a ir being circulated will help alleviate hot spots[same effect as ceiling fans].now in the summer,i don't recommend this as it tends to cause a chill feeling.i recommend leving furnace blower in the auto setting.i know i rambled in this last part , but hopefully you get the relationship to keeping ceiling fans off in the winter.
fyi to all-on winter check-ups, on natural gas winter check-ups on boilers and furnaces-make sure it's cold outside and there is a draw on the gas in the neighborhood so when the gas pressure is checked by a tech, it's accurate.

now on oil and gas fired furnaces,make sure the temp rise is in mfg's specs and the temp in supply duct work at 2' past the first 90 is ~10 degrees warmer than the return temp, too many guys never adjust the delay off time in heating mode, leaving too much heat in your ductwork that you paid for and not in your living space, this also will preserve and elongate the life of your heat exchanger.phil
 
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Old Oct 19, 2009 | 07:35 AM
  #17  
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Originally Posted by openclasspro#11
jdh-curious what your credentials are?unless you performed a manual j on his house- how did you come up with 8ok 3t?general rules of thumb?
LOL. my credentials are, im nate certified, epa certified, have done installs for 6 yrs, and service for 3yrs for a perty big company, if you load a well insulated home, that would be a real close guess. of course the windows direction of the home, blahblah blah alll take effect. thats close though
 

Last edited by JJDH; Oct 19, 2009 at 07:38 AM.
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Old Oct 19, 2009 | 07:37 AM
  #18  
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Originally Posted by johnnyd2723
Our hvac contractors(all 5 of them) do not recommend them but in some cases the fans do serve a purpose. Especially if the buyer wants a certain design built and it's not hvac friendly. See it all the time on the custom Lake Erie homes. Of course it's always after they have moved in and then start complaining when we knew it was going to be a problem
thats when you say arzell, zoning....
 
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Old Oct 19, 2009 | 07:41 AM
  #19  
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close enough, that isn't good enough for me or my customers,i'm not like the hacks out there that get in a low ball bidding war installing house brand equipment and flex duct .in todays age of fossil fuel costs and electricity costs, gone are the days of oversizing equipment and bigger is better theory.in reality you get what you pay for...
 
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Old Oct 19, 2009 | 08:49 AM
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Originally Posted by JJDH
thats when you say arzell, zoning....
Funny thing about that is they would rather spend 2200.00 (or whatever you want to charge them) on upgraded trim or bath fixtures or what not than spend the money on zoning (most of them anyways).
 
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Old Oct 19, 2009 | 10:09 AM
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Thanks for the help fellas, I am in the process of remodeling this house. I bought it in june, it was built in 1945 and then had a little work done in the late 70's. When the house was bought there was no insulation and the ex owners said it was taking 200gallons of propane a week to heat the house and they couldn't afford that so they sold it. I filled the walls with cellulose and put 20" in the attic, it hasn't gotten real cold yet hear but the heater rarely kicks on and when it does it only takes a few minutes before it back up to temp and shuts off. I guess when I get ready to make the change I will have them come run test and see exactly what I need. I wish one of you guys were closer, because its would be nice to find someone that I feal I can trust to do it.
 
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Old Oct 19, 2009 | 10:21 AM
  #22  
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anytime bud,my theory is find out what the customer wants, show them what they actually need,fully educate them on what they are getting,what it will cost, and what they are paying for their return,i give them all the necessary info to make a wise ,unpressured decision.i usually spend 2-2 1/2 hrs on a proposal and estimate with a customer, i guess thats why the fellow contractors don't like me around here-i don't rip people off and i don't hide info...
 
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Old Oct 19, 2009 | 10:22 AM
  #23  
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with that short run time-my money is on fact it is oversized!
 
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Old Oct 19, 2009 | 12:11 PM
  #24  
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Originally Posted by johnnyd2723
What's the cfm and air temp coming out of the registers?
I've seen the stick thermometers that HVAC techs use - I'll have to pick one up and take readings. Can I buy a gauge at a home improvement store to check the cfm, or is that an expensive item only found at HVAC supply places?
 
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Old Oct 19, 2009 | 12:17 PM
  #25  
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a velomometer is used to take cfm readings,purchased through hvac supply housees.
 
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Old Oct 19, 2009 | 12:26 PM
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From: St Mary's County, MD. Home of the big forehead.
Originally Posted by openclasspro#11
how close are you to odenton?
Not very close....I'm about 80 miles further south

Originally Posted by openclasspro#11
is the duct work used coming off the main truck lines? -round pipe or flexible duct?2-i bet they didn't size duct work for 900 fpm on the supply side-even if 1 room is farthest away from unit- if ductwork is SIZED CORRECTLY,and dampers are used at main lines at branch takeoffs- this won't be an issue-?
Honestly, I don't know. I've never been in the attic. I'll have to go up there this weekend and take a look. I have an open foyer, and the thought of falling through the ceiling and going 19 feet down to the first floor has kept me out of the attic.

Originally Posted by openclasspro#11
how old is house?
It's only 5 years old.

Originally Posted by openclasspro#11
is said contractor todd air or grove heating?
Neither, but I won't bash them. It's a local company here in Southern MD. I might just ask them to come look at it and get advice - without mentioning that they did the install. Then if they start badmouthing the original installer I'll let them know that it was them.

Originally Posted by openclasspro#11
booster fans will add air flow but they will cut the discharge temps down considerably-a bad on warm air from a heat pump system...phil
I looked into the booster fans and wondered just that - if they would make the air colder.

Thanks for your help!
 
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Old Oct 19, 2009 | 05:18 PM
  #27  
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Originally Posted by openclasspro#11
close enough, that isn't good enough for me or my customers,i'm not like the hacks out there that get in a low ball bidding war installing house brand equipment and flex duct .in todays age of fossil fuel costs and electricity costs, gone are the days of oversizing equipment and bigger is better theory.in reality you get what you pay for...
let me rephrase,, i am far from a hack. i am a perfectionist with my work,m i am by the book and good at it, with that being said i have sized enough systems and designed them that i can be really darn close just by walking through. when i do replace equipment i do the load calc sheet, on the computer i dont feel like typing a book, so you should kno what i mean, it isnt rocket science. i am not cheap, when i do get out on my own my prices will be towards the high end, no lo ball bullsht. i am working on my contractors license... i would still bet a nickel u go load that house mentioned above and that will be what it needs, of course no one has seen it
 
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Old Oct 19, 2009 | 05:24 PM
  #28  
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Originally Posted by temper
I've seen the stick thermometers that HVAC techs use - I'll have to pick one up and take readings. Can I buy a gauge at a home improvement store to check the cfm, or is that an expensive item only found at HVAC supply places?
no need to measure cfm, its calculated on heat rise.. just call a company to check it. there is alot more than heat rise to look for, like proper combustion, efficiency, amp draws, micro amps, so on so forth, using a bachrach machine, co2 levels, co levels
 
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Old Oct 19, 2009 | 05:26 PM
  #29  
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I can run my heat cheaper than anyone else



 
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Old Oct 19, 2009 | 05:27 PM
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Originally Posted by openclasspro#11
a velomometer is used to take cfm readings,purchased through hvac supply housees.
anemometer....would be the proper tool..imho
 
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