List of Simple Questions 5
On the List of Simple Questions page and on the others alike (see links to them below), you can find answers to all spectrums of issues this website is dedicated for!
If your search engine sent you to this page that means, that a similar question was asked before and you will be able to find the answer you are looking for.
Some of the questions are simple enough and you can find answers right here on this page.
The others are more complicated and I provided links to the pages on my site where you can find free information.
For the third part of the questions that are not that simple, as you may think, I provided links to the paid pages or books on my site.
So, please scroll down, find your question and good luck!
Are there examples of spiral duct installations?
You can find them in the Chapter #57 of my Ductwork Installation Guide e-book.
Are you supposed to turn furnace off in the summer?
If there is no AC then answer is yes.
Can a gas line run through the cold air return duct?
Yes, unless there are restrictions in your local code.
Can bathroom exhaust and dryer share same outside duct?
Code prohibits them sharing the same duct.
Can be a condensate pump discharging into the crawlspace?
Can ductwork be run through the attic?
Of course, if ductwork installed in the attic it runs through the attic.
Can I cut a cold air return into side of trunk?
Yes. Should be 10' away from the water heater or gravity furnace.
Can I cut into duct to let heat in basement?
Can I insulate my ductwork and cold air return together?
Yes, but do not forget to put one layer of insulation on the supply duct. Read more in the Chapter #55 from my Ductwork Installation Guide e-book.
Can I save energy from insulating exhaust duct work?
Can I tee off the dryer line and connect a bathroom exhaust pipe to the same line to avoid having two outlets 2 feet from each other on the outside?
Dryer does not have a back draft damper. Bath exhaust fan has a cheesy back draft damper. When just one is running, moist air will back draft into the other. Therefore, you will make it worse instead of better. When both are running, the duct is too small. The dryer will still blow back into the bathroom. Just a bad idea.
Can my return air plenum cause my floors to rot?
Well, I doubt it.
Can you install fan into hvac duct?
Can you use the same ductwork in a house if you enlarge the unit?
Most likely no.
Can you vent a basement bathroom fan into cold air return?
Well, this question is not as stupid as it seems, because in the big, multilevel commercial buildings they vent it right into ceiling plenum. However, unless you want to play a game: Guess what grandpa ate for breakfast, never do it in your house, period.
Did I hurt my furnace when cutting through a/c wire?
Probably not, however you may have blown up the fuse.
Do I have to use my cold air returns if I get a high efficiency furnace?
You are probably referring to the combustion air intake, you may need it then for your water heater.
Do I need a cold air return in my crawl space?
Do I need to insulate my cold air return ductwork?
Do rooms with cold duct returns be open or closed?
They can't be closed - this is one of the reasons why they can't be closed.
Exactly one month ago to the day, the following American Standard system was installed at my residence: 3 ton, 20 SEER Platinum Series variable speed heat pump; 3 ton variable speed air handler; AccuClean Filtration System; two zones; and all new duct work.
Yesterday, I walked in the house a smelled a very sour odor ("dirty sock syndrome?"). This odor was coming through the registers from the air handler. At times the odor will completely disappear and the air coming from the registers is as fresh as it was the first day. Then for no apparent reason, the sour odor will return. My air handler is installed under the house in a crawl space where I maintain a relative humidity of 45-50% using a dehumidifier.
When I emailed my contractor about this odor problem, he was able to look at my thermostat control using an online link. His response was, "let's start by changing the fan control from "on" to "auto." I unknowingly had been running the fan continuously for a month. I immediately did this and began to notice a drop in my indoor humidity over the next day. Also, the sour odor has completely disappeared. I guess less moisture in the return air means less moisture in the air handler and the vicious cycle is interrupted. Somehow this has had a positive effect on eliminating the bacterial odor.
I had noticed indoor humidity levels ranging from 47 to 52% during the first month of operation with the unit set to "on" continuously. When I changed it to "auto" it was at 52%. It has dropped to a range of 44 to 48% with the fan in "auto" mode and all problems have disappeared.
Gas fireplace listed as no vent fireplaces for LP and Nat Gas... how does this work with no vent? Wouldn't that be a CO risk?
Just curious on how they can get away without venting a gas one.
These units are equipped with an oxygen sensor that will shut the appliance off if the O2 in the room falls below a safe level.
It heated the room but it always smelled and it shut off on the O sensor all the time.
Also, if you or anyone in your family has asthma or any other respiratory issues, you should not use a ventless fireplace or heater.
Have you heard of putting the heat pump inside coil on return side of a residential system gas furnace instead of on supply side after heat exchanger?
It's a good way to ruin a heat exchanger. The super cold air will cause the furnace heat exchanger to sweat and rust profusely causing premature death of furnace.
It's the moisture in the air inside the heat exchanger that is the problem. It will condense and rot your heat exchanger from the inside out.
How do I fix cold air ducts sweating in basement?
Normally, a cold air duct is not sweating in the basement. However if your basement is very humid you may drop a cold air return to your basement or/and put a dehumidifier there. Buy a dehumidifier on the right or on the left.
How do I install a new duct and a wall register in an interior wall?
I have it in Chapter #5 from my Ductwork Installation Guide book dedicated to this issue.