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Best Manometers

Fieldpiece Dual-Port Manometer - SDMN5
Measures gas pressure, static pressure and pressure differential. 2 3/16-Inch tubes with brass fittings.Measure duct pressures to balance air flow.-60.0" WC to 60.0" WC range.
Reviews
"Highly recommend this meter for checking and setting gas pressures on gas furnaces, especially the dual fire type with High and Low fire rates."
"Great device,, easy to operate, easy to carry, easy to read."
"No more water even though I still keep my water tubes on the truck for back up."
"Nothing wrong with this brand as 90% of our field techs use this meter also...had to buy it.."
"Manometer works well for adjusting gas fired equipment."
"Works perfect. Solved my furnace issues quickley."
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PYLE Meters Digital Manometer - 11 Unit of Pressure Measurement Maximum 10 PSI Data Hold and Error Code Measure Gauge Differential Gas Tester - Large LCD Backlit Dual Display w/ Auto Power Off PDMM01
It has a large LCD backlit dual display, so it works great even in poor lighting conditions. 11 Selectable Units of Measure (in H2O, Psi, Mbar, Bar, kPa, inHg, mmHg, Ozin2, ftH2O, cmH2O, KgCm) Display Max, Min, Average, with Relative Time Large LCD Backlit Dual Display Zeroing, Offset, and Data Compensation Low Battery Display and Automatic Shutdown Data Hold and Error Code Accuracy: +/- 0.3% FSO (25º C) Repeatability: +/- 0.2% (Max +/- 0.5% FSO) Linearity/Hysteresis: +/- 0.29% FSO Maximum Pressure: 10 PSI Response Time: 0.5 Sec. If this item fails to meet your expectations we will accept it back a full refund within the first 30 days. It can measure in 11 different units, including in H2O, Psi, Mbar, Bar, kPa, inHg, mmHg, Ozin2, ftH2O, cmH2O, and KgCm. AUTO POWER OFF: It features automatic shutdown when device display low battery. LARGE LCD: It has a large LCD backlit dual display, so it works great even in poor lighting condition.
Reviews
"I am a HVAC service tech this manometer holds its own against 150$ fieldpeice and UEI manometers side bye side in the field I've compared all 3 for a year now my company owns the fieldpiece and came with my van after I purchased the Pyle meter the UEI was given to me bye and older tech that was moving on after I bought the Pyle also the Pyle is deff the flimsiest of the 3 and seems to search and flutter a little more than the other two but in the end recorded the same measurements as the other two and actually has way more units of measurements than the other two and is at least 100$ less than the UEI and the fieldpeice."
"i needed to purchase a reasonably priced meter to use only one time to test the draft on my harmon P-68 pellet stove."
"The problem is the manufacturer forgot to bore the hole thru the adapter so the gas could pass through it ."
"If you have a wood furnace like me I would highly recommend this."
"I noticed you need to be careful about not handling the plastic tubes, because that heats them up, and significantly affects the readings."
"My only issue is that since it is a dual meter I think it should have come with 2 barb fittings vice 1."
"Perfect for checking vacuum on home gas furnace controls."
"This meter continuously hunted and refused to give a steady reading."
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Manometer, RISEPRO Digital Air Pressure Meter and Differential Pressure Gauge HVAC Gas Pressure Tester
RISEPRO® Manometer is a professional instrument to measure gauge & differential pressure in the ranges of ±13.79 kPa / ±2 psi / ±55.4 H2O with accuracy of +/- 0.3% in full scale.
Reviews
"I purchased this to measure and adjust the draft on my oil burner, and it worked perfectly."
"Worked like a champ."
"Worked well."
"great tool now I know what my pressure switches are doing or not."
"Good product and good price."
"The item was as described and was received very quickly."
"Great price and does what I need using to set fire box pressure in pellet stoves and checking gas pressure in gas fireplace units."
"I am an hvac tech and this only reads up to 5 in hg."
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Best Indoor Air Quality Meters

Awair: Know What's in the Air You Breathe - Air Quality Monitor
Awair tracks the 5 key factors of air quality: Dust, Chemicals (VOCs), CO2, Humidity, and Temperature. You can use Awair’s preference modes to sleep better, control your allergies, increase productivity, or improve your general health. Based on decades of research, Awair gives you actionable insights and recommendations that are proven to improve your air quality. You’ll get an Awair score between 0 and 100 to help you quickly understand the quality of your indoor air. Awair’s award-winning design is meant to complement you and your environment, while equipping you with actionable insights and personalized solutions. After many frustrating months of research and trying a seemingly endless number of strategies, he realized that his baby girl’s suffering was closely linked to the quality of the air around her. Using his engineering background Ron decided to build a device that could track chemicals and toxins in the air. Whether you are a new parent, or you suffer from asthma, there are countless examples and testimonials of how Awair has positively impacted everyday lives. Enter your model number to make sure this fits.
Reviews
"Brief background: I am a physician living in a very polluted city, study the effects of industrial and traffic related air pollution since 1995, test different air purifiers, filters and air quality monitors, have PURCHASED most of my equipment from Amazon and publish some webpages about air pollution. I rated it as an Air Quality Monitor, not as an Environment Monitor, but it could work for both. It does not work as an Environment Monitor yet (it should) because the humidity data is not consistent with AQI and another humidity sensor, taking into account that AQI is outdoors and Awair is indoors . It takes into account humidity that comes with up to 17.3% error, CO2 that works well, VOCs with no units and PM that works well but you cannot compute a VOCs relative index with quantity values. If you change your wifi network, you must reset awair twice and must use bluetooth to find your awair again. 69 and 96 are not the same when talking about math ;). As AQI reports do not include VOCs, awair will help you TONS because they can represent important risks for your health and contrary to PM, they are very difficult to control; closing windows is not enough and most air purifiers are almost useless for VOCs. Anyway, if you take that into account, you can use them for your needs. As a whole, the awair is the best home air quality monitor, much more useful than air purifiers sensors, even more sensitive than the Winix 9500's VOCs sensor. OK, let's see: General reaction: there is a lag, sometimes 1 or 2 minutes. sensors: Dust (PM10) overreacts compared with my Dylos Pro. VOCs: excellent sensitivity. CO2: excellent sensitivity. Humidity: displays wrong values half of the time. Temperature: not very accurate. This is a great advantage to keep an eye on air quality for your kids'. rooms, shops, theaters, etc., You can also create a small air quality network for your home, business, city, country, etc Awair is not a scientific instrument, but certainly is very useful, reliable and easy to use. Awair Card: Their tips to improve air quality are superb. It does not really matter if you want to monitor air quality and for this purpose Awair is excellent. The red/green LED is functional but I still miss a yellow intermediate LED. I am also using another very interesting and portable device that you might consider, too: Air Mentor that looks beautiful, girls love it but it is completely different from awair's. Awair slogan “Get to know your air”is completely valid. Update: 2016/10/02. Awair now displays ppb for VOCs which is very useful to verify your air purifiers for VOCs. Awair is not a portable device but it is relatively easy to locate it over the air purifiers clean air outlets and check results. As you might have read, I am also using Air Mentor that is portable, am comparing both and prefer Awair. With Awair you can easily get an idea of what is wrong with your air. I recommend you have both, several awairs if you can afford them and one Air Mentor for portability. If you cannot afford both, go for Awair; otherwise you might end up blaming Air Mentor that is also a good device."
"I travel a lot and don’t need a special device to tell me that I feel depressed when I go to cloudy Moscow and happy when I land in Costa Rica. 3.When I bought a Jawbone for my husband, he said that he had never paid as much attention to his nutrition and activity level before he started wearing it. Over the weekend, I learned a lot about different plants which are easy to care for but are very beneficial for increasing the humidity level and fighting dangerous toxins. 3.When I changed the settings from “sleep” to “general”, without moving the device, the air score dropped 18% within 5 seconds. 4.I’d like to see the graphs beyond just one day, so I could compare my mood and health with different scores (for example, I feel tired, when the temp. 6.In the cards, when you suggest a solution to improve the air quality, it would be very useful to have hyperlinks to the Google search for these products, so I don’t have to type these strange names looking for information."
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