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Faced with “Repair or Replace” Decision? Some Tips…

Posted by administr8tor on February 9, 2011   |   No Comments

Homeowners often face the decision of whether to repair or replace their furnace. Before making this important decision, answer the following questions:

  • Is your system in overall good condition? If so, it might be more cost- effective to repair it.
  • How long are you planning to live in your home? If you are moving within a couple of years, evaluate whether a new system will increase the value of your home. If the cost outweighs the investment value, consider repair. If you are planning on living in your home for many more years, consider the benefits of a more energy efficient system.
  • Have you addressed insulation and duct work? Proper insulation and seals can save up to 20 percent on your energy costs.
  • Are you using a programmable thermostat? A programmable thermostat can save up to 30 percent in energy costs.
  • Have you performed the Home Energy Yardstick? Use this tool to score your home’s energy efficiency.

Consider repairing if:

  • Your system is less than 15 years old.
  • The repair is under $500.
  • The overall condition of your system is good.
  • Your energy bills are reasonable and not concerning.
  • Your Home Energy Yardstick score is 5 or above.

Consider replacing if:

  • Your system is over 15 years old.
  • Your system needs frequent repairs.
  • Your Home Energy Yardstick score is less than 5. If the energy savings of a more efficient unit will cover all or part of your investment, consider replacing it.
  • Your utilities costs are constantly rising.
  • You are concerned about air quality. Consider replacement with an energy-efficient system that can reduce the potential for air contaminants like mold, bacteria, and dust.

A general rule of thumb that can be helpful in deciding whether to repair or replace your furnace is to add up your energy costs for the past winter and multiply by 20 percent. Divide that number into the cost of buying and installing. This is an estimate of how many years it will take to recoup your investment.

Of course, you can also count on T.F. O’Brien for expert advice on repairing vs. replacing your furnace. We can walk you through the options and help you make an educated decision. Call us if we can help.

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Choosing a Programmable Thermostat

Posted by administr8tor on January 19, 2011   |   No Comments

Programmable thermostats may be the most intelligent household devices you can purchase for your home. They pay dividends the first day you use them and features on newer devices go far beyond just temperature settings. Prices vary, but the choice to switch to programmable is not difficult once you know about the features and energy savings possible with these units.

So, what does a programmable thermostat do?

A programmable thermostat raises and lowers the temperature in your home all based on your energy requirements. For example, in the winter, we recommend you set your programmable thermostat on the low side after midnight because you’re in bed anyway.

Thermostats use different rules on different days so that the temperatures fit your daily activities. Here are three common programs:

7-day: You program each separate day of the week.
5+2 day: This has a Monday through Friday program , plus a weekend program.
5+1+1-day: Monday through Friday, plus separate Saturday and Sunday programs.

Lots of features are available in newer models, such as controls for humidifiers, dehumidifiers, ventilation systems, and the ability to set the thermostat remotely. You can get reminders for filter changes, your UV filters and just about any issue connected to your heating, cooling and humidification systems.

Carrier’s Infinity Control programmable thermostat, which we consider our best thermostat, can adjust temperatures in up to eight different zones. That makes it easy to save money by cutting back on heating and air conditioning in sections of your home that aren’t used as much or seem to naturally be warmer or cooler on their own. Bonus rooms built above a garage to serve as an office, but are hard to heat and cool, are perfect for this precise programming.

Of course, you want to choose a programmable thermostat that fits your system. The professionals at T.F. O’Brien are happy to discuss the options and offer expert advice. Call us if we can help.

T.F. O’Brien services the Long Island, New York area.

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

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Automatic & Programmable Thermostats

Posted by administr8tor on January 6, 2011   |   No Comments

Automatic Programmable Thermostats

In our modern, high-tech society, we don’t think much about some of the electronic gadgets in our homes. Take, for example, the ever-present thermostat–a staple of American households for decades. It usually takes the shape of an unassuming box on the wall, but that modest device controls the comfort of your family on the coldest day in January and the hottest day in July.

What Is a Thermostat?

It is a temperature-sensitive switch that controls a space conditioning unit or system, such as a furnace, air conditioner, or both. When the indoor temperature drops below or rises above the thermostat setting, the switch moves to the “on” position, and your furnace or air conditioner runs to warm or cool the house air to the setting you selected for your family’s comfort. A thermostat, in its simplest form, must be manually adjusted to change the indoor air temperature.

General Thermostat Operation

You can easily save energy in the winter by setting the thermostat to 68 degrees F (20 degrees C) when you’re at home and awake, and lowering it when you’re asleep or away.

This strategy is effective and inexpensive if you are willing to adjust the thermostat by hand and wake up in a chilly house. In the summer, you can follow the same strategy with central air conditioning, too, by keeping your house warmer than normal when you are away, and lowering the thermostat setting to 78 degrees F (26 degrees C) only when you are at home and need cooling. A common misconception associated with thermostats is that a furnace works harder than normal to warm the space back to a comfortable temperature after the thermostat has been set back, resulting in little or no savings. This misconception has been dispelled by years of research and numerous studies. The fuel required to reheat a building to a comfortable temperature is roughly equal to the fuel saved as the building drops to the lower temperature. You save fuel between the time that the temperature stabilizes at the lower level and the next time heat is needed. So, the longer your house remains at the lower temperature, the more energy you save.

Another misconception is that the higher you raise a thermostat, the more heat the furnace will put out, or that the house will warm up faster if the thermostat is raised higher. Furnaces put out the same amount of heat no matter how high the thermostat is set–the variable is how long it must stay on to reach the set temperature.

In the winter, significant savings can be obtained by manually or automatically reducing your thermostat’s temperature setting for as little as four hours per day. These savings can be attributed to a building’s heat loss in the winter, which depends greatly on the difference between the inside and outside temperatures. For example, if you set the temperature back on your thermostat for an entire night, your energy savings will be substantial. By turning your thermostat back 10 degrees to 15 degrees for 8 hours, you can save about 5% to 15% a year on your heating bill–a savings of as much as 1% for each degree if the setback period is eight hours long. The percentage of savings from setback is greater for buildings in milder climates than for those in more severe climates. In the summer, you can achieve similar savings by keeping the indoor temperature a bit higher when you’re away than you do when you’re at home.

But there is a certain amount of inconvenience that results from manually controlling the temperature on your thermostat. This includes waking up in a cooler than normal house in the winter and possibly forgetting to adjust the thermostat (during any season) when you leave the house or go to bed.

Thermostats with Automatic Temperature Adjustment

To maximize your energy savings without sacrificing comfort, you can install an automatic setback or programmable thermostat. They adjust the temperature setting for you. While you might forget to turn down the heat before you leave for work in the morning, a programmable thermostat won’t! By maintaining the highest or lowest required temperatures for four or five hours a day instead of 24 hours, a programmable thermostat can pay for itself in energy saved within four years.

Programmable thermostats have features with which you may be unfamiliar. The newest generation of residential thermostat technologies is based on microprocessors and thermistor sensors. Most of these programmable thermostats perform one or more of the following energy control functions:

-They store and repeat multiple daily settings, which you can manually override without affecting the rest of the daily or weekly program.

-They store six or more temperature settings a day.

-They adjust heating or air conditioning turn-on times as the outside temperature changes. Most programmable thermostats have liquid crystal temperature displays. Some have back-up battery packs that eliminate the need to reprogram the time or clock in case of a power failure. New programmable thermostats can be programmed to accommodate life style and control heating and cooling systems as needed.

A Note for Heat Pump Owners

When a heat pump is in its heating mode, setting back a conventional heat pump thermostat can cause the unit to operate inefficiently, thereby canceling out any savings achieved by lowering the temperature setting. Maintaining a moderate setting is the most cost-effective practice. Recently, however, some companies have begun selling specially designed setback thermostats for heat pumps, which make setting back the thermostat cost effective. In its cooling mode, the heat pump operates like an air conditioner; therefore, manually turning up the thermostat will save you money.

Types of Automatic and Programmable Thermostats

There are five basic types of automatic and programmable thermostats:
1.    electromechanical
2.    digital
3.    hybrid
4.    occupancy
5.    light sensing

Electromechanical (EM) thermostats, usually the easiest devices to operate, typically have manual controls such as movable tabs to set a rotary timer and sliding levers for night and day temperature settings. These thermostats work with most conventional heating and cooling systems, except heat pumps. EM controls have limited flexibility and can store only the same settings for each day, although at least one manufacturer has a model with separate settings for each day of the week. EM thermostats are best suited for people with regular schedules.

Digital thermostats are identified by their LED or LCD digital readout and data entry pads or buttons. They offer the widest range of features and flexibility, and digital thermostats can be used with most heating and cooling systems. They provide precise temperature control, and they permit custom scheduling. Programming some models can be fairly complicated; make sure you are comfortable with the functions and operation of the thermostat you choose. Remember– you won’t save energy if you don’t set the controls or you set them incorrectly. Hybrid systems combine the technology of digital controls with manual slides and knobs to simplify use and maintain flexibility. Hybrid models are available for most systems, including heat pumps.

Occupancy thermostats maintain the setback temperature until someone presses a button to call for heating or cooling. They do not rely on the time of day. The ensuing preset “comfort period” lasts from 30 minutes to 12 hours, depending on how you’ve set the thermostat. Then, the temperature returns to the setback level. These units offer the ultimate in simplicity, but lack flexibility. Occupancy thermostats are best suited for spaces that remain unoccupied for long periods of time.

Light sensing heat thermostats rely on the lighting level preset by the owner to activate heating systems. When lighting is reduced, a photocell inside the thermostat senses unoccupied conditions and allows space temperatures to fall 10? below the occupied temperature setting. When lighting levels increase to normal, temperatures automatically adjust to comfort conditions. These units do not require batteries or programming and reset themselves after power failures. Light sensing thermostats are designed primarily for stores and offices where occupancy determines lighting requirements, and therefore heating requirements.

By turning your thermostat back 10 to 15 degrees for 8 hours, you can save 5% to 15% a year on your heating bill – a savings of as much as 1% for each degree if the setback period is eight hours long.

Choosing a Programmable Thermostat

Because programmable thermostats are a relatively new technology, you should learn as much as you can before selecting a unit. When shopping for a thermostat, bring information with you about your current unit, including the brand and model number. Also, ask these questions before buying a thermostat:
•    Does the unit’s clock draw its power from the heating system’s low-voltage electrical control circuit instead of a battery? If so, is the clock disrupted when the furnace cycles on and off? Battery-operated back-up thermostats are preferred by many homeowners.
•    Is the thermostat compatible with the electrical wiring found in your current unit?
•    Are you able to install it yourself, or should you hire an electrician or a heating, ventilation, and air conditioning (HVAC) contractor?
•    How precise is the thermostat?
•    Are the programming instructions easy to understand and remember? Some thermostats have the instructions printed on the cover or inside the housing box. Otherwise, will you have to consult the instruction booklet every time you want to change the setback times? Most automatic and programmable thermostats completely replace existing units. These are preferred by many homeowners. However, some devices can be placed over existing thermostats and are mechanically controlled to permit automatic setbacks. These units are usually powered by batteries, which eliminates the need for electrical wiring. They tend to be easy to program, and because they run on batteries, the clocks do not lose time during power outages.

Before you buy a programmable thermostat, chart your weekly habits including wake up and departure times, return home times, and bedtimes, and the temperatures that are comfortable during those times. This will help you decide what type of thermostat will best serve your needs.

A programmable thermostat can pay for itself in energy saved within four years.

Other Considerations

The location of your thermostat can affect its performance and efficiency. Read the manufacturer’s installation instructions to prevent “ghost readings” or unnecessary furnace or air conditioner cycling. Place thermostats away from direct sunlight, drafts, doorways, skylights, and windows. Also make sure your thermostat is conveniently located for programming.

Some modern heating and cooling systems require special controls. Heat pumps are the most common and usually require special setback thermostats. These thermostats typically use special algorithms to minimize the use of backup electric resistance heat systems. Electric resistance systems, such as electric baseboard heating, also require thermostats capable of directly controlling 120 volt or 240 volt line-voltage circuits. Only a few companies manufacture line-voltage setback thermostats.

A Simpler Way to Control Your Environment

The best thermostat for you will depend on your life style and comfort level in varying house temperatures. While automatic and programmable thermostats save energy, a manual unit can be equally effective if you diligently regulate its setting–and if you don’t mind a chilly house on winter mornings. If you decide to choose an automatic thermostat, you can set it to raise the temperature before you wake up and spare you some discomfort. It will also perform consistently and dependably to keep your house at comfortable temperatures during the summer heat, as well.

Source List

•    The Energy Efficiency and Renewable Energy Clearinghouse (EREC) P.O. Box 3048 Merrifield, VA 22116 (800) 363-3732 Fax: (703) 893-0400
•    EREC provides free general and technical information to the public on the many topics and technologies pertaining to energy efficiency and renewable energy.

Reading List

•    ”Electronic Thermostats,” Radio-Electronics, June 1992.
•    ”Energy Saving Thermostats,” Consumer Reports, October 1993.” “Good News on the ‘Setback’ Front,” T. Wilson, Home Energy, Jan-Feb 1991. 2124 Kittredge Street, No. 95, Berkeley, CA 94704, (510) 524-5405. “Home Environment,” Home Mechanix, February 1992.
•    ”Home Q&A,” Home Mechanix, November 1995.
•    ”The Latest in Home Thermostats,” Consumers’ Research Magazine, February 1990.
•    ”New Electronic Thermostats Save Money,” Consumers Digest, January 1989.
•    ”Programmable Thermostats: How to Buy and Install One in Your Home,” Family Handyman, January 1989.
•    ”Smart Thermostats for Comfort and Conservation,” March 1994, EPRI Journal.
•    This document was produced from material from the Information Services Program, under the DOE Office of Energy Efficiency and Renewable Energy. The Energy Efficiency and Renewable Energy Clearinghouse (EREC) is operated by NCI Information Systems, Inc., for NREL/DOE. The statements contained herein are based on information known to EREC and NREL at the time of printing. No recommendation or endorsement of any product or service is implied if mentioned by EREC.

Source: U.S. Department of Energy

The Benefits of Zoning System Design

Posted by administr8tor on September 7, 2010   |   No Comments

An HVAC zoning system gives you the best possible climate control for your residence. Having a zoning system design is like having a different HVAC system in each part of your house, which comes in handy on Long Island, with the very cold winters and extremely hot summers. In addition to providing you with total comfort throughout the year, a zoning system design for your home also saves money.

Different areas of your home have different climate control needs that vary throughout the day, as the sun moves. By having a well-planned zoning system design, you can control the climate in each room of your home, much the same way as you control the lights.

A typical 2-story home with a basement is supplied by a single HVAC unit, with 1/3 of air conditioning going to each level, all of the time. Therefore each level consumes an equal 1/3 of your energy bills.

If that same home were to use zoning, only a small  percentage of the total daily energy consumption would go to each level: If the main level needs heat, then only it gets heat. If the basement is only used part of the day, then it only needs energy for that part of the day.

A programmable thermostat can control each zone of your home. So if the only time you are in the master bedroom is at night, you can set the thermostat to only heat the master bedroom at night, saving energy and therefore money. The programs can be reset or overridden at any time, depending on your schedule and need changes.

In addition, zoning reduces the number of times your HVAC system cycles on and off, saving money as well as prolonging the life of the system.

Overall, a zoning system design provides numerous benefits for homeowners, making it less expensive to operate than multiple systems, giving the ability to have temperature control in each zone, lower operating costs and using less power.

Zoning system designs do have some limitations, however. There are no small zones. In other words, you can’t heat a bedroom and its next-door bathroom separately. You need to have a 2-stage air conditioner as well as variable speed blower or air handler or furnace. One area of the home must be a “dump zone” that excess hot or cold air can be dumped in.

Depending on the size of the home and its exposure, 5 zones are often optimum, but it can be too much for a single system to handle. A professional HVAC system contractor can design the zoning system that best works for your needs, taking not only the system into account, but the accompanying ductwork and other factors as well, including humidity.

T.F. O’Brien services the Long Island, New York area.

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

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Simple Energy Saving Tips for Homeowners

Posted by administr8tor on August 17, 2010   |   No Comments

If you’re like every other homeowner in Long Island, you’re looking for ways to save on your energy bills.  With the cost of fuel skyrocketing, most people are willing to take measures to cut costs any way they can.  There are many simple ways to do this.  We’ll go over a few of them here.

According to www.energysavers.com, the typical American family spends about $2,000 yearly on home utility bills.  Unfortunately, up to 25% of the money spent on energy is wasted due to inefficient operation and maintenance of HVAC equipment, and/or equipment that is improperly installed or in need of replacement.

Homeowners can cut their energy costs by up to 25% by using these simple tips:

1.  Install a programmable thermostat to keep your house comfortably warm in the winter and comfortably cool in the summer.

2.  Use compact fluorescent light bulbs with the ENERGY STAR® label.

3.  Air dry dishes instead of using your dishwasher’s drying cycle.

4.  Turn off your computer and monitor when not in use.

5.  Plug home electronics, such as TVs and DVD players, into power strips.  Turn the power strips off when the equipment is not in use (TVs and DVDs in standby mode still use several watts of power).

6.  Lower the thermostat on your hot water heater to 120°F.

7.  Take short showers instead of baths.

8.  Wash only full loads of dishes and clothes.

Of course, keeping your HVAC equipment operating efficiently is critical to saving money on your energy bills, so knowing when to repair or replace your system will make a big difference in how much money you spend on utility bills.  Today’s energy-efficient models, when properly maintained and operated, can save the average homeowner 30% on their energy costs!

This is one reason why we feel strongly that all homeowners should have preventative maintenance done on their HVAC systems at least twice each year.  The cost of planned maintenance is usually offset by energy savings, because these “tune-ups” help prevent your system from wasting fuel and keep your equipment running smoothly and efficiently.

Contact us for more energy saving tips.  Our HVAC professionals will help you cut your costs while maintaining your home comfort.

T.F. O’Brien services the Long Island, New York area.

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

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How to Save Energy with a Programmable Thermostat

Posted by administr8tor on August 17, 2010   |   No Comments

Most gas- and oil-fueled central heating systems can be updated with a programmable thermostat that can help save energy and money.

One of the more common myths we run into is customers who think that turning down the heat will make it take longer to heat the house back up. But this simply isn’t so.  Using a programmable thermostat is an energy-efficient way to take the guesswork out of home comfort.

A programmable thermostat comes with preset programs designed to save energy for you. However, the preset design doesn’t work for every household. Luckily, programmable thermostats can be customized for programs that run daily or weekly.

For example, if you work out of the house the same hours that the kids are at school, set the program to turn off the HVAC system while out of the house. You can set it to switch back on in time for your return. Your weekend schedule is probably different from your weekday schedule, so set the weekend days according to when you’re normally home or away. Day and night also have different heating and cooling requirements.

During the winter, you can program the thermostat to turn down before bed and through the night and go back up in time to give you a warm morning.  Keeping the temperature to 68°F while you are awake can keep the house comfortable and setting it lower while you are asleep or away saves energy.

Don’t forget to switch the settings when the weather changes. For the warmer months, you can keep the house warmer while you are away, and setting the temperature to 78°F when you are around to enjoy the cool air.

If your routine changes, you can use the manual override option to switch off the preset or customizable program, without undoing the entire system.

According to www.energysavers.gov, by turning your thermostat back 10°–15° for 8 hours, you can save about 5 percent–15 percent a year on your heating bill—a savings of as much as 1 percent for each degree if the setback period is eight hours long.

While most HVAC systems can benefit from installing a programmable thermostat, they are not recommended for heat pump systems. A programmable thermostat only works like an air conditioner in cooling mode, so any energy savings done during warmer months are negated during the winter when the heat pump system will operate inefficiently if not used according to design.

We understand that each family has different heating and cooling needs and will work with you to find the programmable thermostat that works best with your existing HVAC system.

T.F. O’Brien services the Long Island, New York area.

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

Benefits of Programmable Thermostats

Posted by administr8tor on August 12, 2010   |   No Comments

Using a programmable thermostat in your home is an easy and effective way to you save energy, money, and help fight global warming.

Save Energy

A programmable thermostat allows you to set the times you use the heating or cooling system. The program comes with a preset schedule, which can be customized according to your family’s needs. A programmable thermostat can be set to store at least six or more temperature settings a day. This feature allows you save energy by not having the equipment running when you don’t need it, but still maintain a comfortable home environment.

To maximize your energy savings, consider your family’s schedule. If you work out of the home during the day, you don’t need the air conditioning or heating to go on when you’re not there. However, if you’re home on the weekends, then you can set the thermostat program to go on then. This is the perfect scenario for reaping the most benefits from a programmable thermostat.

Other times to consider when using a programmable thermostat are bedtime. You may want to program the thermostat to go off before bed in cold weather, but warm the area before rising in the morning.

A different schedule can be used each day, but the program can also be manually overridden if the schedule changes.

Save Money

The average household spends more than $2,200 a year on energy bills, much of which goes to heating and cooling. By properly installing and setting a programmable thermostat, homeowners can save nearly $200 off of those expensive bills. As a rule, experts will estimate that programmable thermostat saves in the neighborhood of 10 percent off energy bills, if used correctly.

Depending on the model, a programmable thermostat costs relatively little in the way of initial financial output. They run anywhere from $30 to $200, depending on the model and features offered. After only a year or two of usage, a programmable thermostat can pay for itself. In addition, homeowners in some areas may be eligible for rebates and incentives from utility companies and government agencies.

Consider a programmable thermostat with the ENERGY STAR® designation to maximize the benefits. ENERGY STAR® labeled products have been specially selected through a series of criteria to help maximize energy savings. Saving energy reduces greenhouse gas production created by energy production. In addition, programmable thermostats are eco-friendly because they don’t contain mercury, which is harmful to the environment.

T.F. O’Brien services the Long Island, New York area.

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

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About Programmable Thermostats

Posted by administr8tor on August 9, 2010   |   No Comments

Programmable thermostats are a geat example of HVAC technology that can save homeowners money on energy bills. By using a programmable thermostat, you can easily save money by regulating your home’s temperature, whether you are at home or not. Four settings make it easy to program the temperature of your home, whether it’s the hot summer or cold winter.

Programmable thermostats come with pre-programmed settings that are designed to help you save. If these settings don’t work for your family’s schedule, you can easily reset them to coincide with your climate control needs.

A programmable thermostat allows you to reduce the amount of heating and cooling on an as-needed basis. The flexibility of programming from a programmable thermostat means that you won’t be operating the machinery as frequently as with a standard thermostat. A programmable thermostat is able to store and repeat multiple daily settings (six or more temperature settings a day), and also offers the capability of a manual override that won’t interfere with the running of the rest of the daily or weekly programs.

Our experts can help you figure out whether or not the pre-programmed settings are right for your needs or whether you need a custom program. Because a programmable thermostat also needs to be safely and correctly installed, we can take care of that too, and help you choose a model that suits your needs and your budget.

Programmable thermostats are generally either digital, electromechanical or some hybrid of the two. A digital thermostat offers the most features and flexibility. Digital features include: multiple setback settings, overrides, and adjustments for daylight savings time. However, these diverse variations and settings may be too complex for some homeowners. Electromechanical thermostats don’t offer as many options, but are usually operated using pegs or sliding bars, making them somewhat easier to program.

If you’re not at home, you don’t need to heat or cool it as much as you do when the family is at home. You can also pre-set the settings for when you are asleep, and adjust them accordingly for when the family is awake. When you are making decisions about when to program your thermostat, consider your family’s habits. When do you go to bed? You probably won’t notice much going to bed in a cooler environment in the winter, so you can set the heat to a lower temperature before bedtime. Then you can also program the thermostat to heat up before you wake up. Also consider when the house is unoccupied during the day, and program the thermostat accordingly.

A programmable thermostat is a great way to save energy and money, while satisfying your family’s energy needs.

T.F. O’Brien services the Long Island, New York area.

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

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