Posts Tagged ‘Heat Pumps’

Pacific Beach Heating Tip: Components of a Heat Pump

Wednesday, January 4th, 2012

As every Pacific Beach heating contractor knows, because of their simply designed function – pumping heat one way or the other – heat pumps have relatively few components. However, these components do not work the way you might expect, if you are picturing, for example, a fan that blows heat in or out.

A heat pump operates on the same principle as an air conditioner or refrigerator, which may seem complicated at first, but it’s not. The heat pump consists of five main functional components, which are outlined below:

  1. The coils absorb heat from the surrounding air and channel it in or out of the home. There are two different types of coils in a heat pump. Condenser coils are outside the home transferring heat to and from the outside air. Evaporator coils are the reverse, transferring heat to and from the air inside the home.
  2. The coils are filled with a refrigerant, which is the medium that carries heat into or out of the home. On a cold day, for example, when the heat pump is in heating mode, the refrigerant in the condenser coils will absorb heat from the outside air, the flow inward into the evaporator coils, warming the interior of the house.
  3. The compressor pressurizes the refrigerant so that it is able to readily absorb as much heat from the air as possible. This is how your heat pump is able to gather warm air from the chilly outdoors to keep your Pacific Beach home warm.
  4. The reversing valve is the component that changes the flow of the refrigerant when switching from heating mode to cooling mode, or vice versa.
  5. Finally, the air handler is the fan component that distributed the heat throughout the house via your home’s ductwork.

While these are the five main components, there are several smaller parts involved within and alongside each of these, as well. You need not concern yourself with them, since you won’t have occasion to interact with them. A Pacific Beach contractor will be able to identify and repair any of the components of a heat pump as needed.

In addition to these five primary components, most heat pumps also include a heater pack, which is a bunch of actual heating elements for use when the heat pump cannot operate on its own. For example, you would turn on the “Emergency Heat” setting of your heat pump after a power outage to warm the refrigerant before use. That setting is supported by the heater pack.

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Common National City Heat Pump Problems

Monday, January 2nd, 2012

Heat pumps are great pieces of machinery to have in your National City home, but they are not perfect. They come with their own problems and issues. Usually these can be fixed pretty easily, but it’s good to know what you are looking for.

Below are some common problems encountered by heat pump owners, along with some brief troubleshooting and repair advice. However, for any serious repair job, it is recommended that you call in a National City professional to fix the problem. This is to ensure the best performance of your heat pump, as well as for your own safety.

  1. No Heat – Obviously, this is a problem. A heat pump should do two things—heat and cool. If it’s not heating at all, something is wrong. Sometimes, this is just a matter of the power supply being interrupted. Press the “Reset” button on the power supply. If that does not fix it, it could be that the power supply has failed or the motor is overloaded.
  2. Incorrect Temperature – For example, you set the thermostat at 72 degrees, but even after several hours, the temperature won’t get over 70 degrees. This can be a problem with the sensor in the thermostat or with the heat pump itself. However, it could also just be the result of very cold temperatures outside. Heat pumps have trouble keeping up when the weather is consistently below 30 degrees Fahrenheit or so, so it may just need help in the form of a supplemental heat supply.
  3. It’s Noisy – Heat pumps are generally designed to run very quietly, so if you notice a lot of noise, there is probably something going on. Common culprits for this type of issue include loose connections, like screws, nuts and bolts. Check for any loose fittings on the heat pump. Also, make sure the contractor who does your annual heat pump inspection tightens these fittings as part of his maintenance routine.
  4. Frozen – This can be indicative of a few underlying problems, but the most common is dirt in the air filter. When filters get clogged, the heat pump can get frosted, ultimately leading to freezing. Check the air filter and make sure to change all air filters regularly.

Heat pumps can experience other issues, but these are some of the more common ones. Generally, though, heat pumps are pretty headache-free machines. Be sure to call a National City professional repair person if you experience any issues with your heat pump.

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San Diego Heating Contractor Tip: EnergyStar Rated Heat Pumps

Wednesday, December 28th, 2011

If you live in San Diego, you are almost certainly familiar with EnergyStar ratings. They are those little stars you see on a lot of common household appliances, consumer electronics and other products. EnergyStar is a government program run by the Environmental Protection Agency and the Department of Energy to identify and clearly label products that meet strict efficiency guidelines. Products that carry the EnergyStar logo have been shown to be among the most highly efficient out there.

This labeling is important and arguably becoming more so every day. Homeowners want the peace of mind that comes with knowing that the appliances in their homes are running efficiently, helping the environment and saving them money.

But have you ever wondered how a product gets to wear that EnergyStar logo? What are the guidelines it has to meet or exceed in order to be approved?

The short answer is that it varies across product lines, as you might expect. An air conditioner is very different from a personal computer. For heat pumps, though, there are some pretty simple and consistent specifications to meet.

Heat pump ratings are based on two numbers—one for cooling and one for heating. Cooling efficiency is rated on a scale called the seasonal energy efficiency ratio, or SEER. This number simply describes in a nutshell how efficiently a unit can cool the area it’s installed in. Most heat pumps these days have a SEER of at least 10, and the most efficient ones carry a SEER of around 18. To meet EnergyStar requirements, a heat pump must carry a SEER of at least 14.

The second number involved in rating the efficiency of a heat pump is the heating season performance factor, or HSPF. This number describes the heating efficiency of a heat pump by dividing its estimated heating capacity by the amount of electricity it draws. Most new heat pumps have an HSPF of at least 8, which is what is required for EnergyStar approval.

A third rating criterion for heat pumps is the energy efficiency ratio, or EER. This is like SEER, except that it is an instantaneous measurement rather than one over a whole heating season. This rating is less commonly considered by consumers, but it is part of the EnergyStar criteria, so it’s worth mentioning. EnergyStar requires heat pumps to have an EER of at least 11.

Only when a unit meets or exceeds all three of these specifications is it eligible for EnergyStar approval. Keep in mind that the requirements vary for split systems versus single package systems, and that they may change over time. Consult with a professional during the purchase process to be sure the unit you want is EnergyStar approved.

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Carmel Valley Heat Pumps and Energy Efficiency

Monday, December 26th, 2011

Heat pumps offer a number of great benefits. For one, they are inclusive heating and cooling solutions, so they can maintain your Carmel Valley home at a comfortable temperature year round without the need for an additional system.

They run on electricity, so you don’t have to worry about the inconvenience of additional bills and keeping a fuel supply around. They are also quiet and relatively easy to maintain—the list goes on and on. The point is, provided you live in a climate where heat pumps can operate properly, they make for great heating and cooling options.

One other huge advantage of heat pumps is that they are very energy efficient, often much more so than other heating and cooling options. For one, the heating efficiency of heat pumps can range from 150-300%, meaning that the amount of heat energy they are able to produce is 1.5 to 3 times greater than the amount of electricity they draw to do it. That is an incredibly efficient exchange.

The United States Environmental Protection Agency awards the EnergyStar to devices and appliances that surpass energy efficiency guidelines. Heat pumps that have earned the EnergyStar are even more efficient than their brethren, sometimes by as much as 9%, according to the EPA. If you have an older heat pump in your home already, a newer EnergyStar rated model may be as much as 20% more efficient.

While these numbers by themselves may not seem Earth shattering, consider two things. First, in an age of constantly escalating energy costs, any savings are welcome. Second, rewarding energy efficient homes has been a focus of the federal government for a few years. To that end, homes with EnergyStar rated heat pumps installed may be eligible for a federal tax credit of up to 30%. So, not only do these devices help you save on your bills, but on your taxes as well.

The benefits of heat pumps are numerous, but perhaps none is a bigger plus than their extremely efficient use of energy. You can save electricity and save money, all while keeping your home comfortable year round.

If you are considering a heat pump for your home, these benefits are important to keep in mind while making your decision.

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Easy Ways to Lower Your Heat Pump’s Energy Bill: Some Pointers from San Marcos

Wednesday, November 16th, 2011

One of the biggest advantages of a heat pump is that it is highly efficient for both heating and cooling your San Marcos home. However, there is always room for improvement, 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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