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There’s a lot that goes into understanding coils. With all of the different types and sizes of coils, it can be overwhelming to know what you’re getting into! Our team has seen it all after being in the industry for over 30 years. Here are some of the most frequently asked questions about coils.

1. What types of coils does Mainstream manufacture?

Mainstream manufactures HVAC Coils and Replacement Tube Bundles for all sorts of applications. Our HVAC coil offering includes Hot Water Coils, Steam Coils, Chilled Water Coils, Evaporator (DX) Coils, Duct Reheat Coils, Condenser Coils, Industrial Coils, Coilboxes, Tube Bundles, and Heat Exchangers.


2. Do you offer onsite services?

Yes, Mainstream is happy to measure your coil to guarantee the provided replacement is an exact fit.

3. Do you match coils by model number?

Yes, Mainstream can look up any model number to ensure the replacement coil we provide is a perfect match.

4. Do you offer split coils?

Yes, Mainstream can provide coils split in several different ways. Mainstream can provide bolt-together coils with a tubesheet and a gasket, or pipe-together coils with headers and connections in the middle.

Alternatively, coils can be split and piped out either end of the unit. Or, the back coil can be piped out the center top of the unit.

5. How long does it take to get a quote?

After a quote request is received, our team will contact you to discuss the details of your request. Mainstream will return a quote within one business day and as fast as ½ hour in an emergency.

6. Do you have a coil warranty?

All Mainstream coils are covered under a 1-year warranty.

7. What kind of maintenance do Mainstream coils require?

Whether you have a freeze-proof coil or not, Mainstream recommends draining to prevent internal ice formation. Regular inspection is recommended to ensure proper operation.

8. Where are coils manufactured?

All Mainstream coils are USA-made.

9. What information do you need to quote a coil?

Coils can be quoted from a model number. Alternatively, a Mainstream representative can measure your coil. Try our easy-to-use Coil Quote Form or download Mainstream’s Replacement Coil Worksheet.

10. Are Mainstream coils AHRI certified?

Yes, Mainstream coils are AHRI certified.