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Why Are My Energy Bills So High?

11/30/2016

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​Ever wonder what's causing your APS or SRP energy bills to be so high? If your utility bills seem abnormally high it may be caused by something other than the weather. If you have gotten a letter from APS or SRP saying that you are using more energy than your neighbors something could be going on in your attic that's driving your energy bills up. If you have talked to your neighbors who have the same floor plan as you and keep the thermostat at the same temperature, but you are paying more every month to the utility company, those are familiar stories to our energy auditors at Green ID. As a rule of thumb, an energy efficient home will have a HIGH energy bill of $100 per 1,000 sq ft.  So if you live in a 2100 sq ft home, your highest energy bill in July or August in Phoenix should be no more than $210 - $230… That said, how does your home measure up? Chances are if you are reading this post trying to solve why your APS or SRP energy bills are so high than your utility bills are maybe 1.5 – 2 times higher than our threshold.  

Here are some reasons why your energy bills are so high and some DIY fixes you can do to lower them

1. The pool pump is over-used.  If you have a pool, it is often easy to forget that the pool pump even runs at all if it is programmed to turn on at night and you have someone else doing the pool maintenance.  The pool pump can be the second biggest energy user in your home, and draw more power than even your water heater! Make sure your pool pump is calibrated to your pool size, filter type and piping configuration.  You’ll also want to turn the run time down in the winter months. If you haven’t already, upgrade your pool pump to a variable speed pool pump. The payback is 2-3 years and you’ll lower your energy bills just by changing your pool pump. APS and SRP offer rebates and Green ID is a certified variable speed pool pump installer to make sure your pump is calibrated exactly to your pool specifications.
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2. The attic insulation is low.  Not that long ago, the code for attic insulation was less than half of what it is today.  If your home was built more than 20 years ago, your attic has likely been costing you hundreds of dollars on overspent energy bills every summer, not to mention the overtime it causes your air conditioning system to run. Even in newer homes, our energy auditors have found some rooms with zero insulation above them!  Oops, I guess that never got checked in the final walkthrough. On other homes, the insulation may be installed completely wrong, cutting it’s R-value (how well it resists heat gain) by 50%. Yes, it’s common to find attic insulation done wrong by even the most experienced insulation companies, because they often just blow-and-go.  Here’s how insulation can be done wrong, and how insulation should be installed. 
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3. Ductwork is undersized.  At Green ID we say your air conditioning system is only as good as the ductwork that delivers it.  If you have a 5 ton air conditioner but your ductwork is sized for only a 4 tons of airflow, that will cause high energy bills and hot rooms in the summer. Even in newer homes, air conditioning contractors are still not getting it right, and putting undersized ductwork on new units. When a new air conditioner is installed on existing homes, the ductwork sizing is never spoken about, let alone actually measured. Unfortunately, this is a little known problem in Phoenix homes that Green ID energy auditors are trained to make the proper diagnosis for and remedial action.
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4. Leaky ducts. The culprit of high energy bills may be leaky ducts. In a typical home, APS and SRP estimates about 20% of the air that moves through the duct system is lost because of improper installation. Most homes in Arizona have the ductwork located in an unconditioned attic space, where temperature differences can be extreme and any leakage results in the HVAC system working even harder. Flex ductwork is commonly used in Phoenix homes built in 1980 or later. This type of ductwork became popular because of it's simplicity to install, however, best practices in duct design and sealing and installation are rarely followed or simply ignored. While sheet metal ductwork is better for airflow and durability than flex ductwork, homes built with sheet metal ductwork are never sealed and typically leak 20% of the conditioned air into the attic.  ​
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5. Poor airflow causing one room to be hotter than the rest of the house.  Of course, this one hot room is your master bedroom or another room you use often, and you find yourself needing to overcool the entire house just to stay reasonably comfortable in your one room! This causes your air conditioner to run longer and energy use to increase. Causes could be from a longer duct line furthest away from the air handler, or even a bad duct design with kinks, u-turns and improper size.
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6. Hidden energy vampires.  These may not be as obvious as your heating and cooling system, or even the insulation.  Many homeowners are stumped as to why their energy bills are so high when they have a newer home with good insulation levels.  The answer is energy vampires. At Green ID, our energy auditors are trained to uncover hidden energy vampires that may be lurking around your home and driving your energy bills much higher than your neighbors. It will likely make perfect sense when our energy auditors tell you about your hidden vampires, but often times people need a trained eye to uncover additional energy sources.
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Most homeowners never realize that having low energy bills, fixing hot rooms and making the home comfortable all year long is entirely possible without putting expensive solar panels on the roof! High energy bills may have less to do with what temperature you keep the thermostat at, and more to do with how the home was originally built. 

Stop giving too much money to APS and SRP and call (602) 926-1650 to get a free home energy audit when you mention this post to see how much you can save.
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Why Are My Air Conditioning Coils Freezing Over?

11/28/2016

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Ever wonder why your air conditioner is supposed to be running but only hot air is blowing out of the vents? Have you gone outside to find a ball of ice has formed on your coils until they are frozen over? Ice on your air conditioning unit may seem strange, but it’s just a diagnostic signal of what needs to be repaired on your air conditioning unit.  Here are some DIY steps you do to try to fix the ice problem yourself, and if not, we’ve listed the likely causes why the coils are freezing over so that you can better educate yourself. 

If you notice ice forming on your air conditioner coils, take these immediate steps to prevent further damage to your HVAC system.
1. Turn the system off completely

2. Change your air filter. This is such a simple fix but it can potentially save you a service call. It is true that having dirty air filters can stop enough airflow in the system to cause ice to fill up in your unit.

3. Check that all the supply and return grilles are not blocked and completely open. Restrictions at the registers can be big enough to significantly lower airflow which can cause ice to build up on the refrigerant lines.
4. At the thermostat, turn the heater or air conditioner off and the fan on​. This will speed up the process to defrost the ice. The reason the coils are freezing over is because the refrigerant is getting cold enough to freeze, probably because there is a leak or restriction in the system. It can take 60 minutes or more to defrost the ice depending on the severity, so be patient.
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5. Once the ice is completely melted, set the thermostat back to cooling mode and keep a close eye on the coils to see if they start to freeze up again. If changing the filter does not fix the problem call your trusted HVAC technicians at Green ID to properly diagnose and repair the problem.

Why Is Ice Forming On Your Refrigerant Lines?

​There are several reasons why your air conditioner coils start to freeze and form massive blocks of ice. Here is a short list of some of the reasons why that occurs.

1. The air conditioning system is low on refrigerant. If not enough refrigerant was added when a new unit was installed, or there is a refrigerant leak in the system, the coils can easily ice up.


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​2. The filters are clogged. A clogged filter will restrict the airflow into the system. Depending on how clogged it is, this can severely limit the amount of air that passes over the coils, which is necessary to remove the heat or cool air from the home (depending on the season). Filters should be changed regularly, about every 30 days in the summer in Phoenix.
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3. The air conditioning filter dryer is clogged. The purpose of the filter dryer is to protect the compressor from debris and contaminants. Air-conditioning filter dryer becomes clogged refrigerant will not flow through freely and will start to build up causing the coils to freeze. A Green ID technician can check if the filter dryer is clogged and make the necessary replacement to get the system working properly again.

4. The air conditioner system has a refrigerant leak. A refrigerant leak can occur over months before you ever start to notice any changes in your comfort or energy bills or it happens quickly. Either way if your air conditioning system does not have enough freon to remove the cold air from your house in the winter, and the warm air in the summer, your coils will start to freeze and ice up.

5. The air conditioner blower speed is set too low. The blower speed may have not been set right or changed during your last air conditioning service. This may have been done to make the air colder air coming out of the vents but can have the negative effect of not transferring enough heat across the evaporator coils. And our air-conditioning technicians will inspect the fan settings at the air handler or furnace and the thermostat wiring to ensure your system has the proper airflow to prevent icing up.
6. Dirty evaporator coil. If your indoor coils have never been cleaned there is likely a healthy layer of dust covering the coils which will cause the coils to freeze up.

Some air-conditioning systems are equipped with a defrost mode that will automatically melt the ice off the coils once. When the air conditioner is running in defrost mode hot air well actually blow out of the vents even if it's the middle of the summer. If you feel warm air coming out of your our vents it's probably your defrost sensors working to melt the ice off your evaporator coils.
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    If you need an emergency AC repair without the emergency AC fees call Green ID at (602) 926-1650 and get your AC repaired today. Mention this blog to get a free trip charge and 5% off any repair.
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Best Priced Heat Pumps in Phoenix

11/3/2016

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If you are doing your research looking for the best priced, most inexpensive heat pumps around Phoenix, we at Green ID have put together a short list of heat pumps you can use as a quick reference.  We understand that finding an inexpensive heat pump that lasts for years and saves money on your energy bills is a top priority. You’ll be glad to find inexpensive heat pumps from a variety of AC brands that don’t break your budget or compromise on quality.

Tips From A Heat Pump Contractor On Buying An Inexpensive Air Conditioning Unit

Here are a few tips help maximize your dollars to find the best priced, inexpensive heat pump for your home. 
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1. EER (pronounced “ear”) is more important than SEER in Arizona.  SEER is how we measure the efficiency of the heat pump, the higher the SEER rating, the more efficient it’s operation is and less you’ll spend on your energy bills. EER is almost exactly the same as SEER but it is how we measure the efficiency of how the heat pump operates at higher temperatures, like in Phoenix.  The SEER rating is done in an air conditioned factory at 76 degrees, EER ratings are done at 95 degrees. You want the heat pump that performs well at higher temperatures, so ask about the EER rating of the system.  Often times you can have two air conditioners that have the same SEER rating, but different EERs.  If they are the same cost, you can claim more energy savings for free!

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2. Don’t just consider a unit upgrade, discuss the whole house and see if it’s feasible to go with a smaller heat pump with a Manual J calculation and a home performance upgrade. Sometimes we can save a homeowner more money by upgrading the insulation, sealing the ductwork, and sealing all the leaks with a lower SEER, rather than spending more money upfront on a higher efficiency unit but not addressing the other attic issues.  Another example would be having existing ductwork that’s designed to handle only 3 tons of air on a 4 ton system could be the cause of rapid aging of an air conditioner.  Have an energy audit performed on your house by Green ID as part of the heat pump replacement scope can help save on upfront costs and operating costs.

3. Ask about rebates and current promotions.  Often manufactures will have separate running promotions that bring down the cost of heat pumps and air conditioners.  Sometimes the rebates come from manufacturers who are less known, but still have a good reputation for quality, where you can get a more efficient unit for the same price as a standard heat pump from a better known manufacturer.

5 Best Priced and Reliable Heat Pumps

​We have installed and serviced each manufacturer on our short list of the 5 best priced heat pumps for the Phoenix market to ensure you are getting a well-made air conditioner at the best price.  All of these heat pumps feature upgrades like rust resistance screws, hail protective guards and 10 year warranties.  

 #1 Trane XR14

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​Trane’s inexpensive XR14 heat pump line is just as reliable as its higher end models.  Efficiency ranges are SEER 14 – 14.5 and EER 11.0 – 12.0.  Trane has an optional indoor air quality filter to cut down on household pollutants and dust.  We service all Trane units, are certified Trane dealers and have seen minimal issues with the quality of their units.  Learn more about Trane heat pumps here.

#2 Carrier Comfort Series

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Carrier features SEER rating up to 16 and features a quiet, low decibel sound.  Carrier is a big advocate of its dealers to perform a load calc on your home to ensure the right size unit is installed to avoid call backs.  At Green ID we always perform load calculations with our energy audits and never take short cuts that most contractors do which lead to high energy bills and hot rooms in the summer. Read more about Carrier heat pumps here.

#3 Day and Night Performance Series

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​Day and Night heat pumps are very space friendly, often with a smaller footprint than other manufacturers for installations in tight areas.  Day and Night has efficiency rating of SEER 14 – 14.5 and EER 11.5 – 11.7, with ultra quiet systems no lowers than a common hair dryer.  Learn more about Day and Night heat pumps here. 

#4 Rheem Classic Series

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Rheem requires all their dealers to perform a load calc on your home to ensure the right size unit is installed.  At Green ID we always perform load calculations with our energy audits and never take short cuts that most contractors do which lead to high energy bills and hot rooms in the summer.

#5 Frigidiarie’s F-Series

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Frigidiarie’s F-Series' warranty is fantastic: if any major component is defective within 10 years of its installation, Frigidiare will replace the entire unit, not only the defective part.  Efficiencies range from SEER 14 – 15 and EERs 11.5 – 12.5.  Learn more about Frigidaire’s inexpensive AC units.

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​Why Do I Need a Load Calculation?

When purchasing a new heat pump, it’s very important that a complete evaluation, or “load calculation” is performed. When doing this, a Green ID consultant will look at all factors that can affect the heat gain and loss of your home.  Bigger is not better in the air conditioning and heat pump world. We take into account the size, shape, and orientation of your home, what type of insulation and how much you have is also important along with window size, type, quantity, and the directions they face. We will also perform a leakage test of the ductwork and air leaks. 

By combining these and other factors, your Green ID consultant will evaluate what size unit your home requires.  An over or under sized unit is one of the most common problems with any system; when a licensed Green ID technician performs a load calculation, you will have a more efficient system and a more comfortable home.

Why Super Low Cost Heat Pumps Can Cost Homeowners In The End

At Green ID we say, the most important day of an air conditioning system’s life, is the first day it’s installed. You can be sure your heat pump installation will be done by following the best practices that may cost us more, but are the right thing to do to keep your heat pump running smoothly for years.  We don’t take short cuts that save money to AC companies but end up costing the homeowner more on their energy bills and in the shortened life of its components. 

We are here to help, click here to contact us or call (602) 926-1650 today.
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