Boehmer Heating & Cooling Blog: Archive for the ‘Heat Pumps’ Category

Pittsburgh Heat Pump Question: Why Do Heat Pumps Need Refrigerant?

Monday, September 10th, 2012

Despite its name, your Pittsburgh heat pump is not designed solely for heating. In fact, the technology in your heat pump was originally designed for air conditioning and is used today in air conditioners, refrigerators and cooling units in vehicles and airplanes. And the entire process relies on refrigerant – a chemical compound that is compressed and expanded to move energy from one environment to another.

 How Refrigerant Makes Heating and Cooling Possible

Your heat pump has multiple components designed to transfer refrigerant from one state to another. The compressor, for example, compresses the refrigerant into a liquid. The liquid is then moved through the expansion valve to the evaporator coils where it expands into a gas. Because refrigerant evaporates at much lower temperatures than water, it does this rapidly and in the process draws heat from the surrounding environment.

That’s how an air conditioner or your refrigerator cool a space. However, in the case of a heat pump, the process can work in both directions. In cooling mode, your heat pump extracts heat from the air going into your home. In the case of heating mode, the heat pump extracts heat from the outside air. Because the heat is transferred into the refrigerant, it can then be recompressed by the compressor. The heat is then is then released in the condenser coils, where the gas returns to liquid state. A blower then distributes air blown across the condenser coils into your home as heat.

 Troubleshooting the Process

Your Pittsburgh heat pump is a complex piece of machinery, but once you know how it works, you can perform quite a bit of troubleshooting should anything go wrong with the device. For example, if you notice cold air coming from your vents, you can check to make sure it isn’t in cooling mode and that there is enough refrigerant in the device.

Keep in mind that if any service needs to be performed on the heat pump involving refrigerant, you should call a Pittsburgh HVAC professional due to the volatile nature of the chemical. In most municipalities, you must have a license to distribute or dispose of refrigerant and even if not, it can be dangerous to both you and the environment. Call Boehmer Heating & Cooling today for any help with your heating or cooling system!

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Pittsburgh HVAC Tip: How to Maintain High Efficiency Filters to Reduce Stress on Your Heat Pump

Tuesday, September 4th, 2012

The filter on your Pittsburgh heat pump is an integral part of your home’s comfort system. Without that filter, the device will quickly be subjected to an influx of debris and contaminants that can get into the machinery and the air being filtered into your home. As a result, you need to make sure you properly maintain the filters to reduce stress on your heat pump.

 Change Your Filters

High efficiency filters are designed to remove as much of the airborne contaminants in the air as possible. This is fantastic for keeping your indoor air clean. But if you don’t properly maintain the filter, air quality can worsen and your heat pump is put under unnecessary stress. Specifically, the extremely tight knit filter, designed to stop nearly anything from getting through, gets clogged.

Now your heat pump is forced to work much harder to draw the air it needs from outside and heat or cool your home. On top of that, the filter is filled with contaminants that can start to leak back into the air supply, actually making your indoor air quality worse than it would be otherwise. That’s why it is so important to clean your filters on a regular basis (for permanent filters) and replace them if they are one time use.

 Recommended Filters

You have options as to which types of filters you use for your heat pump. Filters come in multiple options, from super high MERV rated filters that trap up to 99% of all contaminants as small as 0.3 microns.

Electrostatic filters are especially efficient because they extract contaminants of all types – from dust and mold to smoke and gas fumes. A good filtration system should effectively remove anything from the air without needing replacement too often.

Permanent filters tend to offer the best protection against airborne contaminants and generally need to be cleaned once a month. HEPA filters are often permanent and while each filter is different, these are often extremely effective at minimizing contaminants in the air without putting stress on your heat pump.

We all know that high efficiency filters are great to have in your home because they remove contaminants from the air. This keeps your indoor air clean and healthy by preventing pollutants from circulating throughout your forced air system. But what most people don’t know is that if you don’t maintain your air filters, they can actually cause your heat pump to work much harder. When high-efficiency filters get clogged, they can restrict airflow and cause stress to your heat pump. Not to mention making your indoor air quality worse! The contaminants that were caught by the air filter might now start getting back into the air supply, acutally making your indoor air quality worse. It is easy to see why it is so important to change your Pittsburgh heat pump’s air filter regularly, especially if they are high efficiency.

To schedule any maintenance you need for your home’s heat pump, give Boehmer Heating & Cooling a call!

 

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Do you know how to maintain your heat pump?

Friday, April 27th, 2012

Heat Pump Maintenance | Pittsburg | Boehmer Heating and CoolingA heat pump provides a number of benefits over traditional heating and cooling. The versatility of a heat pump means having reliable comfort control every day of the year.  Generally heat pumps are more efficient, however they do still need to have some regular maintenance in order to make sure that they continue to effectively heat or cool your home. The average homeowner can change the filters monthly and make sure that the components are clean, but you will need a professional HVAC technician to perform some of the maintenance tasks. The technician will check things like the air flow and refrigerant charge, as well as inspect the electrical systems.

 

Annual maintenance will not only help you cut down on future repairs, but it will also save money on your utility bills. Check out our maintenance plans to help with your Pittsburgh area heat pump and home comfort system maintenance.

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McKeesport HVAC Tip: History of Heat Pumps

Monday, April 16th, 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.

Your McKeesport heat pump 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 McKeesport heat pumps are built in many ways and shapes to heat or cool buildings of many sizes. As technological improvements are refined, heat pumps promise to play an important part in our futures.

 

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Ross HVAC Contractor’s Guide: Heat Pump Load Calculation

Monday, January 2nd, 2012

When purchasing a heat pump in Ross, the first thing you should do is determine what type of heat pump you want and how big it needs to be to provide ample heating and cooling to your home. If you’re unsure what you need, here are some tips to size a heat pump for your home’s particular needs.

The Importance of Sizing

Before buying anything, consider the cost of an oversized heat pump. A lot of homeowners opt for the biggest device on the market, but they don’t realize that they’re paying more than necessary for their device. An oversized device cycles on and off more often than is necessary and wears down much faster, resulting in an increased electric bill and faster wear on the device. It’s not good for your heat pump or your wallet.

How to Size

To correctly size a heat pump, the first step is to perform a load calculation. This is done by measuring the total volume of the rooms being heated (in cubic meters) and then determining the heating factor based on the type of insulation used.

There are different measurements depending on the type and R-rating of your insulation. For example, a single external wall without any additional insulation has a heating factor of 15. The number of external walls, the insulation in those walls and/or the ceiling and the rating of the insulation will determine the total heating factor for the room.

You will then divide the room volume by the heating factor to determine the number of KW (converted to BTUs) needed to heat that particular room.

Professional Sizing

The reason it is so important to call a professional is that certain things, like poorly insulated windows, cracks in the foundation, leaks in the ducts and other issues can have an impact on the overall heating factor measurement. Additionally, the type of heat pump you choose must be effective when connected to an air handler for your entire home. A professional can make these measurements and ensure the right sized device is selected.

If you’re unsure about anything related to sizing and selecting a new heat pump for your home, call a Ross professional in. They will perform a full load calculation and present your options for a new heat pump based on those calculations.

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Testimonial – Harry from Pittsburg

Friday, November 18th, 2011

Harry from Pittsburg as impressed by our heat pump installation service; here is what he wrote to us:

“Thank you for efficient and careful installation of our new heat pump. The guys were great – professional, courteous, and so neat! Thanks to Steve for excellent advice.”

– Harry I.

Thanks Harry! And if you ever need any heat pump maintenance or repair, don’t hesitate to give us a call!

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Is a Heat Pump Right for Your Home? A Guide from Carnegie

Wednesday, October 19th, 2011

Deciding which type of home comfort system to go with in Carnegie 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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Heat Pump and Zoning or Zone Control Systems: A Tip From Bridgeville

Monday, October 3rd, 2011

When you’re putting in a heat pump in your Bridgeville home, it may also be a great time to look into having a zone control system put in as well. These types of systems can do a lot to both lower your energy bills and make your home as comfortable as possible throughout the year.

Zone control systems actually allow you to set different temperatures in different parts of your home. They use a system of dampers to direct more heat to certain areas and less to others. For instance, you may like to keep the living room nice and cozy in the winter because you’re typically just lounging around when you’re in there.

When you’re working in the kitchen, on the other hand, you’re usually generating some heat yourself from the stove and oven, so you don’t need to keep the temperature quite as high as it is in other parts of the house in order for the kitchen to remain comfortable. Of course, in the summer, these situations are likely reversed, and a zone control system will allow you to adjust accordingly.

Having the type of refined temperature control that zone control systems provide can be beneficial on several levels. It certainly helps make your home more comfortable, but it can also make it easier to reduce some of your home heating and cooling costs because you don’t have to heat or cool your whole house to keep it that way.

Zone control systems can also be a great way to end those constant thermostat battles that tend to erupt from when certain members of the household prefer one temperature, while the rest of the people in the house are more comfortable with another.

If you’re thinking of integrating a zone control system with your heat pump, you should make sure that the heat pump you get is as compatible as possible with this type of system. Most heat pumps will, in fact, work with zone control systems, but certain types are better than others.

The most important thing to look at when you’re trying to find the best heat pump to fit with a zone control system is the type of compressor the unit has. Heat pumps are available with one-speed, two-speed and multi-speed compressors and this affects how well they work at part of a zone control system. For best results, it’s good to opt for a two-speed or multi-speed compressor when you’re installing a zone control system as well.

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Heat Pump Noise Considerations

Monday, April 18th, 2011

Whenever you’re looking into replacing your old home heating system or installing a new one, there are many different factors you’ll have to take into consideration. The amount of noise that the system you choose will make is certainly one of these. And in addition to the amount of noise that this system will make, you’ll also want to make a note of where the unit will be placed and so where the noise will be coming from.

While you may have had to worry a bit about the noise generated by heat pumps in the past, it’s not something you’ll have to take into consideration this time around. That’s because newer heat pumps are designed to be quieter than ever, providing the same heating and cooling power with only a fraction of the noise of some earlier models.

In fact, the only part of a heat pump that really makes any noise at all is the outdoor unit. Unless this needs to be located very close to your home or to a window of a room that you use often, chances are that you won’t even hear it at all.

However, if you live very close to your neighbors or don’t have a lot of outdoor space, you may have to put the outdoor unit close to the walls of your home. Even then, though, you’ll hardly notice the noise your heat pump makes. Years of research and redesigning have produced some of the quietest heat pumps yet and that’s what you’ll be buying if you’re in the market for one of these systems now.

Newer heat pumps have been tweaked and adjusted to minimize the amount of noise-generating vibrations they produce. In fact, you’ll probably find that most of these units make no more noise than your refrigerator. They’re efficient and quiet and can keep your home comfortable all year long.

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Furnace vs. Heat Pump

Friday, April 15th, 2011

If you’re preparing to replace your existing heating system, 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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