Let's talk approximately 30-40% of your electricity bill. That's how much it costs the average homeowner or classified ad building owner to present proper heating, ventilating, and air-conditioning (HVAC). A good HVAC system is the key to maintaining a comfortable, healthy and interior environment. Through the years, I have been asked by many owners for a strategy to shorten their cost of moving picture and HVAC. They don't want to sacrifice the interior environmental conditions, but they complete want a point-by-point plan to follow. The engaging business that often happens is that moving picture bills are lowered substantially and the HVAC system be active is improved. This is a welcome be active of any mechanical engineer specializing in moving picture and HVAC.
The information on this page will back up homeowners, building owners and building operators create informed decisions approximately existing HVAC systems or cutting edge upgrades.
Operation and Maintenance
The first step to accomplish moving picture and HVAC system optimization is load reduction. This step normally consists of a long range plan which itemizes the actions to be taken based on best compensation on investment. Reducing your building load allows the existing HVAC system to be active more efficiently. If a other system or systems are creature considered, it will be more cost working to design for the abbreviated load as opposed to the existing load. A few common load tapering off strategies include:
Tighten the building shell and accumulate other insulation. addendum insulation in existing buildings may not be achievable in some instances, consequently more consideration should be aimed at the exterior shell, especially windows and doors.
Installing energy-efficient windows. This is a huge item on some buildings that yet have single pane windows. The installation of double pane windows with a thermal fracture is a good compensation on investment. create sure they are moving picture STAR attributed windows. Tinting or Low-E coatings will even be better.
Upgrading lighting systems. The average classified ad building has a lighting density of 2-3 watts per square foot which maintains proper lighting levels. This is a significant ration of the HVAC load and more or less any efforts in this meting out will lower the cooling requirement for the building. Accent lighting (sometimes called architectural lighting) are not always moving picture efficient and should not be considered if you want to shorten moving picture and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned spread than older incandescent technology. If you have a compensation let breathe plenum instead of compensation let breathe ductwork, consider spacious troffers consequently that some of the heat from the lights is returned to the HVAC system instead of going into the occupied area.
Selecting efficient equipment and electronic devices that have a talent stasher substitute will shorten the sensible heat gain in the space. Items to consider enlarge copy machines, kitchen equipment, computers and refrigerators.
Control airing by having your outside let breathe balanced. Most building owners have drawings of the native HVAC system installation. Have the drawings reviewed by a mechanical engineer to acknowledge your outside let breathe flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should yet be nimble to create recommendations for improvement.
Addressing these items is your first step to reducing moving picture and HVAC costs.
The second step to accomplish moving picture and HVAC system optimization is knowing your system. Your HVAC system is valuable to your interior environment, but it with represents a large component of your relief expenses. while it is greater than the scope of this article to discuss every system, a few recommendations can be addressed. every HVAC system component has increased in efficiency greater than the years. If your system is more than 13 years old, it's epoch to start planning for an revolutionize to other equipment. without difficulty maintained residential systems have a moving picture expectancy of approximately 15 years or consequently but seem to fail at the worse times. Have a replacement plan ready for the daylight your equipment fails.
Commercial systems vary, but if your building is using packaged equipment or split systems, the thesame lifetime can be expected. For larger classified ad systems and industrial applications, the HVAC system may be more perplexing and require an individual analysis by a mechanical engineer. As I said, HVAC systems adjust and no one-size-fits-all analysis works for larger systems. What every these systems have in common is they are normally fueled by electricity. Electricity cost money, consequently any efforts in the meting out of increased efficiency is a plus.
HVAC System Tips:
Find a attributed consultant you trust. If you are a house owner or little classified ad building owner, find a good HVAC company or mechanic to consider and preserve your system. If you are a large classified ad building owner, find a classified ad HVAC company for usual child support and a good mechanical engineer for specific guidance. I complete not recommend using a mechanical engineer employed by the HVAC Company; find a third party engineer for unbiased information.
Verify your HVAC system load. house owners should use ACCA's manual J calculation method and every others should have a load conducted by a mechanical engineer. classified ad buildings have more requirements similar to code conformance, minimum airing rates, etc and are individual to each building.
Load reduction-Read the information above.
Select equipment sized for your load. NEVER OVERSIZE! More-is-better does not apply for HVAC systems. It will cost more to buy the equipment as without difficulty as be active it. acquire the load and the equipment selection right the first time.
Purchase tall efficiency or moving picture Star equipment. Many of the other systems enlarge variable rapidity drives for fans and compressors. greater than the years of ownership this will be paid back up many epoch over. Compare welcome efficiency equipment to tall efficiency equipment in terms of initial cost and moving picture cycle costs. Any good HVAC company or mechanical engineer can gain this information.
Consider some form of moving picture recovery for any let breathe exhausted from the building and use it to condition the incoming spacious air. This is let breathe you have paid to condition, consequently extracting some of the moving picture past exhausting it should be a priority.
For large classified ad buildings, consider conditioning the outside let breathe with a dedicated outside let breathe unit. This will eliminate any problems similar to humidity rule in most instances. It will with growth occupant comfort and permit for other downsizing of equipment.
Commercial buildings should consider economizers on their equipment. Most current codes require economizers on equipment greater than 15 tons in size. Often genial at a low incremental cost, these units fascination in spacious let breathe from the outside with the temperature (sometimes humidity) outside is lower than the temperature inside.
Home owners and little classified ad building owners should install programmable thermostats. classified ad building owners should install a speak to Digital rule (DDC) system. The investment in either of these will pay back up more than the cost in a little amount of time. gate more below.
The third step to accomplish moving picture and HVAC system optimization is controlling your system.
Programmable Thermostats-The age of digital controls has made saving moving picture easy. One of the best investments for the homeowner or little classified ad building owner is a programmable thermostat. These are simple to use and incorporate strategies based on epoch scheduling. Most manufacturers present 7 daylight programs and setback/setup programs which will point of view the HVAC system on and off to compliment your schedule and desired indoor temperature. This is a good quirk to ensure HVAC systems are used lonesome with necessary.
DDC Systems-For the large classified ad building, I consider this as a must have system. Installation costs have steadily decreased and the be active reliability has steadily increased. They can be integrated into any system and expanded as required. Some of the more popular features of these systems are optimized start/stop of the HVAC system, multiple zone control, multiple temperature sensor locations and airing control. The best ration of these systems is their attainment to be scaled happening to the largest of classified ad applications. This means you can install a simple system and accumulate more controls cutting edge to incorporate your total HVAC system. Again, the payback is hasty and without difficulty worth the investment.
Operation and Maintenance
The fourth and last step to accomplish moving picture and HVAC system optimization is operation and maintenance. The most efficient HVAC systems are without difficulty maintained. Ensure reliability, efficiency and a long moving picture for your HVAC system by with these tips.
Find a attributed consultant you trust. If you are a house owner or little classified ad building owner, find a good HVAC company or mechanic to consider and preserve your system. If you are a large classified ad building owner, find a classified ad HVAC company for usual maintenance. create sure you cassette and document every servicing with dates, epoch and names of the servicing person.
Home owners should always acquire a seasonal song up. The operation of your system will adjust with the seasons of the year.
Replace your let breathe filters regularly. Don't use anything less subsequently a MERV 5 filter to assure dust and fibers are removed. clean filters will save fan energy.
Coil Cleaning-This is always a huge item overlooked by residential and classified ad building owners. Condenser coils total dirt and debris on their surfaces because they are outside. This makes the compressor be active harder and results in a cutting edge refrigerant temperature in your refrigeration system. Evaporator and heating coils total dust and fibers that spread inside your house or building. clean them at least with a year