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Call for reliable AC replacement in Mesa AZ.
For AC repair in Mesa AZ, like us on Facebook!
For AC repair in Gilbert AZ, visit us on Google!
To schedule your Air Conditioner installation in Chandler AZ, just email us!
see what your neighbors say about the AC repair or installation we performed near Mesa AZ on Pinterest!
For AC repair in Gilbert AZ, follow us on Twitter!
For Ductless AC repleacement in Mesa AZ, watch our videos on YouTube.
Call Us Today!
Call John's Refrigeration today for AC repair service in Chandler AZ
Call for reliable AC replacement in Mesa AZ.
Call John's Refrigeration today for Air Conditioner repair service in Gilbert AZ
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Blog Index 14

Blog Index 14

John’s Refrigeration Blog

What is a radiant barrier and is it worth the cost to install in your home?

November 12th, 2014

The Department of Energy describes a radiant barrier as a highly reflective material that reflects radiant heat rather than absorbing it. It is installed in homes, usually attics, to reduce summer heat gain and reduce cooling costs.


Sounds great, especially for the Arizona summer, at least in theory. Before you’re sold on the idea, let’s look at whether or not a radiant barrier is worth the cost.

  1. The easiest homes to install radiant barriers are new builds. In an existing home, it is best to install in an open attic.
  2. As with A/C units, the efficiency is dependent on the installation. While you can install yourself, we recommend hiring a RIMA International certified installer who understands which type of barrier is best for your home and the proper place for installation.
  3. Choose the type of barrier that is most appropriate for your climate and home. Radiant barriers are available in reflective foil, reflective laminated roof sheathing, and metal roof shingles. In Arizona, it is recommended that you use reflective foil.
  4. Location of the barrier is as important as the type of barrier you select. Simply laying a foil barrier on the attic floor will not be effective as it will gather dust, dirt, and other contaminants quickly.
  5. Other factors to consider are the cost of hiring a contractor for installation, the size of your house, and how accessible the attic is.

As with any home improvement project, it is important to ask a lot of questions of professionals as well as from your neighbors and friends. You also want to research the options yourself so you’re an informed consumer.

For questions about radiant barriers and other ways to make your home more efficient, contact the team at John’s Refrigeration and download our e-book today!

Furnace or Heat Pump – Which Is Better?

November 7th, 2014

Homeowners have a number of choices when it comes to selecting a new heating system for their home. Not only are there choices in the type of system you can have, there are choices when it comes to fuel types and how air is delivered to your living spaces. There is also the question of choosing a more traditional system like a furnace, or selecting something with newer technology, like a heat pump. We’re going to take a look at both of these heating systems today, but one of the best ways to ensure that you choose a heating system, that fits both you and your home is to work with a professional from start to finish. John’s Refrigeration has the trained and certified professionals who can help you decide which system will work best in your home, so call us today.


Furnaces can use oil, gas, propane or electricity as fuel. Combustion furnaces heat by warming the heat exchanger inside the unit and blowing the warmed air into your home. Electric furnaces use tightly-wound coils that are heated by electricity to warm air, with ductwork distributing the heated air throughout your home. Some of the benefits of furnaces are:

  • Fast heat – furnaces can heat living areas quickly.
  • Widely available – furnaces are one of the most commonly-used heating systems around; as such, parts are widely available as are replacement units.
  • Can be used with air conditioning – because furnaces need ductwork to deliver heat, it is easy to add air conditioning to your home when you have a furnace.

Heat Pumps

Heat pumps do not use fossil fuels to operate, nor do they generate heat via combustion. Heat pumps work by transferring heat from one place to another. They do this with the help of refrigerant, which facilitates the heat transfer process. During the winter, heat pumps absorb the heat in the surrounding air, concentrate it and distribute it to your home. In summer, the refrigerant absorbs the heat from your indoors and transfer it outside. Some of the benefits heat pumps offer are:

  • Very energy efficient – heat pumps use approximately 25% of the electricity a whole-home air conditioner uses, making them very energy efficient.
  • Heats and cools – heat pumps are 2-in-1 devices that can both heat and cool your home.
  • Doesn’t need ductwork – heat pumps can work with ductless systems, so you don’t have to have ductwork to install a heat pump system.

When it comes to deciding what type of heating system to install in your home, the best decision you can make is to work with a professional. Call Johns Refrigeration today and schedule your heating service in Mesa, AZ with one of our experts.

Energy Efficiency – Will this DOE change matter?

November 5th, 2014

In an effort to continue making American homes more energy efficient, the U.S. Department of Energy (DOE) is increasing the minimum federal standard for air conditioners in the southern United States, including Arizona, from SEER 13 to SEER 14 effective 1/1/2015.


At John’s Refrigeration, we are dedicated to keeping our customers safe and comfortable and will, of course, comply with these changes. We also believe that the energy efficiency of your home depends on much more than the SEER rating of your AC unit.

Let’s start by defining Seasonal Energy Efficiency Ration (SEER)

Seasonal Energy Efficiency Ratio (SEER) is the total cooling output (in British Thermal Units or BTUs) provided by the unit during its normal usage period divided by its total energy input (in watt hours) during the same period. The higher the SEER rating, the more efficient the unit. In theory, the SEER 14 is a more efficient unit than the SEER 13.

The SEER Challenge

The rating is derived in a laboratory setting with a steady temperature of 85 degrees, well below temperatures we see here in Arizona. In addition to the temperature, the testing room has perfectly installed ductwork. In other words, it’s a closely controlled environment that represents almost no home in America or anywhere else.

The Solution

While we believe the SEER 14 units will provide greater energy efficiency, our team of certified and trained technicians will continue to inspect and repair duct systems, as they are the key to energy efficiency. As much as 20% of the air that moves through a duct system can be lost to leaks and improper installation. We strive for efficiency, not only in the units we install, but in the entire system of your home.

Just Call John’s today to schedule a FREE ESTIMATE and learn how we can help you create an efficient and clean home environment.

Should I Repair or Replace My Heating System?

October 31st, 2014

If your heating system is on the brink of failure, you’re faced with an important decision: should you repair or replace your unit? Of course, if your system still has a couple of decent years left, you likely want to make smaller repairs to avoid the high cost of replacement. On the other hand, if you pay to repair your heating system now, only to have another part break shortly afterwards, you may regret your decision not to schedule replacement in the first place.

So how do you decide which choice is most cost effective? Is your older system worth the cost of repairs, or would replacement turn out to be a better option? In this guide, we’ll go over a few points to consider when deciding what to do with your older heating system. The friendly professionals at Johns Refrigeration can inspect your system to help you make the right decision about heating.

  • It’s cheaper to replace an entire system than repair it piece-by-piece. When one component of your older heating system has broken down, chances are that the other components are not too far behind. When you replace each part individually, you end up paying more in the long run. On the other hand, if your system is not too far along in its lifespan, a simple repair usually does the trick, provided the heating system was properly sized during installation.
  • After a certain age, heating systems are at a high risk of breakdowns. Most furnaces last up to 15 years, while heat pumps can last even longer. However, this is only true with proper maintenance. If your heating system has not been examined by a technician in many years, it may be close to failure, even without any noticeable repair needs.
  • Professional technicians are qualified to handle this type of decision. The best person to help you decide on the future of your heating system is a trained technician. They have the tools and the experience to tell when your system is at a high risk and whether an inexpensive repair will do instead. Furthermore, they may be able to recommend a more effective and efficient system for replacement.

At Johns Refrigeration, we’ll help you make the best decision about your new heating system with a thorough inspection and assessment from certified technicians. Call us today to learn more about heating repair service in Mesa, AZ.

Why Is My Furnace Short-Cycling?

October 24th, 2014

Most of us are familiar with the little tick sound that the furnace will make when it starts a new cycle, but if you are constantly hearing that sound, and noticing your system keeps turning on and off, you most likely have a short-cycling problem. Short-cycling can cause damage to your heating system, so it’s important to have the issue addressed right away. There can be a few reasons why your furnace is short-cycling, which is why it’s best to call for professional help. John’s Refrigeration has been helping customers in Mesa, AZ with their heating needs since 1970, so if you are experiencing issues with your furnace, call us today.

Reasons for Short-Cycling

Here are some of the reasons your furnace may be short-cycling:

Blocked Air Flow

Proper airflow is critical to the operation of your furnace. Airflow can be restricted by obstructed ductwork, a dirty air filter and/or blocked registers. To help prevent low airflow, it’s important to change your air filter regularly (approximately every 3 months), have your ductwork professionally cleaned every 3-5 years and make sure that furniture, drapes, etc., are not blocking the heat registers in your home.

Thermostat Problems

Your thermostat controls when your system cycles; should it malfunction, one of the problems that can develop is short-cycling. Common issues that can cause the thermostat to perform poorly are dirt and dust on the inside instrumentation, placement in drafty areas or poor mounting that makes the thermostat hang unevenly.


Your furnace has a number of safety devices that will turn it off when it gets too hot. One of the reasons short cycling can occur is because the heat exchanger overheats. When this happens, the burner automatically shuts off to prevent damage to the heat exchanger.  In rare circumstances, a crack in the heat exchanger can also cause short cycling. Significant dirt and dust can also cause overheating, as a thick enough layer will act as insulation and keep heat trapped, which makes the heat exchanger too hot. No matter what the cause, overheating is a serious situation, and should be taken care of immediately.

Short-cycling can cause premature aging, wear and tear and damage to your furnace. If your heating system is short-cycling, call John’s Refrigeration today and schedule your heating service in Mesa, AZ with one of our HVAC professionals.

3 Tips to Size and Seal Your Duct System Properly

October 23rd, 2014

While the actual HVAC unit is important to keeping your home comfortable during the hottest and coldest months of the year, the duct system plays a key role in keeping you comfortable and healthy. If it isn’t sized properly, it can cause dust and contaminants to enter your home, hot air to be brought into your home through the A/C system, and increased energy bills.

Do you need to size and seal your duct system properly?

Your home may have ducts that are not properly installed if you experience:

  • Extremely high energy bills during the hottest or coldest months.
  • Rooms that are stuffy or difficult to keep cool or warm.
  • Excessive dust and unpleasant odors.

Test the System. The team at John’s Refrigeration can evaluate and renovate the duct system of your home, solving these problems:

  1. Size Matters. Your home breathes just as we breathe. When the ducts are too small for the HVAC system that is installed, it causes the air to be constricted and the system to work harder to heat and cool your home. We will examine every part of the duct system for leaks, blockages, and poor design.

TIP: Use the proper size air filter for your system and change the filter as directed; typically once a month. Improperly sized or dirty filters constrict the flow of air as much as an improperly sized duct system.

  1. Air Quality Matters. The key to healthy indoor air quality is having a certain amount of fresh air in the home. We can test indoor air quality and fix issues you may have, including helping fresh air flow properly through the system and into individual rooms.
  2. Hole-y Matters. In the typical home, about 20% of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts. Leaks cause the system to work inefficiently, costing you in utility bills. We can repair the leaks and fix breaks and get your money back in your pocket.

The team at John’s Refrigeration can size and seal your duct system properly, keeping air flowing, contaminants and dust outside the home, and you comfortable. Schedule an appointment today!

3 Common Heat Pump Repairs

October 17th, 2014

In terms of function, heat pumps are very similar to other heating systems. Because of their more complicated construction, however, there are a few common repairs that are unique to heat pumps. Let’s take a look at some of the common problems associated with heat pumps, and their solutions.

Heat Pump Won’t Switch Modes

One of the greatest things about heat pumps is their ability to switch between heating and cooling modes. A problem can occur, however, where a heat pump can become stuck in one mode or the other. This is caused by a broken reversing valve. Oftentimes, the solenoid that detects what mode to switch the reversing valve to can lose its magnetic charge. This makes the valve unable to operate, which causes the heat pump to become stuck.

Heat Pump Ices Over

It is not uncommon to find ice on your heat pump during especially cold days. As the outdoor coil absorbs thermal energy from the air, ice forms on the casing as a side effect. Normally, the heat pump uses a defrost cycle to melt the ice off the pump on a regular basis. If you notice that your heat pump is mostly or completely covered with ice, it means that the defrost cycle likely isn’t working. This will ultimately prevent the heat pump from gathering thermal energy from the air, which more or less means it will stop giving off heat.

Heat Pump Doesn’t Heat Enough

If your heat pump is on but not heating enough, there are a number of possible causes. The first is simply that the environment is too cold. Heat pump efficiency is directly linked to the amount of thermal energy in the air. The colder the environment, the more difficult it will be for the heat pump to reach the target heating temperature. The other possibility is that there is a leak in the refrigerant line. This will slowly drain the heat pump’s ability to deliver thermal energy and circulate heat throughout the house.

If your heat pump is acting up, call Johns Refrigeration. We conduct heating repairs throughout the Mesa, AZ area.

Join us for the San Tan Learning Center Golf Tournament

October 16th, 2014

John’s Refrigeration is pleased to announce that we are one of the sponsors of the San Tan Learning Center Golf Tournament. The event will take place November 1, 2014 at the Ocotillo Golf Resort at 3751 S. Clubhouse Dr. in Chandler, AZ.


Proceeds from the event will go to support the San Tan Learning Center Growing Brilliance Campaign, an opportunity for the Gilbert area community to become involved and invest in the success of these local public charter schools. The schools are 501(c)3 organizations and all or part of your donation at the event is tax-deductible.

The cost is $100 per person or $350 per foursome. Come have fun for a good cause!


10:30 am Open Registration

11:30 am Putting Contest

12:15 pm Shotgun Start

5:30 pm Awards Dinner

Common Furnace Repairs

October 10th, 2014

Furnaces are the most popular way to heat homes, and have been for more than a century. During those many decades, of course, furnace technology has advanced, and current furnaces are designed for lengthy lifespans, energy-efficient performance, safety, and reduced repair needs.

But no complex machine can ever operate 100% free from malfunctions, and as your furnace ages, it may need to have targeted repairs to keep it running. At Johns Refrigeration, it’s our job to protect your heating system, so that you have a furnace that is always prepared for the occasional cold days. When you notice anything about your furnace that is unusual, or if it starts to lag in performance, call us right away to arrange for the repairs that will get it back on track. Schedule your appointment with our Mesa, AZ heating technicians today.

Here are a few of the more common repairs that a gas furnace may need:

Replacing a Cracked Heat Exchanger

This is a crucial repair, because a cracked heat exchanger can turn hazardous. The heat exchanger is the metal compartment where the hot combustion gas collects and then transfers its heat from the metal walls to the air around it. Cracks in the exchanger, which can occur because of corrosion, may allow carbon monoxide to escape from the furnace. If you hear odd clicking noises from your furnace, it might be due to a cracked heat exchanger, so have a repair technician look into the issue right away.

Cleaning the Burner

The burner is the place where the gas jets turn on to create combustion gas. The pilot light/electronic igniter turns on the burner whenever the thermostat signals that the house needs heat. However, if dirt and grime cover the burner, it won’t be able to draw sufficient oxygen to allow the burners to activate. To clean it, HVAC technicians must first remove the burner itself. They will also look for rust flakes inside the burner that might result in low gas flow.

Replacing a Failed Electronic Igniter

Modern gas furnaces often use an electronic ignition system rather than a standing pilot light because it makes them more energy efficient. However, just as pilot lights can go out, an electronic igniter can fail, and the burner will not ignite when the thermostat signals for the furnace to come on. A repair technician will replace the failed igniter with a new one.

It is very important that you call for repairs for your furnace as soon as you detect something is wrong: gas furnaces are much safer than they once were, but they must have prompt repairs to remain that way. Also make sure that you sign up for regular maintenance in the fall to have your furnace inspected and tuned-up; this will catch any potential repair issues before they become actual issues.

Please contact Johns Refrigeration when you need repairs or maintenance for your furnace. We have helped homeowners stay comfortable since 1970.

“Breathe Easy: How to Make Your Home Healthier” e-book NOW AVAILABLE with Special Offer

October 9th, 2014

When you want the air in your home to be clean, it’s time to Just Call John’s. Working with our team of Certified Comfort Specialists, the health of your home will be evaluated using the latest in indoor air quality diagnostic technology. Our goal is to have all of our customers breathing easier in their homes.

We want you to not only be comfortable in your home, but to understand how your home breathes and what that means to your health, both physical and financial.

We are pleased to offer our e-book called Breathe Easy: How to Make Your Home Healthier.

Did you know that your home breathes? Just like we breathe, our homes have a life of their own, taking air in and out. When your home is improperly sealed, contaminants, dust, and pollen can enter or stay in the home. This can not only create breathing or allergy problems for you and your family and more time spent cleaning, it can cost you in higher utility bills.

When you Just Call John’s, our team will perform a complete inspection of your home, making recommendations to make it healthier and more energy efficient. When your home is breathing properly, you will experience less dust, more moisture (humidity), and lower electricity bills. That makes anyone breathe easier!

Click HERE to download your copy of Breathe Easy: How to Make Your Home Healthier AND receive a discounted 21-point home inspection: a value of $89.95 for only $69.95 to our e-book readers.

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We service most AC brands and models near Mesa AZ.
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Mesa, AZ 85210
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Phone: 480-649-1000
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