Property managers and business owners are challenged with reduced operating budgets while still being held to running their buildings efficiently and retaining tenants. Unfortunately, this often leads to delaying equipment upkeep. While deferred maintenance, such as repairs for rooftop package units (RTU), may seem like a solution to stay under budget, the truth is that doing so could cost more in the long run… Comprehensive preventive maintenance performed twice a year for an RTU serving a retail mall in Beaufort, S.C. would have paid for itself, along with a 50-plus-percent ROI over a 15-year life cycle.  The PM cost over seven years of RTU’s service life would have totaled $5,600. By deferring maintenance, assuming linear straight-line deterioration in performance, the added energy cost was $8,400 over seven years, and would have added up to $15,000 over 12 years. In addition, the rooftop unit’s life would have decreased by three years. The Consequences of Deferred Maintenance for Rooftop Units

Deferred HVAC maintenance on rooftop units can lead to higher energy and repair costs, system failure, equipment breakdown, and even potential health and safety issues. Over the first several years of service, a rooftop unit can experience up to 30% degradation in energy efficiency, without facility managers knowing that operating efficiency has decreased, as they still can cool adequately. rv ac units colemanWithout proper maintenance, there are component breakdowns, system failures, equipment damage/deterioration, RTUs shutting down and more occupant complaints. split system air conditioner fujitsu pricesEnergy savings from preventive maintenance are $50 to $100 per ton per year.4 ton ac unit kwh To save energy and increase efficiency, below is a list of the most important RTU maintenance tasks, with service performed at the beginning of the cooling season.

Routine maintenance should be performed before the cooling season starts and after the cooling season. It is well worth the investment to have an annual preventive maintenance contract with a company that focuses on PM work with highly-trained service technicians, such as commercial HVAC and mechanical contractor, Crockett Facilities Services, Inc. (CFSI). Our journeymen technicians develop customized PM lists based on years of experience to maximize performance and efficiency, and to extend equipment lifespan. We are dedicated to help building owners, property managers, and facility engineers to lower their operating expenses and energy costs through our preventive HVAC maintenance programs.Our PM contract customers receive priority service with 24/7 emergency service in Maryland, Virginia and Washington, DC. Like us on Facebook; follow us on LinkedIn, Twitter, and Google+. What Owners Need to Know About Rooftop-Unit Maintenance Tags: Deferred Maintenance, Rooftop Package Units This entry was posted on

Thursday, November 13th, 2014 at 12:49 pm and is filed under Blog, HVAC Systems Maintenance . You can follow any responses to this entry through the You can skip to the end and leave a response. Pinging is currently not allowed.The U.S. Department of Energy announced an agreement for new energy efficiency standards for commercial furnaces and rooftop air conditioners on Thursday. The federal government called the standards the largest in U.S. history for the amount of energy that will be saved: nearly 15 quadrillion BTU over the next 30 years. “They will save about the same amount of energy as all the coal burned in the U.S. to generate electricity in a year,” according to Rhea Suh, president of Natural Resources Defense Council. “These are very, very promising days in the global fight to slow, stop and reverse climate change.” Over the next three decades, the increased efficiency will cut 885 million metric tons of carbon dioxide, bringing the DOE more than two-thirds of the way to its goal of reducing carbon pollution by 3 billion metric tons.

Rooftop units cool about half the total commercial floor space in the U.S., according to the DOE. A typical owner would save about $5,000 to $10,000 over the lifetime of the equipment. But the actual savings are higher for an entire AC system, as a typical big-box store may have more than 20 units. Starting in 2018, rooftop AC will have to be about 13 percent more efficient than it is today. By 2023, it will have to be 25 percent to 30 percent more efficient than current models. Commercial furnaces will have to have thermal efficiencies of at least 81 percent for gas furnaces and 82 percent for oil furnaces by 2023. Although much of the cleantech industry’s attention was focused on the spending bill and the Investment Tax Credit extension for wind and solar last week, energy efficiency advocates were heralding this announcement. “DOE is ringing in the holiday season with truly monumental energy and economic savings," Andrew deLaski, executive director of the Appliance Standards Awareness Project, said in a statement.

With efficiency advocates and industry stakeholders at the negotiating table, the DOE also made changes to how the efficiency of rooftop units would be calculated. The standard will be based on the integrated energy efficiency ratio (IEER) metric, which captures the AC’s energy use over a range of operating conditions, according to NRDC. The test procedure will also take into account total fan use, which can be a considerable chunk of an air conditioner's total energy use. The push for standards started five years ago with DOE’s Rooftop Unit Challenge, which called on manufacturers to deliver more efficient systems -- up to 50 percent more efficient than current ASHRAE 90.1 standards -- at competitive prices. In 2012, Daikin's Rebel rooftop unit system was the first to meet challenge.  A year later, Carrier met the challenge. Now, five companies have units that meet the specifications. The standards will be finalized late in 2016, and little opposition is expected.Platinum 16 Gas/Electric System

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