Essential Things You Should Know About HVAC Approaches

The currently developed HVAC system and technology aim at reducing the initial costs and the long-run operating expenses as it improves the quality of air people receive indoors. Some people are not sure if they should install the system in their homes or they should hold on; here are some approaches and essential things you should know or expect from HVAC:

Low-Temperature Air Distribution

It is the newest approach design of HVAC system that is highly used in new buildings or primary renovations. Whereby it works by lowering the temperature of any chilled air that has been distributed throughout the building. The main advantage of this approach is that it reduces the actual acquisition costs and long-term expenses by reducing ‘churn’ costs.

How does it achieve this? If the chilled air gets distributed in a facility within a range of 46 to 48 F, less air will be required to cool the inner of the facility; thus, piping and ductwork can be smaller compared to conventional systems. The downsizing of air and water flow makes the fans and pumps smaller; remember, fans operate where spaces are occupied, however, since less air will be needed to reduce the cost of energy.

Demand-controlled Ventilation

It might be challenging and more expensive to ensure that air-change rates in interior spaces and the amount of fresh air getting into the area meet the American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE) standards. This is even tougher to achieve during summer as the warm and moist air has to be cooled and dried before releasing it or allowing its use in ventilation. The Demand-controlled Ventilation system enables various people to cut down such costs as refrigeration or dehumidification costs. It modulates the amount of outside air entering a building changing the level of occupancy and pollutants.

The system makes it easy to know the amount of exterior air that should be allowed into an interior space by refining the low-cost electronic monitoring devices used to measure carbon dioxide levels accurately.
The Demand-controlled Ventilation can be used with other systems that mix fresh air with the interior space air and those with separate ducting to supply fresh air. The primary benefit of this system is reducing the first costs.

Filtration Choices

The standards set by ASHRAE concerning improving interior space’s air quality are beneficial to the well-being of every person; however, they are affected by one major problem. These standards tend to assume that all the air entering a room is purely clean; however, on the grounds, there is a massive variation in outdoor air quality based on things like the time of the day and the building’s location. Moreover, it is challenging to predict the air quality, significantly that the location’s conditions might change to better, worse, or even over time.

The high unpredictability levels have made facility owners ask their engineers to use specific high-efficiency filters, with an 85 percent efficiency in densely populated places. Some owners are clever in instructing their engineers to create extra spaces into the building designs for the air-handling units to make it easier to add filters or high-efficiency filters later. This is essential when the outdoor air declines, for instance, where the owner aims to attract tenants with stringent air quality requirements. Failure to build such spaces might make it very expensive to install the efficiency filters later.

The costs needed to facilitate the creation of the extra spaces are small, and therefore the project manager can easily account for them if the environment might change in the future. For example, if the competition in the commercial rental market becomes high, the owner might attract prospective tenants to ensure high indoor air quality.

Sizing Systems for Real-World Demand

For a long time now, excellent HVAC contractors demanded that such systems and their components be made large enough to accommodate high needs and use. In most constructions, you will find that engineers tend to size parts based on books rather than the real world. This is as a result of little initial performance information they have to use in making calculations. In contrast, others have increased such sizing beyond what is required for accommodating peak load and protecting it against under capacity.

Such a kind of sizing leads to more extensive systems beyond how they are supposed to be. A sizing system designed to accommodate a condition that is not likely to occur is expensive for the following reasons: additional costs are needed to buy the extra equipment, and the equipment load performance becomes less efficient.

It might not be easy to determine the mistake where the air conditioning system is oversized. Some people might argue that if a facility has a specific quantity of heat-generating equipment, it can be built big enough to handle the load that might occur if it was all running at once. However, this should not be considered because it is almost impossible for the heat-generating equipment to run simultaneously.

Different buildings used for other purposes need a unique approach; for instance, in a typical office building, the lighting and equipment happen to be the most significant cooling loads components. If the lighting design is advanced, a standard open workspace will be reduced to 0.8 to 1.0 watts per square foot. Consequently, equipment may be challenging to estimate due to their diversity as the actual use pattern changes constantly, and peak loads rarely occur continuously within a facility.

Sometimes it can be hard to convince your contractors not to oversize the systems when designing a new building. However, choosing diverse systems from floor to floor and space to space can be effective as they match dynamic loads. And avoid oversizing. Using fan-powered mixing boxes that differentiate the central air as they keep ventilation with good air quality are the devices you should use to ensure efficiency.

In addition, such systems can be incorporated with low-temperature air providing extra air capacity with less premium actual costs. Variable air quantity systems are meant to deliver cold air when required; however, this can reset increased levels where there are average conditions. They are efficient and even cost less.

Underfloor Air Distribution

One of the HVAC design systems approaches stresses more on the ‘air side’; it is mainly considered a low-pressure underfloor air supply. This approach ensures that the cool air maintained at a minimum positive pressure is supplied via access-floor plenums and reaches the occupied spaces passing through the diffusers set on the floor tiles where it should rise towards the ceiling return vents. Passing via natural radiation process by getting rid of heat among other pollutants from the space while moving upwards.

The approach is accompanied by various benefits than the conventional methods used to deliver air; the benefits include easy personal control of comfort conditions, reduced energy consumptions, and IAQ improvement. However, the initial cost for setting up this approach is expensive; you will get its value in the long run, for you will spend less than you could expect.
There is a current trend ensuring that the underfloor air supply can be an immediate alternative for various buildings in the future. This has been evident where glass windows are developed to regulate solar transmission and heat rejection.

Today, the underfloor air distribution systems are limited to facilities interiors. Moreover, in glazed buildings, it has been essential to supplement the underfloor air distribution with conventional methods that can easily handle large temperature swings likely to occur during the day. New glass technologies can highly enhance efficiency in a building; however, this is likely to happen in the next decade. Their development will make it easier to heat and cool the room temperature.


Building owners can make the right decisions based on what they want to achieve for their interior spaces with all the available approaches. However, they should focus on choosing methods or alternatives that enable them to save cost and make sense to any person using the interior space.

Keeping Your HVAC System In Top Condition

Environmental Protection Agency estimates that Americans spend more than 90% of their life in indoor areas. It warns that poor air quality can lead to different types of respiratory and skin problems. Pollution levels in indoor areas can increase up to 100 times if the factors responsible for this pollution are not controlled in time. The quality of indoor air depends a lot on the proper functioning and maintenance of your HVAC system. If this device is not maintained well, you will face poor air quality problems in the rooms. Contact an HVAC contractor when you notice the symptom of a fault in your HVAC. Such symptoms indicate the HVAC requires repair or maintenance service.

The Proper Time For These Services

The correct proper time to service your HVAC unit is in spring and fall. It will increase the lifespan of the system. Some problems require immediate attention. Maintenance services can be carried out 1-2 times in a year depending on the type of HVAC system you have and the maintenance schedule recommended by its manufacturer. Take good care of your HVAC system to ensure a comfortable, safe and healthy place in your home. Timely maintenance and repair services are necessary to keep it working properly and smoothly.

Following Tips And Tricks Will Prolong The Lifespan Of An HVAC System

  • Do not allow dirt and debris to collect in your HVAC machine. Keep its surrounding areas clean to ensure free airflow.
    Improper installation is one reason an HVAC keeps giving frequent troubles. Avoid the wrong system settings. These steps will ensure your system keeps working smoothly whenever you operate it. It is a myth that a bigger AC is always better. Contact an experienced HVAC contractor who will measure your rooms and determine the right size and capacity of HVAC for your home.
  • The ideal HVAC temperature during summer should be 78 degrees, while it should be 68 degrees in winter. Learn about the problems HVAC owners face so you can identify the fault symptoms quickly.
  • Always call a professional HVAC technician to solve any major fault in this system.
    Do not supply water to the furnace humidifier during the hot weather conditions. You can set its humidity level between 30 and 40 percent during the winter season by regulating the water supply.
  • Keep the registers higher than 20% to avoid straining your HVAC device.
  • The batteries of the carbon monoxide detection system should be replaced at least once a year.
    Insufficient lubrication will lead to friction between moving parts, reducing their efficiency and damaging them. They will wear out faster. Lubricate your HVAC parts regularly to prevent unnecessary friction.
  • The condensate drain should be kept clean to prevent the growth of fungus, algae and harmful bacteria. It will prevent accumulation of dirt and debris in this line.

Professional Tips

Prepare a mixture of one cup bleach with three cups water. Pour this solution into the condensation drain line to keep it clean.Keep in mind that even after all necessary repair and maintenance services, the life expectancy of an HVAC system is not more than 15-20 years. If your HVAC device is nearing its end, you should consider buying a new setup rather than repair the old one.

The following tips will help you select the perfect new HVAC system.

  • Calculate the size and volume of the area that needs heating and cooling
  • Take into account the construction material, such as concrete, wood, tiles or others
  • Check how much shade your home receives
  • Determine the most comfortable indoor temperature
  • Keep your walls and ceilings properly insulated to reduce cooling and heating requirements
  • Count windows, doors and skylights
  • Check facing directions of windows and doors

An assessment of the above factors will help you buy an HVAC system that will operate efficiently throughout the year. This device is the respiratory setup for your home. Keep your heating and cooling systems at the right places. Keep them clean to ensure they work smoothly and do not give you any trouble. The air ducts connected to this system should be cleaned when they become dirty. Change the filters at least once in three months or earlier if they become dirty quickly due to heavy use of the system.

Dirty filters affect the working of the HVAC system in several ways.

  • Causing system failure
  • Dirt and debris, such as dust, pet hair, mold, rodent infestation and other things affect the HVAC’s efficiency
  • Energy wastage will lead to higher electricity bills
  • Ensure proper working of your HVAC by taking care of your heating AC and furnace systems

Take following steps to keep both systems working efficiently.


  • The flame of the furnace indicates the condition of the heating system. A crisp blue flare indicates the system is working properly, but if the shades are orange or yellow, you need the services of a furnace repair company to fix the problem.
  • Plug any leakage and fix the loose connection quickly before they cause safety or efficiency problems.
  • As the furnace ages, it can develop more faults, leading to frequent breakdowns. If it is 15-20 years old and the repair bill is expected more than 15% of a new furnace price, it is better to replace it.
  • An overworking furnace leads to higher energy bills. Contact a furnace repair company if you start seeing an increase in your energy bills.
  • An inefficient furnace will cool or warm the room unevenly.
  • An outdated system fails to distribute the heat evenly across the house.
  • Contact a professional HVAC contractor if you see any such problem.

Heating AC System

  • It can be difficult to repair the heating AC system, especially if the winter season has already started.
  • It can become an emergency if your heater breaks down suddenly. You will be forced to call for emergency HVAC repair service which will cost you higher.

Do not ignore these problems of your HVAC system.

  • You have to spend more than necessary on heating. Heating bills are proving costly to you.
  • You keep turning up the thermostat but the rooms never get warm enough.
  • When an air conditioner short cycles, it is not working as long as it should to complete the heating cycle. It will be wasting lots of energy in starting and stopping.
  • Check any flame discoloration and turn off your furnace when you notice any such issue. A good furnace flame looks blue. If not, it indicates rust or debris buildup inside the burner.
  • Call a professional HVAC technician at least two times a year to inspect your HVAC system. The technician will check all faults including the faults related to the motors and electrical supplies.