Rated #1 by Industry Experts
Your trusted partner for custom and standard HVAC filters
Any filter size you need, delivered when you need it.
Existing account New accountShop thousands of filter sizes.
Lightning fast lead times: same day for standard; 24 hours for custom.
Pick up or delivery.
We can deliver to 90% of the country next day.

Made in the USA
American made for guaranteed quality, rapid delivery, and superior customer service.
Quantity Discounts
Unlock savings on bulk orders.
Job Tagging
As a complimentary service, we bundle and tag your orders to save you time and money.
Short Lead Times
Production in Miami and Las Vegas means you get your filters faster.
Dedicated Account Manager
Your Filter King Account Manager is ready to assist you with product selection, ordering, and any account-related inquiries.
Job Site Delivery
Spend less time at the supply house and let Filter King deliver your filters directly to your warehouse, truck or job site.
Flexible Payment Options
Choose from a range of payment methods to suit your preferences and financial requirements.
What our commercial partners are saying.
“Excellent customer service …their communications exceed our expectations. I am beyond happy with the…quality of their product.”
“Our company has been very impressed with the exceptional service that Jason and his team have provided to us. Professional, orders always correct and deliveries on time, and Jason is fun to work with!! Highly recommend FILTER KING above all else!!”
“Providing both standard and custom size filters [is] very convenient for my business. The filters are of high quality [and] I am very happy with the service.”

“Really, all has been great! Service is excellent! Pricing and fixed shipping is tremendous! For a reseller like myself, it helps to have that pricing assurance.”

“I have no complaints at all. Filter King has great customer service every time, and the quality of the filters is really good.”

“You guys are awesome. The lead times and prices of the filters are very competitive. I only want to work with you.”

“Filter King's service is amazing and has been very helpful. We had an issue box labeling, but they resolved this issue quickly. The customer service team is responsive and have been incredibly easy to communicate with.”