Archive for January, 2012

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Plainsboro HVAC Question: How Much Ventilation Do I Need for My House?

Monday, January 30th, 2012

By now you’ve probably heard how important it is to have good ventilation in your Plainsboro home. Especially if your home was built in the 1980s or early 1990s when ventilation issues were prevalent, you may not have enough clean air moving through your home. But, how much ventilation do you need? What is enough and if you don’t have it, how do you ensure your home is retrofitted properly?

How Much Ventilation?

Most recommendations for ventilation come from the Home Ventilation Institute, which provides a series of standards of measurement for builders and contractors retrofitting homes for better ventilation. Here are some of their recommendations and how they might apply for your home:

  • Bathroom – Small bathrooms (less than 100 sq. ft) need 1 CFM per square foot of bathroom. The number goes up for each fixture if you have a large bathroom.
  • Kitchens – Your kitchen range needs at least 100 CFM if against the wall and upwards of 150 CFM if on an island.
  • Ventilators – If you have an HRV for your home, you should have at least 100 CFM for 2,000 square feet and another 50 for every 1,000 square feet of home size being ventilated.
  • Home Ventilators – The actual volume of CFM for ventilators depends on the type of ventilator being used. For example, a whole house ventilator needs upwards of 6,000 CFM for a 2,000 square foot home. Attic ventilators need 1,400 or more.

So, what does this mean for your home? It means in general that you need a lot of ventilation and that the best way to get it is through mechanical ventilation techniques combined with your air handler and ductwork.

Especially if you recently added insulation and weather proofing to your Plainsboro home but have not yet updated your ventilation, you might have a major air quality problem, so have a professional measure your home’s air flow as soon as possible.

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Lawrenceville HVAC Guide: Important Indoor Air Quality Tips When Remodeling

Friday, January 27th, 2012

Remodeling your Lawrenceville home is a big step. As you plan the layout of your new bathroom or the size of the bedroom being added to the second floor, make sure you take into account the effects your changes will have on the indoor air quality of your home. Here are some specific things to keep in mind:

  • Water and Moisture – When you build on to or remodel your home, one of the most common problems is excess moisture. The grade may not be built to handle the extra space or you may find that moisture is harder to block from your home than expected. However, it’s vital that any additions are as water tight as the original construction. Mold and mildew, as well as dust mites and other humidity and moisture borne pollutants are major health concerns.
  • Ventilate Properly – Most people assume that the best thing they can do is close their home up tightly to block out pollutants. But, indoor air can be as much as 100 times more polluted than outside air if it isn’t properly ventilated. Stagnant, stale air filled with dust, pollen and dander among other things is not healthy, so extend your ventilation system to support your new addition.
  • Proper Flooring – The floor you choose when remodeling has a major impact on indoor air quality. You want to ensure any water that gets on the floor, especially in bathrooms can be removed without it penetrating to the wood underneath. Properly sealed tiles and fixtures are a must.
  • Unsafe Building Materials – Modern materials are generally safe, but if your home was built before 1978, consider the risk of flaking paint or old insulation before you start demolishing a room for remodeling. Lead paint in window frames and doors can be a major risk if it flakes and enters the air and asbestos can be found in insulation in walls, wiring and pipes.

Remodeling is a big step, and likely you have a lot of things on your mind, but don’t forget to include the air quality in your calculations, both during and after the construction. The EPA has a fantastic resource on indoor air quality in home remodels to help you determine what things you should watch for in each room of the house as you make changes.

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Rumson Heat Pump Tip: Outdoor Maintenance

Wednesday, January 25th, 2012

Sometimes, the trickiest part about owning a heat pump in Rumson is keeping the outdoor components maintained. Because they are outside and generally out of sight, it can be easy to forget or neglect them. But because they are outside and exposed to the elements, outdoor heat pump components need attention and maintenance to keep them running properly.

The two most important routine maintenance functions you can do as an owner of an outdoor heat pump are keeping it free of debris and keeping it level.

Every month or so, inspect and clean your outdoor heat pump to make sure it is free of leaves, dirt and other debris. These can easily be sucked in by the fan and reduce the efficiency of the whole system. Turn the power off to the unit and use a vacuum or broom to remove any accumulated debris.

Once or twice a year, use a carpenter’s level to make sure the whole thing is sitting level on the pad. Use the level to gauge both side to side and front to back. While you are doing this, check the insulation for erosion or gaps. If you see that it is not level or the insulation is wearing thin, have a contractor come out reset the unit on the concrete pad or patch up the insulation.

These are two small maintenance tasks that you don’t have to do very often, but they can make a big difference in the performance and life of your heat pump. In addition, you should always have your Rumson home’s heating, ventilation and cooling system inspected by a professional annually in order to keep everything maintained and in good repair.

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Point Pleasant Heating Installation Guide: Why AFUE Ratings Matter

Monday, January 23rd, 2012

When you are in the market for a new furnace for your Point Pleasant home, there are several reasons you should pay attention to the annual fuel utilization efficiency (AFUE) rating. All newer model furnaces get an AFUE percentage, which measures how much fuel a particular model converts into heat. Furnaces with higher AFUE ratings are more efficient, but the size and type of furnace will also factor into how much you’ll save on energy costs.

Understanding the AFUE Ratio

The minimum AFUE rating for new furnaces is 78%. This means that seventy-eight percent of the fuel is turned into heat, and the remaining percentage is lost either through poor insulation, air leaks, or the ventilation system in the home. Because there’s no heat loss through a chimney flue, some all-electric furnaces can have an AFUE rating as high as 98%. However, if the cost of electricity used to meet your normal heating needs is higher than the efficiency savings, you may want to consider other options. Talk to a qualified HVAC contractor for advice about the most cost-efficient heater for your home.

Furnace Efficiency Features

Furnaces manufactured 15-20 years ago have significantly lower AFUE ratings (between 55%-70% for most older models) because they are typically single-stage, or single-speed systems. Single-stage furnaces are less efficient because they are designed to cycle on at full capacity and shut off when the desired temperature is met.  Newer, two-speed models have a second setting that runs consistently at a lower speed, which saves energy by burning less fuel. Multispeed furnaces that have variable-speed blowers are the most efficient because they operate at various levels and automatically adjust to the thermostat to maintain a constant temperature.

If you look at the AFUE ratings for multispeed and variable-speed furnaces, the ratios should be above 80%. Keep in mind that this only determines the efficiency levels for the furnace itself. You’ll need to factor in whether or not your home has proper insulation and other upgrades, such as double-paned windows and doors.

Call Heritage Air & Heat to speak with one of our qualified HVAC technicians about a furnace upgrade for your Point Pleasant home.

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Spring Lake Heating Question: What is a Gas Furnace Draft Hood?

Friday, January 20th, 2012

As every Spring Lake HVAC contractor knows, a draft hood is a necessary part of any gas burning appliance. For a gas furnace in particular it ensures steady air flow to the burners to avoid flares or the pilot light being put out by fluctuation in temperature and air flow.

What the Draft Hood Does

The draft will change in the chimney as exhaust vents towards it – especially when going from cold air to hot. A draft hood is placed above the upper most part of the gas furnace to draw air into the chimney and makes it possible to draw more or less air through the chimney as necessary to create a constant flow.

This makes it possible for the burner to enjoy consistent air flow without any wind gusts or sudden temperature spikes or drops. Hot air, if not put through a draft hood would create a strong air flow through the burners.

A draft hood cools the air as it is released by the burners from 500 degrees F to between 300 degrees F and 350 degrees F. The cooling needs to be carefully calibrated to avoid condensation build up in the chimney however – a problem that occurs when the temperature gets too low.

Maintaining Pressure

The draft hood is a part of a larger system designed to maintain air flow to the chimney. For every cubic foot of gas burned, the furnace needs to have 15 cubic feet of air for combustion and another 15 cubic feet of air for dilution. A draft hood and the rest of the ventilation system make it possible to put a furnace that has many thousands of BTUs in the basement of your home and still supply it with enough air to burn gas and dilute the exhaust before it enters the chimney.

For all of these reasons, if you see your pilot light flickering irregularly, notice a backflow of exhaust or a burning smell in your furnace room, it’s important to call a professional who can inspect and repair the problem before it becomes any worse. Not only can gas burner exhaust contain high levels of carbon monoxide, it can be bad for the device and the chimney if it doesn’t vent properly.

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Wall Township HVAC Maintenance Guide: Basic Heating Safety

Wednesday, January 18th, 2012

While you should schedule a yearly maintenance visit with a qualified HVAC technician to check for any safety concerns, you can also reduce potential safety hazards in the heating system of your Wall Township home. Whether you have a furnace, heat pump, or boiler, you can substantially decrease the chances of dangerous situations with a few minor routine tasks.

If you have any questions about how to better maintain your heating system, give Heritage Air & Heat a call to speak with one of our expert HVAC technicians. Here are a few guidelines to get you started.

Ventilation in Forced-air Systems:

  • Regularly vacuum and clean out your heating vents and fan blower.
  • Check the condition of your chimney and vent pipe to make sure that none of the parts are damaged or show signs of deterioration.
  • Test the thermostat occasionally to make sure your heating system is working at optimal levels. There could be a safety concern if your heater is not properly heating your home.

Heat Exchangers:

  • Heat exchangers should be inspected often to prevent carbon monoxide leaks. Check for any obvious issues, such as rust or other damages.
  • The heat exchanger for furnaces should be inspected by a professional once a year in case there are hidden problems with the equipment, or if any of the components need to be replaced.
  • Check the pilot light in gas furnaces for any flickers or changes in color. Have someone turn up the thermostat while you watch the light, but turn off the system for five minutes first. If there are any changes, there could be a problem with the heat exchanger. Call a professional if you suspect issues with your heat exchanger.

Heating Equipment Inspections and Adjustments:

  • Boilers should be drained regularly to reduce sediment buildup, in addition to testing the water level safety controls. It’s best to have a professional perform these tasks if you aren’t sure how to do them on your own.
  • Adjust the temperature settings if you suspect that the heater isn’t working properly, and if it doesn’t work call a professional heating technician, or if you aren’t sure how to locate or adjust the controls.
  • Check the overall equipment for cracks, rust, or any other obvious signs of damage or deterioration that could create safety hazards.

In addition to performing these tasks, call a Wall Township heating contractor to inspect your heating system at least once a year.

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Happy Martin Luther King Day from Your Central New Jersey HVAC Contractor!

Monday, January 16th, 2012

Happy Martin Luther King Day! Many people consider this day a call to service, and there are so different many ways you can help your community, from lending a hand to a neighbor to donating food. Take a moment to think about how you make a difference in someone’s life today; even a small act of kindness can have a big effect. Help us make our community a better place!

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Fair Haven Heating Pointers: Signs of an Undersized Furnace

Friday, January 13th, 2012

If you’re purchasing a new furnace for your Fair Haven home, you want to avoid buying one that is undersized for your particular space. To do that, here are some common signs that the furnace isn’t powerful enough for the heating needs of your home. These signs might appear for an older furnace as well, especially as it ages and loses its ability to provide adequate heat for your home.

Maintaining Temperature

The most common (and in many cases only) sign that your furnace is undersized is that the device simply doesn’t maintain the temperature in your home properly. This means that when turned on to full and left for a few hours, your furnace doesn’t heat your home to the thermostat setting.

This can be due to an improper load calculation or a load calculation that wasn’t taken at all. The perfectly sized furnace will heat your home evenly on the coldest day your area is likely to have. So, undersizing should be pretty evident – if it doesn’t heat your home evenly and it’s not exceptionally cold outside, you might not have enough BTUs under the hood.

How to Fix the Problem

The problem is one that varies depending on the severity of the undersizing. Modern furnaces are often available with two stages, meaning they can operate at both a low BTU rating (often around 40K or so) and a higher BTU rating (70K or higher). This is the perfect solution for homeowners worried about undersizing because it ensures that your Fair Haven home always has enough heat in reserve should the weather get exceptionally cold.

For example, most furnaces are sized for extremely low temperatures, but if the temperature jumps up to 50 degrees F outside, your furnace is now oversized for that weather. A two stage furnace offers solutions for both common conditions and extreme conditions and will resolve most of the concern you have about undersizing and not having enough heat to offset outdoor temperatures.

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Tinton Falls Heating Guide: Pros and Cons of Various Heating Systems

Wednesday, January 11th, 2012

When it comes time to install a new heating system in your Tinton Falls home, there are a lot of options to consider. Many people get overwhelmed when confronted with all of the furnaces, boilers and heat pumps on the market these days. So, to help you get a handle on what each has to offer and which will offer you the best benefits, here is an overview of the modern heating system market.

Furnaces

Furnaces are the core of a forced air heating system and use gas, oil or electricity to heat air which is then circulated through your home by a blower in your air handler. Furnaces are among the most fuel efficient heating systems on the market today with options available at up to 95% AFUE (meaning it uses up to 95% of the fuel consumed to produce heat). They are also inexpensive to install and while they don’t last quite as long as boilers, they are highly efficient when well cared for.

Boilers

Boilers use gas, oil or electricity to heat water or steam which is then circulated through your home into radiators or baseboard heaters. The heated water or steam releases heat into your home and heats it in turn. While not quite as energy efficient as a high efficiency furnace, boiler heat is perfect for homes with existing radiators and no room for vents and ductwork. It also has less of an impact on indoor air quality since there is no air movement and boilers tend to last a very long time when well maintained.

Heat Pumps

Heat pumps are becoming increasingly popular, especially in milder climates where it rarely gets below 40 degrees F. A heat pump uses the same technology as an air conditioner to extract heat from outside using a compressor, evaporator coils, and condenser coils with refrigerant.

It is most efficient in the spring and fall when temperatures are mild, but it uses much less energy than either a boiler or furnace and it can be used in the summer to cool your Tinton Falls home. When properly maintained, a heat pump will last 10-20 years and save quite a bit of money, though it is recommended that you have an emergency heat source for days when the temperature outside gets below 40 degrees F.

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Spring Lake Heating Secret: How a Ceiling Fan Can Help Heat Your Home

Monday, January 9th, 2012

Most people in Spring Lake who have ceiling fans never turn them on in the winter. They assume that the fan is designed solely to cool the house – after all, blowing air feels pretty nice doesn’t it? But, a ceiling fan can actually help to move heat around your home and lower your heating bill if used properly. Here are some tips to do just that.

Rotating Warm Air

Warm air naturally rises. So, when you turn on your furnace and the blower fan pushes warm air through your ductwork into the various rooms of your home, the warm air immediately rises to the ceiling. So, for the room to feel as comfortable as you want it, you must wait for enough heat to circulate into the room to displace the cold air that was already there.

However, instead of waiting for warm air to fill the room, you can circulate the warm air as it arrives with a ceiling fan. By turning on your ceiling fan and changing the direction so it blows down (which most people already have it set to), the warm air will be pushed toward the floor, mixing it smoothly into the room and keeping you more comfortable without having the furnace on constantly.

This does two things. First, it keeps the room comfortable regardless of when the furnace cycles on or off. Second, it keeps the thermostat reading stable so the furnace doesn’t cycle on and off so quickly. If the warm air regularly rises up and the lower levels begin to cool, your furnace will frequently turn on and off as it tries to maintain the same temperature.

A Low Cost Addition to Your Home

Ceiling fans are inexpensive and aesthetically pleasing. They move air throughout the room, keep warmth low where you need it and can help reduce your energy bill in multiple ways. If you’re not sure whether a ceiling fan is right for you, talk to a Spring Lake technician about just how much money one of these simple devices can save you. I bet you’ll be convinced.

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