Make Better Choices Thanks To This HVAC Advice
One of the most important things in a home can be its HVAC system, and it is vital that any homeowner understand how it works. If you would like good tips on how to maintain your HVAC system, then the following article is for you. Read on and learn and get beneficial information that can help you better understand your HVAC system.
Make sure you ask for an estimate in writing before choosing a specific HVAC vendor. There are a lot of moving pieces when it comes to purchasing these big items. You'll want to compare not only the cost of the equipment, but also the set up and the overall energy costs.
When seeking a new contractor, ask loved ones for referrals. They'll often have already had someone in for similar work and will know who to trust and who to avoid. If your family hasn't used anyone, ask co-workers or other people you trust in your community for some references.
Make sure the equipment you are buying is ENERGY STAR compliant. It may seem a small thing, but it isn't. Products that are ENERGY STAR compliant can save you a lot of money in energy costs over the year. It can be over $100 easily, sometimes a lot more.
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.
You should be sure to change the air filter of your HVAC system once every six months. Neglecting to do so can cause dust particles to clog the air ducts. In turn, your system will not work properly and you will find your bills going up. It's worth spending the time to clean the filters.
If your evaporator coil, found inside your home, becomes dirty, your unit will lose efficiency. Just pop off the front panel of the furnace and check to see that the coil is dry. Using a brush attachment on a vacuum, gently clean the coil of any dust or other debris.
Whenever possible, try to shade the compressor unit outside. The air that's in a place that is shaded is usually five to six degrees cooler than the surrounding air. Your air conditioning unit will be up to ten percent more efficient if it is properly shaded during the summer months.
Get an estimate before agreeing to have any work done on your HVAC unit. This will help keep you from being surprised by a bill at the end. Any reputable technician should be able to look at your unit, determine the problem and give you an estimate as to how much it will cost to fix it.
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!
Check for duct leaks if your unit seems to not be working efficiently. You can call a utility company in your area to help you with testing, and that doesn't cost much or nothing at all usually. When you repair the leaks, the tests will pay for themselves.
When dealing with HVAC contractors, make sure that you get everything in writing. While verbal contracts are legal in many places, it is usually very difficult to prove them. Having everything on paper is a great way to make sure that no ons is confused about any aspect of the process.
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.
Make sure your HVAC is clear when working outside. You should try keeping any vegetation about two feet away from your outdoor units. Keep the areas above it and on each side of it clear. Make sure you aim your grass clippings away from the unit when mowing. Keep leaves from getting inside your unit in the fall.
If you are thinking of installing a new roof and want it to also boost the efficiency of your HVAC, choose white materials. They reflect the sun's heat so that your attic doesn't get hot, and that means your air conditioner doesn't have to labor as hard to cool your home.
You can't know what sized air conditioner to purchase unless you measure the area you need cooled. Normally, you need 20 BTU for each click here square foot that you wish to cool. If you have multiple rooms to cool, be sure to add their square footage together.
Never accept the first offer you get when you are looking to hire an HVAC contractor. There are many people out there that charge more than others for doing the same services. Getting price quotes from several companies can help ensure that you are getting a rate that is acceptable.
Get bids from several companies before deciding who you are going to hire to install or repair your HVAC system. Most people know to avoid the company that has the highest quote, but you should also stay away from the one with the lowest. The price may be lower due to shoddy workmanship an/or using low-quality equipment.
Keep your evaporator coil clean. A dirty coil will cause the unit to strain when cooling air. You can clean the coil yourself easily. Simply remove the front panel to expose the coil and use a soft brush attached to a vacuum to remove any dust and debris that has accumulated on the coil.
As stated in the above article, it is very important to you and your home to have a properly running HVAC system. Without it functioning right, it can lead to a very expensive fix and a big headache for you. Don't let this happen to you! Use the tips here to make sure your HVAC system lasts as long as you own your home.
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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