Let's chat roughly 30-40% of your electricity bill. That's how much it costs the average homeowner or public notice building owner to pay 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 cut their cost of sparkle and HVAC. They don't desire to sacrifice the interior environmental conditions, but they accomplish desire a point-by-point plan to follow. The engaging matter that often happens is that sparkle bills are lowered substantially and the HVAC system pretend is improved. This is a pleasing pretend of any mechanical engineer specializing in sparkle and HVAC.
The assistance on this page will urge on homeowners, building owners and building operators make informed decisions roughly existing HVAC systems or far ahead upgrades.
Operation and Maintenance
The first step to achieve sparkle and HVAC system optimization is load reduction. This step normally consists of a long range plan which itemizes the goings-on to be taken based on best return on investment. Reducing your building load allows the existing HVAC system to pretend more efficiently. If a supplementary system or systems are living thing considered, it will be more cost in action to design for the reduced load as opposed to the existing load. A few common load narrowing strategies include:
Tighten the building shell and accumulate supplementary insulation. adding together insulation in existing buildings may not be achievable in some instances, appropriately 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 still have single pane windows. The installation of double pane windows once a thermal break is a great return on investment. make clear they are sparkle STAR official 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 allowance of the HVAC load and in relation to any efforts in this presidency 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 desire to cut sparkle and HVAC costs. Energy-efficient lighting systems emit less heat into conditioned tune than older bright technology. If you have a return let breathe plenum on the other hand of return let breathe ductwork, deem blithe troffers appropriately 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 capability magpie other will cut the sensible heat get in the space. Items to deem put in copy machines, kitchen equipment, computers and refrigerators.
Control freshening by having your outdoor let breathe balanced. Most building owners have drawings of the original HVAC system installation. Have the drawings reviewed by a mechanical engineer to assert your outdoor let breathe flow rates conform to the latest code requirements. If no drawings are available, your mechanical engineer should still be skilled to make recommendations for improvement.
Addressing these items is your first step to reducing sparkle and HVAC costs.
The second step to achieve sparkle and HVAC system optimization is knowing your system. Your HVAC system is valuable to your interior environment, but it with represents a large component of your bolster expenses. while 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 era to begin planning for an remodel to supplementary equipment. with ease maintained residential systems have a sparkle expectancy of roughly 15 years or appropriately but seem to fail at the worse times. Have a replacement plan ready for the day 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 public notice 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 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, appropriately any efforts in the presidency of increased efficiency is a plus.
HVAC System Tips:
Find a official consultant you trust. If you are a house owner or small public notice building owner, find a fine HVAC company or mechanic to dissect and maintain your system. If you are a large public notice building owner, find a public notice HVAC company for normal allowance and a fine mechanical engineer for specific guidance. I accomplish not recommend 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 directory J tallying method and all others should have a load conducted by a mechanical engineer. public notice buildings have more requirements linked to code conformance, minimum freshening rates, etc and are individual to each building.
Load reduction-Read the assistance 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 pretend it. get the load and the equipment selection right the first time.
Purchase tall efficiency or sparkle Star equipment. Many of the supplementary systems put in adaptable eagerness drives for fans and compressors. on top of the years of ownership this will be paid urge on many era over. Compare pleasing efficiency equipment to tall efficiency equipment in terms of initial cost and sparkle cycle costs. Any fine HVAC company or mechanical engineer can make a purchase of this information.
Consider some form of sparkle recovery for any let breathe exhausted from the building and use it to condition the incoming blithe air. This is let breathe you have paid to condition, appropriately extracting some of the sparkle in the past exhausting it should be a priority.
For large public notice buildings, deem conditioning the outdoor let breathe once a dedicated outdoor let breathe unit. This will eliminate any problems linked to humidity govern in most instances. It will with growth occupant comfort and permit for supplementary downsizing of equipment.
Commercial buildings should deem economizers on their equipment. Most current codes require economizers on equipment on top of 15 tons in size. Often affable at a low incremental cost, these units pull in blithe let breathe from the outdoor once the temperature (sometimes humidity) outdoor is subjugate than the temperature inside.
Home owners and small public notice building owners should install programmable thermostats. public notice building owners should install a dispatch Digital govern (DDC) system. The investment in either of these will pay urge on more than the cost in a small amount of time. get into more below.
The third step to achieve 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 small public notice building owner is a programmable thermostat. These are easy to use and incorporate strategies based on era scheduling. Most manufacturers pay for 7 day programs and setback/setup programs which will direction the HVAC system on and off to compliment your schedule and desired indoor temperature. This is a great pretentiousness to ensure HVAC systems are used abandoned once necessary.
DDC Systems-For the large public notice building, I deem this as a must have system. Installation costs have steadily decreased and the pretend 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 freshening control. The best allowance of these systems is their success to be scaled happening to the largest of public notice applications. This means you can install a easy system and accumulate more controls far ahead to incorporate your entire sum HVAC system. Again, the payback is hasty and with ease worth the investment.
Operation and Maintenance
The fourth and last step to achieve 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 once these tips.
Find a official consultant you trust. If you are a house owner or small public notice building owner, find a fine HVAC company or mechanic to dissect and maintain your system. If you are a large public notice building owner, find a public notice HVAC company for normal maintenance. make clear you lp and document all servicing once dates, era and names of the servicing person.
Home owners should always get a seasonal tune up. The operation of your system will change once the seasons of the year.
Replace your let breathe filters regularly. Don't use all less next a MERV 5 filter to assure dust and fibers are removed. tidy filters will save fan energy.
Coil Cleaning-This is always a huge item overlooked by residential and public notice building owners. Condenser coils entire sum dirt and debris on their surfaces because they are outside. This makes the compressor pretend harder and results in a far ahead refrigerant temperature in your refrigeration system. Evaporator and heating coils entire sum dust and fibers that tune inside your house or building. tidy them at least once a year