Air conditioners often use a fan to distribute the conditioned air to an occupied space such as a building or a car to improve thermal comfort and indoor air quality. Electric refrigerant-based AC units range from small units that can cool a small bedroom, which can be carried by a single adult, to massive units installed on the roof of office towers that can cool an entire building. The cooling is typically achieved through a refrigeration cycle, but sometimes evaporation or free cooling is used. Air conditioning systems can also be made based on desiccants (chemicals which remove moisture from the air) and subterraneous pipes that can distribute the heated refrigerant to the ground for cooling.
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I originally took off one star because of the SNAFU with getting the part ordered. When Alberto called me on the phone he admitted the person had "gotten busy with other things" and apologized. THAT was taking the high road and I was impressed by that. Sadly, for reasons I won't guess at, Alberto has decided to take the low road in his comments and imply that they got the part as quickly as possible. Well, we called at 2:30 so did someone spend six and a half hours finding the part?? That seems very doubtful.
Replacement of air filters: dirty filters can lower your unit’s efficiency and cause damage. You can perform monthly checks and cleanings yourself. If your AC is in constant use, you’ll need to replace the filters once per month to keep the unit running properly. Filters typically cost $15-$60. Some filters are reusable, and only need regular cleaning.
HVAC professionals attend to a home's thermal needs as well as air quality. Because of the technical aspects of HVAC work, find out the scope of work your professional can perform. You may only need your heating unit serviced however, if this professional also specializes in energy efficiency, mold assessment, or offer ways for you to save on energy costs, you may want to hire them for future projects. Because some equipment is gas-powered, your professional should be able to answer questions about installing gas lines and permitting.
They did come out Tuesday and completed the job. We called the office to ask for a breakdown of the cost and they said the tech would call us back, but that never happened. Eventually Alberto called and explained the breakdown. One reason it was more was they used an OEM circuit board, rather than an aftermarket part. I agree with this but it would have been better if this had been explained from the beginning. All in all, it still seems like their price is a bit on the high side, but they did a good job and used OEM parts so I'm giving them four stars. Read more
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Second, there are the diagnostics involved as well as the return trip to effect the actual repair. What about the hidden costs such as having the part picked up at the supplier, was this considered? As for the parts manager at our shop having wasted time tracking the part down, it often happens that we have to contact several suppliers to find parts especially during the recent cold spell when so many suppliers were out of stock of even the most common service items due to demand being so high.
Air flow meter Aquastat BACnet Blower door Building automation Carbon dioxide sensor Clean Air Delivery Rate (CADR) Gas sensor Home energy monitor Humidistat HVAC control system Intelligent buildings LonWorks Minimum efficiency reporting value (MERV) OpenTherm Programmable communicating thermostat Programmable thermostat Psychrometrics Room temperature Smart thermostat Thermostat Thermostatic radiator valve
Not obvious is the fact that they need maintenance routinely, just like any other machine. The filter, usually located behind the front grill, needs to be washed. The condenser coil at the back of the unit can accumulate a lot of debris, and might require a special chemical bath. All air conditioning systems, large or small, need good air flow across the evaporator coil and the condenser coil. Efficiency and performance drop rapidly as air flow decreases. Lose enough air flow and the unit will burn out. Rodents can nest inside when not in use, and can foul up the unit in many ways. Wasps and hornets, as well as the honey bee find finned coils to be comfortable nesting places. Nests and dead insects can ruin the air conditioner.
If your air conditioner is old, consider buying an energy-efficient model. Look for the ENERGY STAR® and EnergyGuide labels — qualified central units are about 15% more efficient than standard models. New residential central air conditioner standards went into effect on January 1, 2015; see the efficiency standards for central air conditioners for details, and consider purchasing a system with a higher SEER than the minimum for greater savings.
The manufacture and use of CFCs has been banned or severely restricted due to concerns about ozone depletion (see also Montreal Protocol). In light of these environmental concerns, beginning on November 14, 1994, the U.S. Environmental Protection Agency has restricted the sale, possession and use of refrigerant to only licensed technicians, per rules under sections 608 and 609 of the Clean Air Act.
We moved into a new home and had issues with the heating ducts in one of the rooms. We called HVAC based on other yelp reviews. Overall, everyone we dealt with were friendly, professional and knowledgeable: From the people on the phone managing the schedule to the those performing the work in our house. The day before the scheduled work we asked if additional work could be done (clothes dryer duct cleaning), which they were able to accommodate. The people working at the house were on time, very polite, took great care to keep the house clean during the entire job and explained everything when they were finished. I will certainly use HVAC again.
Its difficult to describe how good of an experience I had with Cobb heat and AC. Ill put it like this, I have gone two 3 other AC repair companies, they send out their most novice field engineer, they give me a 6000 dollar quote to replace my AC for a property I just purchased, and then they leave. Mr Cobb came out himself, figured out the issue cleaned the condenser coils and told me my unit was only a YEAR OLD!!! He did not try to up-sale me or BS me with a quote to replace the boiler which I have had happen as well as the ac unit. Other AC companies suck, I'm sticking with Cobb. hope that helps
Replacing a capacitor is easy. Just take a photo of the wires before disconnecting anything (you may need a reference later on). Then discharge the stored energy in the old capacitor (Photo 4). Use needle-nose pliers to pluck one wire at a time from the old capacitor and snap it onto the corresponding tab of the new capacitor. The female crimp connectors should snap tightly onto the capacitor tabs. Wiggle each connector to see if it’s tight. If it’s not, remove the connector and bend the rounded edges of it so it makes a tighter fit on the tab. When you’ve swapped all the wires, secure the new capacitor (Photo 5).