Heat recovery ventilators (HRVs) and energy recovery ventilators (ERVs) are balanced whole-home ventilation systems designed to provide fresh air supply in any weather. However, deciding which system to install may evoke confusion. Read on the understand the importance of ventilation and the difference between an HRV and ERV to help determine the right system for your Orlando area home.

Why Ventilate?

Daily ventilation is essential for maintaining a healthful indoor home environment. Balanced ventilation systems, such as HRVs and ERVs, simultaneously use intake fans and exhaust fans to maintain neutral air pressure in the home. If you have a leaky older home, it's advisable to seal up your home's envelope with caulk and weatherstripping. This helps prevent harmful contaminants from inside the attic, walls and crawl space being sucked into the living spaces.

Additionally, fresh air movement through newer and tighter homes helps mitigate moisture pockets that become "trapped" inside the home and inevitably contribute to mold growth.

Benefits of HRVs and ERVs

Both HRVs and ERVs use a heat-exchange core to "recover" the energy used to cool or heat your home. For example, during the cooling months, cooled indoor air absorbs heat from warm fresh supply air as it circulates through the core before it's expelled from the home. This heat exchange pre-cools fresh air intake and lightens the burden on the A/C.

Since HRVs and ERVs use much less electricity than your A/C or heat pump, you save energy dollars when compared to other ventilation systems without a heat-exchange core.

Best Choice for Orlando Homes

The only difference between an HRV and ERV is that an ERV exchanges water vapor between intake and exhaust air streams in addition to exchanging heat energy. While ERVs are not whole-home dehumidifiers, they do help reduce and manage high indoor humidity -- especially when working in conjunction with your A/C or heat pump. Therefore, most HVAC professionals and home builders would likely recommend an ERV for homes in the humid Orlando area.

If you have questions about choosing between an HRV and ERV for your Orlando area home, please contact Rinaldi's Energy Solution.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about HRV and ERV differences and other HVAC topics, download our free Home Comfort Resource guide.

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If the air quality in your Orlando home is less than ideal, it can negatively affect your health, causing symptoms like frequent headaches, congestion, eye irritation or exhaustion, and can worsen the effects of asthma, allergies or other breathing conditions. By improving indoor air quality with the following tips, you can protect your health and make your home more comfortable.

Attic and Basement

Seal roof and plumbing leaks, and reduce or eliminate other sources of moisture to prevent mold growth, which can seriously affect your health and cause damage to your home. Seal and insulate the attic floor and the floor above the basement or crawlspace to prevent airborne contaminants and moisture from flowing into your home, and to reduce heat losses and gains. Also, inspect any exposed air ducts, and have them sealed and insulated, if necessary.

Bedrooms

Choose bedding materials that are hypoallergenic and resistant to dust mites, and wash your bedding at least once a week in water that is above 130 degrees. Vacuum your bedroom and closets frequently using a machine with a HEPA filter, and turn on your HVAC system during the process to help control dust.

Kitchen

Repair any plumbing leaks and use exhaust fans while cooking or washing dishes to help keep humidity at healthy levels, between 30 to 50 percent. Take the garbage out frequently and wash kitchen surfaces often to reduce the growth of bacteria and mold.

Living Room

Reduce clutter, vacuum frequently and dust surfaces with a damp cloth or disposable electrostatic wipes to control dust. Seal windows and doors to keep out airborne contaminants.

Bathroom

Use the exhaust fan while bathing and wash surfaces frequently with a bleach solution to prevent mold and mildew.

HVAC System

Have your system professionally maintained at least once a year and change the air filter often to improve efficiency and indoor air quality. For better humidity control, consider adding a whole-home ventilation system or dehumidifier.

To learn more about improving indoor air quality around your home, talk to the HVAC professionals at Rinaldi's Energy Solutions, serving the Orlando area since 1969.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about indoor air quality and other HVAC topics, download our free Home Comfort Resource guide.

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Heat pump advantages continue to spawn steady growth in the installation of this energy-efficient heating and cooling technology. In the U.S., heat pumps now account for about 10 percent of the heating/cooling systems in residences. About 1.9 million new units are installed annually. In moderate climates like here in Orlando, where winter temperatures stay above freezing, heat pumps can efficiently extract indoor and outdoor heat to function as both an air conditioner and a heating system. In addition to savings on operating costs, heat pumps have many advantages over a central air conditioner.

Cooling And Heating From One Unit

An air conditioner cools your house by extracting heat energy from indoor air and moving it outdoors. Unlike a conventional A/C, however, a heat pump can move heat in either direction. During summer it absorbs indoor heat and disperses it outdoors just like an air conditioner. In winter, however, the process reverses and latent heat is extracted from outdoor air, concentrated, then dispersed indoors to warm the house. Today’s highly efficient heat pumps can extract sufficient latent heat from outdoor air down to about 25 degrees.

Lower Heating Costs

While the costs of heat pump cooling are equivalent to a standard central air conditioner with an equivalent seasonal energy efficiency ratio (SEER), heat pump heating costs are lower—often delivering savings of up to 30 percent compared to standard heating. Since the heat energy extracted from outdoor air is free, the only heating-related costs are the price of electricity to run the compressor and blower fan.

Simplified Maintenance

Because heating and cooling functions are now consolidated into a single unit, a heat pump eliminates the need to maintain a separate gas-fired or electric furnace. Maintenance requirements of a heat pump differs little from central air conditioner maintenance, mainly involving coil cleaning, refrigerant checks and blower fan upkeep.

For reliable facts and figures about heat pump advantages, contact the heating and cooling professionals at Rinaldi's Energy Solutions.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about heat pumps and other HVAC topics, download our free Home Comfort Resource guide.

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The HVAC industry describes the amount of conditioning homes need as heating and cooling loads. The load refers to the amount of work any system must do to keep the structure comfortable. HVAC professionals base the size of the systems they install on their capacity to satisfy three different kinds of loads.

Design Load

The most influential load HVAC engineers consider is the design load of structures. This load includes the layout of the building, its overall energy efficiency and orientation to the sun. Homes that have adequate insulation, thermal windows and little air infiltration have lower design loads. Two-story homes have different conditioning loads than single-story homes.

Extreme Load

The extreme load refers to the hottest and coldest temperatures any given place experiences. Unlike the design load, this load carries little weight when HVAC contractors calculate the size HVAC equipment needs to be. Extreme weather conditions seldom last long enough to have a measurable impact on the overall performance or comfort of a properly sized HVAC system.

Part Load

The part load, combined with the design load, weighs heavily on calculating the heating and cooling loads in terms of its capacity, along with the type of system selected. In our region, humidity factors into the part load, and in the cooling mode, humidity makes a difference.

Humidity adds to the amount of work an air conditioner or heat pump has to do to cool the air. Besides calculating the cooling load for homes, HVAC pros use software tools to evaluate the suitability of a system to manage the latent heat load, which describes heat plus humidity. The sensible heat load is the air temperature only.

Florida has a high latent heat load. When upgrading your HVAC system, insist that the HVAC contractor calculate the heating and cooling load using software called Manual J for sizing it and Manual S to make the best system selection for the unique attributes of this climate.

To learn more about heating and cooling loads, contact Rinaldi’s Energy Solutions, providing outstanding HVAC services for Orlando area homeowners since 1969.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about heating and cooling loads and other HVAC topics, download our free Home Comfort Resource guide.

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The air filter is a simple, yet vital component of the HVAC system. The filter protects the blower motor and evaporator coil from damage and poor performance caused by debris accumulation and mold development. For the best cooling results, the filter should be changed as the manufacturer suggests, installed correctly and remain dry. If you notice a wet air filter when changing yours out, it may actually signal a bigger problem with the air conditioner.

Wet Air Filter

Even in our humid Central Florida region, the air filter should always be dry. A wet air filter loses efficiency and restricts airflow across the blower. This can cause the blower motor to fail, which will put your air conditioner out of service until a major repair is performed. A wet filter also promotes mold development—a serious indoor air quality problem.

The following are common reasons why you may have a wet air filter:

• Location: Check to make sure the filter is installed in the right place. Filters are typically installed in a return duct slot preceding the air conditioner or behind each return grille.
• Leaky dehumidifier: If you have a whole-house dehumidifier attached to your HVAC system, check to see if it is leaking water on the filter.
• Condensation: As the home is cooled by the air conditioner, cool return air can cause condensation on metal ductwork around the filter. If this is the problem, the ducts should be insulated to inhibit condensation and reduce heat gain/loss.
• Condensate drain: The condensate drain removes condensate that drips from the evaporator coil. The drain is susceptible to blockages from mold, algae and debris that accompanies the dripping condensate. A clogged drain should be remedied immediately to prevent potential water damage in the home. Remove the cap to the access pipe and pour one cup of bleach into the drain. If this doesn't work, contact your HVAC professional.

For more information about dealing with a wet air filter or more substantial underlying HVAC problems, please contact Rinaldi's Energy Solutions today. We've been serving the Orlando area since 1969.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about wet air filters and other HVAC topics, download our free Home Comfort Resource guide.

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Efficient home cooling is an essential comfort element in the Central Florida region. When there's a problem with the A/C, you want it fixed immediately. One common problem with an A/C system is frozen evaporator coils. Keep reading to learn if you can troubleshoot this problem should it arise or if professional assistance is required.

Frozen Evaporator Coils

The evaporator is the component of the A/C system that pulls heat from warm return airflow to cool your home. To do this efficiently, the evaporator must have free contact with the return airflow. If there is an obstruction to airflow, the result may be ice accumulation on the evaporator, in addition to higher energy bills.

The following are common reasons for airflow obstructions and frozen evaporator coils:

• Filter - A clogged air filter impedes airflow into the return ducts and across the evaporator. If you use your A/C system as much as most Central Floridians, check it at least once a month and change or clean as needed.
• Dirt - Moisture in return airflow condenses on the cold evaporator. The condensation acts like a sponge for dirt and grime. When dirt buildup is too much, airflow contact with the evaporator is obstructed. The evaporator should be cleaned every year during professional preventive maintenance.
• Ducts - Air ducts convey the cooled air to your home. Unbalanced ducts create uneven air pressure in the home and in the return and supply ductwork. Duct problems could be the result of air leaks, disconnected seams and/or damaged ducts. One of the best things you can do is have your ducts professionally inspected.
• Refrigerant - If refrigerant is too low or if the compressor is malfunctioning, you're going to have a frozen evaporator. Low refrigerant also indicates a leak in the refrigerant system since it's a closed loop. Refrigerant and compressor problems must be handled by an EPA-certified HVAC technician.

If you need help with frozen evaporator coils in your Orlando area home, please contact Rinaldi's Energy Solutions.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about evaporator coils and other HVAC topics, download our free Home Comfort Resource guide.

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The latest advanced A/C systems deliver as much as 50 percent greater efficiency than older models and current models manufactured at minimum federal efficiency standards. If you want the best cooling and dehumidification performance from your new A/C installation, take a look at some of the available A/C features that can make it possible.

Variable-Speed Technology

Many advanced A/C systems incorporate variable-speed technologies that deliver smooth airflow, great dehumidification performance and lower energy bills. Variable-speed air handlers adjust cooling output in increments as precise as one percent to match real time cooling demand.

Electronic Expansion Valve

The expansion valve controls refrigerant flow into the evaporator coil. Electronic expansion valves (EEVs) are the most advanced expansion valves available, and they help advanced A/C systems achieve higher seasonal energy efficiency ratios (SEERs). SEERs indicate the expected energy efficiency of your new A/C system over the course of the cooling season.

Smart WiFi Controls

WiFi thermostats put more control in your hands. You can adjust indoor environmental conditions over a WiFi or cell phone connection using your smartphone, tablet or computer. Moreover, WiFi thermostats control compatible comfort systems, such as a whole-home dehumidifier and ventilation system.

Sum of the Parts

When you select the right A/C system with a combination of advanced A/C features, you'll enjoy the following benefits:

• Quiet operation: For quieter operation that won't disturb you or the neighbors, select an A/C system with variable-speed technology, including inverter-driven compressors and sound-proofing features in the outdoor cabinet.
• Efficiency: SEER indicates A/C efficiency. The higher the SEER, the lower your cooling bills.
• Comfort: EEVs, variable-speed air handlers and high-efficiency refrigerant are key features for removing maximum moisture from the air to help maintain a comfortable humidity level in your Orlando home.

Bonus Tip: Don't overlook the importance of working closely with reputable HVAC professionals. Your new A/C must be correctly sized and installed in order for you to take advantage of all it has to offer.

To learn more about the latest A/C features for your Orlando home, contact the experts at Rinaldi's Energy Solutions today.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about A/Cs and other HVAC topics, download our free Home Comfort Resource guide.

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The consequences of ignoring HVAC maintenance range from higher energy bills to preventable part failures. If your system breaks down in the summer, you’ll likely experience a high degree of discomfort, as well. Since HVAC systems include a variety of mechanical and electrical parts, neglecting to schedule professional service annually lays the groundwork for a disappointing performance.

Increased Energy Bills

When the airflow through both the air handler and the outdoor condenser slows because it’s blocked by a dirty filter or landscaping debris around the condenser, the conditioning process slows. This drives up energy usage.

Reduced Lifetime

Dust on the components makes them retain heat longer, which is particularly serious when it covers the blower motors and electrical components. When these parts run hotter, they wear out faster. Besides the buildup of dust and dirt, the lack of preventive maintenance causes smaller problems with the components that directly influence how the rest of the parts work together. Running your A/C with low refrigerant, for example, may even cause compressor failure—and that's the most expensive part to replace.

Safety Issues 

The consequences of ignoring HVAC maintenance can reduce system safety. HVAC equipment uses a good deal of energy, and when dust and corrosion build on its electrical components, they can heat up enough to start a fire. Another problem associated with inadequate professional maintenance is a cracked heat exchanger. This problem can occur in gas furnaces and emit deadly carbon monoxide into your home’s air.

Over time, the dust on the evaporator or condensing coil might create pinhole leaks that allow refrigerant to escape.

Decreased Comfort 

Even if the lack of service hasn’t reached the point of mechanical or safety problems, you’re likely to experience reduced comfort. Since it takes longer for the system to reach the thermostat’s settings, you’re spending more time—and money—too warm or cool your home.

The pros at Rinaldi’s Energy Solutions can help you avoid the consequences of ignoring HVAC maintenance. We’ve provided quality HVAC services for Orlando area homeowners since 1969.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about HVAC maintenance and other HVAC topics, download our free Home Comfort Resource guide.

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Before purchasing big ticket items like HVAC equipment or other home appliances, do your research. While you may be overwhelmed by the selection from a wide range of manufacturers and features, it's easier to compare products than you think. The EnergyGuide label can tell you everything you need to know, but only if you know how to read it.

Why Label It?

In 1992, the U.S. Environmental Protection Agency (EPA) established a program to help consumers save money and the environment through exceptional energy efficiency. The EnergyGuide label aims to educate buyers on how much energy an appliance uses and make it easy to compare models.

Using the EnergyGuide Label

This bright yellow label is prominently displayed on most major appliances and contains the following information:

• Key features: The key features of the appliance and similar models in the same cost range are found in the upper left corner.
• Product information: In the upper right corner, you'll find the manufacturer, model number and unit size of the product you're looking at.
• Cost information: Cost information is located in the middle of the label. It shows the estimated annual cost of operation, which is based on average use of the appliance and the national average cost of energy. Also found here is the cost range of similar models on a sliding scale. Labels on refrigerators and standalone freezers may vary. Those manufactured after January 1, 2014, have yellow letters on a black background compared to older models with black letters on a yellow background. Be sure to only compare similar labels as calculation methods are different.
• Energy information: Look to the bottom of the label for the annual estimated amount of energy usage based on typical use. Multiply this number by your local electricity rate for a more accurate estimate. If the Energy Star label is on the right, you'll know the appliance uses less energy than standard models.

For more information on how to interpret the EnergyGuide label, contact Rinaldi's Energy Solutions. We've provided quality service to Orlando area homeowners for over 45 years.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about EnergyGuide labels and other HVAC topics, download our free Home Comfort Resource guide.

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The development of the variable-speed air handler improves your options for cool comfort and energy efficiency. For decades, air conditioner and furnace air circulation was limited to on/off operation. When a system with this limited functionality cycles on, the blower delivers at 100 percent output. When it cycles off, the output is zero percent.

This back-and-forth alternation between extremes causes indoor temperatures to fluctuate as much as 10 degrees above or below the desired thermostat setting. It also reduces air quality, increases household humidity and adds lots of noise to the indoor environment. Choosing a variable-speed air handler for your A/C upgrade is a better idea for comfort and efficiency.

What Is ECM Technology?

Conventional on/off blowers utilize permanent split capacitor (PSC) motors that run at only one speed: full blast. Electronically commutated motor (ECM) technology incorporated in new air handlers runs across a wide range of speeds with substantially less energy consumption. In a typical installation, the controller is programmed to cycle on around 50 percent blower output. After a pre-set interval, the air handler ramps up gradually to full output to achieve the thermostat setting. Once the indoor temperature is stabilized, the programmer reduces blower speed to run continuously at very low output.

Why It’s Better

The advantages of upgrading to a variable-speed air handler are both comfort-enhancing and money-saving, such as the following.

• Temperature swings between on/off cycles are eliminated and indoor comfort is more consistent.
• Because air circulation through ductwork is almost continuous, air filtration isn't interrupted by on/off cycling, resulting in improved air quality.
• Lower output operation means quieter air circulation. Roars created by air blasting through the ducts are eliminated.
• Energy efficiency improves and operating costs are reduced. In the cooling mode, your conventional PSC blower consumes 500 watts or more of electricity. A variable-speed air handler with an ECM blower uses less than 100 watts.
• Humidity extraction, an important part of air conditioning here in Florida, functions more effectively at lower, continuous air volume.

For more information on the advantages of upgrading to a variable-speed air handler in Orlando, contact Rinaldi's Energy Solutions.

Our goal is to help educate our customers in Orlando, Florida and surrounding areas about energy and home comfort issues (specific to HVAC systems).  For more information about variable-speed air handlers and other HVAC topics, download our free Home Comfort Resource guide.

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