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What Every Homeowner Should KNOW Before Purchasing a New AC Unit

Let’s face it, for the vast majority of homeowners, we know that installing a new AC unit is not a do it yourself, weekend warrior job.  So, before you call an expert, it’s important to educate yourself as a consumer in order to make the right choices for your family’s comfort.

Understanding the Right Size

In many homes, the existing system is oversized due to the fact that the owners have made improvements to make the home more energy efficient through time.  For example, adding double pane windows and insulation to a home means that the unit that was previously properly sized is now oversized.  Units that are too large will cycle on and off frequently.  As a result, there will be swings in room temperature and the unit will not remove sufficient humidity from the home.  This process wastes energy and also increases the chance the unit will fail before its time.

On the other hand, units that are too small can also increase the likelihood of a breakdown as well.  The too small unit must work harder and stay on longer than a properly sized one.  As the days grow warmer, the unit may not have enough cooling capacity to cool the home sufficiently.

How to Determine the Right Size

In order to select the correct size of air conditioner, contractors should refer to Manual J.  The software considers several factors in choosing the right sized unit.  These include the orientation and size of the home, the amount of insulation, the home’s windows and the number of people living in the home.  In addition, the contractor should refer to Manual D, a companion to Manual J that helps if ductwork changes will berequired during the installation.

By referring to these calculations as well as other factors, the contractor can determine the proper cooling load for the home.  Determining the cooling load is the only correct method to choose the correct size for the home’s new AC system.

Consumer Alert:  Ask your Air Conditioning Professional “how did you determine the size unit that my home needs?”  If the contractor says they use the BTU figure or the square footage of the home, they are not including all of the factors needed to make a sound recommendation.  It’s time to get a second opinion before making a commitment to buy.

Installing the New AC System

While do-it-yourself homeowners may consider making the installation of the new system for themselves, this is a job that should be left to the qualified contractor.  Even if the homeowner does part of the job for himself, a contractor is still needed for:

Charging the system with refrigerant.  The law requires EPA-certified technicians for handling this chemical.  If an old system is being removed, a contractor must remove any R-22 refrigerant from the old system and process it per EPA regulations.

– Connection of the unit to the circuit panel and any other high voltage electrical wiring.  The contractor must also verify the current electrical system meets the demands of the new home AC system.

– Inspection of the installation.

– When it is time to have the new home AC system installed, the compressor should be installed in a shady place, preferably on the east or north side of the home.

-Manufacturer warranties are typically contingent on the equipment installed by a certified & licensed contractor.

The purchase of a new Comfort System is a large investment and it is worth choosing a qualified professional to help guide you in making the choices for your home that are designed for how you live and using the highest industry standards.

Hobaica Services has been serving Arizona since 1952 and has a stellar reputation for performing above industry standards, providing a worry free experience and enjoying hundreds of referrals every month from customers who have trusted our team for over 60 years.

Contact Hobaica Services today for your FREE comfort evaluation @ www.hobaica.com or 602-995-0387

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Check Out Our Reviews . . . From Neighbors Near You

Marc Jouandet
Marc Jouandet
01:27 07 May 21
Scott came by today to perform routine maintenance on our air conditioners. He discovered one of the capacitors to be failing & was able to replace it quickly & efficiently. Now I can get through the summer without worries. Thanks Scott!
Lynne Paxton
Lynne Paxton
00:00 07 May 21
Ryan Waters did a maintenance check on my AC and repaired a valve on my Mastercool evap. He is always pleasant to work with and did a good job. Thanks Ryan.
Steve Sachs
Steve Sachs
18:33 06 May 21
Travis was amazing! Very knowledgeable and thorough. He completed a service of my A/C unit and a warranty replacement of a failing capacitor. I highly recommend Hobaica for any electrical, HVAC, or plumbing work you need done. I have used them for years and they continue to impress.
Tatia Key
Tatia Key
00:56 06 May 21
Hobaica has been a real pleasure to work with, and I would highly recommend them to anyone looking to replace their A/C. Andy made the selecting, purchasing and scheduling process extremely easy, explaining all our options and answering all our questions very clearly. Jorge performed the installation, and he was courteous, competent, efficient, professional, friendly, and helpful, a delight to have him working on/in my home.I am happy that Hobaica reached out to us for our 2-year inspection. A big thanks to Scott for making sure our unit is operating properly and efficiently.
Ellen Carter
Ellen Carter
23:58 05 May 21
5/5/21Ryan came today to service our air conditioning system and to flush our water heater. He is always courteous and professional. Our air-conditioner and water heater were in good condition.Thank you very much for GREAT SERVICE!
john ngo
john ngo
23:55 05 May 21
Danny Unglaub is a true professional. He came to my house on time and checked all parts of my air conditioning unit. He is very thorough. We will ask for him on our next appointment.
Joan Salvatierra
Joan Salvatierra
21:24 05 May 21
Mike serviced our a/c today. He was punctual, polite, pleasant and efficient. He was knowledgeable in explaining issues and answering my questions. He went out of his way to be helpful,
Hope Dymek
Hope Dymek
18:49 05 May 21
Scott was punctual, polite and professional. A thorough inspection of our HVAC systems was completed as well as installation of new capacitors. Hobaica was quick to schedule our maintenance request, and Scott was knowledgeable and efficient. Great value and great service!
anne feuerborn
anne feuerborn
23:56 04 May 21
Ryan was awesome. He was a trustworthy and diligent worker. My new water heater looks terrific!

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