When you use a infrared thermometer on a HVAC unit, you can not see the air temperature. That devices measure surface temp. So when you see 80+ degrees on air supply on the unit, that means you get much more than 80+ from it. As a professional, I can say Gree is a very good brand and mini split systems are much much more efficient.
I also have a question about the termperature. The unit that you show is fairly clear of snow. Bad storms in the Boston area (and outside) can provide snow drifts with 2 feet or more of snow easily. Are special covers or protection needed to be build around the units for these types of situations? I'm concerned that an overnight night storm will cease the unit and leave us without heat that night and possible the day after? I'm reading and finding videos that mini splits will cease and freeze up with minimal snow coverage and even a film of ice over a unit will prevent it from producing warm air. Should a back up heat sytem be considered - such as baseboard heating or other?
Yes snow drifts happen, but unless you are putting these units in an area prone to it, I think you would be okay. They do sell mounts for these units to be off the ground. There are also covers but they are mostly designed to deal with high winds. I found a decent article about placement: blog.totalhomesupply.com/mini-split-placement-guide/ More than the snow, I think wind/freezing rain or something that will hinder or prevent the de-icing cycle the compessors run is the greater concern. If the unit has power and enough protection from strong winds so the unit can properly do a de-icing cycle then the unit should be able to run a heating cycle right afterwards. Personally, a backup heat source is never a bad idea for New England winters, because no power also means no heat for these systems. My wood buring fireplace is my back up source for my 1960's cape style house, which I only use in emergencies because I hate the clean up and maintainence. I also recommend pairing any new system with Insulation from Mass Save as well becuase that will save energy in the future and keep your home warmer/cooler for longer in the event of an emergency. Hope this helps ~Chris
Hi. And how much energy does the heat pump uses to extract that heat? Especially if you factor the cost of the heat pump (compared to resistive heaters) which will last 15 years at most. 🤔
As a lowly Realtor, those calulations are a little beyond my specialies. I can tell you that these systems have gained popularity over the years becuase of their abilty to move heat/eanergy and not create it. As for the longevity, I think that depends on this owner and if they take the care to maintain the system. I showed a house last year that had a roughly 40 year old gas boiler still in good working order...
@@chrisraohomeaficionado9979 i work in hvac fied that’s why i was wondering. Boilers may last up to 100 years (they work with the low pressure) but ac’s and heat pumps work with pressures 30-45 times!!! more than boilers. And now manufacturers dont produce long lasting equipment. 10 years of operation is their goal 😂
@@qeesher That's a good point about the pressure and I agree about some industries building in planned obsolence, but I hope that is not a thing with the quality manufacturers
The energy to move heat from the cold source to the warm space depends on the temperature difference. Typically when moving the energy from 40F outside air to 70F inside air, you can move 3 units of energy using 1 unit of electric energy, so for heat pumps the energy you get is the 3 outside plus the 1 electric, giving a performance of 4 to 1 unit paid for. As that temperature difference gets colder outside, that drops off. My Gree is rated down to -4F, it may still be able to extract some heat, but typically this drops off to a performance of 1 to 1, and at that point electric heat is switched to.
Hi, just got done with 5 outdoors units and 7 indoors unit Gree gen 4, in totals of 72k btu. Im keeping tracks of the electric meter outside my house. Im average around 35 KWH per day during mid July for entire home of electricity usages. What kind of KWH should i expecting for the winters? i live near NYC. Thank you.
As a professional installer do you also have issues with gree customer service? And is it true parts are hard to get? Warranty integrity any good? Longevity of system? Thanks man!
I can't speak to the ease/difficulty of dealing with customer service or warranty issues. But I've had my basement GREE system since late 2015 (and it's now March 2022) and have had no issues with it at all. It is wonderful, very quiet, and very efficient! I've had it serviced 1 time by a hvac tech in 6+ years of owning it. So based on that experience I have no hesitation recommending GREE mini split systems. My only small gripe is with their app (and connection issues) on the wifi-enabled models. Other than that, they are phenomal!
I just had this installed. In the owner's manual it does not show how to get the louvers to swing left to right. Would you please share how to do that?
I just installed a unit sold with the Trane/American Standard brand, however, it is a Gree manufactured unit. Mine is a 3 ton unit. It is the same as their Livo model. My remote has louver control for up and down, and left and right, however there is no motor in the high wall unit to move the louvers, there's just finger levers to manually set them. So this feature is an option, and yours may not have that feature.
It's a refrigeration system, that can operate in cooling or heating mode. It requires some skill and tools to DIY this install. The outside unit comes pre charged with refrigerant. The line sets between the indoor units and this outdoor unit requires the air to be vacuumed out with a high vacuum pump. Most people will have to pay for a HVAC technician to install this system. But the skills are learnable from youtube. There are some sellers of pre charged line sets that use special connectors at the indoor and outdoor unit. when the connections are tightened they pierce through thin brass foils to make the connections. Then the main valves at the outdoor unit are opened. If there's a leak, your back to fixing it, and removing the air that may have gotten into the system. Air will damage the system, as it's called a 'non condensable'. You only want refrigerant, no air, and NO water vapor, that's why a vacuum pump is put on the system and a low vacuum that removes all the air and water vapor is required as part of the system setup. Also the install looks like crap if you have 25foot of line set, and only need 12foot to connect it. You have a big coil in plain view, and it looks unprofessional from an install view. Hope this comment helps.
I've been doing a bit of research. It appears that Gree is a lesser product than the major three companies: Daikin, Mitsubishi, and Fujitisu in terms of air splits. I know that MassSave offers a rebate for the installation and it looks like Gree is the contract of choice, but is it possible to use the MassSave program with a different and more quality product - such as apply the MassSave and select a Daikin product instead?
I can only speak of my experience, but when we had that record setting negative wind chill day in Feb 2023, all of the installed Gree units continued to perform as intended that day. I had heard a rumor that Gree was/is doing the manufacturing for other brands, but to answer your question I think as long as a system meets the efficiency requirements set by Mass Save then I would think the rebate applies. To be sure, the Mass Save website/customer support would be the best resource: www.masssave.com/residential/rebates-and-incentives
This was a Multisplit system with 4 zones working off the 1 compressor outside. I don't know the power levels of each from this location. I do know that this developer likes to use the 22 Seer models and in the new construction development we are doing with them, that calls for three 12k ceiling cassette units for the heating and cooling running off the compressor. www.greecomfort.com/our-products/ceiling-cassette/#documents
I assume by kW you are asking if these you heat strips?? If I'm understanding you correct, they do not use heat strips at all and still put out a lot of warm air very efficiently. These systems are FAR more efficent than a traditional central hvac system.
This is the ceiling cassette units we are installing CAS12HP230V1AC at our new contruction. However that is not what is shown in the video. I do not know know the model numbers of the units shown except that they are similar in capacity and efficency. drive.google.com/file/d/1O3TmCqXJTRfiEI_i9_3s17XvyR6rgfAL/view
What is pointless? Talking about how the thing works? The energy calculations are available online for most units. These things bring in up to three times more energy than they use. Once it gets very cold outside that converges toward one to one at which time you can just bring in a back up source. Where I live resistance heating is still cheaper than running my oil boiler.
