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Whether you’re in the middle of a coil failure or you want to upgrade your old coils, it’s good to know what to expect.

After providing countless coils for various clients over the years, we’ve developed a guide on the most important things you need to know. Consider these factors the next time you buy your replacement coils:


There are a lot of costs associated with replacing or buying coils. You’re not just paying for the coil but also delivery speed, coil size, coil type, and other factors.
If you’re on a tight budget, you may be inclined to purchase the cheapest coils. Sometimes it’s okay to opt for the more affordable option, but you generally do not want to go down this route when it comes to coils!

Buying the cheapest coil is usually not the best for your job or application. Our coil experts at Mainstream will walk you through the best options for your budget and make sure you get reasonably priced coils without sacrificing performance or quality.



When buying replacements, the timeline of when you need your coils is one of the most important things to consider. Due to the urgency of coil jobs, delivery speed is critical.

Replacing coils for a shut down system will have a different timeline than replacing coils for a hospital after an emergency coil failure. Decide when you’ll need your coils before doing anything else.

Make Sure It Fits

When measuring coils, a good rule of thumb is it’s always better to underestimate size than overestimate.

If the coil is too small, there are still several ways to get around it and make it work for you. However, if a coil is too big, you have no choice but to start all over again and get a new one.

What are you looking for in your replacement coil?

What are you trying to accomplish with your new coils? Are you updating your coils for better performance? Do you want to duplicate the same coils you had before or try a new option?

Mainstream will work with you to help you figure out what coils will work best for the application, even if you do not have all of the necessary information.

Ready to buy your replacement coils? Contact Mainstream today!

Mainstream’s outstanding responsiveness, experience, and extensive coil knowledge make us your best option for all your coil needs. If you need custom replacement HVAC coils or replacement tube bundles, you need only send us the information associated with your heat exchanger or HVAC system. Contact our experts today.