Feb 6, 2014 Heating
Gas furnaces come in a variety of sizes and can be used for different applications. By and large, the most common gas furnaces use natural gas and utilize electronic ignition. Electronic ignition gas furnaces are slowly replacing the older style standing pilot furnaces where a pilot light remained lit all the time.
Now, with the newer modern electronic ignition, gas furnaces only use gas when there is an actual call for heat. This adds efficiency because with the older standing pilot gas furnace the pilot remained on even in the summer months. While the heat produced by a standing pilot light is negligible, it is still added heat to the system in the summer when the whole purpose in the summer is to remove the heat from the system rather than add heat like a standing pilot would do.
A gas furnace is rated for efficiency by AFUE or Annual Fuel Utilization Efficiency rating. Furnaces installed before the nineties have efficiency ratings down to 60 percent efficient (or less in some cases). The AFUE ratings of gas furnaces is simply the amount of heat delivered by the gas furnace divided by the fuel used to make that heat.
Another way to look at AFUE is to measure the amount of heat lost up the exhaust stack. If the furnace delivers 90 percent of the heat produced into the dwelling then ten percent of the heat produced is lost up the stack. Even the highest AFUE rated furnace is going to lose heat up the stack.
It is nearly impossible to get 100 percent AFUE out of any gas or oil furnace simply because all oil and gas delivered to a furnace has a small amount of moisture in it. Gas typically has a moisture content of 4 to 5 percent. Oil depends on the quality of oil purchased, how many additives used in the oil, and the integrity of the oil tank and piping system. The end result of all this moisture and additives in the fuels effects the AFUE of the furnace and is the reason why no gas or oil furnace can achieve more than 96 percent efficiency.
The original is here: High Performance HVAC
Jan 31, 2014 Heating
No matter what sort of home you have you should consider the use of Commercial Biomass boilers. Energy efficiency is very important these days and Commercial Biomass boilers can help with this. Commercial Biomass boilers are easy to use and as long as you follow steps to ensure your own safety. It’s safe and simple as long as you are careful.
Commercial Biomass boilers are easy to use and are certainly an option you should consider if you are worried about the world and want to be more energy efficient. The first thing you need to do is consider how often you need to heat your home. The condition of your home and the environment you are in decides this for you.
Keeping your Commercial Biomass boilers regime regular is important if you own a home with no double glazing or you have a damp problem or live in a cold area. To avoid your home being cold and damp while you’re living there or while you’re away you should use Commercial Biomass boilers on a regular basis.
If you have a very cold environment then you should probably use Commercial Biomass boilers every day or at least once every two days. Keeping your home warm is important no matter how warm you may think it is. Just remember to be careful while you’re using Commercial Biomass boilers.
While you’re looking for Commercial Biomass boilers, the second thing you should think about is the type of Commercial Biomass boilers you’ll need.Commercial Biomass boilers are ideal for people with poor immune systems because they’ll ensure that you don’t get ill easily by using energy efficient fuel to keep you warm.
To ensure that you buy the right Commercial Biomass boilers for your needs you’ll need to do some research first. Make sure you know what you’re looking for. Commercial Biomass boilers are very cheap to run now. You can get very quiet Commercial Biomass boilers as well so that you won’t be irritated by it running.
Build up of damp and cold can cause major problems in the way of mould, spores and leaks so it’s essential that you keep your system heated. Commercial Biomass boilers are a great way to ensure your home is entirely heated and will definitely help a damp or mould problem.
Commercial Biomass boilers aren’t very obtrusive anymore either. They used to be large and take up a lot of space but these days they are small and easy to install. Installing Commercial Biomass boilers is easy these days. Usually all you have to do is get a technician to come and install it for you.
Using windows a lot will increase your chances of needing to use Commercial Biomass boilers because of a build up of cold and damp problems. Maintaining your Commercial Biomass boilers is pretty easy. Usually you just have to keep an eye on them which is a simple enough task.
Commercial Biomass boilers, in general, don’t have to be a horrible task. If you hire a safe and practical professional then it’s easy and fast. In order for Commercial Biomass boilers to work their best you should place them around your home in the attic or storage areas.
Commercial Biomass boilers can be very helpful for people with poor immune systems but they are also useful for people who want to be energy efficient. Many people decide to buy Commercial Biomass boilers because they are an essential part of their lives. They’re simple and easy though which makes them popular.
Jan 21, 2014 Heating
A Tankless water heater offers a homeowner many advantages over a conventional water heater. They are energy efficient, have a constant supply of hot water and also enjoy substantial space savings.
The tankless water heater offers builders several advantages also. You are able to up sell to a more expensive appliance, space savings and also selling of an energy-efficient appliance. Today they are installed in most zero energy homes. Also today, most custom homes are being built with a whirlpool system, high output showers, showers or tubs in other rooms, large capacity washers and dishwashers. All of these put a huge strain on a conventional water heater. Then there is a recovery period when even the biggest units run out of hot water.
A tankless water heater is fairly simple concept. Instead of a constant draw on resources to heat, maintain and reheat water in a large tank. The tankless water heaters will flash-heat the water as it is needed by running thru a heat exchange. When hot water is needed sensors will signal the burners to light and then heat the water. When the hot water is no longer needed the whole system just shuts down and there is no pilot light. This and the fact that there is no recovery period you can save 40 to 60 percent on your utilities bill.
A tankless water heater system is also compact and can be mounted to either a exterior or interior wall to save floor space. Because they are combustion sealed they can also be installed in the closet.
Tankless water heaters in the past few years have had a 20 to 30 percent sales increase per year. But they still only account for about 2 percent of the overall residential water heater market.
Part of this is the fact the some builders are jumping in the tankless water heater parade but yet others are holding back taking a more cautious approach. Also part of the increase is due to the customer’s are more knowledgeable and aware of the tankless water heater advantages.
While there are several good advantages to the tankless water heater, there are some drawbacks also.
The flow rate or capacity that a tankless water heater can supply is dependant on the heating element. The bigger the heating element is. The larger the capacity or flow rate will be. It is also affected by the difference between the water temperature and the temperature it needs to be heated. This is also known as rise.
If a tankless water heater needs to heat water from extremely hot, such as the case in the colder regions. It will have a lower flow rate. A standard shower temperature is 105 degrees. If the water needs to be heated from 65 degrees (which is common) to 105 it will do so much more efficient and with a greater flow then heating the water from 35 to 105 degrees.
Jan 20, 2014 Heating
Money flies out of the window if you have a door and window draft issue. You can lose almost 50% of your heating and cooling energy in a typical home. According to the American Council for the Energy Efficient Economy, some $13 billion of energy escapes from the collective drafty windows and doors of the American people.
Door and window draft problems occur when a house has settled and windows and doors no longer fit properly. Any type of gap, no matter how small, causes air infiltration. This results in drafts, which will impact the set temperature in your home.
How to fix a door and window draft? Many people use homemade blockers, which are great for keeping out the drafts. Homemade snakes and even unused blankets are often used but they are not as good as a purpose made draft blocker. For example, the material used in the most effective examples is polypropylene, which has been specially designed and tested to ensure that it blocks the flow of air. Also, the filler is important and finely ground corn has been found to be most effective. Make sure that the draft blocker is flexible so that it first well around the window and door for good effect.
To pinpoint door and window draft areas, feel the bottom of doors and around windows. You can also listen for a whistling sound, which is common around drafty windows. If you feel air leaking in, you need to take action to seal off the draft. Doors and window in older home are more likely to have problems with drafts, but there could also be concern in homes with new replacement windows if they were installed improperly.
Look everywhere for causes of the door and window draft, not just the typical first choices, the rear and front doors. Check your basement and attic doors and any sliders and in particular look at the porch and basement windows before any else.
Although door and window draft problems are year-round issues, they are most notable in the winter season when the cold air is coming in. In cold months, your home’s heating system is trying to maintain a constant temperature, but the drafts are making it a tough task. The heating system remains on constantly or may be turning itself on an off incessantly to try to compensate. A drain on your bank balance is sure to result.
Door and window drafts are most often felt in the winter, but represent a big problem in the summer too, most especially if you use air conditioning and fans. The system tries to cool the house but hot air flows in through door and windows which just makes the colling system work harder. More energy burned equals a higher dollar amount at month end.
Many are amazed to realize that a full 25% can be saved in energy costs when door and window draft areas care fixed. Draft blockers are easy to put in place. They can be installed without any fixings and can be cleaned and dried without a machine. Draft blockers are proven energy savers. Even if saturated, the draft blocker can be airdried and will maintain its shape and efficiency.