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If you are considering purchasing a Heating, Ventilation and Air Conditioning (HVAC) system for your home or business, you want things to be done correctly. One of the most important considerations is the size of the equipment, and this depends on many factors. Geographical location is important, of course, but there are a number of other issues that need to be taken into account regarding the way you anticipate using your system in Manassas, VA.

Manual J Load Calculation

The only way to ensure that you get the system you need is by the completion of a Manual J Load Calculation. This is a highly sophisticated method for determining the appropriate size of your equipment. At one time, these calculations were done by hand and were quite laborious. As a result, most HVAC contractors did not perform them and used square footage as their primary rule of thumb for sizing equipment. The size of the structure is important, but there many other factors that have to be considered to ensure that you are getting what you need. 

Nowadays, these calculations are carried out by sophisticated computer software that essentially creates a digitized model of your home and then computes the result. In order to complete the assessment, your HVAC contractor will have to draw a very detailed plan of your house and include all of the requisite information. There are too many elements to name them all, but here are some of the most important ones: number of windows, window sizes and types, orientation of the structure, construction components, number of occupants, and so on. At Griffith Energy Services, we are fully trained to perform load calculations to ensure that you are getting exactly what you need.

Equipment Sizing

Most HVAC equipment operates at a single capacity and has no ability to alter output. This is disadvantageous if you live in a place that has a variance in conditions. If we design for the maximum or minimum possible temperatures, then we are certainly going to have equipment that is too large for much of the time since conditions are not always going to be extreme. In general, it is better to have equipment that is slightly too small rather than too large, particularly for cooling purposes. 

Fortunately, it is now possible to buy equipment that has the capacity to alter output in accordance with the demands. Mini-split systems such as those made my Mitsubishi are capable of operating in a wide range of capacities. Standard split-system central units are mostly available as single-stage equipment, but most manufacturers offer dual-stage models that operate at a high or low capacity depending on what is needed. This type of equipment will do a better job of providing comfort and reducing energy costs.

When it’s time for new HVAC you can count on the professionals at  Griffith Energy Services to answer all of your questions and provide expert advice about energy efficient heating and cooling.  With today’s technology, what’s good for the environment is also good for your pocketbook.  Griffith Energy Services will show you how to accomplish both.

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Dear Customers,

At this time, when the news is dominated by the Coronavirus (COVID-19) health emergency around the world, we wanted to personally reach out and let you know that we are vigilantly implementing enhanced protocols to ensure your safety and the safety of our team.

We are closely monitoring the guidance of the World Health Organization and the Centers for Disease Control regarding the spread of the virus. This is an evolving situation and we will continue to develop and take necessary measures as needed. Our focus is to ensure that we meet customer needs while doing our part to keep you, our employees, and our communities safe.

Here’s what we’re doing:

  • Everyone on our team has received enhanced training and protocol briefings. We will continue to evolve and adjust these protocols as needed.
  • We are implementing telecommuting options for positions where applicable.
  • Non-essential work travel is currently on hold for all employees.
  • We are conducting enhanced cleaning practices at our locations and are instructing employees to continually sanitize their work stations and vehicles.
  • We are also urging all employees to be vigilant about frequent hand washing.

Information for you:
If you have an existing service appointment, we look forward to seeing you and want to reassure you that we are doing everything we can to promote a safe and secure service experience.

During this challenging time, if you are experiencing symptoms related to the COVID-19 virus or have been exposed to it, in order to protect our team and all the customers we serve, we encourage you to please reschedule your service appointment, by calling us at 888-474-3391.

Your safety is our highest priority and we truly appreciate the trust that you place in our team and our company.

Best regards,
Griffith Energy Services
888-474-3391

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