Tag Archives: MrCool

Pre-Charged Line Sets Are For Real, Right?

pre-charged line sets

Pre-charged line sets aren’t exactly a new innovation in the HVAC industry, but they’re not exactly widespread either. When we tell people our MRCOOL DIY line sets do not need to be vacuumed down, plenty of installers out there, professional or otherwise, just don’t believe it. But, hey, don’t take my word for it!

Pre-Charged Line Sets Are the Real Deal

A picture is worth a thousand words, so a YouTube video has to be worth like a novel or something. Anyway, check out the comments in our 2nd-generation DIY install video and you’ll find plenty of folks who don’t quite believe. If you don’t want to take the time, then I’ll sum up the highlights for you.

No vacuum? Are you kidding me?” – St2288

How is that possible?” – E Money

Don’t you have to use a vacuum pump or purge the lines?” – Juan Silva

Wait a sec, no purge of the line-set or vacuuming them down first?” – Butchtropic

Yeah, there are a few skeptics.

So, Are Pre-Charged Line Sets Real or What?

Yes! For the last time, yes!

We here at MRCOOL did not invent pre-charged line sets. They’ve been around for years, but were mainly confined to the modular and mobile home market. That might be one reason why so many people have not heard of them. Don’t worry! Pre-charged line set technology proved itself years ago.  Basically, all we’re doing is applying them in an innovative way.

Innovative How?

One or two manufacturers have used a version of pre-charged line sets on ductless mini-split units before, but we are proud to say that no one has taken it as far as we have. The MRCOOL DIY 2nd-generation Ductless Mini-Split Heat Pump is truly cutting edge technology. Our unique approach makes line sets easy and safe to handle. Best of all, any smart homeowner can put one of our DIY units up in a few hours with no specialized tools.

It’s like they’re comfort made simple or something.

Tiny Home Cooling Works Best with MRCOOL

tiny home cooling

Tiny home cooling and heating is, obviously, an important consideration. If you’re thinking about joining this growing movement, let us explain to you exactly why a MRCOOL ductless mini-split heat pump is your best option.

Tiny Home Cooling & You!

Good planning is a critical step when transitioning from a conventional house to a tiny home. Make sure you don’t forget how you’re going to stay warm or cool! The compact requirements of a tiny home mean you can’t rely on conventional central air conditioners or furnaces. If you tried, one of those units would take up a huge chunk of your livable space.

Which is bad.

You don’t have a lot of space as it is. The last thing you want to do is wake up in the morning and crawl over the furnace to get out of bed.

You need an air conditioning and heating system perfectly designed for non-traditional living.

MRCOOL Ductless Mini-Split Technology

Okay, so we didn’t actually design our MRCOOL mini-split heat pumps for tiny homes, but they work great anyway! Ductless technology has a ton of natural advantages compared to old fashioned window units or portable systems.

The biggest advantage is that, of course, a ductless unit is designed to work without air ducts for ventilation. Your tiny home is not going to use air ducts, so you need that sort of system.

Secondly, the only part of a mini-split that needs to be inside your tiny home is the air handler. This will not take up any of your valuable floor real estate. You can mount the air handler high up on an interior wall to stay out of your way in your tiny space.

Thirdly and perhaps most importantly, MRCOOL ductless mini-split heat pumps are designed for energy efficient and eco-safe operation. We manufacture some of the most efficient ductless units on the market, and all of our products rely on R-410A refrigerant. R-410A is a non-ozone depleting, chlorine-free substitute for last generation’s Freon. Tiny home living is about shrinking your footprint, and that should include your energy bill and your ozone impact.

Remember, with a MRCOOL ductless heat pump, you can live the tiny life you want without the sweat you don’t.

Eco-Safe R-410A Refrigerant & MrCool

eco-safe R-410A

Eco-safe R-410A refrigerant is the new standard for American air conditioners and heat pumps. As you might expect, it’s also the main refrigerant we use here at MrCool. The government, of course, required companies like us to adopt refrigerants like R-410A, but do you know why?

The answer might surprise you. Or it might not. I really have no idea how informed you are about international chemical emissions agreements.

Eco-Safe R-410A, Freon and That Ominous Hole in the Ozone Layer

Have you heard of the Montreal Protocol? It’s the reason why eco-safe R-410A and other ozone-friendly refrigerants are in common use today. You can trace a straight line between our use of R-410A and the agreements made in Montreal way, way back in 1987. It was there that an international meeting of world leaders agreed our civilization must scale back our use of ozone-depleting refrigerants like Freon and other chlorofluorocarbons.

Which is a hard word to work into casual conversation. You should try it though. People love stuff like that.

Anyway, the world back in the 1980’s was understandably worried about the giant hole growing in the ozone layer above Antarctica. Mainly because the ozone layer is the part of the atmosphere that stops solar radiation from mutating us all into walking blobs of cancer. Which is bad. The wide spread use of CFCs had helped grow that hole. It took a lot of hemming and hawing between world leaders before everyone agreed a slow, painful death from solar radiation was bad, so maybe let’s stop using all those CFCs.

And that was a problem in and of itself. The world used a lot of CFCs in everything from hair spray to, surprise, air conditioners. Now, obviously, no one wanted to give up sticky hair or air comfort. Civilization needed a chemical that could do all the things CFCs did, but, y’know, without all the potential for inevitable death.

Enter eco-safe R-410A! R-410A is a chlorine-free refrigerant with minimal ozone-depleting ability. In other words, you can use it without worrying about eventually destroying the entire human race in a solar radiation-driven apocalypse.

So, that’s nice.

I’m Back, Guys! I Know You Missed Me

I'm Back

Yep, I’m back!

Look folks, let’s just agree that mistakes were made this past winter. And by mistakes, I mean some incident may have occurred in a non-extradition treaty country which caused me to become a fugitive from international law. Only briefly, though, and that’s the main thing.

But Now I’m Back and Better Than Ever!

I know you’re happy I’m back. It means our fantastic blog can get going again! Who wouldn’t be excited about that? Those Interpol officers I evaded for months probably are none too pleased, but I’m not going to let that get me down!

We have got a lot of catching up to do. Despite my cat-and-mouse game with you-know-who, the company has a lot of new products rolling out this year. I’m, of course, excited about all of them.

MRCOOL PTAC

Looking for a packaged terminal air conditioner? Hey, wouldn’t you know it, we’ve got a brand new stock of MRCOOL PTAC units ready to ship to you on a moment’s notice! Convenient how that works out isn’t it?

These PTACs are, obviously, pretty awesome units. They’re quiet, efficient, and reliable. If you need heating and cooling for an apartment or a new development project, you really need to take a look at these sweet systems. Each one comes standard with R-410A refrigerant, auxiliary heat kit, a 2-Year Limited Parts Warranty, and a 2-Year Limited Labor Warranty. Installation is simple, and maintenance is a breeze.

Plus, you can’t beat the price tag. These cool machines start out at $655.00. $655.00! Can you believe that? I honestly cannot believe it.

Seriously, I’m going to talk to accounting about that right now. With a price that low are we even making money on these? Probably not, and that’s just how good a deal this is.

HVAC Fire Prevention & You!

HVAC fire prevention

HVAC fire prevention is something you should pay attention to. Yes, modern heat pumps and air conditioners are safer than they’ve ever been, but they’re not the main culprit. There is a far more nefarious agent at play that can lead to a disaster like your house burning down. Let’s make sure that doesn’t happen.

HVAC Fire Prevention

Do you know what heating and air system is most likely to burn your house down without a second thought? It’s the entirely too common space heater. Space heaters cause more fires than anything else. An air-source heat pump or conventional furnace is about a billion times safer than a space heater. Okay, that might be a slight exaggeration, but they’re a lot safer.

In short, the number one thing you can do for HVAC fire prevention is to avoid using a space heater. Just don’t do it.

I do realize that answer might be a bit unsatisfying for some of you.

How to Safely Use a Space Heater if You Absolutely Must

First, make sure you keep plenty of open ‘space’ around the space heater. Three-feet or more is a good rule of thumb. Dropping flammable objects like books, newspapers (do people still read these?), magazines, or whatever within that three-foot safe zone is a bad idea. It’s a bad idea, because flammable things tend to catch on fire.

Second, never ever use a space heater with an extension cord. Yes, they can be convenient. Yes, they can allow you to stay warm even on the other side of a room. Yes, they may burst into flame without a moment’s notice. Trust me, extension cords and space heaters are a bad idea.

Third, do not put a space heater on any surface where it might tip over. A space heater that has fallen over is a space heater about to burst into home-consuming flames. You want flat, stable surfaces and ONLY flat, stable surfaces. Everything else is wrong and bad and explosive.

Fourth, shut off the space heater before you go to sleep. Are you worried you’ll get cold at night? That is why humanity invented blankets and dogs. Both of those things will keep you way safer and warmer than a space heater running while you sleep.

Remember, HVAC Fire Prevention is Space Heater Fire Prevention

Safety is not very hard folks. Keep the area clear, avoid extension cords, mount the space heater on a stable surface, and don’t run it while you sleep. If you do those four things, you will be an HVAC fire prevention master. Plus, you’ll keep your house from burning down.

Which is nice.

Air Conditioner Failure & 3 Ways to Prevent It

air conditioner failure

Nothing can ruin an entire week like unexpected air conditioner failure. Everything was going great, then, suddenly, the A/C stops working and the whole family gets crabby. It’s hard to be happy about life when you’re sweating yourself to sleep every night. Plus, who wants to pay a costly repair bill? Ugh.

Air Conditioner Failure – Stop It Before It Starts

Fortunately, there are a few simple things you can do to keep your system running smoothly for years to come.

Check Air Filters Monthly

The single most important thing you can do to keep your air conditioner functional is to check and clean your air filters. Those filters are not designed for you. Yes, they do clean interior air. Yes, that can be good for your health. Again, no, they were not designed with you, presumably a human, in mind.

Air conditioner air filters are designed to keep dust, dirt, and debris away from the sensitive interior components like the evaporator coil. Dirty coils corrode faster, reduce operating efficiency, and make the unit work harder to keep your home comfortable. Those factors can all build up to a colossal mechanical failure.

You, obviously, want to prevent that. Check your filters once per month, minimum. Check it even more if you have a lot of pets or a large family. If the filter is so dirty that you can’t see through it, you need to clean or replace it. Making this simple step a regular habit will keep your unit running efficiently while it helps you avoid a big air conditioner failure down the road.

Pre- & Post-Season Cleaning

Imagine that you leave your car sitting outside for six months. One day you decide you need to drive it somewhere. Are you going to just jump behind the driver’s wheel, start it up, and expect everything to go smoothly? Or are you going to check the car to make sure the tires haven’t gone flat and that a family of badgers hasn’t taken up residence in the trunk?

I really hope you’d at least give the thing a quick glance before you expect it to run.

Your air conditioner is like that car. It sits unused all winter. Bad weather can deposit leaves, sticks, and debris inside the cabinet and clogging the coils. Before you turn the unit on to keep you cool during the summer, you should give your air conditioner a quick clean up. We go into detail about how to do that elsewhere. Rest assured that the cleaning process is not very complicated.

You also want to make sure you clean the unit before you let it sit all winter long. Summer thunderstorms and high wind can dirty up the condenser in the same way bad winter weather can. Plus, a little weatherization will make things easier come springtime.

So, why bother with all this cleaning? Keeping the exterior condenser free of contaminants will keep it running more efficiently and prevent premature air conditioner failure. This step is not less important than periodic filter inspection, but you only have to do it twice a year.

Annual Maintenance

You’re a heating and air expert, right? You’d be able to spot all the small signs that point to a big air conditioner failure coming, right? No?

Well, it sounds like you need to schedule regular, annual maintenance for your unit. Many local HVAC contractors will perform this service for a reasonable fee. They come out to your house, inspect the unit, and make sure everything looks good for the upcoming cooling season. These are the experts that can spot a problem before it grows out of control, and you only need them to do it once per year.

See, I Told You It Was Easy

And that’s pretty much it. Check your filters regularly, keep the condenser clean, and schedule a maintenance inspection once per year. If you do those three simple things, you will ensure a much longer and failure-free air conditioner life.

Thanksgiving Air Comfort For You & Your Guests

thanksgiving air comfort

Thanksgiving is a wonderful time of year. Family and friends come over. Food is eaten, thanks is given, and everyone laughs when that one particular uncle does something ridiculous. But, there’s a lot that goes into keeping your family happy over the course of an evening. Which is why you should spend a minute to thank about how you’re going to deliver real Thanksgiving air comfort.

Maintain Thanksgiving Air Comfort Simply & Easily

November can be a weird month. Sometimes its unseasonably warm, but in other years there’s two feet of snow on the ground. Staying comfortable can be a bit easier said than done.

And then we get to Thanksgiving. If you’re hosting a dinner at your home, you have got to take into account interior air comfort. Now, there might not be anyway to account for your elderly grandmother who keeps her own house a ‘chill’ 98 degrees in summer, but you should take care to keep everyone else as happy as possible.

So, how do you do that?

Ovens Generate Heat

I’m sure you’ll be shocked to learn that ovens generate heat. Yes, of course, I’m aware you already knew that, but have you taken it into account for your Thanksgiving air comfort? No? You should. If you’re going to be roasting a 20 lb bird all day, the oven is going to release a considerable amount of heat into your kitchen. Combined with your central heating and air system, this could turn your kitchen into a really uncomfortable place. There’s going to be a lot of action in the kitchen on the 26th. No one wants to come out of there with sweat stains.

The best way to alleviate all that oven heat is to kick down your thermostat a few notches. You don’t want to turn the rest of your house into an ice box, so do it sparingly. Alternatively, you could close the kitchen vents that normally exhaust heat. A full day cooking means you probably won’t need the help.

Humans Are Hot

You’ve handled the excess heat in your kitchen. Meanwhile, the rest of your house is still quite comfortable and warm. Which is good, but what will happen when your guests arrive?

If you’ve got a big family, you need to account for all those warm bodies moving around, talking, laughing, and enjoying themselves in your home. A room full of people can turn a previously comfortable interior temperature up to unbearable very quickly. How should you handle that?

For optimum Thanksgiving air comfort, we recommend you turn the thermostat WAY down when your guests start to arrive. Don’t go too crazy. No need to set in on 50 or anything like that, but knocking it down to around 60-65 degrees is not out of the question. Yes, this is far more cool than most people would like, but all that body heat is going to more than make up for the heater taking a breather.

But, It’s Warm Outside!

Okay, so maybe you’re dealing with the opposite problem. Maybe you’re in the South and it’s relatively comfortable outside. You’re still going to have to deal with a hot oven and heat-spewing humans. How do you solve that Thanksgiving air comfort conundrum?

If worse comes to worse, you can always kick the air conditioner on. You might not have had to run it in a few weeks, but you could need it now. Alternatively, keep a window open in the kitchen while you’re cooking all day. That should do a lot to drain the excess heat. Open a few more when people start arriving. Maybe break out a fan or two.

And, Remember, Enjoy the Holiday

Hopefully, these simple Thanksgiving air comfort tips will help you, your friends, and family enjoy the holiday just a little bit more comfortably. Good luck!

Winterize Your Air Conditioner

winterize your air conditioner

Right now, Winter Storm Ajax is blasting its way across the country. It’s dumping snow and ice and misery on homes, cars, and, though you might not have thought about it, air conditioner condensers. This storm isn’t special. Your outside air conditioner condenser has to put up with a lot of seasonal abuse. That’s why you need to make sure you properly winterize your air conditioner every year.

How To Easily Winterize Your Air Conditioner

Now, don’t panic, it’s not too hard to winterize your air conditioner. You can do it yourself without any special tools or training. However, if you are a moron, we take no responsibility for anyway you might injure yourself in this relatively straightforward and simple process.

Let us begin.

Your’re going to need some basic equipment to do this job. You’ll need, in no particular order, the following:

  • A simple garden hose.
  • A clean towel.
  • Some pipe insulation (maybe).
  • A dedicated outdoor air conditioner cover or a tarp and some bungee cords.

That’s about it.

Our 100% Easy Winterization Process

First, lots of weird stuff can get blown into the vents during summer – leaves, twigs, grass clippings, candy wrappers, etc. Remove it all and throw it away.

Second, with the big stuff gone, use your garden hose to clean out all the finer dirt and debris sticking to the fins.

Third, let the unit dry out completely.

Fourth, check the pipe insulation. Hopefully, your installing HVAC contractor placed insulation around the exterior pipes. If they did not, you need to attach that pipe insulation yourself. It’s really easy to do. Places the tees and elbows first, then cut the longer sections to fit. You can even buy pipe insulation that is self-adhesive. This stuff isn’t very expensive, so don’t freak out.

Fifth and finally, you’re ready to wrap the unit with some kind of waterproof material. You can go buy an air conditioner cover made for the job or you can easily jury-rig your own. A simple tarp held down with bungee cords will do the trick. All you’re trying to do is keep most of the snow and rain away from the system. It’s not rocket science.

And that’s pretty much it. Periodically check the unit to make sure snow isn’t piling up on the cover and your air conditioner will be in excellent shape come spring.

See, I told you it was easy to winterize your air conditioner!