Let's chat about 30-40% of your electricity bill. That's how much it costs the average homeowner or want ad building owner to have enough money 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 cut their cost of sparkle and HVAC. They don't want to sacrifice the interior environmental conditions, but they attain want a point-by-point scheme to follow. The fascinating event that often happens is that sparkle bills are lowered substantially and the HVAC system ham it up is improved. This is a all right ham it up of any mechanical engineer specializing in sparkle and HVAC.
The instruction on this page will support homeowners, building owners and building operators create informed decisions about existing HVAC systems or later upgrades.
Operation and Maintenance
The first step to attain sparkle and HVAC system optimization is load reduction. This step normally consists of a long range scheme which itemizes the comings and goings to be taken based on best return on investment. Reducing your building load allows the existing HVAC system to ham it up more efficiently. If a other system or systems are creature considered, it will be more cost functional to design for the abbreviated load as opposed to the existing load. A few common load lessening strategies include:
Tighten the building shell and add other insulation. surcharge insulation in existing buildings may not be achievable in some instances, therefore more consideration should be aimed at the exterior shell, especially windows and doors.
Installing energy-efficient windows. This is a big item on some buildings that still have single pane windows. The installation of double pane windows as soon as a thermal rupture is a great return on investment. create determined they are sparkle STAR recognized windows. Tinting or Low-E coatings will even be better.
Upgrading lighting systems. The average want ad building has a lighting density of 2-3 watts per square foot which maintains proper lighting levels. This is a significant allowance of the HVAC load and in relation to any efforts in this paperwork will subjugate the cooling requirement for the building. Accent lighting (sometimes called architectural lighting) are not always sparkle efficient and should not be considered if you want to cut sparkle and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned aerate than older shining technology. If you have a return freshen plenum instead of return freshen ductwork, rule vivacious troffers therefore 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 faculty collector complementary will cut the sensible heat get in the space. Items to rule enlarge copy machines, kitchen equipment, computers and refrigerators.
Control airing by having your external freshen balanced. Most building owners have drawings of the original HVAC system installation. Have the drawings reviewed by a mechanical engineer to confirm your external freshen flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should still be nimble to create recommendations for improvement.
Addressing these items is your first step to reducing sparkle and HVAC costs.
The second step to attain sparkle and HVAC system optimization is knowing your system. Your HVAC system is indispensable to your interior environment, but it furthermore represents a large component of your serve expenses. even if it is higher than the scope of this article to discuss all system, a few recommendations can be addressed. all HVAC system component has increased in efficiency higher than the years. If your system is more than 13 years old, it's mature to start planning for an improve to other equipment. with ease maintained residential systems have a sparkle expectancy of about 15 years or therefore but seem to fail at the worse times. Have a replacement scheme ready for the hours of daylight your equipment fails.
Commercial systems vary, but if your building is using packaged equipment or split systems, the similar lifetime can be expected. For larger want ad systems and industrial applications, the HVAC system may be more rarefied 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 all these systems have in common is they are normally fueled by electricity. Electricity cost money, therefore any efforts in the paperwork of increased efficiency is a plus.
HVAC System Tips:
Find a recognized consultant you trust. If you are a home owner or little want ad building owner, find a good HVAC company or mechanic to explore and preserve your system. If you are a large want ad building owner, find a want ad HVAC company for usual keep and a good mechanical engineer for specific guidance. I attain not suggest using a mechanical engineer employed by the HVAC Company; find a third party engineer for avant-garde information.
Verify your HVAC system load. home owners should use ACCA's encyclopedia J adding together method and all others should have a load conducted by a mechanical engineer. want ad buildings have more requirements connected 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 buy the equipment as with ease as ham it up it. acquire the load and the equipment selection right the first time.
Purchase tall efficiency or sparkle Star equipment. Many of the other systems enlarge modifiable quickness drives for fans and compressors. higher than the years of ownership this will be paid support many mature over. Compare all right efficiency equipment to tall efficiency equipment in terms of initial cost and sparkle cycle costs. Any good HVAC company or mechanical engineer can purchase this information.
Consider some form of sparkle recovery for any freshen exhausted from the building and use it to condition the incoming vivacious air. This is freshen you have paid to condition, therefore extracting some of the sparkle in the past exhausting it should be a priority.
For large want ad buildings, rule conditioning the external freshen as soon as a dedicated external freshen unit. This will eliminate any problems connected to humidity control in most instances. It will furthermore growth occupant comfort and allow for other downsizing of equipment.
Commercial buildings should rule economizers on their equipment. Most current codes require economizers on equipment higher than 15 tons in size. Often easy to get to at a low incremental cost, these units attraction in vivacious freshen from the external as soon as the temperature (sometimes humidity) external is subjugate than the temperature inside.
Home owners and little want ad building owners should install programmable thermostats. want ad building owners should install a take in hand Digital control (DDC) system. The investment in either of these will pay support more than the cost in a little amount of time. right to use more below.
The third step to attain sparkle and HVAC system optimization is controlling your system.
Programmable Thermostats-The age of digital controls has made saving sparkle easy. One of the best investments for the homeowner or little want ad building owner is a programmable thermostat. These are simple to use and incorporate strategies based on mature scheduling. Most manufacturers have enough money 7 hours of daylight programs and setback/setup programs which will position the HVAC system on and off to compliment your schedule and desired indoor temperature. This is a great quirk to ensure HVAC systems are used by yourself as soon as necessary.
DDC Systems-For the large want ad building, I rule this as a must have system. Installation costs have steadily decreased and the ham it up 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, merged zone control, merged temperature sensor locations and airing control. The best allowance of these systems is their exploit to be scaled in the works to the largest of want ad applications. This means you can install a simple system and add more controls later to incorporate your combination HVAC system. Again, the payback is quick and with ease worth the investment.
Operation and Maintenance
The fourth and last step to attain sparkle and HVAC system optimization is operation and maintenance. The most efficient HVAC systems are with ease maintained. Ensure reliability, efficiency and a long sparkle for your HVAC system by as soon as these tips.
Find a recognized consultant you trust. If you are a home owner or little want ad building owner, find a good HVAC company or mechanic to explore and preserve your system. If you are a large want ad building owner, find a want ad HVAC company for usual maintenance. create determined you record and document all servicing as soon as dates, mature and names of the servicing person.
Home owners should always acquire a seasonal song up. The operation of your system will adjust as soon as the seasons of the year.
Replace your freshen filters regularly. Don't use anything less later a MERV 5 filter to assure dust and fibers are removed. tidy filters will save fan energy.
Coil Cleaning-This is always a big item overlooked by residential and want ad building owners. Condenser coils combination dirt and debris on their surfaces because they are outside. This makes the compressor ham it up harder and results in a later refrigerant temperature in your refrigeration system. Evaporator and heating coils combination dust and fibers that aerate inside your home or building. tidy them at least as soon as a year