HVAC Houston Commercial Air Conditioning
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Commercial HVAC Systems

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Houston Area Safety Council

  Serving the Greater Houston Area since 1977  

Commercial HVAC Systems

Our projects include commercial retail, office buildings, schools, hospitals, churches, and recreation centers. Mechanical HVAC Systems design, layout, and analysis. Modeling of energy use and air handling efficiency, including BAS building automation systems.

Typical commercial HVAC and climate control projects include forced air, VAV, air handling units, cooling towers, pumps, duct work , ventilation fans, and exhaust hoods.  We design, fabricate and assemble working HVAC systems and components such as hoods, compressors, condensers, evaporators, furnaces, heaters, registers, grilles,  and diffusers.

Electric air conditioning can take a big bite out of the energy budget of commercial and institutional building owners. Predictions are that new pricing mechanisms will lower off-peak and overall electric costs while threatening even higher summer on-peak rates. Since much of a building's cooling load occurs during on-peak periods, this is bad news for businesses with significant cooling needs.

Commercial Kitchen Exhaust Ventilation

Hoods, vent hoods, fume hoods, grease hoods, exhaust fans, hood
balancing, stainless backsplash, grease duct, Type1 and Type 2 hoods.

Request a quote  for new installations, replacements and service.  IAQ, indoor air quality, air filtration, filtration, design build, air conditioning service, second opinion, chiller service, chilled water, chilled water piping, hydronic, make up air, energy management systems, load calculation, heat pump, two stage, variable speed, VFD, humidity control, HEPA

Affiliations: CaptiveAire, Inc. commercial kitchen ventilation, Superior Products International II, Inc, (Supertherm, HPC, HSC, Rust Grip, Omega Fire), Lennox, Carrier , Trane, Goodman, Honeywell. Insulation manufacturers - Certainteed, Johns Manville, Owens Corning, Knauf

Strip Centers and Shopping Malls    

New natural gas air conditioning and refrigeration options are now available that can help owners and managers of office and apartment buildings, hospitals and other healthcare facilities, hotels, schools, retail establishments, and supermarkets manage their energy costs for commercial HVAC applications.

You may recognize a few of our Houston area clients on the commercial side:  Cafe Adobe, Los Tios, Skeeter's Mesquite Grill, TGF Haircutters, City Cuts, Hallmark Greeting Cards, Anthony & Sylvan Pools, Today's Vision, Post Oak Bank, Compass Bank, Langham Creek Bank, Ritz Camera, Quizno's, UPS/Maibox Etc., Capital 4 / Infinitel, Albert Luiz Salons, Wodhouse Day Spas, Massage Envy, 4 Leaf Towers, Villa Dí Este, 3 Men Movers and numerous recreation centers, shopping mall and retail strip center tenant operators.

Chilled Water Systems

Chilled water systems work much the same way as direct expansion systems work except they used chilled water in the coil rather than refrigerant (Technicially speaking, water can be classified as a refrigerant). Chilled Water systems can be rather complex and many chilled water systems are found in commercial and industrial applications.

A typical chiller uses the process of refrigeration to chill water in a chiller barrel. This water is pumped through chilled water piping throughout the building where it will pass through a coil. Air is passed over this coil and the heat exchange process takes place. The heat in the air is absorbed into the coils and then into the water. The water is pumped back to the chiller to have the heat removed and make the trip back through the building and the coils all over again.

The chiller basically removes heat from the water so that it may used as a refrigerant to remove heat from the building. Chillers range in size from smaller than 5 tons all the way up to several hundred tons.

Many chillers have cooling towers where the heat removed in the chiller barrel is transferred to another barrel. It is the condenser barrel where the refrigerant is condensed and sent back to the evaporator barrel to remove the heat. The process is in reverse in the condenser barrel. The water absorbs heat from the refirgerant and allows it to condense.

The water is then transferred to a cooling tower where the heat in this water is removed to the atmosphere. Once the heat is removed from the water it is pumped back to the chiller barrel to absorb more heat from the refrigerant. Some chillers do not have a condenser barrel to remove the heat. The refrigerant is pumped into a condenser coil where a fan blows across the coil and removes the heat. These chillers are cheaper to purchase upfront but not as efficient to run as those with the condenser barrels. The upfront costs are less but the energy costs are more over the long run. One bonus to an air cooled chiller is that it does not require a cooling tower and therefore the maintenace costs associated with maintaining a cooling tower.

Chilled water systems provide comfort to mainly commercial buildings and are typically cheaper to operate than DX systems. While many buildings have DX (direct expansion) systems in the way of large roof top units, the cost of installation is generally cheap for the DX systems because all that is required to install them is duct work and electrical service to the unit.

With chilled water systems, chilled water piping must be installed throughout the building and this can be far more expensive to install over the plain old DX roof top units which supply conditioned air to a VAV system that has electric reheat in them. Of course, adding state of the art controls like direct digital controls can improve any system and take energy management to a whole new level of control and savings. So whether your building utilizes chilled water or DX systems it will save energy dollars by adding a state of the control system like DDC or direct digital controls to make it work as efficiently as possible.

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