Carney All Seasons Blog: Posts Tagged ‘Geothermal’

Benefits to Cooling Your Home with Geothermal

Monday, August 20th, 2012

According to the U.S. Environmental Protection Agency, geothermal heating and cooling systems are one of the most energy-efficient, eco-friendly and cost-effective systems on the market today.  Call Carney Plumbing, Heating & Cooling with any questions you have about geothermal technology.

Cooling with Geothermal Has its Benefits

Cooling indoor air with geothermal energy has a number of benefits. Geothermal systems are highly energy-efficient, environmentally friendly, cost effective and have long service life expectancy. Because of the unique method of pulling cold temperatures from the ground or water through loop systems with a geothermal heat pump, geothermal systems are much more energy-efficient than even air-source heat pumps.

Geothermal energy is a renewable, sustainable energy source decreases your dependence on combustible energy sources.   Along with a significantly decreased reliance on combustible energy sources comes the added benefit of being highly cost-effective.

Since loop systems are placed underground and there are few moving parts to the heat pump, geothermal systems are known to last considerably longer than traditional air conditioning systems.

Geothermal energy can be pulled from the ground all year round through the geothermal heat pump, so during summer you can have cool air and during winter you can have warm air indoors.  This means year-round indoor comfort with one air conditioning and heating system, a great benefit.

As geothermal contractors in Langhorne, Carney understands everything about geothermal cooling systems and can help you determine whether it is the right cooling and heating system for your specific needs.  Contact Carney Plumbing, Heating & Cooling today!

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Features to Look for in Geothermal Heat Pumps

Monday, July 30th, 2012

Geothermal heat pumps are a wonderful technology that is now being used more and more in both the residential and commercial HVAC industries.  Carney Plumbing, Heating and Cooling has a team of Lansdale geothermal technicians that can help you understand the various features to look for in geothermal heat pumps, as well as being able to aptly perform geothermal installation and repairs.

There are a number of geothermal features that make this type of heating and air conditioning system a wise choice if you want to save energy and money on your monthly utility bills. Geothermal heat pumps utilize the more stable temperature found in the ground or from a nearby water source in order to produce either heated or cooled air, depending on the time of year and the need; therefore, geothermal heat pumps provide year-round comfort in one system.

Geothermal systems can utilize one of three main types of heat pumps: a closed loop system, an open loop system, or a hybrid system. The hybrid option utilizes a dual-source heat pump, which combines the use of a traditional air-source heat pump with a geothermal heat-pump (ground-source heat pump).

While the initial cost of installing a geothermal heat pump system tends to be more expenesive than other HVAC systems, they are easy to maintain and are some of the most efficient ways to heat and cool your home or business. Many on the market today have been awarded the ENERGY STAR label. With these models, there are often government incentives, such as federal tax breaks, for purchasing geothermal heat pump systems.

Additional geothermal features that are available include dual stage scroll compressors, chlorine-free and environmentally friendly R-410A refrigerant, quiet water valves, high quality blower motors, suction line accumulators, and heat exchangers. It is also good to look for a geothermal heat pump that is covered by a good warranty.

Carney Plumbing, Heating and Cooling supplies quality geothermal services in Lansdale, Pennsylvania and the surrounding areas.  As fully licensed geothermal contractors we have the field-experience and proper education necessary to work with complete geothermal heat pump systems. Let us help you understand the features to look for in these systems so that you can determine which geothermal energy system is right for your specific needs. Call us any time!

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Problems Caused by Poor Water Quality in Open Loop Systems

Monday, April 23rd, 2012

As geothermal heating and cooling systems go, an open loop configuration can be an excellent choice, provided the environment supports it. Open loop systems work very effectively and efficiently because the deep water is held at an almost constant temperature year round. This property makes it a very good source of heat for the geothermal system.

However, an important factor to consider before choosing an open loop system is the quality of the water coming from the source. Although you won’t drink the water, the quality still matters a great deal, as poor water quality can cause serious problems in your geothermal system.

Let’s take a look at some common water quality problems and the damage they can potentially do to an open loop geothermal system in King of Prussia.

 Mineral Deposits

If the water is filled with minerals — frequently called “hard water” — those minerals can be deposited within the geothermal coils. As they build up on the walls over time, they can slow the flow of the water or even clog it completely.

Hard water does not necessarily preclude the use of an open loop system. It just may call for extra maintenance, such as periodically flushing the system with a mild acid solution to remove mineral build-up.

 Impurities

Impurities in water, especially metals like iron, can also cause clogs. Most frequently this occurs in the return well of the geothermal system. Again, these impurities do not necessarily mean an open loop system can’t work for you, but you should consult with the contractor prior to installation for solutions to this problem.

 Particulate and Organic Matter

If you plan to use surface water such as a pond or spring as the source for your open loop system, make sure to test the water composition thoroughly. An excess of sediment or organic matter can clog up your geothermal system very quickly.

Ideally, these are all situations that your King of Prussia geothermal contractor will anticipate and discuss with you ahead of time, so that your open loop system can be installed in such a way as to preempt any problems with water quality.

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The History of Geothermal Energy

Wednesday, November 30th, 2011

Geothermal energy is nothing new – it just gets more ink because of its increasing use to naturally heat and cool buildings in Quakertown and around the county, leaving a smaller carbon footprint and providing for an efficient, more cost-saving method to achieve indoor comfort.

History shows that geothermal energy dates back over 10,000 years when American-Paleo Indians used hot springs for bathing and heating, possibly even as a source for healing. And geothermal energy is not just a North American “thing” either. The oldest known hot springs spa was built in the Qin dynasty in China in the 3rd century B.C.

Romans used the water from hot springs for their public baths. Geothermal water was also used by the Romans for treating skin and eye diseases. Minerals found in hot springs water has been long believed to have healing qualities. Geothermal water was also used to heat the buildings in Pompeii. Subsequently, building heat was obtained from under floor systems.

History notes that France is home to the world’s oldest known geothermal district heating system. The system in Chaudes-Aigues has been in use since about the 14th century. And starting in 1960, France began using geothermal heating for homes in other areas. Up to 200,000 homes in France are heated by geothermal means.

History also shows geothermal energy use during the late 18th century near Pisa, Italy. Geothermal energy had been used to extract boric acid from the Larderello Fields through the use of steam. In 1904 at Lardello Fields, steam was successfully used to generate power for the first time. At the time, geothermal energy was seen as the power of the future.

In the U.S. in 1892, the first district heating system in Boise, Idaho was powered directly by geothermal energy, and was soon copied in Klamath Falls, Oregon in 1900, where geothermal water was pumped under sidewalks and roads to help prevent freezing and ice build up. In New Mexico rows of pipe were placed underground to keep soil warmer for agricultural purposes.

A deep geothermal well was used to heat greenhouses in Boise in 1926.

For the residential market, an inventor built a “downhole heat exchanger” in 1930 to heat his house. The heat pump, which was invented in 1852, was patented to draw heat from the ground in 1912. However, it was not until the 1940s that the geothermal heat pump was successfully launched. Records show that the first commercial heat pump was put into use in Portland, Oregon in 1946. The first residential open loop system was installed in 1948.

In the 1960’s, the first large scale industrial geothermal energy power plant was constructed, producing 11 megawatts of geothermal electricity. From the 1960’s to the present day organizations and governing bodies have been set up to manage, research, and develop new and improved geothermal energy sites and technologies.

Today, there are many geothermal power plants in working order in the U.S. and across the globe.

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Is Geothermal Right for My Home?

Friday, August 12th, 2011

Geothermal heating is a great alternative to other types of home heating systems in Lansdale. It is safe and efficient, costs very little to operate and makes use of a great renewable resource right below our feet. But is it right for you? Well, geothermal heating may be the right choice for many people, but there are many things to take into account before you can determine whether or not it is the best choice for your home.

The first important thing to understand when you are trying to decide whether or not to go with geothermal heating is how one of these systems actually works. A geothermal system heats your home by extracting heat from the ground and then transferring that heat into your indoor air. This happens when liquid, usually water or antifreeze, passes through a loop of pipes installed several feet below the ground.

The liquid absorbs heat from the ground, which in the winter is always warmer than the air, and carries is back up to an air handler inside your home where that heat is allowed to disperse into the air. Once the air is heated, the air handler blows the air through a system of ducts throughout your house, providing a constant stream of heated air to all areas of your home. The liquid, on the other hand, simply cycles back through the ground loop to pick up more heat and repeat the same cycle over again.

Because a geothermal heating system does not actually generate heat, it requires very little energy to operate. This means that it is both very cheap for you to run and environmentally friendly. But since installing a geothermal heating system involves putting pipes in underground, it can be pretty expensive initially. However, as long as the amount you save every month on your heating costs is enough to offset the high initial price of installation, it is worth it to put down the money up front.

Another alternative, of course, is a more traditional air source heat pump. These are much cheaper to install and nearly as cheap to run. However, air source heat pumps are not as efficient when the air temperature gets below freezing as a geothermal system can be. If you live in an area with harsh winters, the geothermal heat pump is a better option than an air source unit.

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Is Geothermal Energy Renewable?

Monday, March 21st, 2011

Geothermal heating systems take heat from the ground and transfer it to your home. But how does this heat get into the ground in the first place? Conventional heating systems like furnaces use energy sources like oil or natural gas to generate heat. These energy sources are not renewable, and neither is electricity which is typically generated by burning coal or another non-renewable resource.

The renewable resources we usually think of first are solar and wind power. The sun, of course, will continue to shine and provide heat year in and year out whether we make use of it or not. Similarly, we cannot use up the wind. It will continue to blow no matter how many times it has blown before.

But what category does geothermal energy fit into exactly? Well, it is actually a renewable resource just like solar or wind energy. In fact, geothermal energy is a direct result of the sun’s heat relentlessly pounding the ground. The ground actually absorbs a considerable amount of the heat from the sun that reaches the earth every day, and that is the heat that your geothermal heating system is using to heat your home.

Of course, a geothermal heating system cannot run on geothermal energy alone. The indoor components of this heating system that keep the air flowing throughout your house must be powered by electricity. But the amount of energy needed to do this is much less than what you would need to use to run a furnace or other type of more conventional home heating system.

Over all, geothermal energy is an excellent and renewable source of energy. And once you have the heating system in place, you will need to spend very little to keep it up and running. It is an excellent option for many people, and can help to keep your home cool in the summer as well.

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Can I Use Geothermal Heat if I Live in a Cold Climate Where the Ground Freezes?

Friday, February 25th, 2011

Geothermal heat pumps are able to extract heat from the ground, even when outdoor temperatures are well below freezing. They use a system of pipes installed in the ground below or around your home to collect this heat and then return it to your home where it can then be used to heat the air. While these types of heating systems are certainly more efficient the warmer the ground is, they can be effective even in very cold climates.

This is true even in areas where the ground freezes from time to time or for parts of the year because the frozen layer does not typically extend more than three or four feet below the surface. As long as the pipes for your geothermal heating system are below this level, they will still be able to gather plenty of heat from the warmer ground below the frozen layer.

In fact, there are two different ways that the pipe loop for a geothermal heating system can be installed. Most geothermal systems have a horizontal pipe system which sits about four feet below the surface and extends out from the house. This type of installation is typically cheaper than the alternative, but it also usually needs to be larger. Plus, you need to have the space for it to stretch across.

On the other hand, a vertical installation goes straight down into the ground below your home. With a vertical installation, you can usually get away with less pipe overall, but you will probably pay more for the installation because it is harder to drill straight down than it is to dig out a relatively shallow trench to lay the pipe in.

However, if you live in an area that has particularly harsh winters when the ground can be frozen for significant periods of time, it may be worth it to opt for the vertical installation. That is because the further below the surface the pipes go, the farther away they will be from the frozen layer of ground.

With a vertical pipe installation, a geothermal heating system can work quite well in a climate in which the ground usually freezes in the winter. While you will always want to have a backup heating system in place in case of emergencies, this type of heat pump should be all you need under normal conditions.

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Will Switching to Geothermal Save Me Money?

Wednesday, February 23rd, 2011

There are simply a ton of different types of heating systems and they are each more appropriate in different situations. However, some are certainly always going to be cheaper to operate than others, although that alone may not make one or the other right for you.

In the case of geothermal heating systems, the operating costs are definitely quite low. But those are not the only costs you will have to think about when you are considering what type of heating system to put in your home to keep your heating bills down.

Geothermal heating systems do not actually generate heat – they absorb it from the ground. Because of this, they actually use very little energy when they are running. All you are really paying to power is the fan that blows the heated air around your house. Also, because geothermal heating systems are more efficient at extracting heat in below freezing conditions than traditional heat pumps, they can continue to keep you warm on their own in more extreme conditions.

Traditional heat pumps, while they also cost very little to operate, do sometimes need to be supplemented by more conventional forms of indoor heating like a furnace when temperatures outdoors get too low. This is not the case with geothermal heat pumps, so if you live somewhere that has colder winters, a geothermal heat pump may be just what you are looking for. Of course, you can always opt for a furnace instead, but these will definitely cost more to run than either type of heat pump.

When you are trying to assess whether or not switching to a geothermal heating system will save you money, you first have to start with the heating bills you currently have. Then, factor in the cost of the geothermal heat pump installation as opposed to the installation of a more conventional system.

You are then in a position to see whether or not the amount the geothermal system will save you each month is enough to offset the higher cost of installation within a reasonable amount of time. Of course, the savings will always eventually add up over time, but if the length of time it will take you to break even is the same or longer than the expected life of the system, it is probably not worth it to invest in this type of heating.

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Carney Plumbing, Heating & Cooling featured in The Air Conditioning, Heating and Refrigeration NEWS

Tuesday, December 21st, 2010

Carney Plumbing, Heating & Cooling was featured in The Air Conditioning, Heating and Refrigeration NEWS for its recent expansion into the geothermal market. (“PA Contractor Jumps into Geothermal”, December 13, 2010) The NEWS’ coverage highlighted the perfect match between the rigorous demands of geothermal installations and Carney’s long-time company philosophy, which focuses on offering customers the best value for their money rather than the absolute lowest price.

With geothermal systems in particular, the NEWS notes, skimping on quality to reduce price can be disastrous. Installing a geothermal loop requires excavation, which means that it’s important to get everything right the first time. If a low-bid contractor tries to cut corners by shortening the loop, only to find that the system doesn’t put out the right BTUs, re-excavating to extend the loop will be extremely costly – perhaps even prohibitively expensive.

To make sure this doesn’t happen to its customers, the Carney geothermal team checks and double-checks its load calculations to be sure that they install a geothermal loop that is the right size for the home. Carney also requires extensive training for all their geothermal installers, and will pay for any additional geothermal training an employee requests.

(Read more about how Carney makes sure that it gets its geothermal systems right every time.)

The NEWS article also emphasized the economic advantages of geothermal heating and cooling systems. Geothermal systems require an upfront investment, but they’re designed to last for 20 years, so a geothermal heating and cooling system is a great long-term addition to a home. Federal tax incentives and local utility rebates can help offset the installation costs, making the initial outlay much more affordable. The increase in comfort and the reduction in utility bills are immediate – and, the NEWS pointed out, the savings will only increase over time as the price of oil goes up and Bucks-Mont utilities are deregulated, leading to potential double-digit utility rate increases.

(Read more about why geothermal systems are well worth the upfront investment.)

Owner Kevin Carney is excited about the potential for geothermal. He told the NEWS that when installed properly, nothing comes close to geothermal “in terms of comfort, reduced energy expenditures, and equipment longevity”. One of his employees has already made the switch to geothermal, and Carney himself is planning to install a geothermal system in his next home.

Read more about geothermal heating and cooling systems in previous blog entries!

Geothermal – Get It Done Right!

Top Ten Reasons to Love Geothermal Heating and Cooling Systems

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Geothermal – Get It Done Right!!!

Wednesday, November 10th, 2010

As we wrote in last week’s blog post, everyone at Carney Plumbing, Heating & Cooling is really excited about geothermal energy systems. But…geothermal only works well when it’s installed correctly. If it’s not, then the geothermal system you install could wind up being nothing more than expensive waste of money – and you might even end up using more energy than you did before, not less.

In this blog post, we’ll explain how we make sure that we install geothermal systems properly so that our customers enjoy maximum comfort and savings.

To explain the secret to a successful geothermal installation, first we should explain how geothermal systems work.Arrows and blocks

Although the temperature above the ground can vary widely from summer to winter, the temperature underneath the ground stays fairly constant all year round, thanks to the hot molten rock that underlies the earth’s surface. Depending on latitude, the level of volcanic activity in the area, and the depth at which the geothermal system is installed, the underground temperature can range from 45 to 80 degrees Fahrenheit. Geothermal systems use underground pipes, called a loop, that circulate fluid in a loop into your house and back under the ground. In the winter, the loop brings heat up from the ground into your house, where it is distributed throughout your house via ductwork. In the summer, the loop pulls the hot air out of your house and discharges it underground.

So, what’s the secret to a successful geothermal installation? The most important thing is to correctly calculate the load (i.e. the number of BTUs the system has to generate to keep the house comfortable). This will ensure that the geothermal loop, and the equipment that keeps the fluid moving in the loop, are properly sized. If a contractor has cut corners by making the loop and the circulation equipment too small, the system will not keep your home comfortable.

At Carney, we receive a couple of calls every month from worried homeowners who are not comfortable with the geothermal systems they’ve had installed by other companies. When a Carney technician goes to check it out, we almost always find that the loop and the equipment are not big enough to properly regulate the temperature of the home. Although the smaller loop may reduce the cost of the initial installation, this is a false savings. A homeowner will have to supplement an improperly functioning geothermal system with other means, or sacrifice comfort – and the home’s overall energy consumption might even go up, not down, as a result! At Carney, we call this “getting geothermal in name only”, and we’re always upset when we see homeowners who’ve had this happen to them.

So how do we make sure this never happens to our customers? We start by making sure that all our technicians are fully trained. In addition to mandatory training, we encourage our technicians to sign up for whatever additional training they want – on us.

We also take great care when we design our geothermal systems – in fact, we probably spend more time on design than we do on actual installation. We do all our load calculations by computer and by hand so that we are sure of our results. And we get as many different minds working on the design as possible – for example, we ask drillers to provide their own independent assessments to make sure they tally with ours.

Our philosophy when it comes to geothermal is, “You cannot cut any corners.” We make sure we don’t – we pay attention to all the details so that when your geothermal system is done, all you have to do is relax and enjoy it!

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