Archive for the ‘air quality’ Category

Heating and Cooling in Indianapolis

Wednesday, June 21st, 2017

Two months ago, my friend used heating and cooling in Indianapolis when their AC stopped cooling and they refilled the unit with Freon.  She called them and they we’re the most polite. Speaking with the receptionist alone convinced my friend in getting their unit finally repaired and maintained. They sent a tech that was more nicer then ever. The servicer knew what he was talking about when he saw my friend’s old unit. He had all the tools and skills for this job. Within a few minutes the servicer had diagnosed the problem and offered a solution. The servicer was very thorough and explained everything to my friend and the repair went as he said it would.  He also provided a free service cleaning of the unit.  It turned out it had a leak. (The servicer did warn my friend before replacing the Freon that the servicer couldn’t tell if it had a leak and if they added the Freon it might not work.)

There was a leak and because it happened so quickly the servicer replaced the freon free of charge and he said that he will try to repair the leak (& advised my friend to replace) even if is such an old unit (1990) and the leak somewhat large. Since my friend is not the homeowner she wasn’t gonna do that.  Their landlady ended up getting it repaired by heating and cooling in Indianapolis after a few days. They can fix things that honestly shouldn’t be fixed, since she didn’t want to replace the AC. It actually is still working, shockingly. I’m sure these guys would do well with any AC unit from this century.


I would definitely recommend calling heating and cooling for your AC repair needs. Great job guys. You guys deserve the five stars for sure.

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Soil Gas Testing

Thursday, September 3rd, 2015

As some of the others have said, these guys took a very scientific approach to the inspection.  Donald did our inspection and was very thorough and patient.  I peppered him with questions throughout the 3 hour process and he was knowledgeable and amenable to answering all my queries.

I like that these guys understood the science behind soil gas testing, VOCs, pollutants, and mold are well versed in scientific journal articles, in addition to the standard building construction knowledge.

how radon enters house

The air sample and mold sample reports that came back were very detailed and compared our sample against thousands of others that the lab analyzes every year.  I talked to quite a number of different air quality vendors and glad went to the best one.

Soil-gas sampling measures the gas contained in the interstitial spaces of the soil, as opposed to directly sampling the soil matrix, above the water table.

Active soil-gas collection methods (as opposed to passive soil-gas sampling) involve pulling a vapor sample from a temporary or permanent probe inserted in the soil into a collection or analytical device. Samples are then transported to a laboratory, or in some cases they are analyzed on site.

Exterior soil-gas sampling is a screening tool used to rapidly and cost-effectively identify and delineate certain volatile contaminants in the subsurface. It is often used to ascertain the source, extent, and movement of pollutants, but it is not a substitute for groundwater sampling.

Sub-slab soil-gas sampling, where samples are taken though holes in buildings concrete slabs, is used to determine the potential for vapor intrusion. In some cases sub-slab samples are taken to determine whether to test indoor air, while in others it is conducted concurrently with indoor-air sampling to evaluate whether the subsurface is the source of indoor contaminants.

There are several types of soil-gas sampling instruments, including:

á    The Vapor Pin® is a one-of-a-kind, patented, re-useable sub-slab soil gas sampling device designed for the environmental consulting community. Traditional sub-slab soil-gas sampling methods are time consuming, expensive, and prone to leaks. Cox-Colvin designed the Vapor Pin® specifically to eliminate many of the problems associated with traditional sub-slab soil-gas sampling methods.

Vapor Pin Vapor Pin

á      Air-tight syringe. This is used to pull vapors from the soil matrix. The syringe is used to withdraw a soil-gas sample from a probe and inject it directly into an analytical instrument for on-site analysis. Some regulatory agencies require that samples collected by this method be analyzed within a few hours.

soil gas testing soil gas testing

á      Tedlar¨ bag. This requires a pump to pull the vapors from the soil. Regulatory agencies may require that samples collected by this method be analyzed within 28 to 48 hours. Bagged samples can also be drawn into sorbent tubes, which in turn undergo laboratory analysis.

Tedlar Bag

á      Glass bulb (or tube). This has openings at each end, with one end having a valve where samples can be withdrawn with a syringe. The vapor sample is collected by connecting one end of the bulb to the probe and the other to a pump. The advantage of glass bulbs is that the glass is inert; also they are easy to use. The limitations of the glass bulbs are that they break easily and can leak contaminants through the valves. Sample holding times for glass bulbs are usually no more than 24 hours.


soil gas testing

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Air Duct Cleaning

Monday, May 18th, 2015

air duct cleaning Air duct cleaning can prevent health problems. Studies conclusively demonstrate that particle (e.g., dust) levels in homes increase because of dirty air ducts or go down after cleaning. This is because of the dirt that accumulates inside air ducts adheres to duct surfaces will eventually loosen and then will enter the living space. It is important to keep in mind that dirty air ducts are only one of many possible sources of particles that are present in homes. Pollutants that enter the home both from outdoors and indoor activities such as cooking, cleaning, smoking, or just moving around can also cause exposure to contaminants. Moreover, there is no evidence that a light amount of household dust or other particulate matter in air ducts poses any risk to health.

It is recommended that air ducts be cleaned as-needed basis because of the certainty about the benefits of duct cleaning. EPA does, however, recommend that if you have a fuel burning furnace, stove, or fireplace, they be inspected for proper functioning and serviced before each heating season to protect against carbon monoxide poisoning. Research also suggests that  Air Duct Cleaning Peoria AZ will improve the efficiency of heating and cooling systems. Cleaning dirty cooling coils, fans and heat exchangers can also improve or  increase your system’s efficiency.

There are methods for cleaning flexible ducts but they do take additional efforts to perform properly so do not expect it is always performed properly. Many times they are destroyed by people not knowing how to clean them.

The frequency of duct cleaning is dependent upon many different factors. The only effective way is to inspect them which you can easily do at the return register and supply points. The grill covers come off easily, usually screwed into the ceiling joists or sheetrock. These points are a good indicator of the rest of the ducts condition. Another point is at the evaporative cooler coil in the heater/air handler unit. If there has been a lot of dust and dirt in the system, filters not changed regularly, etc., then a lot of dust and dirt will collect on the coils. This could potentially indicate further duct inspection and cleaning. Your HVAC Tech should be checking the condition of the evaporative coil and will also see some of the duct work from that point. He/She can tell you if cleaning is warranted.

Cleaning the coils is pretty expensive because in most systems it requires taking the unit apart to get to the “inner workings”

We had one HVAC guy who came in an emergency situation when the overflow line became clogged and caused the pan to break and cause a big leak tell us that our system (because it was older) needed to have the coils cleaned for better efficiency and to prolong the line of the unit in addition to repairing the overflow pan and other stuff.

We had someone else come in to do the actual repair work and I was all prepared to have her (it was a female certified HVAC person with her own firm) do just that – clean the coils.

She told me that it was not necessary because the coils were not that dirty. That there was a part of the HVAC system in the attic that indicated if the coils were that dirty without having to open up the housing and remove the coils. That checking the dust in that area showed there was minimum accumulation so she did not think that tearing the unit apart which would take over an hour and cost quite a bit just to SEE the coils was warranted.

She also told me that the types of air ducts in our attic were the type that basically were declared faulty 20 yrs ago. They are more rigid than flexible and that trying to clean with would mean that they would likely shatter and have to be replaced. That as long as the material insulating them was holding together unless we wanted to replace the entire system, we should just leave well enough alone. The vents on that system are original, more than 25 yrs old. So when the HVAC needs to be replaced this time we are going to have to get new vent system as well as the compressor.

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Air Conditioning

Tuesday, November 9th, 2010

It’s the cold months again. Christmas season is here and everyone is looking to spend their time with their families in the warmth in their homes. It’s the season to be jolly as they say. It’s also a nice time to cuddle with a loved one. Of course it’s at this time that we would need our heaters to be on especially in those places where it’s just too cold. We would also like to have heat around the house as much as possible. If the house has a fireplace, it would be fun to be around it to bond with the family. But at bedtime, we would also like them to be comfortable in their sleep.

Professionals in heating and cooling systems like oregon air conditioning experts would help people design a system that would be perfect for the house or the building. They would make a system that would be able to provide heat to the whole house or provide sufficient cool air using an air conditioning system. The system would take care of the heat during the summer and provide heat during the winter. Some of the equipment can also take care of the quality of air. The small dust and air borne allergens are reduced leaving fresh air inside the house.

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Air Purifier

Friday, July 23rd, 2010

Our technology has really moved forward. There are lots of things that we enjoy now than before. The things we enjoy improve our lives and make it easier to do some of the things that used to be tiresome or difficult. But there are also things that contribute to pollution in the air. Although newer things have been developed that are environment friendly, there are already pollutants in the air that can be harmful to our health. It is more difficult for those who already have some kind of allergy like asthma. They are not able to enjoy too much when the air is too polluted. Even in the house there are allergens that can trigger this sickness. When this becomes a problem, it may be time to use an air purifier. Better quality air will be left after the dirt and impurities are caught in the purifier.

Air purifiers can clean the air at home or at the office. If you feel like it is seldom needed at home because it is kept clean, a portable air cleaner can be used instead. If there is some kind of odor or some part of the house got a bit dirty and the air needs to be cleaned, portable air cleaners can be brought there to clean the air. It’s only used when needed. If air purifiers disturb you, there are purifiers that are quiet. A quiet air purifier will hardly be noticed when sleeping or when in the study.

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