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Air travels through the return air grill to get to the furnace, where it is filtered, heated or cooled and re circulated through the air supply grilles.
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∙ 14y ago
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What are the vents for above the doors in a manufactured home?
Air flow. They help to keep air moving to your return air grill.
What size return air grill for a 48000 BTU heating system?
48,000 btus is equal to 4 tons of air flow, 12,000 btus per ton. You need 144 sq in per ton. Return grill should be 24x24. 48,000 btus is equal to 4 tons of air flow, 12,000 btus per ton. You need 144 sq in per ton. Return grill should be 24x24. 48,000 btus is equal to 4 tons of air flow, 12,000 btus per ton. You need 144 sq in per ton. Return grill should be 24x24.
What is the purpose of cold air return in a house?
The air moving away from the furnace has to be replaced.
What size return air grill for a 60000 BTU heating system?
The size is determined by the ac contractor or engineer.
Why is the intake grill of your home air conditioner blowing cold air?
A supply duct connected to the return duct somewhere? Fan running backwards?
How do you calculate the return air grillsize in an air conditioning system?
really depends on the size of the unit but if your not sure i would go with a 20x20 or a 20x25 filterback grill..
What size should the return air grill be for a 5 ton ac unit?
Your ac contractor or engineer will determine the correct size.
If you are using a 20X20 AC filter and need to use a 20X25 where can you find the grate or register for the new filter and what is it called?
What you are refering to is called a return filter grill and there are tons to chose from, ( from ) tons of places. Home Depot, Lowes, and the likes of these places or your Heating Air/Conditioner Wholesaler close to your area. Also try typing in Central Air Return Air Filter Grills in your search bar. The Bigger the better is the rule of thumb with return air filter grills to a reasonable point . 600 cubic feet a minute is what I design air flow quantity for on my basic stuff. It is my opinion you are better off with a less expensive filter and a slower flow rate design through your return air filter grill than to use a expensive but usually highly restrictive filter in a smaller return air filter grill that is already restrictive in itself. Don't take me wrong here!!!!! ( Those Super High Quality Return Air Filters are Wonderful , usually ), Just make sure you have plenty big enough filter grill return area size to accomadate them in your system. Hope this helps: Jimiwane
What size return air grill for a 36000 BTU heating system?
The size of the return air grill depends on the size of the forced air fan. The return air grid to reduce noise should be 5 to 8 times the size of the fan outlet. A 36000 btu heating system often has between a 500 to 1500 CFM fan the outlets on these fans are often between 30 and 80 square inches so the grid should be between 150 and 600 square inches (depending on the fan), the bigger you can fit the better. If you can fit it I'd put in a 12 x36 grill (432 sq in) but a 12 x 24" (288 sq inch)grill should work well too.
How do you purpose a grill?
pour milk on it ;)
What is the cfm value of a 20 x20 return air grill?
your going to get 800 cfm through a 20x20. Its the gross square inches divided by 2
What is the purpose of an air intake with a filter in the hallway that is open to the attic?
I assume that this is the only return filter going to your furnance which would be located in the attic. Check all other bedrooms and see if there are 2 grill openings in the ceiling (meaning that room has its own supply register and return register) or if there is only 1 grill register in each bedroom.If only 1 grill register in every room than this is your only return grill intake for the furnance.this filter should be checked every 30-45 days and replaced if dirty.Keeping this filter clean will keep your furnance running at its peak performance. If however there are 2 grill openings in your bedrooms then you will have to go into the attic and check the filter inside your furnance also.I assume your home is single level with one heat system?
