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Ductless Mini Split Systems… How well do they dehumidify?

March 27, 2020 by integrityairconditioninginc Leave a Comment

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A mechanical engineer friend who designs air conditioning systems told me that ductless mini-split systems do not dehumidify well. Or in engineering speak: O/K for comfort cooling; not so good at latent removal. ​​

 

I have found the opposite to be true if they are operated correctly.  And regarding the whole building, they do not create pressure imbalances like many ducted systems nor are they plagued by duct leaks that tend to create a net humidity increase in Florida buildings.  

 

Regarding settings: There is a humidity control setting displayed on the remote as a raindrop  (see photo).  This setting slows the fan during cooling mode which allows the coil to get colder.  Colder coils condense more water vapor out of the air.  The fan must be set on “auto” to get the full effect.  Setting the fan to high instead of “auto” could have the opposite effect…poor humidity control as in the engineer friend’s example.  Leaving the fan in “auto” is key because these inverter systems have a variable speed compressor which should match the fan speed even if not set to “dehumidify”.

 

A major upgrade in humidity control and energy efficiency is the Hyperion system from Daikin.  Rather than battle condenser air with evaporator air like a Honeywell dehumidifier it subcools the liquid refrigerant in the process and is therefore more energy efficient.  Either of these systems really wrings moisture out of the air.  You can see it going out the drain.  Now I am guilty of “engineer speak”.

Jay Hoover, Integrity Air Conditionins, Inc.

 

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TECO HVAC MOTOR REPLACEMENT PROGRAM

February 19, 2020 by integrityairconditioninginc Leave a Comment

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Tampa Electric’s HVAC Motor Replacement program was developed to improve your home’s heating, ventilating, and air conditioning system.  The program, available to residential customers, enables you to earn a $115 rebate when you have your existing heating and cooling system retrofitted with a high-efficiency electronically commutated motor (ECM).  The high-efficiency motor is designed to make your system operate more efficiently and help reduce your energy costs.

This is usually only done at a time when the blower is in need of repair.

These replacements are just another option.  We offer options for best energy savings and fastest repair and most reliability.  With Integrity Air Conditioning, Inc. you are in control.

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Remote Control of Ductless Mini Split Systems

January 24, 2020 by integrityairconditioninginc Leave a Comment

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To turn on a system the operator (that is you) needs to turn it on at the power button of the remote. (Do you feel empowered?) 
 
If you do not see the vane move you need to do it again and aim the remote at the area of the sensor at the indoor unit.  Note the orange light in the photo.  It lights up “blue” in the cool mode.
 
Set the mode button to cool (snowflake), heat (sun), dehumidify (raindrop), or auto (letter “A”with square of arrows around it.
 
Set the desired temperture.  Dehumidify only slows the fan for a cooler coil in the cooling mode.  Leave the fan setting to “auto”  in dehumidify mode.
 
 
 
 

Auto settings (to alternate between heat and cool without your input​) and programmable settings, such as time/clock) are specific to each model, so read the operator manual if you want to use those features.
 
If the room is deep… or long… with the indoor unit at one end, (rather than wide or square), one might set the fan to high and aim the airflow to the center to reach the furthest end.
 
Much of this instruction might seem obvious, but it is important.  Like if one pushes the button on the remote it will beep and lead you to think that it is in communication or “set”, but it only communicates when airmed correctly.  Think about your T.V. remote, same principle.
 
Lastly the sensor(s) are at the indoor unit (head). There are no temperture sensors in the remote!  Feel free to keep the remote in a drawer for safe keeping. It will not effect the system once you have set it.

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Need a New Air Conditioner? TECO has Heating and Cooling Rebates!

January 17, 2020 by integrityairconditioninginc Leave a Comment

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TECO has a rebate program that may help with the cost of replacing your heating & cooling equipment.  With Integrity Air we process the application for rebate and TECO pays us directly, so all of our estimates are AFTER ALL REBATES.  We take the hassle out of the equation.  Getting a new system can be stressful. We want to make it as easy as possible for you.

Ask us about the program. We will explain your options and make sure you are not leaving rebate money on the table.

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R410a Seems New To Us Now But…..Current Possible Legislation Points To It Being Phased Out

December 18, 2019 by integrityairconditioninginc Leave a Comment

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​​      According to an article in “Todays’s A/C & Refrigeration News”, Congress is being urged to act on HFCs (hydrofluorocarbon refrigerants). 32 members of the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) and the Alliance for Responsible Atmospheric Policy are pushing for the United States to pass legislation to allow a structured and controlled exit from using hydroflucarbon (HFC) refrigerants.

United States companies that produce and use fluocarbons have been preparing for this exit for decades, investing billions in Research and Development to be the first to bring to market the next generation of fluocarbon products and equipment.

This BEGS the question of what is next?  One possible solution: Honeywell makes Solstice N41, ASHRAE designation, aka R466a as a replacement for 410a.  It has a 65% lower global warming potential than R410a.  15 equipment manufacturers are currently testing it in their new equipment.

This is part of why the manufacturers are concerned.  Engineers might test this new refrigerant and design for it to make reliable A/C systems only to find that congress or the EPA demand a zero global potential, not just 65% better. We will post more articles as decisions and policy are decided.

 

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