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Call for reliable AC replacement in Mesa AZ.
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Category: Heating pg. 4

Category: Heating pg. 4

Archive for the ‘Heating’ Category

Why Consider a Heat Pump?

Friday, January 16th, 2015

You may or may not have heard of a heat pump, a relatively new kind of heating system that’s gaining popularity across the country. Even if you have heard of it, you may not know how it works or why it’s worth choosing over a more traditional system. For those of you who are curious about the benefits of a heat pump, you’ve come to the right place. Read on to find out how a heat pump actually works, and what kinds of benefits it can provide.

What is a Heat Pump?

A heat pump is a non-combustion based system. That is, it does not burn fuel in order to create heat. Instead, a heat pump moves preexisting heat from a space that doesn’t need it to a space that does. It does this by utilizing two different parts of the system, an indoor unit and an outdoor unit. The outdoor unit is installed outside, while the indoor unit is installed inside, as you may have guessed. The two units are connected to each other by power and refrigerant lines.

When the heat is turned on, the outdoor unit evaporates refrigerant using a coil inside its casing. The gaseous refrigerant acts as a heat sink, pulling thermal energy from the surrounding air and into the coil. The thermal energy is then carried down the refrigerant line and into the indoor unit. There, the refrigerant gas is condensed back into a liquid state. This releases the thermal energy to warm the air before circulation.


There are multiple benefits to installing a heat pump in your home. The first is that a heat pump system is much more energy efficient than combustion systems. It only has to use electricity to operate, and garners the entirety of its heat from the surrounding environment.

The second benefit of a heat pump is that it can actually act as both an air conditioner and heater. It does this by simply reversing the flow of refrigerant through the system, taking heat from the house and releasing it outside. This saves you the space and expense of installing an entirely new system.

If you’d like to know more about heat pumps, call Johns Refrigeration. We provide heating installation throughout the Phoenix area.

What Are My Heating Options in Tempe?

Thursday, January 15th, 2015

There is a huge amount of heating options available to homeowners today, so many that it can easily be overwhelming.

  • Do you want a combustion heater or a heat pump?
  • If combustion, what fuel do you want it to burn?
  • If heat pump, do you want a central unit or a ductless system?
  • If you aren’t sure about any of those questions, don’t worry.

We’ve got a short summary below of some of your heating options in Tempe.


Furnaces are the most popular kind of heating system in the country. They’re relatively cheap, versatile, and put out a lot of heat relative to the amount of fuel burned. Most furnaces operate on natural gas, which is piped in by the city. In areas where natural gas is not an option, however, electric and even wood burning furnaces are still an option. Furnaces are a great option for those who want a sturdy heating system that can last a long time.

Heat Pumps

A heat pump does not burn fuel to create heat, like furnaces do. Instead, it evaporates and condenses refrigerant to move heat from one area to another. This makes it extremely energy efficient, because it’s moving preexisting heat from outside into the home instead of creating it. It’s also safer, as it doesn’t have any toxic byproducts of its operation like furnaces do from burning natural gas. Heat pumps are a good choice for people who want to save money and live in more temperate climates.

Ductless Mini-Split Systems

A ductless mini-split is just like a heat pump, but built to only heat one room instead of the whole house. Why would this ever be desirable? Well, for one thing it avoids losing heat to leaks in the ductwork, something that a lot of forced air systems suffer from. For another, it offers the added ability to set a different temperature in each room with a ductless system. Ductless systems fit the needs of those who want a finer level of control over the climate in their home.

If you’re in the market for a new heating system, call Johns Refrigeration. We provide heating installation services throughout Tempe.

3 Tips to Fix Pressure Balance Problems in Heating and Cooling

Tuesday, January 13th, 2015

Did you know…the air in your home can be a negative, positive, or neutral pressure? It’s true and it’s one of the least understood – and most important – issues in heating and cooling. Ideally you want a neutral system, but finding the balance of negative and positive pressure can be challenging and can create different zones of heat and cold throughout your home.


Whether it’s positive or negative, too much pressure is not good for your home. Neutral air is the most energy efficient because it means there is no air escaping through cracks or unsealed ductwork and outside air isn’t entering the home. The best pressure in your home is neutral to slightly positive as it is also the most comfortable while preventing dust, pollen, and other contaminants from entering the home.

What’s negative pressure?

When too much air is drawn into your home, it creates a condition known as negative pressure. Dust, pollen, and environmental contaminants enter your home and can cause allergies, asthma, and health risks associated with dust, mold, and carbon monoxide. Some of these issues can be resolved by properly sizing and sealing ductwork, and installing weather stripping on doors and windows.

What’s positive pressure?

When conditioned air within your home is escaping through windows, doors, and cracks into the attic and elsewhere, positive pressure is created in your home. The system just heated or cooled the air and that conditioned air is flowing right out the door – literally. It costs you in increased utility bills.

An energy audit will determine if your home has a positive or negative air pressure, as well as the cause(s), and solution(s) to get your home to neutral pressure.

Just Call John’s to schedule an energy audit and learn about the pressure in your home today.


Can I Do My Own Heating Repairs?

Monday, January 5th, 2015

If you have discovered ways to perform multiple repairs around your household using your own tools and know-how, it’s tempting to think that you can apply this same dedication and independence to the central heating system that keeps the home warm during winter nights. After all, what’s wrong with trying to fix a small problem with a furnace or a heat pump on your own, rather than calling a professional contractor to handle it?

Actually, quite a lot is wrong with this! Although there are some basic maintenance tasks you can accomplish on your own, such as regularly changing a heater’s air filter, when it comes to repairing a heating system, you must leave the work to trained technicians. In fact, in many localities, it is illegal for anyone except licensed professionals to work on natural gas-powered heaters.

Thankfully, trained assistance for repair is readily available from Johns Refrigeration. We offer speedy, dependable heating repair services in Mesa, AZ and the surrounding areas, and we’ve helped homeowners stay comfortable since 1970. Call us whenever you experience difficulty with your residential heating system.

Why Heating Repairs Are Not DIY Jobs

Safety is the number one concern when it comes to fixing heating systems. The majority of home heaters are gas-powered furnaces, and it is vital that professionals handle any work associated with them. Not only are the repairs themselves potentially hazardous, but poorly done repair work can lead to a furnace that leaks carbon monoxide. Only professional work will give you reassurance after repairs are completed that the heater is working at its highest safety levels.

Even if you don’t have a gas furnace in your home but instead use an electric furnace or a heat pump, you still must leave repairs to professionals to make certain the work is done correctly. Modern furnaces and heat pumps are far too complex for amateurs to fix; in fact, simply diagnosing what is causing a malfunction is extremely difficult without years of training. An incorrectly applied repair is often worse than no repair at all.

Finally, professional heating repairs will go faster. Instead of struggling for hours or even days to perform repairs on your own that most likely won’t succeed anyway, you can call experienced technicians to take care of the work in only a fraction of the time.

The lure of saving money by going “do-it-yourself” may feel strong, but keep in mind that this is actually an illusion: a badly repaired heater will cost money because of future repairs and inefficient performance—and this is before you consider the potential safety risks! Don’t make this mistake: call on Johns Refrigeration for heating repair service in Mesa, AZ that will have your troubles solved for the long run.

How Does Energy Efficiency Factor into Furnace Installation?

Friday, December 19th, 2014

One of the main reasons to install a new furnace is to achieve better energy efficiency. But how do you know that your new system will be energy efficient? You’ll want to take a look at the AFUE rating.

What Is AFUE?

AFUE stands for annual fuel utilization efficiency, and it is the measurement of a furnace’s efficiency in converting fuel to energy. For instance, if you see an AFUE rating of 90%, this means that for every 100 units of fuel burned, your furnace will generate 90 BTUs (British thermal units). Put another way, an AFUE of 90% means that 90% of your total fuel usage goes toward heating your home; the rest is lost to exhaust that goes out your flue. Reviewing the AFUE rating will tell you not only how energy efficient the unit is, but how much money you can expect to save, depending on what the AFUE is. It is important to note that the higher the AFUE rating, the more expensive the unit will be.


A second way to assess whether or not a particular furnace is energy efficient is to see if it carries an ENERGY STAR sticker. The ENERGY STAR sticker will only appear on products that are at least 15% more efficient than the minimum standards. As such, any product with the ENERGY STAR sticker will have good energy efficiency.

Why Does This Matter?

Less fuel usage means lower monthly energy bills; the best way to achieve energy usage is to install an energy efficient furnace.

What Energy Efficiency Doesn’t Mean

There can sometimes be confusion about what having a more energy efficient furnace can mean, so we’ll explain here. Let’s say you are looking at a furnace with an AFUE of 95% versus a furnace with an AFUE of 90%. The furnace with the higher AFUE won’t heat your home better or faster than the furnace with the lower AFUE rating, it will heat it the same; the difference is that it will heat your home using less fuel, which is how a furnace with a higher energy efficiency rating can save you money.

Energy efficiency ratings can be a little confusing, so if you are having a hard time choosing a furnace for your home, call Johns Refrigeration today and schedule your furnace service in Mesa, AZ with one of our installation experts.

What Does NATE Stand for and Why Is It Important to My Heating Repair?

Friday, December 12th, 2014

One of the most important things you want to do when shopping for a new HVAC company is look at their certifications. Certification by professional organizations is one of the best ways to tell if your HVAC company actually has the expertise to take proper care of your HVAC system. One of the most well-known HVAC certification organizations is NATE. Let’s take a look at what NATE actually is, and why you should care.


NATE stands for North American Technician Excellence, and is a non-profit certification organization. It was founded in 1997 with the specific purpose of providing verification of expertise to professional HVAC companies across the country. NATE does this through the administration of difficult tests to gauge the knowledge of HVAC technicians. There are multiple tests, covering a wide range of HVAC topics. These tests are not purely academic, and are instead designed to gauge the actual ability of the technician to address various HVAC problems in the real world

Why is it Important?

NATE is not the only way to tell if your HVAC company is trustworthy. However, it is a nationally recognized metric and is widely used because of its reliability. If you hire a company comprised of NATE-certified technicians, you can be assured of their expertise. If your HVAC company doesn’t employ NATE-certified technicians, you might want to ask why. From the company’s standpoint, there really isn’t a good reason to avoid certifying their technicians. Unless, of course, they aren’t as qualified as they should be.

When you have a need for any sort of heating or air conditioning repair, you want someone working on it who knows what he or she is doing. Having inexpert technicians trying to fix your heating or air conditioning systems can make the problem much worse and require multiple subsequent visits. That’s the last thing you want.

If you’d like to know more about how NATE works, and why we certify all our technicians, call John’s Refrigeration. We provide heating repair throughout the Mesa area.

Why Consider a Ductless Heating System?

Friday, December 5th, 2014

Ductless heating systems may seem like an odd choice for heating your entire home. They take up wall space, can only heat one room at a time, and are less efficient than traditional heating systems in extremely cold climates. However, ductless heating systems have quite a few unique advantages over other systems when used to heat an entire home. Read on for some of the reasons why you should consider a ductless heating system for your home.

What is a Ductless System?

Ductless heating systems utilize heat pump technology move heat from one area to another. This is in contrast to traditional combustion systems, which burn fuel to generate heat. The ductless unit is split into two parts, an interior and exterior. The interior unit is installed in a room of the house, usually on the wall or ceiling, while the exterior unit is located on an outside wall. When the unit is turned on, the exterior unit uses an evaporator coil to siphon thermal energy from the surrounding air. That energy is then sent, via the refrigerant line, to the interior unit. The interior unit then uses that energy to heat and circulate the air in the room.

Why Should I Consider One?

As the name implies, ductless systems eschew ductwork completely. This limits each unit to heating just one room, which is why it has to be installed in that room. It may seem as though this is a disadvantage to using a ductless system. However, there are a couple of things to consider. First, each ductless system is installed with its own thermostat. This allows different rooms in the house to be set at different temperatures, conserving energy and letting each occupant choose a temperature that is comfortable for him or her.

The second thing to consider is energy efficiency. Centralized forced air systems lose as much as 30% of their heat on average to leaks in the ductwork. Ductless systems completely avoid this issue, delivering all of their heat to the target destination and saving money in the process.

If you’d like to know more about ductless systems, call Johns Refrigeration. We offer heating repair services throughout the Mesa area.

3 Signs That You Need to Schedule Repairs for Your Heating System

Friday, November 28th, 2014

When is the last time you called a technician to look at your heating system? If it’s been a year or more, your unit is unfortunately at risk for developing problems that could result in a total system failure. Many homeowners don’t notice the signs of heating repair, or they are not aware that the behavior their heater exhibits is unusual or hazardous. We’ve put together a few of the most common signs that your heating system is in trouble, so you know what to look for in the future.

  • Short Cycling: Short cycling may be indicative of a couple of issues, but in any case it’s bad news for your entire unit. If your system turns on frequently only to shut off immediately afterwards, it could be due to an improperly sized system (which may need premature replacement) or a broken motor or faulty electrical component. In any case, it causes your system to become run down and requires immediate attention.
  • Low Airflow: If you’re not feeling enough airflow in your home, it could be because of a problem with the components of your heater or a dirty filter. Even after you change the filter, you should call a trained technician as well who can make sure it’s not actually a larger problem or an issue in the ductwork. Leaky ducts are a leading cause of low airflow and can lead to efficiency issues and a worn down HVAC system.
  • Strange Noises: If you hear strange noises from your home heater, you should always be suspicious. Any heating system makes a little bit of noise, but a loud banging or clanking noise, a hissing, or any sound that doesn’t seem quite right is nothing to brush off.

We recommend scheduling annual maintenance as well, so that you can keep such problems from reoccurring in the future. Maintenance involves a thorough inspection, cleaning, and a few adjustments of your heater before the heating season begins or toward the beginning of the season. Call Johns Refrigeration to learn more about maintenance or for quick repairs when you notice the signs that you’re in need of heating repair. Schedule repairs for your heater in Mesa with us today!

How Does a Heat Pump Provide Heat?

Friday, November 14th, 2014

Your current heating system is finally on the fritz. It may have served you well over the years, but if it’s frequently breaking down, does not perform as it once did, and/or costs a lot of money to run, a new system may actually be of benefit to you. New heating systems are built to be far more efficient than they were a decade or two ago, as the U.S. government repeatedly sets new standards for HVAC efficiency. And if you think you may need a new air conditioning system as well, then you may be in luck. One of the most efficient heating systems available on the market today is also extremely effective for cooling.

The term “heat pump” is deceptive as it may sound like this is primarily a heating system. However, this is untrue; “heat pump” simply refers to a type of system that moves heat from one area to another. An air-source heat pump, the most common type of heat pump used in homes today, is actually more closely linked to an air conditioner, as it contains nearly all of the components therein. So how does a heat pump also help with heating?

First, let’s take a look at how a heat pump works for cooling. It contains the same components as an air conditioning system. Most notably, there is an outdoor and an indoor fan, the outside compressor, a condenser coil, and an evaporator coil. Refrigerant runs through the inside and outside portions of the heat pump, starting at the compressor, where it’s pressurized and heated so that it can release heat during condensation at the outside coil. Refrigerant then moves inside, where it evaporates and absorbs heat from the air, only to release this heat outside and continue the cycle.

The one component that differentiates a heat pump from a standard air conditioner is the reversing valve. This allows refrigerant to flow in the opposite direction. Now, refrigerant absorbs heat as it evaporates outside and heat dissipates into your house at the inside coil as refrigerant condenses. So what makes this unit so efficient for heating? Simply put, it takes a lot more energy to create heat, as most heating systems do, than to move it from place to place. Therefore, a heat pump can save you a whole lot of money in the heating season.

Call Johns Refrigeration to learn about more of your options for heating in Mesa, AZ.

Furnace or Heat Pump – Which Is Better?

Friday, 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.

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