What It Means to Be an Authorized Lennox dealer

D's Air & Heating is an authorized Lennox dealer, one of a limited number of companies Lennox has trained, certified, and approved to sell, install, and service its equipment directly. That status isn't a marketing claim we made up. It comes with real requirements, and it's what stands behind every system we touch.

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Authorized Lennox dealer (also Carrier & Green authorized)

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Family-Owned Since 2009

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EPA Certified Technicians

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4.8★ Google Rating · 50+Reviews


What "Authorized Lennox dealer" Means for You

  • Your warranty stays protected. Lennox equipment installed by a non-authorized company can put manufacturer warranty coverage at risk. Ours doesn't.
  • You get genuine Lennox parts. No off-brand substitutes, no knockoffs, ever.
  • Our technicians are trained directly by Lennox. That's equipment-specific certification, not just general HVAC know-how.
  • Lennox holds us to a standard. They don't authorize just anyone, and they can take that status away if we don't perform. We've kept it since 2009.


Ready to work with a dealer Lennox itself stands behind? Book Online or 773-940-0965

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Certified Navien Tankless Technician

We'd rather tell you a repair will hold for another season than talk you into a replacement you don't need yet.

Regular continuing-education and code-update courses alongside local and state inspectors, so the work reflects current Washington plumbing code — not just "up to code when it was installed."

Ongoing Code Education

A manufacturer-specific certification for tankless water heater installation and repair. (Worth cross-referencing on the Water Heater Installation page too — it's a concrete credential that page currently doesn't name.)

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Honest diagnosis over easy upsells. 

Our authorized Lennox, Carrier, and Green dealer status means our technicians train directly on the equipment they install, and every job carries real warranty protection behind it.

Manufacturer-backed work, not guesswork. 

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Also Authorized for Carrier and Green

We're also an authorized Carrier dealer and authorized Green dealer, which extends our manufacturer-backed training beyond Lennox alone. Lennox stays our primary focus and what we've built our business around, but that added authorization means more options if your situation calls for it.


See it in action on Furnaces, Heat Pumps, Air Conditioners, Air Handlers, or Commercial HVAC.

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Quick Questions

  • Is D's Air & Heating really an authorized Lennox dealer?

    Yes. We hold that status directly from Lennox, not through a third party, and it covers installation, service, and repair across their full product line.

  • How do I find an authorized Lennox dealer near me in Chicago?

    You've found one. D's Air & Heating is Lennox's authorized dealer for Chicago and the surrounding suburbs, and our status can also be verified directly through Lennox's own dealer locator.

  • What's the difference between an authorized dealer and a regular HVAC company?

     Lennox doesn't sell equipment directly to homeowners. Only authorized dealers like us can install and service it with full manufacturer support behind the work.

  • Does working with an authorized dealer cost more?

    No. It doesn't add to your price, it just means your system is backed by real manufacturer support instead of a workaround.

Don't freeze, call D's…  Work with the dealer Lennox itself trained and certified. Book online or call 773-940-0965.