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Green Leaf A/C and Heating Blog

Welcome to our Learning Center. This is where we will post relevant information about all things heating and air conditioning.
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Understanding Why A Pilot Light Won't Stay Lit

Few furnace problems are as frustrating as a pilot light that goes out over and over--especially because this problem seems like it should be so easy to fix. The good news is that, with the right knowledge, the problem may indeed be a simple one. If you would like to learn more about troubleshooting a pilot light that won't stay lit, read on 

Pilot Light Mechanics

Your furnace's pilot light is located between the two gates on the main gas valve. When the pilot is running, a nearby thermocouple senses the heat and keeps the first gate open, thus allowing the pilot to remain lit. When the pilot light goes out, the thermocouple cools back off and sends a signal to the gas valve to close the first gate. This keeps raw gas from flowing out into the air of your home. 

Button Override

On the gas valve is a button that must be pressed when relighting the pilot light. This button simply acts as a manual override of the first valve gate. In other words, when you depress the button, gas begins flowing to the pilot, allowing you to light it with a long match or lighter. 

Here is where problems often occur. If you let go of the pilot button too quickly, you may find that the pilot sputters and goes out. This is because the thermocouple has not had enough time to heat up. Unless it reaches a certain temperature threshold, it will not send the signal to keep the valve gate open. Next time you try relighting the pilot, be sure to keep the button depressed for several seconds while the thermocouple heats up.

For more information about troubleshooting a stubborn pilot light, please don't hesitate to contact the experts at Green Leaf A/C and Heating.

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How to Improve the Indoor Air Quality in Your Home

When you took that big step and became home-owners you probably thought a lot about all the decorations you would add to the house to make it feel like home, the bbq's you would host in the backyard, the birthday parties you'd plan, and the memories you'd make in the process. You probably didn't think much about maintenance or your heating and air conditioning unit. However, over time, you've probably realized that they require a lot of attention. Your home's air quality is directly affected by your heating and air conditioning unit. This becomes a problem when mold and bacteria start to form, blow into your home, and get inhaled into your lungs. 

How Can You Improve Air Quality?

First things first, you always want to keep your heating and air condition unit properly cleaned and maintained. This will drastically help keep your air safe. But there are products you can add to ensure your home has the best air quality possible. 

Air Purifiers

When it comes to Indoor air quality improvement, air purifiers are the best product you can buy. If you suffer from allergies or get frequent colds, an air purifier will help you breathe easier and sleep better. High-quality, in home air purification systems, kill up to 99% of germs, pollen, and mold captured. It also fights hard, and effectively, against many common pathogens. Installing an air purifier gives you peace of mind and the freedom to breathe deep, knowing that the air you breath is clean. 


It's important to use high-quality filters and to change them regularly. These filters will trap dust and allergens before they escape into the air that circulates in your house. Not only do they keep the air your breath fresher and cleaner, but they also help eliminate the "dust smell" in your home. 

UV Lamps

The thought of mold and bacteria growing on your air conditioning and heating unit, becoming airborne, and filling your house is unnerving. And while keeping your unit clean and installing an air purifier will definitely help eliminate that danger, going a step further isn't a bad idea. UV lamps were designed to successfully prevent the growth of mold and bacteria in your home. If there is any mold or bacteria growing on or around your AC coil, the UV lamp will kill it, keeping you safe from any exposure. 

Any and all of these options are effective when it comes to giving you the best air quality possible. So, if you want to breathe deep without worry, please contact us today. We look forward to helping you improve the quality of air in your home.

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How Is Equipment Size Determined for my Furnace Installation?

Yes, size does matter, but, when it comes to a furnace installation, bigger is not always better. The proper sizing of your heating system is one of the most important aspects in your selection a new furnace. When you have a correctly sized furnace, it will give you a high level of comfort, while also providing the highest efficiency. If your system is too large, it will "short cycle," frequently turning on and off.

If your furnace is short cycling, comfort is limited due to the system repeatedly turning itself on and off, and will also decrease the unit's operating life. Regardless, the issue of sizing is not so critical that you must nail the requirements down to the very last BTU. New furnaces are most times sold in increments of 20,000-25,000 BTUs. Furnace manufacturers understand that home heating does not require exact BTUs, and so the units reflect this.

So, if you end up being off by 20 percent, there is no real issue. Regardless, if you discover that the heating requirement is roughly 10 percent or more above a chosen furnace's capacity, it is better to increase to the next size furnace. What is the best way to select the proper furnace size for your home? Have a heating contractor provide you with an evaluation of your sizing needs.

An experienced furnace installer will become familiar with your home's floor plan. However, if you receive multiple evaluations, expect that the heating contractors will likely not always agree on the correct size. Therefore, ask for some additional information. If heating professional uses only your home's square footage, there is no certainty the heating unit will work correctly. Heating industry studies have revealed that over 50% of the furnaces sold are "dramatically oversized." By this, they mean the furnaces are producing upwards of double the actual BTU's required, but the industry is working to fix this issue with training programs and industry standard sizing procedures.

What haven't we covered yet that is important to you? If you would like to talk about how equipment size is determined for a furnace installation, or need more information, please contact us.

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The Benefits of Upgrading Your Thermostat

Thermostats used to be ridiculously simple, but not in a good way. While there are some simplistic things that make life easier, outdated thermostats aren't one of them. As thermostats have leaped forward in technology over the past few years, more and more homeowners have started to realize the hassle that comes with their outdated versions, not to mention the added electricity expenses that accompany them. More and more people have been going forward with thermostat replacement and upgrades, even if their older version is still working. 

Why You Should Upgrade Before Your Old Thermostat Breaks

In some circumstances, it's a money-saver to use what you have until you no longer can. Outdated thermostats that aren't equipped with "smart technology" will actually cost you more money over time. While you'll be out the money to initially upgrade and install the new thermostat, you will begin saving money on electricity bills as soon as the new one is installed. On average homeowners who replace their outdated thermostats with upgraded versions save around 20% on their heating and cooling bills. So, over time, it'll actually cost you more to stick with your old version until it no longer works.

It Does the Work for You

Smart technology works for you, saving you money, by allowing you to program different temperatures for different times of the day. Are you going to be away from the house for a long period of time? Perhaps you don't mind the temperature being a bit warmer during those hours. If so, you can program a higher "set temperature" during those hours, and set it to cool down again before you come home. Do you get warmer at night while you're bundled up with covers? It's not uncommon to wake up in the middle of the night and feel suffocated by the heat. However, if you set your old thermostat lower, you might be too cold when you wake up. Again, programming comes to the rescue. Set your desired temperature lower for most of the night, but have it warm the house an hour before you have to wake up and toss the warm covers off. Another great thing about smart thermostats is that many of them will switch between heating and cooling for you, ensuring that on days where the outside temperature is all over the place, your house remains at the perfect, desired temperature. 

Easy Installation

It doesn't take much time or effort for our professionals to install your new thermostat, and once it's done your thermostat will automatically download any updates to the software that's needed over time. This will help keep you up to date with any and all advancements. Carrier Thermostats are compatible with almost any brand of heating or cooling system so everyone can reap the many benefits of the smart thermostat technology. 

We provide three different Carrier thermostats for you to choose from so that you can ensure you're getting exactly what you need for ultimate comfort. So, if you want to start saving on electricity bills and rid your life of the hassle that comes from outdated thermostats, please contact us to learn more about the thermostats we offer or to set up an installation. We look forward to hearing from you soon. 

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How Much Does Furnace Repair Cost?

In the winter, many homeowners and their families depend on their furnace to stay warm and comfortable. Unfortunately, furnaces sometimes break down at the most inopportune of times. If your furnace has broken down or is not working as it should, you may be wondering how much you can expect to spend on furnace repair.

How Much Does Furnace Repair Cost?

On average, homeowners pay about $300 for furnace repair. Of course, the cost of furnace repair depends on the size of the furnace and the extent of the damage. Therefore, some homeowners may spend as much as $800 to have their furnace repaired by a contractor.

Furnace Repair Cost Factors

If you want to estimate how much furnace repair will cost for you, it is important to consider a number of cost factors. If your furnace is under a warranty, you may be able to have the cost of new parts covered. However, you will likely still have to pay for the labor and the service visit itself.

On the other hand, if you don't have a warranty for your furnace, the furnace repair cost will depend on the problem. For example, an issue with the fan may cost you more because of the replacement parts. However, the condition, age, and size of the furnace will also influence the repair costs.

Before the cold winter months, it is important to have your furnace serviced and repaired, if necessary. For more information about the cost of furnace repair, don't hesitate to contact us

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Customer Reviews & Comments

Average rating for Green Leaf A/C and Heating is 4.99 stars of 5 stars - based on 92 reviews

We had Eddie come out and install a new air conditioner for us. He recommended we also update our thermostat to the new Carrier Cor model and I'm glad he did. I can program and operate the temperature from my phone so I always know it is set correctly. Thank you very much!

Hector G. - Round Rock, TX 78682