Let's talk virtually 30-40% of your electricity bill. That's how much it costs the average homeowner or poster building owner to have the funds for 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 reduce their cost of life and HVAC. They don't want to sacrifice the interior environmental conditions, but they realize want a point-by-point plan to follow. The engaging thing that often happens is that life bills are lowered substantially and the HVAC system achievement is improved. This is a suitable achievement of any mechanical engineer specializing in life and HVAC.
The counsel upon this page will put up to homeowners, building owners and building operators create informed decisions virtually existing HVAC systems or far ahead upgrades.
Operation and Maintenance
The first step to attain life 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 achievement more efficiently. If a additional system or systems are creature considered, it will be more cost vigorous to design for the reduced load as opposed to the existing load. A few common load dwindling strategies include:
Tighten the building shell and go to additional insulation. surcharge 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 upon some buildings that yet have single pane windows. The installation of double pane windows gone a thermal break is a good recompense upon investment. create distinct they are life STAR qualified windows. Tinting or Low-E coatings will even be better.
Upgrading lighting systems. The average poster 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 in this area any efforts in this management will humiliate the cooling requirement for the building. Accent lighting (sometimes called architectural lighting) are not always life efficient and should not be considered if you want to reduce life and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned atmosphere than older rosy technology. If you have a recompense air plenum then again of recompense air ductwork, decide spacious troffers consequently that some of the heat from the lights is returned to the HVAC system then again of going into the occupied area.
Selecting efficient equipment and electronic devices that have a faculty squirrel substitute will reduce the sensible heat get in the space. Items to decide enhance copy machines, kitchen equipment, computers and refrigerators.
Control airing by having your outdoor air balanced. Most building owners have drawings of the native HVAC system installation. Have the drawings reviewed by a mechanical engineer to establish your outdoor air flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should yet be skilled to create recommendations for improvement.
Addressing these items is your first step to reducing life and HVAC costs.
The second step to attain life and HVAC system optimization is knowing your system. Your HVAC system is necessary to your interior environment, but it as a consequence represents a large component of your help expenses. while it is more than the scope of this article to discuss every system, a few recommendations can be addressed. every HVAC system component has increased in efficiency more than the years. If your system is more than 13 years old, it's era to start planning for an upgrade to additional equipment. capably maintained residential systems have a life expectancy of virtually 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 similar lifetime can be expected. For larger poster systems and industrial applications, the HVAC system may be more complex 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 every these systems have in common is they are normally fueled by electricity. Electricity cost money, consequently any efforts in the management of increased efficiency is a plus.
HVAC System Tips:
Find a qualified consultant you trust. If you are a house owner or small poster building owner, find a good HVAC company or mechanic to investigate and maintain your system. If you are a large poster building owner, find a poster HVAC company for normal maintenance and a good mechanical engineer for specific guidance. I realize not suggest using a mechanical engineer employed by the HVAC Company; find a third party engineer for militant information.
Verify your HVAC system load. house owners should use ACCA's calendar J tallying method and every others should have a load conducted by a mechanical engineer. poster buildings have more requirements amalgamated to code conformance, minimum airing rates, etc and are individual to each building.
Load reduction-Read the counsel 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 capably as achievement it. get the load and the equipment selection right the first time.
Purchase tall efficiency or life Star equipment. Many of the additional systems enhance modifiable eagerness drives for fans and compressors. more than the years of ownership this will be paid put up to many era over. Compare suitable efficiency equipment to tall efficiency equipment in terms of initial cost and life cycle costs. Any good HVAC company or mechanical engineer can purchase this information.
Consider some form of life recovery for any air exhausted from the building and use it to condition the incoming spacious air. This is air you have paid to condition, consequently extracting some of the life before exhausting it should be a priority.
For large poster buildings, decide conditioning the outdoor air gone a dedicated outdoor air unit. This will eliminate any problems amalgamated to humidity govern in most instances. It will as a consequence accumulation occupant comfort and allow for additional downsizing of equipment.
Commercial buildings should decide economizers upon their equipment. Most current codes require economizers upon equipment more than 15 tons in size. Often easy to use at a low incremental cost, these units draw in spacious air from the outdoor gone the temperature (sometimes humidity) outdoor is humiliate than the temperature inside.
Home owners and small poster building owners should install programmable thermostats. poster building owners should install a lecture to Digital govern (DDC) system. The investment in either of these will pay put up to more than the cost in a small amount of time. admittance more below.
The third step to attain life and HVAC system optimization is controlling your system.
Programmable Thermostats-The age of digital controls has made saving life easy. One of the best investments for the homeowner or small poster building owner is a programmable thermostat. These are simple to use and incorporate strategies based upon era scheduling. Most manufacturers have the funds for 7 daylight programs and setback/setup programs which will turn the HVAC system upon and off to compliment your schedule and desired indoor temperature. This is a good quirk to ensure HVAC systems are used only gone necessary.
DDC Systems-For the large poster building, I decide this as a must have system. Installation costs have steadily decreased and the achievement 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 success to be scaled in the works to the largest of poster applications. This means you can install a simple system and go to more controls far ahead to incorporate your amassed HVAC system. Again, the payback is sudden and capably worth the investment.
Operation and Maintenance
The fourth and last step to attain life and HVAC system optimization is operation and maintenance. The most efficient HVAC systems are capably maintained. Ensure reliability, efficiency and a long life for your HVAC system by gone these tips.
Find a qualified consultant you trust. If you are a house owner or small poster building owner, find a good HVAC company or mechanic to investigate and maintain your system. If you are a large poster building owner, find a poster HVAC company for normal maintenance. create distinct you record and document every servicing gone dates, era and names of the servicing person.
Home owners should always get a seasonal tune up. The operation of your system will change gone the seasons of the year.
Replace your air filters regularly. Don't use anything less later a MERV 5 filter to assure dust and fibers are removed. clean filters will save aficionada energy.
Coil Cleaning-This is always a huge item overlooked by residential and poster building owners. Condenser coils amassed dirt and debris upon their surfaces because they are outside. This makes the compressor achievement harder and results in a far ahead refrigerant temperature in your refrigeration system. Evaporator and heating coils amassed dust and fibers that atmosphere inside your house or building. clean them at least gone a year