Let's talk roughly 30-40% of your electricity bill. That's how much it costs the average homeowner or want ad building owner to meet the expense of 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 liveliness and HVAC. They don't desire to sacrifice the interior environmental conditions, but they pull off desire a point-by-point plot to follow. The interesting event that often happens is that liveliness bills are lowered substantially and the HVAC system statute is improved. This is a satisfactory statute of any mechanical engineer specializing in liveliness and HVAC.
The suggestion upon this page will back homeowners, building owners and building operators make informed decisions roughly existing HVAC systems or well ahead upgrades.
Operation and Maintenance
The first step to achieve liveliness and HVAC system optimization is load reduction. This step normally consists of a long range plot which itemizes the happenings to be taken based upon best compensation upon investment. Reducing your building load allows the existing HVAC system to statute more efficiently. If a other system or systems are visceral considered, it will be more cost dynamic to design for the edited load as opposed to the existing load. A few common load dwindling strategies include:
Tighten the building shell and add other insulation. tally 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 big item upon some buildings that still have single pane windows. The installation of double pane windows next a thermal fracture is a great compensation upon investment. make determined they are liveliness STAR attributed 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 allocation of the HVAC load and roughly speaking any efforts in this doling out will subjugate the cooling requirement for the building. Accent lighting (sometimes called architectural lighting) are not always liveliness efficient and should not be considered if you desire to reduce liveliness and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned spread than older afire technology. If you have a compensation air plenum on the other hand of compensation air ductwork, announce lively troffers consequently 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 gift saver other will reduce the sensible heat get in the space. Items to announce tote up copy machines, kitchen equipment, computers and refrigerators.
Control ventilation by having your outside air balanced. Most building owners have drawings of the original HVAC system installation. Have the drawings reviewed by a mechanical engineer to support your outside air flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should still be clever to make recommendations for improvement.
Addressing these items is your first step to reducing liveliness and HVAC costs.
The second step to achieve liveliness and HVAC system optimization is knowing your system. Your HVAC system is necessary to your interior environment, but it as well as represents a large component of your facilitate expenses. even if it is over the scope of this article to discuss all system, a few recommendations can be addressed. all HVAC system component has increased in efficiency over the years. If your system is more than 13 years old, it's times to start planning for an rearrange to other equipment. capably maintained residential systems have a liveliness expectancy of roughly 15 years or consequently but seem to fail at the worse times. Have a replacement plot ready for the 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 want 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 all these systems have in common is they are normally fueled by electricity. Electricity cost money, consequently any efforts in the doling out of increased efficiency is a plus.
HVAC System Tips:
Find a attributed consultant you trust. If you are a home owner or little want ad building owner, locate a good HVAC company or mechanic to evaluate and maintain your system. If you are a large want ad building owner, locate a want ad HVAC company for normal maintenance and a good mechanical engineer for specific guidance. I pull off not suggest using a mechanical engineer employed by the HVAC Company; locate a third party engineer for modern information.
Verify your HVAC system load. home owners should use ACCA's encyclopedia J count method and all others should have a load conducted by a mechanical engineer. want ad buildings have more requirements associated to code conformance, minimum ventilation rates, etc and are individual to each building.
Load reduction-Read the suggestion 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 statute it. acquire the load and the equipment selection right the first time.
Purchase high efficiency or liveliness Star equipment. Many of the other systems tote up amendable rapidity drives for fans and compressors. over the years of ownership this will be paid back many times over. Compare satisfactory efficiency equipment to high efficiency equipment in terms of initial cost and liveliness cycle costs. Any good HVAC company or mechanical engineer can get this information.
Consider some form of liveliness recovery for any air exhausted from the building and use it to condition the incoming lively air. This is air you have paid to condition, consequently extracting some of the liveliness back exhausting it should be a priority.
For large want ad buildings, announce conditioning the outside air next a dedicated outside air unit. This will eliminate any problems associated to humidity rule in most instances. It will as well as accrual occupant comfort and allow for other downsizing of equipment.
Commercial buildings should announce economizers upon their equipment. Most current codes require economizers upon equipment over 15 tons in size. Often to hand at a low incremental cost, these units magnetism in lively air from the outside next the temperature (sometimes humidity) outside 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 refer Digital rule (DDC) system. The investment in either of these will pay back more than the cost in a little amount of time. entrance more below.
The third step to achieve liveliness and HVAC system optimization is controlling your system.
Programmable Thermostats-The age of digital controls has made saving liveliness easy. One of the best investments for the homeowner or little want ad building owner is a programmable thermostat. These are easy to use and incorporate strategies based upon times scheduling. Most manufacturers meet the expense of 7 daylight programs and setback/setup programs which will approach the HVAC system upon and off to compliment your schedule and desired indoor temperature. This is a great artifice to ensure HVAC systems are used on your own next necessary.
DDC Systems-For the large want ad building, I announce this as a must have system. Installation costs have steadily decreased and the statute 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, merged zone control, merged temperature sensor locations and ventilation control. The best allocation of these systems is their ability to be scaled going on to the largest of want ad applications. This means you can install a easy system and add more controls well ahead to incorporate your collect HVAC system. Again, the payback is rude and capably worth the investment.
Operation and Maintenance
The fourth and last step to achieve liveliness and HVAC system optimization is operation and maintenance. The most efficient HVAC systems are capably maintained. Ensure reliability, efficiency and a long liveliness for your HVAC system by next these tips.
Find a attributed consultant you trust. If you are a home owner or little want ad building owner, locate a good HVAC company or mechanic to evaluate and maintain your system. If you are a large want ad building owner, locate a want ad HVAC company for normal maintenance. make determined you stamp album and document all servicing next dates, times and names of the servicing person.
Home owners should always acquire a seasonal song up. The operation of your system will adjust next the seasons of the year.
Replace your air filters regularly. Don't use whatever less then a MERV 5 filter to assure dust and fibers are removed. tidy filters will keep devotee energy.
Coil Cleaning-This is always a big item overlooked by residential and want ad building owners. Condenser coils collect dirt and debris upon their surfaces because they are outside. This makes the compressor statute harder and results in a well ahead refrigerant temperature in your refrigeration system. Evaporator and heating coils collect dust and fibers that spread inside your home or building. tidy them at least next a year