Great Advice About Hvac That Anyone Can Easily Follow
An HVAC system is a key component to any home, and if it goes bad on you then it can be a major problem. If you would like good tips on keep an HVAC in good working order, then the following article will do just that. Keep reading to get a quality HVAC education.
When your contractor comes to fix your unit or install a new one, he should walk around your home and investigate what's going on with your current set-up. They should be looking for how much insulation you have, where your windows are and what quality they are and more.
Be sure to get every quote or estimate in written form. You have no recourse on a verbal agreement, so a written contract is a must. This will allow you to follow up if something goes wrong or you don't get what you were promised, protecting you from shady contractors.
Find a place that is shaded for your compressor. When the unit sucks in cooler air, then less work is required to cool it further which in turn boosts the units efficiency.
Clean your outdoor condensers often. Falling leaves and wind or rain may cause debris to reduce the efficiency of your unit. It may even overheat, which can ruin your system.
If you have a window air conditioner, be sure to check and see if it has an Energy Saver button. If so, use it! This turns off the fan when the unit isn't actually cooling the air, which can save you as much as 30 kwh over the period of a month!
To save money on your HVAC system, turn the air conditioning down at night and let your home warm up a bit. To keep yourself cool, use a chilling water-filled pillow to cool down your head and your whole body as a result. This combined with a fan will keep you from overheating while saving on your utility bills.
Go to people that you know and ask for recommendations when it is time for you to hire an HVAC contractor. People usually love to boast about the wonderful work they have had done, so you should be given great leads to follow. This will also help you to avoid undesirable companies.
To know how large of an air conditioner you need, look for a calculator online. If you get a unit that is too large, it will cost a lot in energy costs. Check your manual to learn what it is rated by the manufacturer if you want accurate information.
If you have a window air conditioner, be sure to check and see if it has an Energy Saver button. If so, use it! This turns off the fan when the unit isn't actually cooling the air, which can save you as much as 30 kwh over the period of a month!
If you don't want to install ductwork in your home, consider a mini-split system instead. They work form the outside in, allowing your whole home to cool without a central air conditioner. This allows you to enjoy all of your indoor space in a cool, comfortable way all summer long.
If you want to seriously extend the life of your HVAC system, as well as cut down your overall power bill, install ceiling fans in commonly used warm season rooms. Energy-star certified ceiling fans can sometimes cut your HVAC use in half. However, you won't physically notice a difference in temperature.
Whether you have an air conditioner in a window or outside your home, be sure to keep it in the shade. The cooler the air around it, and the cooler the condenser itself, the easier a time it will have of keeping the air inside your home cool as well.
Never hire an HVAC contractor that does not hold a valid license from your state. There are people out there that will offer to do less expensive work since they have no license. While it may seem like a bargain, you will have lots of issues in the event that something goes wrong.
There is a lot to think about when you install an air conditioner unit. For example, a big unit won't remove humidity while a small unit won't cool enough. Placing it in the wrong place can make it less efficient, and not insulating your home adequately could render it almost useless.
In order to save money overnight, buy an air conditioner with a switch that sets it to be fan-only. This will push hot air outside and bring in cool air from near the ground. Turn this on just before bed so that you can cool the house as you sleep.
If you feel like you are spending too much money on your heating and cooling, there is a simple way to reduce this cost. Raise or lower the temperature depending on the season. A single degree in temperature change can equate to almost a nine percent savings in cooling and heating costs.
Make sure you wipe up any water that is close to the air intake of the vents of your HVAC system. Clean up any water that is standing around because water can cause mold to easily expand. Some water buildup is normal but if you're picking up water more than once every six months you might have a problem, so contact a HVAC technician.
Do not let the heat build up inside your home. Lighting, electronic devices and appliances are all common sources of heat inside the home. To prevent this excessive heat, do not put televisions or lamps close to your a/c's thermostat. These appliances make the a/c think that the house is hotter than it really is, causing the system to run longer than needed and wasting energy.
Determining the right HVAC service professional to provide repair or replacement work can be tough when a certain amount of know-how is lacking. To really ensure that the best approach is being taken, some advance research is essential. Hopefully the material presented above has fulfilled readers' needs for useful read more insights in this realm.
Can the AC filter in your home, office or local mall protect you from Covid-19?
When New York Governor Andrew Cuomo announced last week that malls in New York could not reopen until they installed high-efficiency particulate air filters capable of trapping the virus that causes Covid-19, Harvard environmental health researcher Joseph Gardner Allen was thrilled.
"I've been writing consistently since early February about how healthy buildings should be the first line of defense against the novel coronavirus," said Allen, who directs the Healthy Buildings program at the Harvard T.H. Chan School of Public Health.
"I'm really grateful that we have a leader in the country -- somewhere -- who was finally talking about healthy buildings, ventilation and filtration," Allen said. "That hasn't happened before. It just hasn't happened."
A push to action
Allen was one of 239 scientists who wrote an open letter to the World Health Organization, the US Centers for Disease Control and Prevention and other health agencies, asking for a change in their guidance to the public on how the novel coronavirus, or SARS-CoV-2, can spread.
Current guidance only focuses on "hand washing, maintaining social distancing, and droplet precautions," according to the letter, published Monday in the journal Clinical Infectious Diseases.
The health agencies are ignoring the tiny droplets of virus that sputter and spray from our mouths, become aerosolized and then float away into the air, the scientists said, as a likely means of transmission.
"They don't want to talk about airborne transmission because that is going to make people afraid," co-author Donald Milton, a professor of environmental health at the University of Maryland, told CNN in a prior interview.
"The best vaccine against fear is knowledge and empowering people to take care of themselves," Milton said. "Why wearing a mask is important is because it blocks the aerosols at their source, when it is easy to block them."
MERV ratings
In his edict to New York mall owners, Cuomo was talking about HEPA filters, which have the highest MERV ratings, between 17 and 20.
What's MERV? It stands for "minimum efficiency reporting value," and it's how filters are rated in their ability to trap tiny particles. The MERV ratings go from one to 20: Filters with higher MERV ratings are more effective than filters with lower ratings.
At the highest end, HEPA filters are used by hospitals to create sterile rooms for surgeries and to control infectious diseases, and are able to remove 99.97% of dust, pollen, mold, bacteria and other airborne particles with a size as small as 0.3 microns. For comparison, Covid-19 is thought to be between 0.06 to 1.4 microns.
"Filters are rated at their worst performance, so 99.97% is the worst it will do," Allen said. "And that's rated for a particle size of 0.3 microns, but smaller and larger it actually does better. So the point is that it's capturing nearly all particles."
Unfortunately, most businesses and home owners may find it difficult to retrofit their existing system to accommodate a HEPA filter, or any filter higher than the rating recommended by the system's manufacturer.
Doing so can actually impair the system's performance: Smaller pores in HEPA air filters make it more difficult for it to push air. Using denser filters can affect the efficiency of the unit and strain the fan, while decreasing indoor air quality -- the opposite of what you desire.
"HEPA filtration is not always going to be feasible or practical," Allen said. "But there are other filters that can do the job. What is recommended now by the standard setting body for HVAC is a MERV 13 filter."
High-efficiency filters in the 13-to-16 MERV range are often used in hospitals, nursing homes, research labs and other places where filtration is important.
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