Posts Tagged ‘Heat Pumps’

Duluth Heating and Cooling Guide: History of Heat Pumps

Monday, April 9th, 2012

Thermal energy is the natural movement from warm temperatures to colder temperatures creating energy in the change of temperature to the mass.  A heat pump typically is a device that moves the air (or other matter) in the opposite direction from its natural flow.

A heat pump often uses an intermediate fluid called a refrigerant which absorbs heat as it vaporizes and releases the heat when it is condensed,  using an evaporator to absorb the heat (or energy) from inside an occupied space and forcing this heat to the outside through the condenser. The key component that makes a heat pump different from an air conditioner is the reversing valve which allows for the flow direction of the refrigerant to be changed, allowing the heat to be pumped in either direction.

Timeless Technology

While mechanical movement of this energy, what we can actually call a pump,  has been a relatively recent invention,  the concept of this principal of physics has been in use since ancient times. Harnessing the power of geothermal energy (produced from the heat of the earth itself), natural hot springs “pumped” warm air into cool spaces in China and Europe thousands of years ago.

By 1852, Lord Kelvin had theorized the heat pump, but it took nearly 100 years to actually build one.  In the last half century, the technological advances have made heat pumps part of our lives in many ways.

First Pump

In the 1940s a man named Robert Webber was motivated to build the first known heat pump while tinkering with his refrigerator.  Accidently burning his hand on the outlet pipes of the cooling system, he was quite painfully awakened to an idea about the transference of heat.

Recognizing the freezer was constantly producing heat to cool its interior, he connected the outlet pipe to the storage tank of his hot water heater, extended that into a flow through pipes which heated air nearby, and  then used a fan to blow the warmth into another room.

The first heat pump was a crude, but effective method to provide comfort.  Creating a full-size version soon after, Wagner could heat his entire home.

Heat and Electricity

Today, Duluth heat pumps are built in many ways and shapes to heat or cool buildings of many sizes. As technological improvements are refined during this time of climate change and dwindling fossil fuels, heat pumps promise to play an important part in our futures.

For more information about any Duluth HVAC system, give Triad Mechanical a call today!

 

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Arcade Heat Pump Guide: The Defrost Cycle

Monday, January 9th, 2012

If your Arcade home has a heat pump, you’ll want to understand the defrost cycle to help you maintain your heat pump and troubleshoot repairs. While this is a basic guide, you should call a qualified HVAC technician if you experience major issues with your heat pump.

During the winter when a heat pump is heating your home, the cooler outdoor air that’s pumped in and heated may have excess moisture. The outdoor coil evaporates this moisture, but under certain weather conditions, frost can accumulate on the coil and decrease the overall efficiency of the heat pump.  To help reduce the potential for damage from the frost, heat pumps are manufactured with a defrost cycle to melt the frost from the outdoor coil. The defrost cycle occurs often during heavy frost conditions, so check weather reports if your defrost cycle seems to be running often.

At the beginning of the defrost cycle, the heat pump switches to the cooling mode and temporarily warms up the outdoor coil until it reaches somewhere around 60° F to melt the frost from the coil. To increase the temperature of the coil, the outdoor fan is prevented from turning on until the outdoor coil reaches the desired temperature. Weather conditions and the timing device both affect the amount of time it takes for the heat pump to move through the entire defrost cycle.

In older homes, electric heating elements are sometimes installed to prevent cool air from being distributed throughout the home. This element will turn on with the defrost cycle and shut down the blower fan inside the house. If you have an older heat pump, you may want to consider upgrading to a more efficient model.

Call Triad Mechanical any time if you have questions about the defrost cycle for the heat pump in your Arcade home.

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Pros and Cons of Various Heating Systems in Tucker

Wednesday, December 21st, 2011

When it comes time to install a new heating system in your Tucker home, there are a lot of options to consider. Many people get overwhelmed when confronted with all of the furnaces, boilers and heat pumps on the market these days. So, to help you get a handle on what each has to offer and which will offer you the best benefits, here is an overview of the modern heating system market.

Furnaces

Furnaces are the core of a forced air heating system and use gas, oil or electricity to heat air which is then circulated through your home by a blower in your air handler. Furnaces are among the most fuel efficient heating systems on the market today with options available at up to 95% AFUE (meaning it uses up to 95% of the fuel consumed to produce heat). They are also inexpensive to install and while they don’t last quite as long as boilers, they are highly efficient when well cared for.

Boilers

Boilers use gas, oil or electricity to heat water or steam which is then circulated through your home into radiators or baseboard heaters. The heated water or steam releases heat into your home and heats it in turn. While not quite as energy efficient as a high efficiency furnace, boiler heat is perfect for homes with existing radiators and no room for vents and ductwork. It also has less of an impact on indoor air quality since there is no air movement and boilers tend to last a very long time when well maintained.

Heat Pumps

Heat pumps are becoming increasingly popular, especially in milder climates where it rarely gets below 40 degrees F. A heat pump uses the same technology as an air conditioner to extract heat from outside using a compressor, evaporator coils, and condenser coils with refrigerant.

It is most efficient in the spring and fall when temperatures are mild, but it uses much less energy than either a boiler or furnace and it can be used in the summer to cool your home. When properly maintained, a heat pump will last 10-20 years and save quite a bit of money, though it is recommended that you have an emergency heat source for days when the temperature outside gets below 40 degrees F.

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Troubleshooting Your Heat Pump Problems in Buckhead

Monday, December 5th, 2011

If your Buckhead home’s heat pump isn’t working properly, there are a number of things that might be wrong. But, where do you start and how do you solve these problems quickly and inexpensively? Here are some tips for common heat pump problems.

Low Air Flow

Your heat pump is designed to provide steady air flow to the entire house. When it was originally installed, the technician sized it to do so. If it suddenly stops providing enough air flow to your entire house or if the air flow it provides isn’t as comfortable as you’re used to, something is probably wrong.

More specifically, there is likely an issue with the heat pump itself since the device will compensate for most external problems by running longer and harder. A quick inspection will often rule out serious problems, so you should have someone inspect your device as soon as you notice a problem.

Leaky Duct

If there is an external problem, such as leaky ductwork, it tends not to be as noticeable right away. Often, when ducts are leaking, air flow problems will occur only in certain rooms of your home. Even then, the heat pump might be able to maintain the right temperature in those rooms – you’ll just have a higher energy bill because of the energy loss in the ductwork.

The best way to determine what is happening and how best to tackle the problem is to have someone test your ductwork for leaks, a relatively quick process.

High Energy Bill

If your energy bill suddenly increases dramatically, it is usually due to energy loss somewhere in the transfer between the heat pump and the rooms of your home. Leaky ducts can be the culprit, but so too can the air handler or the heat pump itself. If you notice a sudden increase in your energy bill, look for other symptoms like uneven heating or cooling in certain parts of your home or noises coming from the ductwork or your air handler.

No matter what other symptoms accompany the increase, you probably need repairs. Your home may still be comfortable now, but the heat pump can only make up for the problem for so long and in the interim, it is being put under excessive stress that reduces its lifespan.

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Easy Ways to Lower Your Heat Pump’s Energy Bill in Atlanta

Wednesday, November 30th, 2011

One of the biggest advantages of having a heat pump in your Atlanta home is that it is highly efficient for both heating and cooling. There is always room for improvement, though, so here some tips to lower your energy bill even more:

  • Get it checked. It’s been said many times before, but it’s always worth saying again: consistent maintenance is one of the biggest keys to keeping any appliance running efficiently. Get your heat pump inspected by a professional at least once a year. This will keep it in good shape and provide an opportunity to make small repairs, before they have a chance to turn into big problems.
  • Keep it clean. When it comes to HVAC equipment, a clean unit is an efficient unit. Check and replace the filters regularly, according to the manufacturer’s instructions. Keep the coils and fan clean. This will also be part of the annual maintenance, but you can – and should — do touch up cleaning on your own.
  • Install a thermostat. A programmable thermostat is a great energy efficiency tool for any home heating and cooling system, not just a heat pump. A thermostat will keep the temperatures lower during the day or any time no one is home, so that you are not wasting heat.
  • Let it run. It may seem counterintuitive, but turning off a heat pump to save energy may actually do more harm than good. Heat pumps operate most efficiently when they stay running on a regular basis. The components don’t need to take time to spin up, and the refrigerant stays warm so it can keep moving. Your best bet is to have your heat pump connected to a programmable thermostat, program it and then stop thinking about it. You’ll save a bundle over manual operation.
  • Protect the outdoor unit. The outdoor portion of your heat pump has to put up with a lot from the elements. Strong winds can damage them or negatively impact the efficient operation of the pump, so keep the outdoor unit protected from wind.

These simple measures, in combination with a highly efficient heat pump, will help slash your energy bills. In addition, check to see if your heat pump is eligible for a federal tax credit, which can save you even more money.

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Pros & Cons of Heat Pumps: Some Tips from Statham

Wednesday, November 23rd, 2011

When deciding on any major purchase for your Statham home, a critical step is to weigh the pros and cons. This helps you to decide on the best option and reach the best decision for your needs and preferences.

Installing a new heating system is a perfect example of a situation in which you would need to weigh pros and cons. There are a lot of options, and not all of them are right for all people. Take heat pumps, for example. They are great devices and serve many people extremely well as home heating solutions, but they are not without their drawbacks. Below are some of the pros and cons of heat pumps to help you decide whether a heat pump if the way to go for you.

Pros:

  1. Inclusive – A heat pump not only heats your home in the winter but also cools it in the summer, thanks to a reversing valve that changes the flow of the refrigerant. Having one appliance for both heating and cooling can be very convenient.
  2. Energy efficient – Heat pumps are extraordinarily efficient when it comes to energy use. Because they simply move and distribute heat, rather than producing any on their own, they use minimal electricity.
  3. Simple – Operating on the same basic principles as your refrigerator or an air conditioner, heat pumps are relatively simple. More importantly, they simplify your life by putting your heating and cooling solutions in one package and running on electricity, so you don’t need any other fuels on hand.
  4. Inexpensive to operate – In addition to being energy efficient – which lowers your monthly energy bills – many heat pumps are eligible for federal tax credit. You can save a bundle by using a heat pump.

Cons:

  1. May need supplementing in cold climates – In climates where winter temperatures stay below 30 degrees Fahrenheit for a while at a stretch, a heat pump will have trouble keeping up and need to be supplemented.
  2. Don’t work in power outage – Obviously, because they are powered by electricity, a heat pump won’t work in a power outage, unlike some other heating solutions that do not require electricity.

Although the pros clearly outweigh the cons here, the cons are important as well. Carefully consider all these factors and more while deciding whether a heat pump is the solution for you. And if you have any questions, talk to your Statham heating contractor.

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Malfunctioning Heat Pump Tips (and Happy Halloween Weekend!)

Friday, October 28th, 2011

Everyone at Triad Mechanical wishes you a Happy Halloween Weekend! Have a great time as a ghost, a goblin, or anything in between! And since nothing is more scary than when you heating system stops working, here are some things you should do if you have a malfunctioning heat pump.

In a perfect world, you would never have to worry about things like malfunctions or repairs. Everything would just work without ever needing to be maintained or fixed, and you could spend your time on energy on more enjoyable pursuits.

Unfortunately, no such perfect world exists. Things wear out and break down, often at the least opportune time. And of course, your heat pump is not immune. Despite being a great all around machine, a heat pump can malfunction, just like anything else.

But how can you know whether your heat pump is not working right? Here are some signs and symptoms that are often indicative of common heat pump problems:

  1. Too Much Noise – Whether emanating from your car or your usually quiet heat pump, noises are often the first sign that something is amiss. You should expect your heat pump to make some noise; the compressor and air handler are two culprits. However, if it starts making more noise than it did before, something may be up. Sometimes this is as simple as some loose fittings, but it’s still something that should be checked out.
  2. The House Is Too Cold – Obviously, if you get a heat pump to heat your house, you expect it to do just that. So, if your home is too chilly, you know something is amiss. If it’s way too cold, the heat pump may not be running at all, which can be the result of a serious malfunction. If it is only a few degrees below where you set it, it may be a different problem. It could be that something is malfunctioning in the heat pump, but it could also be that the outside air is too cold for the heat pump to keep the house warm. In that case, the best solution is supplemental heating.
  3. The Heat Pump Turns Off Too Soon – If your heat pump seems to be shutting off too quickly, it may be short cycling. That means that it is turning off before getting through its entire heating or cooling cycle. Frequently this is simply caused by dirt or debris around the outdoor coil, in the air handler or in the filter. Check these areas out and clean them. In general, you will want to keep the various components of your heat pump clean in order to ensure the best performance.

These are just some of the main symptoms of common problems. Other things can go wrong with your heat pump, although it is not very likely. As a general rule, if you notice your heat pump performing strangely or doing something it hasn’t done before, it’s best to get it checked out by a professional.

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Furnace vs. Heat Pump: A Guide From Conyers

Friday, October 7th, 2011

If you’re preparing to replace your existing heating system in Conyers, you may very well be struggling with the question of whether to go with a furnace or a heat pump for all of your future home heating needs. Each of these systems have their own advantages and drawbacks, and once you’ve narrowed it down to one type or the other, you’ll still have a pretty wide variety of products to choose from.

Furnaces are still the most popular type of home heating equipment on the market. You can get furnaces that run on gas, oil or electricity, although gas furnaces are by far the most common type of furnace around these days. The latest models are extremely energy efficient, with AFUE ratings reaching into the high 90%s.

Like heat pumps, furnaces use ducts to transfer heated air throughout your home. They typically require regular maintenance once every year or two depending on the type of furnace you have, and they can be expected to last anywhere from 15 to 25 years when properly maintained. Most modern furnaces are also made to be compatible with a central air conditioning or cooling system as well.

Heat pumps, on the other hand, don’t generate the heat that they circulate throughout your house. Instead they are able to extract the heat from the air outside and pump it inside. This means that they use much less energy than even the most energy efficient furnaces.

However, heat pumps are only capable of heating your house comfortably when the outside temperature is above freezing. If you live in an area with particularly long and frigid winters, you’ll probably find that you need to supplement your heat pump with another heat source. Because of this, it actually makes little sense to use a heat pump in more extreme climates.

On the other hand, if you live in an area with relatively mild winters, heat pumps can be a great option. They provide a constant flow of warm air to all parts of your home and can also keep you house cool during hot summer months. To cool your home, heat pumps simply reverse the process they use to warm it. They take the heat out of your indoor air and pump it outside. This is a very effective home cooling method and makes heat pumps a great solution for year round comfort.

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Is a Heat Pump Right for Your Home? A Guide From Marietta

Friday, September 16th, 2011

Deciding which type of home comfort system to go with in Marietta can be a difficult process to navigate. There are a ton of factors to take into account including how much you will be using the system, what type of fuel you mainly rely on and what the specific climate is like where you live.

Heat pumps are a great home comfort solution for many people but they aren’t always the appropriate choice. However, there are many benefits to going with a heat pump system, so this is certainly an option you should keep in mind as you evaluate your options.

Heat pumps work by extracting heat from the air in one place and then transferring that heat to another space. For instance, in the winter, heat pumps take heat from the outside air and pump it into your house. In the summer, on the other hand, your heat pump will be able to take heat from your indoor air and pump it back outside, thereby keeping your home cool and comfortable.

Heat pumps are also extremely energy efficient because they don’t actually have to generate the heat they pump. Unlike furnaces, which take in fuel and convert it into heat, heat pumps simply harness the heat that’s already there, making them by far the more energy efficient option.

Another benefit to heat pumps is that they maintain a more constant temperature than many other types of heating systems do. Rather than pumping in a big blast of hot air and then waiting until the temperature indoors falls below a preset level before doing it again, heat pumps provide a relatively constant stream of warm air.

The initial amount of heat is smaller than what you might be used to from a furnace, but the cumulative effect means that you’ll be able to enjoy a much more consistently comfortable indoor environment.

It is important to evaluate the climate in your area before you decide to purchase a heat pump, though. These systems are extremely effective at heating and cooling your home as long as temperatures stay above the mid-thirties.

Below that, you may need to install some type of supplemental heating in order to keep your home warm enough on those really cold days. So if you live in an area where temperatures routinely dip below freezing for large portions of the winter, a heat pump might not be the most sensible solution for you.

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