Technical

Legionella, Your Customers, and ASHRAE 188P

Now is a good time for contractors — along with facility operators and engineering firms — to take a close look at ASHRAE’s pending Legionella standard. ASHRAE 188P, “Legionellosis: Risk Management for Building Water Systems,” could become a standard as early as July if the latest comments do not warrant another public review.


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Using Low-Grade Waste Steam to Power Absorption Chillers

Compared to Mechanical Chillers, They Can Substantially Reduce Operating Costs

Absorption chillers use heat, instead of mechanical energy, to provide cooling. The mechanical vapor compressor is replaced by a thermal compressor that consists of an absorber, a generator, a pump, and a throttling device.


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Chimney Fundamentals: The Science of Venting Flue Gases - Part 3

How to Keep Your Customers Safe as Well as Comfortable

Water is a byproduct of combustion. If the proper venting of flue gases is neglected — as is so often the case — water in the form of condensation triggers serious safety and comfort issues for our customers. As professionals, we must pay more attention to flue gas temperatures and the conditions of the flue during our service calls.


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Why Home Standby Generators Are Needed

An Automatic Backup Generator Is Reliable in the Face of Impossible-to-Predict Variable Weather Conditions

The home standby generator is designed to be reliable in the face of the impossible-to-predict variable weather conditions that often necessitate its use; yet, many homeowners do not utilize this appliance. These generators provide homeowners reliable backup power to keep them comfortable, safe, and secure during a power outage.


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A#1 Air Solves Air Conditioning Challenges for Gas Monkey Garage

Dallas HVAC, Electric, Plumbing, and Security Contractor Answers the Call

Gas Monkey Garage, owned and operated by Richard Rawlings and home to the Discovery Channel’s series Fast N Loud, has gone since conception without air conditioning. Rawlings contacted A#1 Air and requested air conditioning for Gas Monkey Garage, believing it to be a simple job. It turned out to be much more.


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Chimney Fundamentals: The Science of Venting Flue Gases - Part 2

How to Keep Your Customers Safe as Well as Comfortable

Gas appliances are divided into four venting categories based on vent operating pressure and whether they are condensing or non-condensing. Category I is negative pressure, non-condensing. Category II is negative pressure, condensing. Category III is positive pressure, non-condensing. Category IV is positive pressure, condensing.


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The HVAC Contractor’s Guide to Estimating Software

The Most Important Things to Consider to be Sure You’re Getting the Best Solution

One thing is certain in small- to mid-sized businesses today: the need for sales force automation is top of mind. Too many small- to mid-sized companies — HVAC contractors, specifically — are facing the challenge of implementing streamlined, sales-friendly software to aid customer relationships.


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2015 HARDI Fly-In

Highlights from HARDI's Congressional Fly-In in Washington, D.C. Post date: May 28, 2015.

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NEWSMakers: Clint Schreck

Clint Schreck, general manager, Columbus Worthington Air, Columbus, Ohio, discusses winning Angie’s List Super Service Award, how to handle online reviews, and much more.

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2015 National Plumbing & HVAC Estimator

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