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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.
John's Refrigeration is now hiring qualified Air Conditioner technicians in Gilbert AZ.
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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Category: Heating pg. 5

Category: Heating pg. 5

Archive for the ‘Heating’ Category

Energy Efficiency – Will this DOE change matter?

Wednesday, 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?

Friday, 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?

Friday, 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

Thursday, 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

Friday, 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.

Common Furnace Repairs

Friday, 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.

When Should I Schedule Heating Maintenance?

Friday, October 3rd, 2014

Regular heating maintenance is incredibly important for extending the life of your heating unit. There are some times, however, when maintenance is even more beneficial than normal. Let’s take a look at some of the times when you receive the best benefits from heating maintenance.

Preventative Fall Maintenance

The best time to conduct maintenance on any system is right before it is going to be used heavily or over a prolonged period of time. In the case of heating, this means having it serviced during the fall. Most people run their heating system every single day during the winter months, which definitely qualifies as heavy usage. If you time your maintenance to occur just before winter, you can be confident that your heating system is in top condition when you need it most.

You may be tempted to wait until the start of winter itself to get your maintenance done. The reason we do not recommend that is because winter is when heating systems will start breaking down. All the preventable issues that could have been fixed in the fall will cause breakdowns. This will cause a spike in HVAC repair calls. It will generally be far less convenient to secure a service call during the winter. If your heating system breaks down, you could wait several days for a technician while having no heat in your home.

Strange Circumstances

If your heating unit starts making strange noises on startup, turns on and off too frequently, or you notice cold spots in your home, call a professional right away! Small quirks may seem innocuous, but if ignored they could develop into some big problems. You don’t want to leave an obvious malfunction alone until your yearly scheduled maintenance. Fix it right away so you don’t have to deal with your heating unit breaking down.

If you haven’t scheduled your fall maintenance yet, or you are having problems with your heating system, call Johns Refrigeration. We conduct heating maintenance throughout the entire Mesa, AZ area. Don’t wait for your heating unit to break down. Call us today.

Why our Technicians are NATE Certified…and Why It Matters

Tuesday, May 27th, 2014

When you have a technician come into your home, you want to know they are experts in their field. You want to know they can solve your problem and create comfort in your home.

At John’s Refrigeration, we are pleased to say that our technicians receive ongoing education, including NATE certification. Our NATE certified technicians are the best in the HVAC field because they have taken the time and effort to learn about the equipment on which they are working.

What is NATE certification?

North American Technician Excellence (NATE) certification is a requirement for all of the technicians at John’s Refrigeration. Our team learns about the installation and maintenance of HVAC equipment so they can answer your questions, and install and fix equipment in a cost-effective and knowledgeable manner.

What’s the history of NATE?

Unhappy with customer callbacks and costly equipment returns, HVAC manufacturers came together to teach the best ways to install and service their equipment. Their goal was to make the process more efficient. From industry knowledge of installation to proper maintenance of equipment, a NATE certified technician has the knowledge to work on a variety of equipment, including:

  • Air conditioning
  • Air distribution
  • Heat pumps
  • Gas heating
  • Oil heating
  • Commercial refrigeration

They are trained to install, diagnose, and fix equipment to the highest efficiency standards.

Why it Matters

We want our technicians to be able to offer the highest quality service to our customers. John’s Refrigeration is dedicated to providing comfort to you, your family, and pets by ensuring optimal temperature, clean air, and energy efficiency. NATE certification is just one of the ways we accomplish this goal.

To learn more about our technicians and services, please contact us today.

Related websites:

North American Technician Excellence (NATE) official website

Why is it important to regularly change air filters for home?

Thursday, May 1st, 2014

All of the air that flows from your HVAC unit into the living spaces of your home must pass through an air filter before it gets to the air conditioning or heating unit. If the filter is clogged with contaminants, the air will filter through those pollutants as well. Air filters for home don’t just help improve the air quality inside your home, however; they also protect your heating and cooling system from being damaged. The Environmental Protection Agency cites changing your home’s air filter as the most important maintenance task that you can do to optimize your HVAC system’s energy efficiency.

By changing the air filter in your home, you’re not just allowing the unit to breathe easier; you are also doing the same for your family.


There are a host of health problems that can occur as a result of airborne contaminants inside your home. Change your air filters on a regular basis to keep your home comfortable and to avoid the many respiratory difficulties, allergies, and illnesses that can occur because of the circulation of bad air in your home.

Most air filters trap contaminants including dust mites, tobacco, bacteria, dust, pet dander, pollen particles, and particles that carry viruses, which can help keep your family healthier, too. The amount of contaminants captured by the air filter increases over time and it will eventually become so dirty that it will restrict airflow. The HVAC system is then forced to work harder to move the amount of air necessary to maintain the desired temperature in your home. The amount of additional energy your unit has to draw under these conditions is significant and often results in higher utility bills.

Buying the correct size filter is also important; you want the air to move through the filter, not around it. Please read our article on what type(s) of filters to use. Change the air filter on a regular basis in order to keep your unit working as efficiently as possible. Air filters should be replaced (or at least checked) every month, especially in the winter and summer when your system is used the most.

In order to get the most efficient use of your system, change your air filters regularly in order to enjoy the coolness of your home when temperatures reach 110°. It’s the easiest, yet most important way to keep your HVAC unit running efficiently and keep it running when you need it.


What to Look for with Your Heating Installation Service

Monday, March 31st, 2014

Installing a new heater can be a big undertaking, both in terms of the investment involved and in the changes it will make to your house. A new heater can erase many of the problems an old heater suffers from, as well as giving you a chance to enjoy more reliable heat at improved monthly rates.

But the best way to ensure a clean and reliable new furnace is to hire the right heating service to install it.  Here in Gilbert, heating installation services are quite numerous, so how are you to tell the good services from the bad?

Here’s a few general guidelines that can tell you what to look for with your heating installation service.

  • Accreditation. The best and most reliable sign of a quality heating service is endorsements and affiliations with reputable third parties.  This can include the Better Business Bureau, the local Chamber of Commerce and specialized institutions like NATE (North American Technician Excellence), which gauge technician’s know-how in various technical fields. Good word of mouth helps too, but serious accreditations are a real stamp of approval when seeking the right service.
  • Longevity. A newly established company isn’t necessarily a bad one. Indeed, many can be quite good and every company was newly established at some point. But the more recently a company began, the more of a risk you’re taking in terms of quality. A company with a long history and successful track record means a long line of happy customers and reliability you can count on.
  • Service. When looking for a good heating service, you want to emphasize the “service” part of the equation. Does the company offer warranties or similar guarantees? Does it have 24-hour service to treat emergencies? Does it offer estimates before work starts so that you know what’s involved? These are signs of a professional organization that wants your business, and one you can presumably count on to do the job right.

Here in Gilbert, heating installation can be provided by John’s Refrigeration with an absolute assurance of quality. We’ve been in business since 1970, we offer emergency service and free estimates, and we proudly display accreditation with NATE, the BBB and the Gilbert Chamber of Commerce.

If you know what to look for with your heating installation service, you don’t need to look any further. Give us a call and set up an appointment today!

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