HVAC Tools

Getting the right HVAC tools and gauges is as important as having the right ingredients in cooking. Furthermore, utilizing the right tools is one big step in having the right system. Thus, it is advisable for HVAC practitioners, especially for beginners, to know what basic tools are currently used today.

One basic HVAC tool is the wrench. This device is used to tighten or loosen bolts (usually those with hex heads) and nuts. There are many kinds of wrenches: open-end, combination, adjustable open-end, flare nut. Most HVAC technicians prefer using the ratchet-type box wrench. They are excellent time savers as they immediately tighten or loosen around nuts and bolts.

For refrigeration and air-conditioning systems, however, they go for the flare nuts. One note for you, though.  The best ones are those that are made of alloy steel because they are tough.

You also check the shape of the opening, see if they can easily hold and release nuts and bolts, as well as the grip.

For HVAC systems, you also need a screwdriver. To allow it to endure twisting torque, choose a screwdriver with tempered tips. Good ones are also with steel shafts. In using this tool, you have to remember some few things. First, a screwdriver can never replace a chisel or a pry bar.

Select the most appropriate device needed at the moment. Second, it is necessary that you maintain the form of the screwdriver’s tip to avoid damage to the implement or injury to yourself.

Pliers are used to hold little objects or to bend or cut wires. Just like the other tools mentioned, there a variety of pliers available that come in different shapes and sizes.

The most ideal for pipe work is the locking-type pliers (Vise-Grips). These pliers have the most effective holding power. Tension degrees are also adjustable. Pliers should never replace wrenches.

Another classic HVAC tool is the hammer, specifically a duct hammer. This is used when installing ducts and air distribution systems. Generally, its face is square and has a chisel-like back. In selecting the right hammer, its handle should be made of steel, wood, or fiberglass. Otherwise, more-than-enough pressure will bend or even break it.

A hacksaw can cut piping materials but not with the ones used for piping circuits that carry refrigerants. Other valuable tools are drills, meters, and gauges.

You can go to your nearest hardware store or shop online when purchasing HVAC tools. There is an extensive list of HVAC tools manufacturers and sellers that offer the best buys and quality products. HVACtool.com carries the widest range of HVAC products from various manufacturers like Amprobe, Fieldpiece, Maglite, to name a few.

Yet technology is starting to play a key role in the development of HVAC tools. There are already software programs available like Elite and Design-Build 6.0 that can do accurate load calculations and duct sizing, among others, without using any more hand tools.

Furthermore, you can practically build your desired HVAC system from scratch, allowing you greater freedom to choose and identify other much-needed HVAC tools.

The truth is it is improbable and impossible to build something without anything to help you get by. In installing and even maintaining an effective and proper HVAC system, you need to have the right kinds of tools—that is, they are really useful in helping you implement your plan. And since they are the likely the same devices you’re going to use in the future, you need to take care of them.

They should always be cleaned and not utilized inappropriately. Handling them with care will not only make them long-lasting but, it will also protect you from injury or accidents.

HVAC Equipment

Global growth has been beneficial to the HVAC equipment industry. Even in the presence of regulatory measures such as the prohibition of CFCs in most countries and the rise of minimum efficiency requirement, findings still show that demand will increase to 5 percent every year onward as more and more facilities worldwide use HVAC systems.

In the United States alone, it is expected that sales will reach up to $24.3 billion in 2019 due to nonresidential construction and residential remodeling.

The most popular HVAC equipment used in homes and commercial and industrial buildings are heat pumps, chillers, and unitary and packaged terminal air conditioners. Heat pumps cause heat to move from a lower to a higher temperature reservoir through mechanical means.

Vortex tubes, phase-change heat pumps, gas-compression heat pumps, and geothermal-exchange heat pumps are some of the typical kinds.

Performance of heat pumps is best compared through their coefficient of performance (COP). This is the term used to explain the relationship between heat output and electrical power utilized. COP of most heat pumps are continuously rising, almost as high as 5.

Thus, they become a well-liked choice for home heating. Chillers are machines that chill water, which then cools and dehumidifies air. They require low electrical power and are typically powered by gas turbines. Steam is often used in absorption chillers. Reciprocating, screw-driven, and centrifugal chillers are the basic varieties. Unitary air conditioners are sold either as a single package or a split system. Units with high efficiency perform similarly with conventional efficiency air models but use less electricity.

Packaged terminal air conditioners, meanwhile, include outdoor louvers and heating availability, among others. They are usually mounted on the walls. Another well-liked equipment is fiber glass ducts.

These ducts can absorb nice unlike sheet metal air ducts.

These—as well as other HVAC equipment such as boilers or furnaces, exhaust fans, and coils—are available from different manufacturing companies found anywhere around the world. One of them is Lennox. Lennox air-conditioning systems are known for regulating and maintaining indoor air quality. They also distribute refrigeration systems globally. These are primarily used for the preservation of food in restaurants, supermarkets, and warehouses, among others.

Another would be Ruud. For over 100 years, they have been servicing residential and commercial facilities with quality HVAC products.

You can also purchase HVAC equipment online. Ebuild.com has one of the most extensive interactive catalogs of HVAC equipment for contractors, builders, and owners alike.

If you’re looking for air conditioners, for instance, you can actually browse among 340 products and choose your most desired unit through manufacturer and brand preference, nominal tons, refrigerant type, SEER, and energy star compliance. This refined-search method will produce results that will likely suit your style and your needs.

If you wish to purchase HVAC equipment from specific companies, you may refer to Apple Directory and to HVACportal.com. Apple Directory contains a comprehensive alphabetical listing of HVAC equipment and their corresponding manufacturer and seller in the United Kingdom. These are major U.K. firms that have proven track record when it comes to good-quality HVAC equipment.

HVACportal.com , meanwhile, is helpful when you have the definite equipment in mind since the site showcases companies and their main products. For example, if you want to buy a gas-fired boiler, fluid-to-fluid exchanger, or water heater, you may visit Aerco.com.

For cost-cutting measures, it is advisable that you procure an HVAC equipment without a middleman. Usually, most price quotations from contractors are already marked up to compensate with the other costs they incur in running the business.

The problem lies when you aren’t sure what equipment to buy, much more its specifications. You may then resort to bidding. Get the most competitive estimates from different contractors, choose the most ideal, and have them buy and install the equipment.

You can also contribute to environment preservation by selecting the most efficient HVAC equipment. They use lesser energy and decrease pollution due to onsite combustion. Furthermore, they last longer. There are limited air-conditioning systems available today that are CFC free. Thus, you prevent the continuous deterioration of our ozone layers.

HVAC Relays

An HVAC relay is a type of HVAC control system commonly used to monitor temperature, pressure, and humidity of large commercial and industrial facilities.

HVAC controls, such as in building automation system, are significant in the optimal start programs. When the program calls for a warm-up, the central air handling systems of the plant would start and operate with a recirculation air of 100 percent.

When it calls for a cool-down, the central air handling systems of the plant would start and operate with a return air of 100 percent.

An HVAC relay uses either one or perhaps more central controllers to regulate terminal unit controllers that are remote, communicating through an operator interface, usually one or more PCs. An HVAC relay is also often integrated with other systems such as smoke, fire, or light controls.

There are many types of HVAC relays available in the market. Temco Controls has actually three HVAC relays. Their MR3000 is a general-purpose mechanical relay and fits for both low voltage as well as excellent power switching.

To activate it, it needs only 10–12 VDC (voltage direct current) at 100ma (milliampere) for its low-power coil. Its double-pole, double-throw (DPDT) relay is estimated to be at 10A (ampere). Each relay consists of LED that indicates its voltage status. Its mechanical relay board is a slight modification of MR3000.

They are actually two types of it: 4- and 8-gang versions. Its features are very similar to that of an ordinary MR3000 mechanical relay in the sense that it still has a low-power coil and possesses LED lights for each relays.

Additional LEDs are used to monitor fuse loads. The mechanical board relay’s jumper can be set in two modes. It can be switched at 24 VAC on common ground, or you can use dry contact mode.

Temco Control’s SSR3000 features photo isolation of 4,000 volts and voltage turn-on, among others. It is a type of a solid-state relay. However, the word “relay” may be a misnomer as it isn’t a relay at all. It depends on electronics to do the actual switching. SSR3000 is known to provide solid-sate dependability for your HVAC systems.  For best performance, each relay is pretested before it is delivered.

Fujitsu Components America is one of the world’s leading manufacturers and distributors of electronic parts all throughout America. In 2004, it introduced and released into the market its newest type of HVAC relay called FTR-K3. It is a slim relay with a power of 20 amperes and an operating power of 780mW (milliwatts), the lowest of among its class. It has variety of uses, such as to switch compressor and inverter loads found in air conditioners and other appliances found in offices and in homes.

FTR-K3 is very durable and long-lasting, capable of 2 million operations (its mechanical life) or 100,000 operations (its electrical life) at its rated load.

Another leading company in the mechanical engineering industry is American Zettler. It boasts of being world’s no. 1 manufacturer and seller of HVAC relays. Its catalog or product list, which you can download, features over thirty kinds of relays for different purposes. Furthermore, each model has its own distinctive characteristic, allowing you to choose the best or the most appropriate for your need.

Omron has one of the best kinds of contactor relays. They consist of main contactors with an addition of contact blocks. Moreover, their components are finger proof and come in different sizes; definitely, you have almost infinite ways of possible configuration.

HVAC relays are sometimes manufactured as part of “power packs.” We can take, for example, Leviton’s occupancy sensors, which are the most highly developed, functioning sensors in the market. These sensors, along with its own built-in HVAC relays, can actually place all control connections in one central location.

Computers can also be used to control HVAC relay operations through an open- or closed-contact representation. This is because PCs use binary logic—either one or zero, yes or no, true or false—that is transformed into electrical signals and eventually into true-or-false digital signals.