Carpenter, concrete, electrician, plumber. And now HVAC. You go girl. Mad skills as always. Cheers

@AprilWilkerson

7 ай бұрын

Thanks! Glad you enjoy my channel. Thanks for watching.

@andrewfreeman88

7 ай бұрын

You might know this, but she get a lot of help along the way like a guided tour. But good for her.

I am an HVAC guy and i have much respect for you for tackling this job yourself.

@AprilWilkerson

6 ай бұрын

Thanks! And thanks for watching.

So far I’ve installed 6 of these units. Three on the last house and three on the new house. I always use 2 ton separate units this way if a compressor goes out I still have some what of air from the other units. Self taught, now I’m teaching neighbors. Never a problem.

I replaced my office hvac & one in a rental house. Although the attic units were very accessible, it was still easier to replace just the coils & fan elements inside the old sheet metal boxes than lug the whole new units upstairs for the office or thru a ceiling crawl hole for the house.

Ok is there is there anything that April hasn't done? The AC isn't only cool thing in attic. 😎 😊👍👍

I like how you don’t let your fears prevent you from tackling projects April! Congrats on a successful installation! 👏👍😃

@AprilWilkerson

7 ай бұрын

Thanks! Yes, although nervous it's best to jump on it. Thanks for watching.

Also you have several kinks in your flex duct that is causing an airflow issue. You don’t want hard turns or kinks from the strapping of the flex duct.

When working in an inclosed area where this is fiberglass insulation, some kind of respirator would be a good idea because as you move around, fine fibreglass dust becomes airborne.

I've been watching this channel diyhvacguy and have learned a lot from his videos as well. If you have a working unit, you can self recover the refrigerant into the condensor. Someone will have to recover it from that at a later date. Great information in this video. I always look forward to see what your doing next.

Good choice and good job on the heat pump install. I installed a Mr Cool system in my house and am very happy with it. Don't forget to send in for your Mr.Cool hat! lol

You should use duct mastic in addition to the foil tape to seal the ductwork.

@busterulmer7092

7 ай бұрын

Totally agree with the mastic suggestion. You might even want to add a strip of foil faced insulation to add a little more R-value and to lessen the chance of sweating during summer heat. You did a very good job overall

I wish you'd taken advantage of the opportunity to install a MERV 13, 4-inch thick, pleated air filter. It looked like your 1-inch filter was just a moth-stopper. The higher efficiency filter would be better for allergies.

Great video as always! Helpful life saving meter tip in the future. Prior to assuming a piece of equipment is no longer energized is to do a live-dead-live test. Confirm your meter is working properly by testing it on a known love circuit, followed by the de-energized circuit you are validating. Followed by known live.

If you want to save money on the lineset covers I found using a gutter pipe is just and nice looking and saves a ton and easier to work with.

5) A vertical condenser gives you a shelf to set things on should you be working in that area.

Kudos to you; you amaze me with every video! A couple things to mention; It gets hot in those attics in the summer time. Seriously, heat stroke in 15 minutes! Also, in the south its pretty common to have an attic AND a crawl space (like a basement but not as high, and with a dirt floor). Most crawl spaces were not built with ease of access in mind, though I built my house myself and built it with EOA at the top of my list, since I was in a service job for 25 years! Third, many 2-story homes have separate units up and down for more even cooling/heating. Ours does and I wouldn't have it any other way! Total control of each floor; it makes a huge difference!

Would love a followup video on how you chose the unit you did. I'm trying to get my a/c unit (both inside and out) replaced and this video gave me a huge confidence boost that I could do it myself. Thanks and love your videos ma'am.

I recommend running a 2”thick filter. It will facilitate less static pressure in the system which makes less resistance on the fan, more effective heat exchange. Wish they had this product when I did mine myself.

@ron827

6 ай бұрын

Wouldn't a thicker filter create more resistance, to air movement, thus "increase" static pressure?

@GarageGeek

6 ай бұрын

@@ron827 its actually the opposite because thicker filters have more surface area, static pressure is is a function of filter surface area and flow. At a given flow rate, a filter with more surface area will have less restriction and therefore decrease the static pressure.

Nice job April, im an HVAC Contractor and after seeing this video i would hire you in a heart beat to install new ac systems. You did amazing, i am amazed on how well you did. Thank you for sharing!

@AprilWilkerson

4 ай бұрын

Thanks! I definitely do my research before tackling a project. Thanks for watching.

I saved $5000 by doing it myself, probably a 3hr job I fabricated the wall mount too. Doing research took 8 hours of research sifting through inconsistent videos comparing to the manual for several afternoons. The 30 videos I went through turned out to be a huge time waste I should have just studied the manual, where I live most professional installers don't follow the book after learning it myself.

@mattsnyder4754

7 ай бұрын

If 8 hours of research was enough to “learn the book yourself,” there would be a lot more HVAC techs in the world.

@queenredfromthequeencity

7 ай бұрын

Is that 5k in savings including the cost of your labor. 11hrs of work on this project would be a high labor cost so saving 5k is truly impressive

@Realism91

7 ай бұрын

@@mattsnyder4754 I'm the kind of guy who'll try anything if I have the instructions and the right tools or can afford them, I replaced or timing chain and timing chain balancer in our car before we had to take a whole section of the motor apart and torque 30 bolts approximately I ran into a spot were I needed a special tensioning wrench and welded one from stuff I had, the job was successful. But I agree not just anyone off the street can do an install because there's way too much half baked into available, but I've seen local pro's look like they learnt how to install from KZread using patio blocks on grass as a base is not acceptable here and there do it and within a few years the outdoor unit looks like the leaning tower of Pisa, the guy across the street from me had a HVAC company install his and that had to service it 8 times it still sounds like a jet plane you can hear it way down the street. I seen a really good This Old House episode where they skipped the manual J and used rule of thumb and put in the wrong size and the guys utility bill was way higher than all the neighbors who switched, 3/4 of the companies here rely on rule of thumb. Anyways everything I mentioned is where I am it may be better where you are, when you can't trust people you learn to be a good researcher.

@Realism91

7 ай бұрын

@@mattsnyder4754 It's only a 1 year course here.

As I’ve often thought over the years, I wish you were my neighbor ❤️

This is awesome. I installed two home heat pumps to replace a single heat pump that did two floors in 2010. The price was the big reason but not only did I have to learn all the electrical, plumbing, and duct fabrication but I had to learn how to braze the copper to include doing a tripple evac before getting a tech to come check the charge. A few years later I added a mini to the living room so it could be kept slightly warmer when people were in there when it was freezing out. That didnt require the brazing but required using a flaring tool which is problematic for some. This fixes the refrigerant line problems.

Nice work on accomplishing what can be a daunting task! Glad you shared this one with us. Thanks! Keep on building!

@AprilWilkerson

7 ай бұрын

Thanks!

My goodness April another outstanding diy project you have done have a great week be safe

@AprilWilkerson

7 ай бұрын

Thank you! You too!

1. bold DIY in this one... I had never considered doing air-handler and condenser myself but... now i'm like... well maybe! 2. laughed at the roof wall cut out. So many possibilities there... cut a much larger hole... beam it... big window... internal flooring for a "sky den" sort of thing. Or just have a door and add a roof deck for chairs and telescope :)

Great job April. glad you had help and got the unit changed over. Looks really good and should be perfect for your location. Stay safe and keep up the fun projects around there. Star gazing she says, I want a sky lite she says, can't wait to see how that turns out. Have fun !! Fred.

@AprilWilkerson

7 ай бұрын

Thanks! Yes, stay tuned.

I only wish my old system was as new as your old system. Mine is 23 years old and an R-22 system. The refrigerant for it is CRAZY $$$$$$$...

Would love to use my ac for heat pump..... in Alberta it can get severely cold and they do not work. Natural gas burns hot every time it ignites and i can count on my family keeping warm and having hot water. Even my solar panels tell me that they don't want to work the winter.

Nice installation. Well done. Thank you for sharing. Have a great day and stay safe.🙂🙂

@AprilWilkerson

7 ай бұрын

Thanks! Glad you enjoyed it.

April! so glad you made this video! I have been considering doing this myself for a couple years now.

@AprilWilkerson

7 ай бұрын

Great! Glad you found it useful. Thanks for watching.

You are "Always" Amazing and Inspiring April!

@AprilWilkerson

6 ай бұрын

Aw thanks! And thanks for watching.

I have been waiting for someone to show this unit! I am getting on soon!!! awesome job.

@AprilWilkerson

7 ай бұрын

Awesome! Thank you. I'm glad you found it useful. Thanks for watching.

Your a/c guy should have recommended a high level cutout switch in the condensate drain line.

This is inspiring… I can wait to install one of these units…

Great work I'm not sure I would try it! You done a great job 👍

@AprilWilkerson

7 ай бұрын

Thank you!

I've looked at the MRCOOL systems and wondered how DIY they really are. Now I know! Thanks for another great video.

@AprilWilkerson

7 ай бұрын

Glad you like them!

On the old unit, when checking for power on the contactor make sure you are testing at the line side (bottom usually) you won't have any power at the load side unless it's pulled in or its a single pole contactor. I'd recommend getting a torque wrench for tightening those adapters, they have a high failure rate especially if not torqued properly. I think the smaller one on that unit should be 25ft/lb and the larger is 30ft/lb, but id verify that in the manual. When they do end up leaking just flare the lines, get rid of the adapters, and nitro test it before weighing the new refrigerant. I have 2 units that have leaked from those fittings.

I had a heat pump system in Dayton back in the 70s, and it worked flawlessly. As I recall it had an electric heat augmenter when the temps got down below 18 degrees F. You're really going to enjoy how quiet your new system is compared to the old one. My old house had a conventional AC unit for the house and a mini split unit for the master bedroom. When I was standing in front of the mini split condenser the conventional condenser, 50 feet away, was louder than the mini.

@AprilWilkerson

6 ай бұрын

Yes, I'm glad I went with this new system. Thanks for Sharing and for watching.

Very good video I might recommend on the inside of your air handler to put a angled air dam so it doesn't create turbulence by hitting that flat panel it makes the are deflect into your ductwork just a piece of sheet metal put in there at an angle has a deflector

Amazing, I learned a lot from your video! I'm not planning on installing a split system, however your video was well done and very informative. Thanks so much!

@AprilWilkerson

6 ай бұрын

Thanks! Glad you found it helpful. Thanks for watching.

Absolutely Amazing job! Well done!

@AprilWilkerson

6 ай бұрын

Thank you very much!

Viper pan and drain treatment or nucalgon pan tablets have helped me prevent the condensate lines from clogging up. I use them around the beginning of the season. A cutoff float valve in the primary drain isn't a bad idea either and it's cheap. Highly recommend a surge protector.

You make great reviews. Thank you April.

@AprilWilkerson

6 ай бұрын

Glad you like them! Thanks for watching.

Excellent tutorial April thank you.

@AprilWilkerson

7 ай бұрын

I'm glad you enjoyed it. Thanks for watching.

Nicely done April! 😃👍🏼👊🏼

@AprilWilkerson

7 ай бұрын

Thank you!!

I’m a retired master electrician but over the years I’ve replaced my own furnace in 3 different houses, done a few for friends and relatives, installed the entire system in a new house I had built, and installed a complete AC system and replaced the boiler in a 5000sq.ft. historic home I restored. The boiler was the biggest challenge, it was a beast. I dismantled that to remove it because it was so heavy, fortunately it came apart in ten 120# sections once I stripped the cabinet off it. That thing had a 10” diameter copper glue pipe connecting it to the chimney. I got over $400 for the scrap metal from that. I take my time , plan ahead, do actual heat loss/gain calcs to correctly size the unit (most “pros” don’t), and used manual D to properly size the ductwork. Mine all turned out better than most of the “pros”. Skilled trades are greatly under staffed these days so actual craftsmen are hard to find so this is a good opportunity to save some money and likely end up with a better result.

Also check your condensate line for goop.

Very helpful!! Thank you very much.❤

@AprilWilkerson

7 ай бұрын

Glad it was helpful!

I sincerely love your work an inspiration to say the least... Keep on keeping on

@AprilWilkerson

6 ай бұрын

Thank you so much!

Great work April however, the purpose of the mini split system is to get 100 percent of the cool and heat . But by reusing your old duct work you lose 40-60 percent of heating and cooling in the duct work.

@dchall8

6 ай бұрын

I had a couple problems with a mini split: one was the noise that the indoor unit makes in every room. The other was the condensate lines needed monthly maintenance and eventually got moldy. The entire system was horrible to clean out. The mold got everywhere including the interior fan blades.

I have been looking at putting one of their mini-splits in for my garage. I keep going back and forth on short electrical and long line set or vise versa.

I would make that new roof access a nice insulated window with a motorized transom. Having the natural light not to mention a way to evacuate Texas summer heat will cool the house down.

Great work April! Thanks for always sharing with us!💖👍😎JP

@AprilWilkerson

7 ай бұрын

Thanks for always watching. I appreciate the support.

@IEnjoyCreatingVideos

7 ай бұрын

@@AprilWilkerson Your very welcome April! Have a wonderful week ahead 😎JP

Hmmm...Access panel to roof to star gaze...DO IT!

Hands down your best how to video yet impressed

@AprilWilkerson

7 ай бұрын

Thanks! Glad you found it useful. Thanks for watching.

Sorry April, -22F does not cut it in North Dakota or northern Minnesota ( I grew up in ND and now live in northern Minnesota). The record low for both states is -60F, and -30F is expected.

I didn't see one in the video, but being in Texas, I hope you also have a whole-house dehumidifier. AC units generally to a good job at dehumidification, but they have the side effect of making the space cooler...which is fine during a hot summer day, but sometimes it makes it too cold. Dedicated dehumidifiers that are controlled separately from your AC (i.e. a humidistat) are great at improving comfort during the time-of-day/time-of-year when it's a comfortable temperature outside, but it's humid. If you live anywhere in the US east of the Rockies, you should consider adding a whole-home dehumidifier to your HVAC system.

you can also try to add turbin ventilator in the roof, this free energy only use wind to make the turbin works

I run a heat pump and -22 is impressive. I know mine still run in below freezing, just runs a lot longer using more electric. Since you geek out on tech I’ll tell you I automated my propane fireplace and ceiling fan to come on with the heat pump from the thermostat only when it’s colder then 40 outside and it runs half the time now with double the off time in between. Plus the benefit of increasing humidity in the house. So far works great. But I may still install a small Mr cool for the garage this year.

@grasshopperlawnmaintenance8738

6 ай бұрын

This is very interesting. Would love to hear more detail.

@GadgetReviewVideos

6 ай бұрын

@@grasshopperlawnmaintenance8738Well the basics is HomeKit with an 4K Apple TV. I already had a security system with an Aqara HUB on HomeKit/matter so I tied in a temp/humid sensor that is installed under my porch roof. With the gas fireplace and ceiling fan I use Meross HomeKit switches. I took one apart for the fireplace Meross smart switch and soldered a USB A cable to the voltage regulator on the board and installed to control the gas fireplace switch and installed it behind the gas fireplace switch. It’s powered with a small 5V DC USB apple charger. The other Meross switch is for the ceiling fan was installed normal on 120VAC like a normal switch replacing the dumb switch. My thermostat is the Honeywell Lyric T6 Pro WiFi also HomeKit enabled. Ok, so now we have fireplace control, ceiling fan control, outdoor temperature, and thermostat control and status. The rest of it is automation in HomeKit for when its colder then 40F outside and the heat comes one then turn on the fireplace (set at medium) and ceiling fan (set in reverse). Once the heat goes off turn off fireplace, and delay the turning the fan off for 60 seconds. Not sure yet if the const of gas for the fireplace offsets the cost of electric, but I do know the warmth of propane is a lot nicer, humidity stays at about 40% so no need for a humidifier or static shock in the air. The heater only runs half the usual run time when on, and stays off twice as long so less wear and tease on the system. You could put a timer on the fireplace switch running so it only runs for 3 or 5 minutes to give the system heat and thaw the pump. But I fond the humidity stayed better running it the whole time and shorter run time on the heat pump.

Do they make a ground source heat pump kit? Five feet below the surface of the ground is approximately 50 degrees all year long which is plenty of low-grade heat to be had without having to super stress the system in -20 degree. If one owns a decent size backhoe or excavator to dig trenches for the heat exchanger coils barriered in the yard the cost drops to a reasonable level...

You should of connect the drain pan line to the outside so if water does get in pan it can drain out just in case that flow switch goes bad

I guess April should be the month when you were born ❤. Great job ❤🎉just think about a big solar system should be good to feed for your AC system. A perfect 👍 house 🏠

No April you are not normal. You're very awesome one of a kind person and I love watching your projects come together. Great job April and thanks for sharing this project. You're appreciated🤙🏾💯

@AprilWilkerson

6 ай бұрын

Thank you so much!

@TheArchaicFuture

6 ай бұрын

"let's cut a hole in the wall!"

Not a criticism of April or of this channel, but two observations about electrical norms in the US which I find fascinating. Instead of "disconnect box", which is four syllables, why not refer to that as an "isolator"? Also on the topic of the electrical side of things, I find it amazing that those wire nut things are permitted. They just look like such a bodge, and a fire waiting to happen. Whats wrong with a bit of terminal strip, or even a wago connector?

@AprilWilkerson

6 ай бұрын

As far as my words of choice, I try to use words that someone who's not familiar with the type of project, would instantly recognize and remember. Definitely "Disconnect Box" would stick in their memory whereas Isolator may not. Thanks for watching.

@daveash9572

6 ай бұрын

Thanks so much for taking the time to reply. Just to clarify, my comment really was not intended as a criticism of you, more of an observation. Your countryman Adam Booth from the Abom79 channel uses the same term "disconnect box", so it makes sense that this phrase would be easier for viewers to understand. Here in the UK however, the word "isolator" is quite commonly used - for example if a bathroom is fitted with an extractor fan, there will usually be a labelled switch, which can be used to disconnect that device from the electrical system, just outside the bathroom (our 240v power and regulations do not allow switches other than pull-cords or sockets to be installed in bathrooms). Those are labelled with the words "Fan isolator", or sometimes simply "Isolator", so the word is in common usage over here. Similarly, I have noticed other KZreadrs describe an electrical outlet as a "receptacle" whereas that word is not in common usage here. We would call it an outlet, or most often a socket. As for "wire nuts", I have seen your fellow countryman, Adam Savage (both examples I chose were called Adam!) use those for various projects, but i have to say that they look risky to me. I for one think a screw terminal strip is safer and easier to service. Anyway, fascinating video. Thanks for making it!

Let me start off by saying “I hate you”, as an HVAC Contractor, you are taking food from my children! But, I must say, from what I’ve seen on this video, You did a great job. I do recommend “sealing” the tapework with the white mastic(we generally call it “mud”) as the heat will “melt” the gummy stuff on the back of the tape. You did a better job than a lot of installs I’ve corrected by “professionals”. I congratulate you!

@AprilWilkerson

6 ай бұрын

Ha! Thanks! I'm glad you enjoyed it. Thanks for watching.

@kylemann6234

6 ай бұрын

Up the Fridgys 💪💪💪

@fyrwerx4485

6 ай бұрын

Your business is safe. My big takeaway from this great video is: There's no way in (you know where) that I'm ever doing this as a DIY project!

@jayjudd6518

6 ай бұрын

😢😢 I’m too old to do my own work had to pay for professional. Boy is there crazy prices 7,500 to over 14,000 bucks for the same thing. 😊😮😢 did I mention it was a one day job. No duct work. 😅😊

@dougm5186

6 ай бұрын

@@fyrwerx4485 👍🏻😊

I have watched your channel for years. I always enjoy the content. I think you are fearless!!! I always look forward to your new video wondering what you are going to do next! Timothy

@AprilWilkerson

7 ай бұрын

Awesome! Thank you! I'm glad you enjoy my channel. Thanks for watching and for staying along for the ride.

I bought this unit and in the process of installing. I really wish someone would do a detailed video on how to do the ductwork

Your star gazing door is a FUN idea, and so COOL April! 😎😃😉

@AprilWilkerson

7 ай бұрын

Thanks! I think so too!

It gets a whole crap ton colder up north than -22F! ND, MN, WI especially

@brendancurtin679

2 ай бұрын

There’s generally auxiliary heat for when it’s too cold (usually resistive coils). But the heat pump will still be able to provide the majority of your heat throughout the year.

I really enjoyed your video. Can you provide specifics as to the make/model of system you installed? How many tons of HVAC did you have and how many tons did you replace it with?

Good video and informative ! God Bless !!!

@AprilWilkerson

7 ай бұрын

Thanks, you too! Glad you found it useful.

unbelievable!

Mam I like your diy thanks to your channel I learn a lot god bless you

@AprilWilkerson

7 ай бұрын

Thanks! Glad you enjoy my channel. Thanks for watching.

Added bonus, no issue with lighting after lol

I would mostly definitely still pressure test to ensure those lines sealed tight. And these dont require the lines to be vacuumed below 500 microns? That seems wild. I would assume having the excess moisture could still cause non condensables and create issues in these systems. Maybe im wrong. Ive never been hands on with one of these Mr. Cools. Interested to see how it works now

I installed a Mr. Cool mini split three years ago, and I have been pleased with it. The HVAC installers constantly tell me that "I hope you can get the parts when it eventually breaks."

@paulmaxwell8851

6 ай бұрын

I know......but a MrCool system is about 1/3 the price of a professionally installed system from Lennox, Mitsubishi, Fujitsu etc. The HVAC industry has priced itself out of many jobs.

@jonsaircond8520

6 ай бұрын

These are 10 years systems if you get more than that its a bonus. When saying these most all mini split systems. Biggest problem is parts aren't accessible in our "normal" supply chain. Extra effort extra time and when you finally get the part its for a customer that wants Diy pricing so most of us just pass. I say good for ya'll doing your own stuff

@binglebongle8601

6 ай бұрын

@@jonsaircond8520 Who is "us" in this situation?

@jonsaircond8520

6 ай бұрын

@@binglebongle8601 Guess any in the business that I know of would be "us" And based off the number of calls a year I get requesting me to help a internet bought unit. After I decline you get the frustrated well who does..... um I'm not sure. I live in one of the most competitive markets in the country so shouldn't be hard at all. I install a average of 70 mini split systems per year I'm not interested in doing any I don't control what was purchased or where I can get warranty parts at. Such as had a part I needed and since it was a unit I install basically every week I just got it off a new one I keep in stock in my shop.

Not a fan of the return pan off I would have done a reduced angled as not to choke one side. The theory is that the motor will tilt slightly over time where the pan off is due to air turbulance. This instance its a slight difference and I dont see it being that much of an issue, but if yours is more then 5” panned off then think about making a transition piece with a filter rack

Wow you have a ton of insulation in your attic! I'm in Florida and that's way above code here.

Very good video as usual.

@AprilWilkerson

6 ай бұрын

Glad you enjoyed it

Great job, I learned stuff even though I done a thorough job by the install manual before on a smaller system.

Awesome job, as usual! Any chance you could provide the link or product name to that specific setup?

What do you do to plug the hole from the porch to the attic (where the line set comes out)? Do you use the same Barrier foam?

I can confirm that our air source heat pump works very well at below freezing temps in the UK.

@AprilWilkerson

4 ай бұрын

Awesome! Thanks for sharing and for watching.

My heat pump is worth its weight in gold. Just the money savings alone are significant. Better operation all around. You did a fantastic job thank you for sharing.👍♥️

@AprilWilkerson

7 ай бұрын

Glad you enjoyed it! And thanks for sharing and for watching.

Oh wow you don’t have to pull a vacuum first. May need to look into this for my next unit.

You had it evacuated. Good on you.

Awesome alternative to traditional systems

@AprilWilkerson

7 ай бұрын

Yep! I'm excited about it for my house. Thanks for watching.

Where there's a will there's a way! You knocked this one out of the park!

@AprilWilkerson

6 ай бұрын

Thanks!

You really should insulate the underside of that roof to keep the space that air handler is in at a decent temperature. It will also cover up those roof nails so you don't poke yourself working around them.

There is also a switch that drops in the top of the drain line that if it backs up in the line it will shut the air handler off.

We have to get you going with a whole home power back up system. Please reach out!! Love your show

Very impressed AW.

@AprilWilkerson

7 ай бұрын

Thanks!

Remember when you add a coupling or fitting to PVC it creates and area where water and mildew can become trapped check your connections and make then as little as possible

April, what's the seer rating on the unit you installed? I really enjoyed this video!

The white insultube with gray inside around the line sets, corrodes the copper and causes refrigerant leaks.

bravo!

I'm not a fan of skipping the leak test and you are supposed to torque your flare connections. Also we lose our rebate if we DIY. I also don't like the excess line set coiled up, I think it causes issues.

So how a AC works is it takes all the hot air in your house and dissipates it outside through the condenser. Whatever hot air is still left in the house the blower fan in the air handler or furnace however you want to say it blows the hot heat over the evaporator coil cooling the air. A heat pump works in reverse it takes the cold air out of the house and the cold air that’s left blows over the evaporator coil that’s now super heated warming the air and now the condenser is outputting cold air. It can do this with a reversing valve. Heat pumps don’t work in colder climates because the condenser is outputting cold air and if the outside is also really cold they can freeze up.

April: This task IS DIYable... Also April: LET'S CUT A HOLE IN THE WALL!!! :)

currently waiting for my current unit to die and creating a small fund for this, would love to know the energy difference you have seen in the last month.