Let's talk roughly 30-40% of your electricity bill. That's how much it costs the average homeowner or announcement building owner to come up with the money for 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 moving picture and HVAC. They don't desire to sacrifice the interior environmental conditions, but they complete desire a point-by-point plot to follow. The interesting concern that often happens is that moving picture bills are lowered substantially and the HVAC system bill is improved. This is a tolerable bill of any mechanical engineer specializing in moving picture and HVAC.
The guidance on this page will back up homeowners, building owners and building operators make informed decisions roughly existing HVAC systems or well ahead upgrades.
Operation and Maintenance
The first step to attain moving picture and HVAC system optimization is load reduction. This step normally consists of a long range plot which itemizes the goings-on to be taken based on best reward on investment. Reducing your building load allows the existing HVAC system to bill more efficiently. If a new system or systems are brute considered, it will be more cost in action to design for the condensed load as opposed to the existing load. A few common load dwindling strategies include:
Tighten the building shell and go to new insulation. extra insulation in existing buildings may not be achievable in some instances, as a result 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 as soon as a thermal rupture is a great reward on investment. make definite they are moving picture STAR recognized windows. Tinting or Low-E coatings will even be better.
Upgrading lighting systems. The average announcement building has a lighting density of 2-3 watts per square foot which maintains proper lighting levels. This is a significant allocation of the HVAC load and just about any efforts in this dealing out will belittle 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 desire to shorten moving picture and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned publicize than older incandescent technology. If you have a reward expose plenum instead of reward expose ductwork, find buoyant troffers as a result 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 capability collector out of the ordinary will shorten the sensible heat gain in the space. Items to find append copy machines, kitchen equipment, computers and refrigerators.
Control freshening by having your uncovered expose balanced. Most building owners have drawings of the native HVAC system installation. Have the drawings reviewed by a mechanical engineer to encourage your uncovered expose flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should yet be adept to make recommendations for improvement.
Addressing these items is your first step to reducing moving picture and HVAC costs.
The second step to attain moving picture and HVAC system optimization is knowing your system. Your HVAC system is indispensable to your interior environment, but it with represents a large component of your help expenses. even though it is on top of the scope of this article to discuss all system, a few recommendations can be addressed. all HVAC system component has increased in efficiency on top of the years. If your system is more than 13 years old, it's period to begin planning for an restore to new equipment. with ease maintained residential systems have a moving picture expectancy of roughly 15 years or as a result but seem to fail at the worse times. Have a replacement plot ready for the hours of daylight 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 announcement systems and industrial applications, the HVAC system may be more obscure 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, as a result any efforts in the dealing out of increased efficiency is a plus.
HVAC System Tips:
Find a recognized consultant you trust. If you are a house owner or little announcement building owner, locate a fine HVAC company or mechanic to examine and maintain your system. If you are a large announcement building owner, locate a announcement HVAC company for normal keep and a fine mechanical engineer for specific guidance. I complete not suggest using a mechanical engineer employed by the HVAC Company; locate a third party engineer for campaigner information.
Verify your HVAC system load. house owners should use ACCA's encyclopedia J adding up method and all others should have a load conducted by a mechanical engineer. announcement buildings have more requirements partnered to code conformance, minimum freshening rates, etc and are individual to each building.
Load reduction-Read the guidance 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 with ease as bill it. get the load and the equipment selection right the first time.
Purchase tall efficiency or moving picture Star equipment. Many of the new systems append amendable zeal drives for fans and compressors. on top of the years of ownership this will be paid back up many period over. Compare tolerable efficiency equipment to tall efficiency equipment in terms of initial cost and moving picture cycle costs. Any fine HVAC company or mechanical engineer can gain this information.
Consider some form of moving picture recovery for any expose exhausted from the building and use it to condition the incoming buoyant air. This is expose you have paid to condition, as a result extracting some of the moving picture past exhausting it should be a priority.
For large announcement buildings, find conditioning the uncovered expose as soon as a dedicated uncovered expose unit. This will eliminate any problems partnered to humidity manage in most instances. It will with lump occupant comfort and allow for new downsizing of equipment.
Commercial buildings should find economizers on their equipment. Most current codes require economizers on equipment on top of 15 tons in size. Often friendly at a low incremental cost, these units glamor in buoyant expose from the uncovered as soon as the temperature (sometimes humidity) uncovered is belittle than the temperature inside.
Home owners and little announcement building owners should install programmable thermostats. announcement building owners should install a speak to Digital manage (DDC) system. The investment in either of these will pay back up more than the cost in a little amount of time. contact more below.
The third step to attain 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 announcement building owner is a programmable thermostat. These are easy to use and incorporate strategies based on period scheduling. Most manufacturers come up with the money for 7 hours of daylight programs and setback/setup programs which will twist the HVAC system on and off to praise your schedule and desired indoor temperature. This is a great pretension to ensure HVAC systems are used forlorn as soon as necessary.
DDC Systems-For the large announcement building, I find this as a must have system. Installation costs have steadily decreased and the bill 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, compound zone control, compound temperature sensor locations and freshening control. The best allocation of these systems is their expertise to be scaled in the works to the largest of announcement applications. This means you can install a easy system and go to more controls well ahead to incorporate your collective HVAC system. Again, the payback is sudden and with ease worth the investment.
Operation and Maintenance
The fourth and last step to attain moving picture and HVAC system optimization is operation and maintenance. The most efficient HVAC systems are with ease maintained. Ensure reliability, efficiency and a long moving picture for your HVAC system by as soon as these tips.
Find a recognized consultant you trust. If you are a house owner or little announcement building owner, locate a fine HVAC company or mechanic to examine and maintain your system. If you are a large announcement building owner, locate a announcement HVAC company for normal maintenance. make definite you record and document all servicing as soon as dates, period and names of the servicing person.
Home owners should always get a seasonal tune up. The operation of your system will change as soon as the seasons of the year.
Replace your expose filters regularly. Don't use whatever less subsequently a MERV 5 filter to assure dust and fibers are removed. tidy filters will keep fan energy.
Coil Cleaning-This is always a huge item overlooked by residential and announcement building owners. Condenser coils collective dirt and debris on their surfaces because they are outside. This makes the compressor bill harder and results in a well ahead refrigerant temperature in your refrigeration system. Evaporator and heating coils collective dust and fibers that publicize inside your house or building. tidy them at least as soon as a year