Rob "Doc" Falke http://contractingbusiness.com/taxonomy/term/23521/more en New Commercial HVAC Static Pressure Test Methods http://contractingbusiness.com/rob-doc-falke/new-commercial-hvac-static-pressure-test-methods <div class="node-body article-body">Static pressure measurement on commercial HVAC systems can vary significantly from one type of equipment to another. To remain savvy here's a look at the latest commercial air pressure testing techniques.</div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/new-commercial-hvac-static-pressure-test-methods" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/new-commercial-hvac-static-pressure-test-methods#comments Commercial HVAC Rob "Doc" Falke Wed, 03 Sep 2014 15:38:00 +0000 27291 at http://contractingbusiness.com Courtesy of the National Comfort Institute Is Real Efficiency from the HVAC Equipment or from the System? http://contractingbusiness.com/rob-doc-falke/real-efficiency-hvac-equipment-or-system <div class="node-body article-body">Ratings for HVAC equipment mean nothing unless the duct systems is performing well. Here is a look at how duct system upgrades are necessary to make equipment perform at promised energy efficiencies.</div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/real-efficiency-hvac-equipment-or-system" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/real-efficiency-hvac-equipment-or-system#comments Rob "Doc" Falke Residential HVAC Service Wed, 13 Aug 2014 15:42:00 +0000 26821 at http://contractingbusiness.com <p>Image is erroneously titled, &quot;AC Pipes.&quot;&nbsp; Photographer is <a data-close-and-redirect="true" data-search-link="Photographer" href="http://www.thinkstockphotos.com/search/2/image?artist=Roman+Milert&amp;family=creative" id="photographer">Roman Milert</a> and the photo is part of the Hemera Collection, ThinkStock images, item #101058978</p> HVAC Service: Quick Building Pressure Diagnostics http://contractingbusiness.com/rob-doc-falke/hvac-service-quick-building-pressure-diagnostics <div class="node-body article-body">Most buildings unintentionally operate under some level of positive or negative pressure. These pressures are usually caused by a defective duct system. Could a 5-minute building pressure test be the answer to your residential HVAC customers' comfort problems? </div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/hvac-service-quick-building-pressure-diagnostics" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/hvac-service-quick-building-pressure-diagnostics#comments Rob "Doc" Falke Residential HVAC Service Tue, 05 Aug 2014 19:19:00 +0000 26511 at http://contractingbusiness.com <p>A view of homes on July 17, 2014 in San Francisco, California. According to a report by <a href="http://www.dataquick.com/" target="_blank" title="DataQuick website">DataQuick</a>, the median price of new or existing single-family homes and condos reached $1 million. (<strong>Photo by Justin Sullivan/Getty Images</strong>)</p> For HVAC Service Technicians: Three-Phase Voltage Measurement Principles http://contractingbusiness.com/rob-doc-falke/hvac-service-technicians-three-phase-voltage-measurement-principles <div class="node-body article-body">In the last HotMail article, Doc described the steps required to measure single phase voltage. Many HVAC contractors and technicians wrote asking for a similar article detaining how to measure three-phase voltage. So here it is.</div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/hvac-service-technicians-three-phase-voltage-measurement-principles" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/hvac-service-technicians-three-phase-voltage-measurement-principles#comments Rob "Doc" Falke Residential HVAC Service Wed, 23 Jul 2014 22:06:00 +0000 26251 at http://contractingbusiness.com The Principals of Single-phase Voltage Measurement in HVAC Systems http://contractingbusiness.com/rob-doc-falke/principals-single-phase-voltage-measurement-hvac-systems <div class="node-body article-body">Correctly measuring and interpreting voltage is essential to every HVAC professional in the field. In an effort to help field techncial professionals be more accurate, here is a look at the procedures for measuring single-phase voltage.</div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/principals-single-phase-voltage-measurement-hvac-systems" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/principals-single-phase-voltage-measurement-hvac-systems#comments Rob "Doc" Falke IAQ & Ventilation Residential HVAC Service Mon, 14 Jul 2014 19:54:00 +0000 26061 at http://contractingbusiness.com <p>Air conditioning service technican checking voltage on a blower motor.</p> Photographer: spates / iStock / Item number: 493073979 For HVAC Systems, Efficiency Measurements Are The "Delta" Difference http://contractingbusiness.com/rob-doc-falke/hvac-systems-efficiency-measurements-are-delta-difference <div class="node-body article-body">When measuring the performance of an HVAC system, the term 'delta' is often used to express the difference between two measurements.</div> <div class="field-content-focus"> <span>Content Classification:&nbsp;</span> Curated </div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/hvac-systems-efficiency-measurements-are-delta-difference" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/hvac-systems-efficiency-measurements-are-delta-difference#comments Rob "Doc" Falke Residential HVAC Service Wed, 04 Jun 2014 14:34:00 +0000 25191 at http://contractingbusiness.com <p>There are many brands of test instruments to help measure Delta T, Delta P, and so on. Pictured here is the <a href="http://www.trutechtools.com/High-Temperature-small-flat-head-surface-probe-for-922-925_p_950.html" target="_blank" title="Testo Instruments"><strong>testo 925</strong></a> &mdash; a temperature measuring instrument particularly suitable for use in the field of HVAC (heating, ventilation, and air conditioning).</p> What Can You Do To Improve HVAC System Performance? http://contractingbusiness.com/rob-doc-falke/what-can-you-do-improve-hvac-system-performance <div class="node-body article-body"><p>One question I often hear from HVAC professionals is &quot;Doc, if there was just one thing I could do for each system to improve performance the most, what would it be?&quot; Let&#39;s take a look at the answer to that question as it pertains to your specific role in this industry.</p> <h3> <strong>Installers</strong></h3> <p>For installers, seeking just one thing you could do for every system you install, the answer would be: <em>Assure each return duct installed in an unconditioned space is completely sealed and that the proper duct insulation has no gaps</em>.</p></div> <div class="field-content-focus"> <span>Content Classification:&nbsp;</span> influencer </div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/what-can-you-do-improve-hvac-system-performance" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/what-can-you-do-improve-hvac-system-performance#comments Rob "Doc" Falke Residential HVAC Service Mon, 19 May 2014 15:20:00 +0000 25001 at http://contractingbusiness.com <p>Graphic courtesy of the <em><a href="https://www.energystar.gov/ia/partners/univ/images/Common_Household_Leaks600.jpg" target="_blank" title="EPA Website">EPA website</a></em>. Common household links that negatively impact comfort and efficiency. <em>&mdash; </em>From <em><strong><a href="http://contractingbusiness.com/last-word/home-performance-hvac-customer-service" target="_self">Home Performance as An HVAC Customer Service</a></strong></em>, by <a href="http://contractingbusiness.com/author/dominick-guarino" target="_self">Dominick Guarino</a></p> Heating and Cooling Equipment BTU Measurement Basics http://contractingbusiness.com/rob-doc-falke/heating-and-cooling-equipment-btu-measurement-basics <div class="node-body article-body">Since BTU measurements are necessary to verify the quality of a mechanical system installation, here are some basics on how to properly make those measuresments.</div> <div class="field-content-focus"> <span>Content Classification:&nbsp;</span> influencer </div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/heating-and-cooling-equipment-btu-measurement-basics" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/heating-and-cooling-equipment-btu-measurement-basics#comments Commercial HVAC Rob "Doc" Falke Residential HVAC Service Wed, 30 Apr 2014 12:44:00 +0000 24591 at http://contractingbusiness.com <p><strong><a href="http://www.aikencolon.com/e-instruments-mp200p-thermo-anemo-manometer" target="_blank">E Instruments MP200P MP 200 P </a>Thermo Anemometer Manometer </strong>can take measurements for CO, temperature, air velocity, pressure, voltage, and current.</p> Courtesy of E Instruments International How You Can Verify the Quality of Your HVAC System Installations? http://contractingbusiness.com/rob-doc-falke/how-you-can-verify-quality-your-hvac-system-installations <div class="node-body article-body">Quality is a good thing when it comes to the birth of an air conditioning and heating system. What elements of a quality HVAC installation can you verify for your customers?</div> <div class="field-content-focus"> <span>Content Classification:&nbsp;</span> influencer </div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/how-you-can-verify-quality-your-hvac-system-installations" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/how-you-can-verify-quality-your-hvac-system-installations#comments Rob "Doc" Falke Residential HVAC Wed, 16 Apr 2014 14:49:00 +0000 24431 at http://contractingbusiness.com Home Performance: Can HVAC Contractors Partner With Energy Raters? Why Yes They Can, and Should http://contractingbusiness.com/rob-doc-falke/home-performance-can-hvac-contractors-partner-energy-raters-why-yes-they-can-and-shoul <div class="node-body article-body">For many reasons, HVAC contractors generally believe that energy raters come up short when it comes to testing and diagnosting mechanical systems. Can these two groups ever work in harmony? Indeed they can.</div> <div class="field-content-focus"> <span>Content Classification:&nbsp;</span> influencer </div> <div class="og_rss_groups"></div><p><a href="http://contractingbusiness.com/rob-doc-falke/home-performance-can-hvac-contractors-partner-energy-raters-why-yes-they-can-and-shoul" target="_blank">read more</a></p> http://contractingbusiness.com/rob-doc-falke/home-performance-can-hvac-contractors-partner-energy-raters-why-yes-they-can-and-shoul#comments Rob "Doc" Falke Residential HVAC Service Tue, 01 Apr 2014 21:17:00 +0000 24061 at http://contractingbusiness.com <p>Recently, Rob Falke encountered a group of energy raters who stepped outside of their normal comfort zone and embraced the idea that the average HVAC system operates below 60% of rated capacity. They admitted that without measuring and rating the operating efficiency of HVAC systems, the typical home energy audit falls drastically short of revealing a home&rsquo;s true energy story.</p>