Heating and Cooling

Whether your home or office is too cold or too hot, we offer the heating, cooling and HVAC services to get you back in your comfort zone, quickly and affordably. In environments where concise climate control is needed, we assure you of quality heating and air conditioning equipment that will let you go about your daily business seamlessly.


Heating and air conditioning is what we do best. And by best, we mean that we take our trade and craft seriously. We take into consideration all scientific laws and principles that govern efficient thermodynamics, and only work with the top brands in the market. 





A central heating system provides warmth to the whole interior of a building from one point to multiple rooms. Heat generation occurs in one place, such as a furnace room in a house or a mechanical room in a large building. The most common method of heat generation involves the combustion of fossil fuel in a furnace or boiler. The resultant heat then gets distributed by forced-air through ductwork, by water circulating through pipes, or by steam fed through pipes. Other common methods used by heating systems employ gas heaters, oil-fired systems, and natural-gas-fired central forced-air systems. Others include central-boiler systems, steam-heating systems fired by coal, oil or gas, and electrical heating systems, also known as resistive heating.


The starting point in carrying out a heat estimate for heating depends on the ambient and inside conditions specified. However, before taking up the heat load calculation, it is necessary to find fresh air requirements for each area in detail, as pressurization is also an important consideration.


In most buildings that we service, the design, installation, and control systems of these functions are integrated into one or more HVAC systems. For very small buildings, particularly residential homes, we normally size and select HVAC systems and equipment. For larger buildings, we constantly work with building services designers and engineers to analyze, design, and specify the HVAC systems needed.


Air Conditioning

An air conditioner (often referred to as AC or air con) is an appliance, or machine designed to change the air temperature and humidity within an area, used for cooling, as well as heating depending on the air properties at a given time. Air conditioning systems typically employs the refrigeration cycle but sometimes using evaporation, commonly for comfort cooling in homes and buildings.


Air conditioning uses the same principle as mentioned in refrigeration: when a liquid converts to a gas, it absorbs heat. Air conditioners exploit this feature by forcing special chemical compounds, or refrigerants to evaporate and condense in a closed system of coils. These refrigerants have properties that enable them to change at relatively low temperatures. Air conditioners also contain fans that move warm interior air over these cold, refrigerant-filled coils. Central air conditioners have a whole system of ducts designed to funnel air to and from these coils.


When hot air flows over the cold, low-pressure evaporator coils, the refrigerant inside absorbs heat as it changes from a liquid to a gaseous state. To keep cooling efficiently, the air conditioner converts the refrigerant gas back to a liquid again. To do that, a compressor puts the gas under high pressure, a process that creates unwanted heat. All the extra heat created by compressing the gas is then evacuated to the outdoors with the help of a second set of coils called condenser coils, and a second fan. As the gas cools, it changes back to a liquid, and the process starts all over again.



U.S. Mechanical Services is also guided by regulating and standards organizations such as HARDI (Heating, Airconditioning & Refrigeration Distributors International), and ASHRAE (American Society of Heating, Refrigerating and Air Conditioning Engineers), that have been established to support the industry and encourage high standards and achievement.