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About Craig HVAC Expert
Expertise
I have been in the HVAC field for the past 12+ years. I can help with most HVAC questions. I work on commerical buildings for the most part, and have yet to find anything I could not troubleshoot and repair, when repairable. I work on small 1 ton units to a 2500 ton chiller. Troubleshoot air flow, elect, and control problems. I attend regular classes to keep up with the latest and greatest.
Experience
I have work in the HVAC trade for the past sixteen years. I work on commerical sites, hospitals, gov't buildings. I can troubleshoot just about anything in the HVAC business.
Education/Credentials
5 years union trade school, VFD training classes, Liebert factory training, some York and Trane factory training.
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You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC > Flush refrigerant lines/ copper vs. steel coil
Expert: Craig HVAC Expert - 11/6/2009
Question
We have 4 contractor quotes on replacing our 15 year old central A/C. One contractor said he "flushes the refrigerant lines" and not all contractors do this. He also recommends buying a system that has a copper coil because "steel coils" corrode faster in humid climates (we live in Fla). Is this contractor providing accurate advise. Thank you.
Answer
It is a requirement to change the lines or flush them out when going from a R-22 system to R-410a system. If the lines are not flushed, is it likely the new system will fail. Most coils, if not all, contain steel. The steel is what supports the coils. Most coils are made of copper tubes and aluminum fins. Coils can be made of a wide range of different metals. The humidity in FL is not a big deal, rather the salt that blows from the ocean is. If you live near salt water, then getting the coils made that resist corrosion is important if you expect the unit to last.
Craig
achelpguy@gmail.com
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