HVAC guide

Centralized Home Air Conditioning

September 29, 2015 by nvshen Leave a Comment

Central air conditioning and heating systems are taking over the old-fashioned window units. It is because central air has a vent that’s going to every room in the house, office, or building. A central air conditioning system offers several advantages over conventional air conditioning systems. Unquestionably, central air is among the most effective and good ways to flow cool air in the home.

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Central air conditioning and heating systems are overtaking the traditional window units. There are 2 heat exchanges in central air units: the condenser and evaporator. The evaporator coil is located indoors and the condenser coil is located outdoor. The evaporator coils add heating to the air conditioning system. AC evaporator soaks up heats from area that must be cool and add the heat into the ac units. The central air unit pumps warmed or cooled air through your house via a system of ducts. In comparison with older systems like fans and swamp coolers, central heating is more cost-effective and less invasive than older systems.

But the advantages don’t end there. The following are other advantages that central air conditioners have over window air conditioning systems.

Central air units operate considerably quieter than window units. Having a window unit there is considerable noise pollution if the machine is turning on / off in contrast to the central one.
Centralized air cons have enhanced appearance as window models stand out like sore thumbs. Unless you want your home to have a utilitarian look, central air conditioning is the finest option for appearance.

The system won’t use up any inside space and keeps your home looking modern and updated.
As opposed to central AC, window type air conditioners lack temperature sensors, making them run until turned off. Centralized one enables you to control and program certain times and temperature.

It can be feasible for specialized central air conditioners to function in a reversed cycle (aka – Heat Pump), to not only cool air, but in addition pump out hot air. The exact same system can heat and cool the property in one user-friendly unit.

Central air conditioners are used in both commercial and residential buildings to provide a building wide relief to hot summer weather. They make it easy to keep your electricity bill low and your living space cool. Though it may be expensive at first, but the investment is going to be worthy on the long run.

How Air Pollutants Affect Human Health

June 16, 2015 by nvshen Leave a Comment

“Everyone knows that outdoor air can be polluted. What many people don’t realize is that indoor air can be polluted too. This is what we often call air pollutants which comes from our appliances or sa by-product from any activity at home.”

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Where do air borne pollutants come from and how can we keep them under control? Read about some of the downsides that come along with air conditioned environments.

Air pollutants contain millions of contaminants that degrade the quality of air quality and can lead to dentrimental affects on human health. These contaminants can come to the conditioned space from outside or can be the product of some bacteria germinal activities inside the conditioned space itself. Here are some of the most common contaminants that are present in the air, where they come from, and how they can affect the occupant’s health and comfort.

Contaminants and their Sources

Here are some of the most common air pollutants, but this list is not exhaustive.
* Allergens can come from dust, cooking exhaust, smoking fumes, tobacco smoke, moulds, pets and many other sources. They cause skin, sinus and eye irritation.
* Bacteria and viruses can come from pets, moisture or accumulated water and human carriers.
* Carbon dioxide, carbon monoxide, oxides of nitrogen and sulphur dioxide are few of the most poisonous gases having sources in incomplete combustion of fuels, burning of rubber and evaporation of stored chemicals.
* Odoriferous chemicals are the product of inefficient cooking, decaying organic matter and burning or evaporation of chemicals.
* Formaldehyde and volatile organic compounds have their sources in construction materials,furniture polishes and cleaning products.

Air Quality Effects on Health and Comfort

All these contaminants affect the health of the occupants in short or long run. The intensity of the effect on all the types of contaminants will not be same but will vary, for example some of the contaminants will render the occupants allergic, some may make the individual sick, and some may just be an unpleasant but harmless odor. In the next section I’ll group contaminats into categories depending on the intensity of the effect.

Contaminants Causing Short Term Effects

A high concentration of a particular gas in the conditioned areas can be fatal or even cause death. These types of fatal contaminants are carbon monoxide, bacteria and biological contaminants. Carbon monoxide is a colorless and odorless gas which is product of incomplete combustion of fuel oils or due to malfunctioning of combustion appliances. Combustion appliances in the conditioned area could be ….

DIY or Hire a Professional for your HVAC Project

May 14, 2015 by nvshen

“As much as possible we want to save cost in our home maintenance especially on things that we think we can do on our own. This is usually true when it comes to home repairs and other maintenance services that we’d rather do instead of hiring a professional. However, we need to bear in mind that there are certain aspects that are better left with professionals. ”

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Your home’s heating, ventilation and air conditioning (HVAC) system is an important part of a functional home structure. Keeping your current HVAC system in good working order is a combination of regularly replacing filters and having it inspected and serviced once a year. Upgrading your current system or checking for inadequacies (like air leaks or a broken thermometer) is important as there are long-term benefits to a more efficient system such as reduced monthly energy costs. You might even realize that a better HVAC system helps to create a healthier home environment as well – important for family member suffering from allergies. Choosing whether to take on such repairs, upgrades or replacements yourself or to hire a professional can be confusing.

Consider factors such as your confidence in the task at hand, your budget, and your access to the appropriate tools and knowledge. If you crave a good project and don’t have a lot of money in your budget, you may be eager to tackle the latest HVAC project in your home on your own. You’ll certainly save some cash on not having to pay the labor for a contractor to perform the job. However, you may not truly have the skills, patience, time or even special equipment to do the job on your own properly. So how do you decide which route to take?

What you can handle yourself

There are some basic chores you can do to ensure proper operation of your cooling system:

Change or clean your electrostatic air filter every month or per manufacturer’s recommendations
Check thermostat and make sure it’s set at the most optimal seasonal setting
Lubricate moving parts
Remove debris, dirt, twigs, and leaves that may have fallen onto or into your outdoor condenser unit
Check plugs or blockages in the condensation drain
A monthly cleanliness check, especially during spring, late summer, and early fall will prevent heavy accumulations
Clean the fan blades and coils of your cooling unit, but always make sure the power is off first
Check the base pan for any debris

See more: http://porch.com/advice/diy-hire-professional-hvac-project/