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Common AC Installation Mistakes to Avoid

Certified AC Repair in San Jose

In the United States, the need for HVAC equipment is around $20.4 billion each year.

Air conditioners can last a long time but they’re bound to stop working at one point or another. Once that happens, you’ll have to replace the entire system. 

If you’re thinking of handling the AC installation yourself, then you should be aware that it isn’t as simple as you might think. Understanding AC installation requires the attention of a professional to ensure everything is done the correct way.

Do you think that it can’t be all that difficult? Then let’s take a look at the most common AC installation mistakes that can happen:

Poor Drainage System

When an air conditioner runs, it creates a large amount of moisture. If there isn’t a way to filter the moisture away, you can end up with water damage to your home. This can lead to damaged drywall, mold, and clogged pipes.

Creating a poor drainage system is one of the more common mistakes that people make. It’s an overlooked aspect that’s easy to forget in the midst of installing.

Wrong Size AC

Bigger isn’t always better. At least, not if it doesn’t suit the size of your home.

One of the top AC installation tips out there is to make sure that its size reflects the size of your home. If you get an AC that’s too big for your home, it’ll lead to short cycling. If it’s too small, you could end up with it overworking itself.

Whether you get an AC too big or too small, both are bad. This causes wear and tear on the unit, which can result in it biting the dust at a premature date.

When looking at an AC unit, you should look at a BTU calculator. A BTU calculator will allow you to enter in the dimensions of the rooms within your home. The calculator then determines how many BTUs your home requires.

Once you know how many BTUs you need, you can then shop around for an air conditioner that can produce that number.

Thermostat Not Positioned Right

Many people don’t realize that where the thermostat is has an effect on how the HVAC system operates. If a thermostat isn’t in the right area, then it will have inconsistencies in its monitoring of the temperature.

First, the thermostat should never be in a spot where it sits in direct sunlight. Sunlight shining on the thermostat can cause the system to think it’s warmer than it actually is. This will lead to the AC system creating the incorrect temperature for your entire home.

Second, the thermostat also needs to be in an area away from doors and windows. Drafts can cause the AC to think it’s either warmer or colder than it actually is. Again, this will lead to the wrong desired temperature for your home.

The most ideal location for a thermostat is in a hallway or corridor. Be sure to make sure there aren’t any air vents nearby that could blow on the thermostat.

You want to make sure the thermostat is in a spot where the temperature will stay regulated. This will help the thermostat gather an accurate reading and help the AC unit operate with efficiency. 

Ductwork Not Sealed

Another common mistake is not sealing the ductwork of the AC unit well. If the ductwork has been improperly sealed, then the AC won’t be able to operate at peak efficiency. 

In fact, you’ll lose a huge percentage of airflow through the cracks in the ducts. If you’re losing air through the cracks, then the unit won’t be able to cool the rooms of your home as intended.

When looking at the ductwork, there should not be any noticeable cracks at all. If you notice any cracks, they should be closed up using a permanent sealer.

AC Unit Not Positioned Right

As with the thermostat, the AC unit itself must be in an ideal area as well. If the AC unit is in a spot that doesn’t suit, then you’ll soon have issues with functionality and energy efficiency.

Where should the AC unit go? The ideal location will be shaded or have limited direct sunlight.

You also want to make sure the unit isn’t crowded by bushes or trees. If the AC unit doesn’t have the necessary clearance, then it is going to struggle with airflow. This means the unit works harder, thus draining more energy and costing you more on your utility bill.

Refrigerant Line Not Insulated

An AC unit must use refrigerant, which is a liquid-gas, to operate. This refrigerant goes from the condenser all the way to the AC’s interior workings. It uses what’s known as a “refrigerant line” to make this journey.

The refrigerant line starts outside, meaning it is exposed to all the elements. This is why it requires insulation.

When you fail to insulate the refrigerant line, it can cause energy efficiency problems. On top of that, it places strain on the operation of the AC.

Without insulation, your refrigerant line is more likely to suffer damage. This can lead to a refrigerant leak. Should the AC unit run out of refrigerant, it will cease creating cool air. There’s nothing worse than your air conditioner not blowing cool air on a sweltering summer day.

Condenser In the Wrong Spot

The condenser in the AC is a vital component of the unit’s overall operation. The less work the condenser must do, the better the AC until will operate. This translates to better energy savings and the AC unit’s overall lifespan lasting far longer.

The condenser should be put in an area where it’ll be out of direct sunlight. The less sunlight that shines on the condenser, the less it will struggle to work. So, when installing the condenser, be sure to place it in a spot where it will have shade.

Use a Professional for AC Installation

As you can see, there is a whole host of considerations to take into account for AC installation. There are many issues you can run into if you make even the slightest error. This is why it’s best to leave AC installation up to an expert with years of experience under their belt.

If you need help with AC installation, then AirPro Experts can help. AirPro Experts is family-owned and has 25 years of experience in installing air conditioning systems.

Make an online booking today to schedule an appointment!

Sameh t
Author: Sameh t

— 29 Comments —

  • Avatar of Erwin Osborne
    Erwin Osborne "The most common mistakes that people make when installing an AC are not taking the time to calculate the size of the unit, not checking if there is enough space in their homes, and not using a professional. This blog can help you avoid these mistakes, Thank you for sharing the article." Reply
  • Avatar of premierairmt
    premierairmt You'll also want to keep your thermostat away from windows and doors. Wind drafts could trick your AC into thinking that it's colder or warmer than it really is. Reply
  • Avatar of Smarterair
    Smarterair Your article is valuable for me and for others. Thanks for sharing your information! Reply
  • Avatar of Victoria Addington
    Victoria Addington I appreciate how this post emphasized that leaving the AC installation to an experienced expert is the best way to avoid errors. Our new house needs an AC system to get it installed. We should follow your tip and hire an AC service to handle its installation. Reply
  • Avatar of Braden Bills
    Braden Bills I want to make sure that my HVAC system lasts a long time, but I'm not sure how to fix it. It makes sense that I would want to get a professional to take a look at it for me. They would be able to determine if there's any maintenance that needs to be done. Reply
  • Avatar of Roger Rogers
    Roger Rogers Repairing your A/C unit yourself is not a good idea, unless you have the right tools, and experience doing this job. This is great advice about your air conditioner. Reply
  • Avatar of calvinsclimate
    calvinsclimate One of the most common signs of a refrigerant leak will be noticeable near the vents. If you feel weak or warm air moving through the vents while running the air conditioning, you may have leaking refrigerant. The leak may be preventing the system from producing cool air. Reply
  • Avatar of Max Jones
    Max Jones Thanks for the info about AC units. My home's AC unit is broken. I'll look for an AC repair service. Reply
  • Avatar of Victoria Addington
    Victoria Addington It was most captivating when you mentioned that the AC unit should be placed in an ideal position. I think we positioned ours incorrectly, that's why it's acting up. I better look for an HVAC contractor the handle the AC repair in our place. Reply
  • Avatar of John
    John Great article! very helpful and detailed! Reply
  • Avatar of JP
    JP This articles talks about how important to seek advice from the experts first before installing an air conditioning, because choosing the wrong size ac might lead to either short cycling due to small size or you could end up with overworking itself! Reply
  • Avatar of Aruni Mukerji
    Aruni Mukerji Very useful article. informative and detailed Reply
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    coolbydesignfl Commercial and industrial refrigeration and HVAC systems that break down unexpectedly can be a serious emergency. Reply
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  • Avatar of slairservices
    slairservices The AC installation is complete only when the homeowner is completely satisfied. A professional technician should explain the entire system to the homeowner right from starting the AC to its actual operation to shutting it off. The other things that the technician should tell you about are adjusting the thermostat, the desired humidity levels, DIY procedures for basic maintenance, everyday AC problems that you may face and their solution, etc. Reply
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    Avalostint Absolutely good article. enlightening and clear Reply
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    Heating Cooling Appliance Technique Inc Very good piece. enlightening and clear Reply
  • Avatar of Caroline Jensen
    Caroline Jensen Thanks for listing down all these mistakes to avoid when it comes to installing air conditioners. Based on my experience, all these mistakes could be easily avoided if you let a professional Central AC Installation Company take care of the installation for you since they have all the required tools and expertise to ensure proper AC installation. Reply
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  • Avatar of Jessie Holloway
    Jessie Holloway thanks so much for the list of things to look into and ensure you know when trying to install a new AC unit. My partner and have noticed that our AC unit has stopped blowing air at all so we've been thinking about getting it replaced. We'll have to look into finding a professional HVAC person to help us replace the old thing. Reply
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    Victoria Addington I appreciate you reminding me that an air conditioner generates a lot of moisture when it operates. As you indicated, water damage can result if there is no means to remove moisture. I'll definitely share this with my daughter to keep in mind because she has been preparing to install a new air conditioner. I'll also look into ac installation services that could be able to assist her. Reply
  • Avatar of Alice Carroll
    Alice Carroll Thanks for the reminder that proper sealing of the ductwork should also be considered when planning to get an AC system installation service. I'd like to find a good contractor for that because I'd like to start working on improving the air quality of my home. Having optimized temperature control will also be a significant part of that. Reply
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