Online air filter supplier for homes and small shops

Sell common HVAC and shop air filters online, with repeat orders shipped on a schedule.

Startup cost$1.5k to $8k
Monthly revenue$500 to $5k
Time needed8+ h/week
First incomeMonths
  • $1.5k-8k
  • Side hustle
  • Online

Estimates for a small start in the US, not guarantees.

Official data

12,266 US businesses with employees in this field, -0.9% in a year

NAICS 423120 “Motor vehicle supplies and new parts merchant wholesalers”. Source: U.S. Census Bureau, County Business Patterns 2023.

What it is

An online store that sells replacement filters for home furnaces, small commercial HVAC units and shop equipment. Customers can reorder on a schedule, such as every 1 to 3 months.

Your first three steps

  1. Pick a niche, such as standard home sizes, custom sizes or landlord multi-packs, and compare wholesale prices from several distributors
  2. Set up a simple online store with a size-finder and reorder option, and register for your EIN and state sales tax if required
  3. Order a small first stock, offer launch deals to local landlords and property managers, and ask for reviews
Who pays

Homeowners, landlords, property managers, small offices and small workshops that need filters regularly.

How it makes money

You buy filters at wholesale prices and sell at a markup, often with a subscription discount. Bulk packs and custom sizes can earn higher margins.

Skills that help
  • Organizing inventory and orders
  • Comparing filter sizes and ratings
  • Basic online store setup
  • Customer service
Watch out for
  • Check your state's rules on sales tax registration and collecting tax on online sales
  • Check with your city or county about a business license and home occupation rules if you store stock at home
  • Shipping bulky filters can be costly, so work out freight before setting prices
  • Make sure sizes and MERV ratings are listed correctly to limit returns
  • General liability and product liability insurance are worth checking with an insurance agent

Deep research report · US

Everything you need to start: online air filter supplier for homes and small shops

Researched with live web search for United States: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start an online air filter business?

Startup costs are typically around $1,500 to $8,000, depending on your opening stock and online store setup. These are estimates, so work out shipping costs for bulky filters before you set prices.

How much can an online air filter store make?

Monthly revenue is typically around $500 to $5,000, depending on how many repeat customers you win and which filters you sell. Treat this as an estimate, not a promise.

What rules should I check before selling air filters online?

Check your state's sales tax registration rules for online sales. Check with your city or county about a business license and home occupation rules if you store stock at home, and ask an insurance agent about general and product liability cover.

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