Servicing HVAC Expansion Valves

May 24, 2016

The thermostatic expansion valve, or TXV/TEV, is an essential component of any HVAC system. Paying attention to how it is behaving, and servicing any issues, will ensure efficient functioning of your HVAC system. When to Service the TXV For the most part the thermostatic expansion valve will not need any maintenance if it was installed properly. The only real time it will need servicing is when something is wrong. And when something is wrong, it is a great tool to help diagnose what is wrong with the system, when looking at it symptomatically. There are three main symptoms that the TXV will manifest when something is amiss: starving, flooding, and hunting. Starving is when the TXV is not feeding enough refrigerant into the evaporator to equal the rate at which the refrigerant is being evaporated off. Symptoms of starving will include load temperature and superheat being too high. Superheat measurement is the more accurate way to verify this. The causes of starving include moisture being frozen in the valve, or foreign material in the lines which became stuck in the valve, blocking the flow of refrigerant. Installing a filter-drier ahead of the TXV will prevent this. The next symptom that...

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Understanding The Ratings For Furnace Efficiency

April 21, 2016

If you’re in need of a new furnace, one factor to take into account when weighing options is the Annual Fuel Utilization Efficiency (AFUE) rating of each unit. That rating explains how much heat the furnace will produce, in comparison to the amount of energy it requires to produce that heat. Understanding the AFUE rating If a furnace is rated at 85 percent AFUE, that means that 85 percent actually becomes heat, while 15 percent of the energy used is lost. It’s important to know that the AFUE rating does not include the potential heat loss that can happen through ductwork, because ductwork in homes varies. Ductwork can lose up to 35 percent of their heating efficiency. How to figure approximate AFUE ratings on older equipment While the Federal Trade Commission requires manufacturers to include AFUE ratings on all new furnace systems, older systems may not have a rating or it may be difficult to find that information on older units. Low-efficiency furnaces can be identified by the use of a continuous pilot light. Typically, these units are between 56 and 70 percent efficient. Older models that use a fan to control airflow and have an electronic ignition fall between...

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Do Programmable Thermostats Really Benefit Me?

March 23, 2016

If you’re still using a manual thermostat, you may be wondering whether it’s time to switch to a programmable variety. Programmable thermostats have a number of features and benefits that can help you save money on your utility bills and also experience increased comfort at home. Preset Solutions for Heating and Cooling A programmable thermostat allows you to set your heating and cooling for a specific temperature instead of having to manually change the setting. To shave money of your utility bill, have a “setback” period for at least eight hours each day. If you set your thermostat back just one degree for eight hours, you can shave 1 percent from your heating and cooling bill. Each additional setback back will save 1 percent more. Many people have their thermostats set to decrease by 10 degrees at night or at work, which lowers their expenses. Increased Comfort The ability to program your thermostat means you can set it to begin heating or cooling your home before you get there, or before you wake up in the morning. With this convenience, you don’t have to wait uncomfortably for your home to reach the ideal temperature. It’ll also save you money, as...

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How Ductless Mini-Split Heat Pumps Work

February 29, 2016

Today, homeowners have an unprecedented array of choices when the time comes to replace a heating/cooling system. For example, instead of installing a standard centralized system, you can opt for a new type of system arranged around something called a ductless mini-split heat pump. Here are a few details that help explain why this temperature control system has a broad-based appeal. Heat Pump Basics Heat pumps don’t directly generate heat like a traditional furnace or an electric furnace. Instead, they pull heat from the surrounding environment, concentrate that heat and conduct it into your home’s interior. Depending on the model in question, a heat pump may pull heat from the ground, from the outside air or from a lake or some other water source. Despite their names, heat pumps can also cool your home in the summertime. They achieve this goal by reversing the direction of their air flow and pulling warmth out of the interior of your home. Ductless Systems Most homes in America have a standard, centralized indoor ducting system that carries air to and from all connected rooms at the same time. The individual ducts in this type of system are usually placed behind walls, above ceilings...

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Choosing the Right Size Heat Pump for Your Home

February 26, 2016

Heat pumps are energy-savers and can operate effectively in a wide range of micro-climates. These dual-purpose appliances make functional and affordable additions to just about any type of HVAC system, and in places that don’t experience temperature extremes they may be able to handle the entire heating and cooling load. However, heat pumps are an efficient and sensible choice only if they are properly sized. If you buy and install a heat pump that is too powerful or too weak you will undoubtedly live to regret it. So how does one go about choosing the perfect size heat pump? By hiring an installation company that uses a method called Manual J, which we will explain more fully in the next section. What is Manual J and How Does it Work? Manual J is the standard procedure used by HVAC professionals to evaluate a home’s potential for heat loss in cold weather and heat gain when it is warm. Once they know what your true heating and cooling needs are, then and only then will HVAC technicians be able to make a correct determination about what size heat pump you actually need. The parameters HVAC installers use to make Manual J-based...

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Maintenance Checklist for Your Home HVAC Sytem

January 27, 2016

Maintenance is extremely important for your HVAC system, can you remember the last time your system was serviced? If you can’t then I would say it is time for your to make a simple call and have us come and have us perform a Quick and Simple HVAC System Maintenance on your unit. We service the greater Dayton, Ohio area.

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Home Heating Myths You Should Avoid

January 13, 2016

We have neared the winter season which means heating systems are primed up to work overtime for the same level of warmth. But instead of worrying about monthly utility bills, there are some changes you can make to save on energy and money. One has to do away with these home heating myths. Myths about Fireplaces Fireplaces or modern wood stoves seem cool and classy for heating the home, but they aren’t so kind on one’s wallet. The wood furnace needs oxygen for combustion and if the indoor heater is on, the supplied air from the heater goes directly to the wood furnace. This means your electric heater works twice as much to provide the same level of warm air, thus higher utility bills. Cranking the Thermostat Turning the thermostat all the way up never means your house will get heated quicker. This is totally false and never works at any point. The HVAC systems, at least the modern ones, are equipped to automatically regulate heating with relation to room temperature. Cranking the unit up will only make the heating system provide excess and unnecessary heat which will result into a waste of energy and high energy bills. Leaving a...

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What Is Two-stage Heating?

December 21, 2015

Single-stage heating furnaces are popular in hot, humid areas as well as those with cold winter climates. These are designed to offer indoor comfort for very hot and cold days. This means that the HVAC systems operate at full capacity, even when it’s not necessary. This is where two-stage heating and cooling units come in to help save resources. What is Two-Stage Heating? Single stage units are designed to offer the maximum heating level that the furnace can yield, irrespective of outdoor and indoor temperature levels.  This means that when the furnace turns on, it disperses the maximum amount of energy it is designed to produce. As such, this could result in high energy bills. Multi-stage HVAC systems are named according to the number of levels of operation. Unlike their single stage counterparts, 2-stage HVAC units have two levels of cool and heat output. When the temperature is mild, the systems operate on low and can adjust to high if conditions change. The first stage of such furnaces operates most of the time in many climates, and usually runs at about 65% of the unit’s capacity. The second stage provides additional heating when the first stage becomes insufficient to heat...

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Top HVAC Technologies For The Coming Year

November 19, 2015

According to the AHR expo that took place in January this year, the HVAC industry is changing for the better. The expo revealed that business men and women should be taking advantage or these changes that are coming. The main focus is on changing the way HVAC systems are made to become smarter, save more energy and become more convenient than ever before. As expected machines and control are becoming smarter than before. This is the main focus when creating these machines. The smarter these machines get, the efficient they work and the more money they save the customer. Even as construction continues to grow and more houses are being built, so does the need for the installation of HVAC systems. These installations are estimated to be on the rise for 2015. It is also rumored that HVAC service and maintenance will become more efficient via mobile. According to business development companies, HVAC systems will be linked to mobile phones and assist contractors in the preventive maintenance programs. As these HVAC systems become more complex and more integrated with smart phones, the amount and level of maintenance that they will need will also increase. As the construction industry becomes busier,...

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How To Ensure That Your HVAC System Is Free Of Legionnaires Disease

October 21, 2015

You’ve heard of the recent Legionnaires’ Disease outbreak in New York. The condition spread so quickly that more than 100 people were affected and ten have died. People living in the infected South Bronx building as well as people living six –seven kilometers away were affected with the disease. You are worried as you have a HVAC system in your building as well and you have a weak respiratory system. How do you make sure that building/residence HVAC systems are disinfected and clean? Let’s find out. Carry out a visual inspection of your building’s HVAC system. Check for particulate matter in the air vents and ensure that there is musty or dusty odor when the system is switched on. Make sure that your filters are replaced at least once in two months. Your HVAC system will have evaporator coils and condenser coils. These are very susceptible to fungus and mold growths. You may not be able to clean the coils at home by yourself. Anti-microbial treatments may be necessary. Regular maintenance is absolutely necessary. For a combined heating and cooling system, a maintenance check is necessary in the spring and fall. For a cooling system, an annual maintenance before the...

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