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air conditioning units by downing heating

Our Services

Downing Heating Inc offers a professionally-trained Service Department for all of your heating and air conditioning needs. Servicing all makes and models.

Heat Pumps

Air Duct Cleaning

Air Conditioners

& Much More!


Dryer Vent Cleaning

Serving Marin & Sonoma Counties Since 1984
Welcome to
Downing Heating Inc.

Let us be your trusted partner for services, maintenance and installation of HVAC systems.

Carrier Trusted Dealer


Servicing All Brands

Adjusting Temperature downing heating

No Tricks, No Obligation, Free Quote!
Avoid the hassle of starting a project with unrealistic guarentees!

Call Us Today: (415) 485-1011
Visit The Contact Us Page for Additional Contact Info

Upgrade your equipment &
(Marin County)

Get Rebates by Plugging into Electrify Marin

Reduce greenhouse gas emissions by swapping out gas and propane equipment


"I want to express my gratitude for the excellent service we got from your technician, Nick, who came to our very cold house, just before Christmas and not only repaired our old Amana furnace (which continues to work just fine) but also saved us from a cold house and a huge charge for a replacement furnace that another company had declared we needed. 
When our furnace began to function poorly—and at a cold holiday time when it was hard to find a provider available—the first company sent a technician who told us there was a crack in the heat exchanger, so we would need a new furnace—and that he was required by law to turn it off.  He was a nice guy but we are “always get at least two opinions” people.”  He shut down the furnace and arranged for their estimator to come the next day, which he did, leaving us with a pending cost of $13,000-15,000.
When Nick came an hour later, he studied the furnace carefully, agreed it was old but not convinced the heat exchanger was the problem, turned it on to test it, changed the filter and made some adjustments, and left us already warmer and a very reasonable bill.
So we are very grateful to Nick and to Downing for the quality of the work you provide"

Carol K.
sonoma marin union Local 104 heating and cooling shop

Sonoma Marin Local 104 Shop
Building Stronger Communities Together

sheet metal, air, rail, transportation, smart labor union 104 - HVAC services and repairs

Downing Heating, Inc. is a proud Union Shop with Smart Local No. 104. Local Union No. 104 spans 49 California counties from the Oregon border to Ventura County. Worker memberships are made up of over 9,000 highly skilled craftspeople that are trained to perform a wide selection of skills such as the production, fabrication, installation, detailing, and testing and balancing of sheet metal products and HVAC. 

When unions thrive, local communities do too. SMW Local Union 104 supports work opportunities in the areas that our members and their families live in. Building construction projects that have skilled and trained workers, area standard wages, and apprenticeship opportunities mean the surrounding community becomes stronger and more equitable.

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