This page gives you a very good air conditioning and heating system overview. It covers all the parts of an HVAC system
How heating and air conditioning systems achieve lowest operating, repair costs, & maximum comfort.
What happens when something goes wrong?
What problems do the average air conditioning and heating system have?
What repairs save the most money?
Efficient air conditioning and heating only happens when: the condenser, the evaporator coil, the furnace & the line set are all with-in each others engineered capacity, properly sized for your home or office or commercial establishment and installed correctly! PERIOD.
Heating and air conditioning equipment is very tightly engineered. Each piece will only operate efficiently at set parameters.
To explain: Every inside coil (evaporator coil) is engineered for a specific air flow and BTU. This means the heater (furnace) must blow the air flow needed by the evaporator coil. No more and no less.
But that also means the condenser must also deliver the amount of BTU's the evaporator coils is designed for too.
This also means the line set must match.
Plus the ducting must be able to handle the air flows too.
When it all matches the whole system works at it's most efficient rate and it lasts longer.
Everything everyone should know about HVAC systems is right here and it's accurate.
What happens when the air flow across the evaporator coil is too high for the air conditioning system? Answer: your house will not be comfortable. The system cannot remove excess humidity and your home becomes cool but muggy. The air conditioning runs more often for shorter cycles, consumes more electricity, increases repair costs and wears out faster.
When air flow across the evaporator coil is too low as required by the air conditioning system your house will not cool well. The unit ices up, leading to early compressor failure. Valves wear out quickly. The whole system runs harder. It consumes more electricity, increases repairs and wears out faster.
With either low or high air flows electricity bills can easily increase $200.00 to $600.00 per season.
When the line set is too small your air conditioning energy efficiency is reduced approximately 2 seer rating points. This means about $256.00 in extra electricity per season.* based on 12 cents per kilowatt hour for electricity and living in an area where air conditioning is required often.
The compressor works harder and needs repair or replacement earlier.
Nothing, in fact it's okay! The compressor will be spared some work. The higher the AC efficiency rating the larger the diameter of the line set is required.
A dirty system keeps on costing you money, lots of it!
Dirty inside coils (the evaporator) from dust, hair, grease and pet fur just to name a few increase energy costs greatly.
Dirty outside coils (the condenser) from dust and oxidization cost extra electricity. Dirt build-up and oxidization, cannot be prevented and must be removed.
A dirty non maintained system costs a minimum of 20% and more often 30% extra electricity, adding many thousands of dollars of extra cost over the systems lifespan. A dirty non maintained system usually costs a minimum of $500.00 in extra repair costs over a maintained air conditioning system in the first 5 years. Extra repair costs escalate greatly with each passing year as do extra energy costs. Add the two up and it's big dollars you're spending needlessly.
Problems effecting air conditioning efficiency and comfort. These are the actual HVAC problems found in southern California homes today.
Leaky ducts cost big money all year long. Leaky ducts cost about 18% extra electric costs for air conditioning. Plus a bigger system is needed! You spend more capital money on both air conditioning and heating equipment. Your heating bills are higher too! Because the system runs longer repair cost goes up too. BOTTOM LINE Have your ducts sealed or replaced once and enjoy the energy and capital savings for good.
Freon overcharge and undercharge cost energy and reduces system lifespan.
Low air flow kills systems and costs you much more energy.
Study results: Data is from appliance doctor study commissioned by SCE
Actual savings based on repair type. Source appliance doctor study SCE
As you can see substantial money can be saved thru the four repairs. Additionally your equipment will last longer and require fewer additional repairs!
In 1923 research identified the proper indoor comfort zone. Tolerance to heat is affected by the amount of humidity in the air. At higher temperatures humidity must be held lower to ensure comfort. Air conditioning can easily bring the temperature into the comfort range. In fact, bigger air conditioners virtually ensure that the temperature inside can be as low as we want it.
But, cold alone is not comfortable. In fact, it is distinctly uncomfortable. To maintain comfort moisture levels must also be controlled. This is best achieved by smaller, not larger air conditioners.
An air conditioners ability to remove moisture increases when it runs for longer periods of time. At the beginning of every cycle the air conditioner puts moisture into the house as water evaporates from the inside coil. Once its run for 3 minutes, it begins to remove moisture. Since a smaller air conditioner runs longer to keep the house at the temperature desired, it removes significantly more moisture than a larger unit. When compared against a 5 ton unit a 2.5 ton unit removes 21% more humidity, while still maintaining the set temperature! Plus you enjoy lower electricity costs and capital costs for your air conditioning and heating system!
Kept clean, properly sized, properly installed air conditioning and heating systems cut energy costs, cut repair costs, cut capital and replacement costs.
Fact: your total costs including capital costs can be cut by many thousands of dollars over a ten year period! $12,000 to $24,000 is not out of the question*. *average varies by house type, size, air usage habits, system age, repairs needed, quality of installation and other variables.
Big dollars under all circumstances. It should also be clear that EFFICIENT and EFFECTIVE Heating and air conditioning is only attained through an experienced, quality orientated air conditioning contractor.
Fact: 9 out of 10 system failures are caused by dirt and dust. (LCES) Louisiana Cooperative Extensions Service.
Fact: Clean systems restore capacity and lessen running time. Translation: Savings on heating/cooling bills, repairs and replacement costs. (LCES)
Fact: A buildup of .042 inches of dirt on a heating or cooling coil can result in a decrease in efficiency of 21%. (EPA) Environmental Protection Agency.
Fact: Most commercially purchased fiberglass filters are only 7% efficient in stopping dirt, dust, pollen, etc. from passing through it. (ASHRAE)
Keep your Heating and air conditioning system clean and you save on gas, power, repair costs and premature replacement costs!