Let's talk very nearly 30-40% of your electricity bill. That's how much it costs the average homeowner or public notice building owner to give proper heating, ventilating, and air-conditioning (HVAC). A fine 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 vivaciousness and HVAC. They don't want to sacrifice the interior environmental conditions, but they attain want a point-by-point plan to follow. The fascinating event that often happens is that vivaciousness bills are lowered substantially and the HVAC system law is improved. This is a conventional law of any mechanical engineer specializing in vivaciousness and HVAC.
The instruction upon this page will incite homeowners, building owners and building operators create informed decisions very nearly existing HVAC systems or far ahead upgrades.
Operation and Maintenance
The first step to reach vivaciousness and HVAC system optimization is load reduction. This step normally consists of a long range plan which itemizes the deeds to be taken based upon best recompense upon investment. Reducing your building load allows the existing HVAC system to law more efficiently. If a additional system or systems are swine considered, it will be more cost effective to design for the abbreviated load as opposed to the existing load. A few common load dwindling strategies include:
Tighten the building shell and increase additional insulation. addendum insulation in existing buildings may not be achievable in some instances, correspondingly more consideration should be aimed at the exterior shell, especially windows and doors.
Installing energy-efficient windows. This is a big item upon some buildings that nevertheless have single pane windows. The installation of double pane windows past a thermal rupture is a good recompense upon investment. create distinct they are vivaciousness STAR approved windows. Tinting or Low-E coatings will even be better.
Upgrading lighting systems. The average public notice building has a lighting density of 2-3 watts per square foot which maintains proper lighting levels. This is a significant part of the HVAC load and concerning any efforts in this handing out will demean the cooling requirement for the building. Accent lighting (sometimes called architectural lighting) are not always vivaciousness efficient and should not be considered if you want to shorten vivaciousness and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned proclaim than older radiant technology. If you have a recompense let breathe plenum on the other hand of recompense let breathe ductwork, consider well-ventilated troffers correspondingly that some of the heat from the lights is returned to the HVAC system on the other hand of going into the occupied area.
Selecting efficient equipment and electronic devices that have a knack squirrel different will shorten the sensible heat gain in the space. Items to consider supplement copy machines, kitchen equipment, computers and refrigerators.
Control airing by having your external let breathe balanced. Most building owners have drawings of the native HVAC system installation. Have the drawings reviewed by a mechanical engineer to pronounce your external let breathe flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should nevertheless be competent to create recommendations for improvement.
Addressing these items is your first step to reducing vivaciousness and HVAC costs.
The second step to reach vivaciousness and HVAC system optimization is knowing your system. Your HVAC system is necessary to your interior environment, but it next represents a large component of your encourage expenses. even though it is beyond the scope of this article to discuss all system, a few recommendations can be addressed. all HVAC system component has increased in efficiency beyond the years. If your system is more than 13 years old, it's get older to begin planning for an improve to additional equipment. capably maintained residential systems have a vivaciousness expectancy of very nearly 15 years or correspondingly but seem to fail at the worse times. Have a replacement plan ready for the morning your equipment fails.
Commercial systems vary, but if your building is using packaged equipment or split systems, the same lifetime can be expected. For larger public notice systems and industrial applications, the HVAC system may be more puzzling and require an individual analysis by a mechanical engineer. As I said, HVAC systems change and no one-size-fits-all analysis works for larger systems. What all these systems have in common is they are normally fueled by electricity. Electricity cost money, correspondingly any efforts in the handing out of increased efficiency is a plus.
HVAC System Tips:
Find a approved consultant you trust. If you are a home owner or small public notice building owner, locate a fine HVAC company or mechanic to examine and maintain your system. If you are a large public notice building owner, locate a public notice HVAC company for normal keep and a fine mechanical engineer for specific guidance. I attain not suggest using a mechanical engineer employed by the HVAC Company; locate a third party engineer for avant-garde information.
Verify your HVAC system load. home owners should use ACCA's calendar J count method and all others should have a load conducted by a mechanical engineer. public notice buildings have more requirements similar to code conformance, minimum airing rates, etc and are individual to each building.
Load reduction-Read the instruction above.
Select equipment sized for your load. NEVER OVERSIZE! More-is-better does not apply for HVAC systems. It will cost more to purchase the equipment as capably as law it. acquire the load and the equipment selection right the first time.
Purchase tall efficiency or vivaciousness Star equipment. Many of the additional systems supplement modifiable zeal drives for fans and compressors. beyond the years of ownership this will be paid incite many get older over. Compare conventional efficiency equipment to tall efficiency equipment in terms of initial cost and vivaciousness cycle costs. Any fine HVAC company or mechanical engineer can come by this information.
Consider some form of vivaciousness recovery for any let breathe exhausted from the building and use it to condition the incoming well-ventilated air. This is let breathe you have paid to condition, correspondingly extracting some of the vivaciousness back exhausting it should be a priority.
For large public notice buildings, consider conditioning the external let breathe past a dedicated external let breathe unit. This will eliminate any problems similar to humidity rule in most instances. It will next accrual occupant comfort and permit for additional downsizing of equipment.
Commercial buildings should consider economizers upon their equipment. Most current codes require economizers upon equipment beyond 15 tons in size. Often nearby at a low incremental cost, these units draw in well-ventilated let breathe from the external past the temperature (sometimes humidity) external is demean than the temperature inside.
Home owners and small public notice building owners should install programmable thermostats. public notice building owners should install a lecture to Digital rule (DDC) system. The investment in either of these will pay incite more than the cost in a small amount of time. admittance more below.
The third step to reach vivaciousness and HVAC system optimization is controlling your system.
Programmable Thermostats-The age of digital controls has made saving vivaciousness easy. One of the best investments for the homeowner or small public notice building owner is a programmable thermostat. These are simple to use and incorporate strategies based upon get older scheduling. Most manufacturers give 7 morning programs and setback/setup programs which will tilt the HVAC system upon and off to praise your schedule and desired indoor temperature. This is a good mannerism to ensure HVAC systems are used forlorn past necessary.
DDC Systems-For the large public notice building, I consider this as a must have system. Installation costs have steadily decreased and the law reliability has steadily increased. They can be integrated into any system and expanded as required. Some of the more well-liked features of these systems are optimized start/stop of the HVAC system, multipart zone control, multipart temperature sensor locations and airing control. The best part of these systems is their skill to be scaled stirring to the largest of public notice applications. This means you can install a simple system and increase more controls far ahead to incorporate your amassed HVAC system. Again, the payback is quick and capably worth the investment.
Operation and Maintenance
The fourth and last step to reach vivaciousness and HVAC system optimization is operation and maintenance. The most efficient HVAC systems are capably maintained. Ensure reliability, efficiency and a long vivaciousness for your HVAC system by past these tips.
Find a approved consultant you trust. If you are a home owner or small public notice building owner, locate a fine HVAC company or mechanic to examine and maintain your system. If you are a large public notice building owner, locate a public notice HVAC company for normal maintenance. create distinct you lp and document all servicing past dates, get older and names of the servicing person.
Home owners should always acquire a seasonal tune up. The operation of your system will change past the seasons of the year.
Replace your let breathe filters regularly. Don't use whatever less later a MERV 5 filter to assure dust and fibers are removed. clean filters will keep lover energy.
Coil Cleaning-This is always a big item overlooked by residential and public notice building owners. Condenser coils amassed dirt and debris upon their surfaces because they are outside. This makes the compressor law harder and results in a far ahead refrigerant temperature in your refrigeration system. Evaporator and heating coils amassed dust and fibers that proclaim inside your home or building. clean them at least past a year