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5-ton cooling system gives how many cfm. - Cfm Daikin R410a Split System Air Conditioner

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2,000 cfm. The rule of thumb is 400 cfm per ton, so 5 tons multplied by 400 cfm gives u 2,000 cfm

Posted on Apr 04, 2011

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What size coil fits this


The 70 stands for 70,000 btu and the 16 stands for 1600 cfm.. Air conditioning requires 400 cfm per ton, so the blower is capable of delivering enough air for a 4 ton a/c unit. However, the blower is is amultispeed and has a 'blower chart' in the manual that will give you an idea of air flow delivered on all 4 (usually) speeds. You wouldn't want to deliver 4 tons of air across a 3 ton coil. That would effect the temperature drop across the coil and also effect humidity removal.

4 tons of a/c is a considerable amount of cooling, so unless you have a large space or extremely high average summertime temps, I would ask a local contractor to do a heat load calculation to properly match a system to your specific needs.

Every area has a 'design temp' around which a system should be designed. Here in the St Louis area, the design temp for the winter is 5 degrees and for the summer its 95 degrees.

70,000 btu in gas equates to 20 kw in electric heat for what its worth.

Jun 15, 2014 | Comfortmaker G8MXN0701716A 66,000 BTU 80%...

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I have some heat, burners on, is there a way to get more heat air filters clean i dont know what to do


If you are using a pleated or high efficiency type filter, that is a problem, the high efficiency filters
actually restrict a great deal of airflow, a AC unit requires 500 cubic ft per minute of airflow per ton of refrigeration capacity, 500 sq ft of home per ton generally = 1500 sq ft home has a 3 ton unit or needs 1,500 cfm of airflow, both in heat and cool modes, Honeywelll Enalysises prove these filters even when new reduce up to 500 cfm of airflow, effectively making a 3 ton system a 2 ton in output due to airflow restriction, try removing that filter with the fan on, it likely is pulled in sold with a huge pressure drop caused by tj filters obstuctive flow capabilities.
And 755 of all A evaoprator coils have been plugged or restricted by dust , dirt, oils from cooking, cigarrettes, running with no filter etc, a chemical cleaning of the evap coil above the firnace, or brlow it is indicated as a possible issue. Use the cheap 99 cent seee through filters we used to use

Dec 27, 2010 | Honeywell Programmable Thermostat Heater

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What is and how is find out cfm for 5ton air conditioner


12000 BTU is 1 ton
300 - 350 CFM in 1 ton depends on mfg.
Cfm and Tonnage of Refrigerent is are different units, then how these two units can be compared

Cfm means air flow per cubic meter per hour.

Dec 14, 2010 | Cfm Daikin R410a Split System Air...

2 Answers

How do you calculate cfm for a room when sizing a hvac system fr a residential


their is a chart that homedepot use to give in a/c dept may still be their but a 6" run is about 100 cfm this will cover 10x10 1 sq inch is 1 cfm 1 ton is 400 cfm a gas system is 400 per ton and a heat pump is more like 425 but is best to figure the 400 cfm for both say you got 12x10 room that is 120 sq ft so you need around 120 cfm and if the 6" duct is 100% hard pipe with no flex you can get that if you balance your air if more help is needed email pendletonheatandair@hotmail.com please give me a vote and rating

Sep 22, 2010 | Cfm Heating & Cooling

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Does not seem to be sufficient cool for a 1600 sq ft manufactured home coming from the Coleman unit installed. Some vents more air, others less air. Unit runs without stopping ever. Can you give us some...


Hi John, depending on the size, I would need the model number from the outdoor unit if it is a split system, you should have 400 cfm per ton of cooling. If you have a 1600 SQ' home, and a 3 ton unit, 3 x 400 cfm is 1200. It would be to small. There are 12,000 B. T. U.'s of cooling per ton. 2 tons would be 24,000 b t u's. 3 tons would be 36, 000 b.t.u.'s. Also, most contractors put lever dampers in the duct work that can be adjusted. They will put a red flag where the lever is and we can adjust the flow to balance out the house. I don't know where your ducts are, under or above, but with a good light find the crawl space and check it out. Get the model number and call it in to get the tonnage or send it to me and I will tell you. It will have a 024, 030, 036, 042, or, 060 in the number, MODEL number and figure like I told you above, 12,000 per ton. 060 would be a 5 ton. This will let you know if the unit is the right size or not. Please rate me on this and I know you will be kind. Thank you John.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor
PS CFM is cubic feet per Minute.

Aug 05, 2010 | Coleman Heating & Cooling

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Ineed to now how many ton is a rheem model number rbhc-14jo7nfd air handle


Hello, that unit is 800cfm on High speed. One ton of cooling requires 400 cfm. Thus your unit is a 2 ton capable air handler.

May 19, 2010 | Heating & Cooling

2 Answers

How many BTUs needed to cool a porch 6'x15'x9 w/ lots of glass?


where do you live?  without further knowledge I'd say 16-20k BTU. 

Mar 15, 2009 | Heating & Cooling

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In Dec 07 I had a complete Carrier AC/Gas Heating System installed in my home to replace my original system when my house was built in 1983.We upgraded the new system to 3-TON AC as the old AC was 2 and...


Air conditioning requires 400 cfm (cubic feet per minute) per ton of cooling so your old 2.5 ton system would have required 1000 cfm and your new 3 ton requires 1200 cfm. This is not a big change, but if your ductwork is too small it could cause problems. The best way to check to see if airflow is the problem is to check the temperature of the air going in to the system and then check it when it comes out. Take a temp reading with a reliable digital thermometer at the return grill ( the vent that is physically the closest to the furnace that is sucking air in). Then take a temperature reading at the vent that is physically closest to the furnace and that is blowing air out. The target range is for the air coming out to be 18-22 deg F colder that the air going in. If the air is coming out is more than 22 deg colder then there is not enough air moving through the system. If the air is coming out is less than 18 deg colder then the problem is with the system. Potential problems range from improper refrigerant charge or incorrect refrigerant metering to wrong coil/volume ratio which is essentially mis-matched equipment. It sounds to me like you have a company that doesn't really have much of a clue what they are doing. When the company I work for changes equipment in a house to a larger capacity, we always check the ductwork and do the math ahead of time to make sure that things will work rather that throwing things at problems later. Also, when you check your temps turn the system on and allow it to run for about 10-15 min first so that everything has a chance to stabilize and the ductwork has a chance to cool down.

Jun 30, 2008 | Carrier Heating & Cooling

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