Mountain range in the Yuba Sutter region.
Mountain range in the Yuba Sutter region.

Grow Your AC’s Efficiency This Summer / Time for an AC maintenance

Ready to embrace comfort?  Our team has solutions for all of your heating and cooling needs.

About Duncan's Heating and Air

Duncan's Heating and Air offers excellent heating, ventilation, and air conditioning (HVAC) system installation, replacement, repair, and maintenance in Oregon House and the surrounding areas.

Each of our trained professionals is proud to serve our California customers and our community with integrity. We strive to earn your loyalty and aim to be your trusted source for all your heating and cooling needs.

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Need HVAC Service?

Give us a call at 530-370-6235.

Give us a call at
530-370-6235.

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“Duncan's Heating and Air is amazing. My new HVAC system failed right at the beginning of the summer and after several outrageous estimates from various HVAC companies a friend referred me to Duncan's. They came to my home in a timely manner and gave me an estimate that was several hundreds of dollars below that of the other companies. They were quick to schedule the repair appointment and the tech was able to repair my unit within a few hours. I am so impressed with the kindness and professionalism of this company and I highly recommend them to anyone needing service for their HVAC system.”
- Tamara D.

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“Andrew installed a split system ac unit for us. He was punctual and did nice work! (Felt bad for him, he continued working to get the job done, even in the rain). It was a seamless process from the schedule to job completion. We will definitely use Duncan’s Heating & Air for future needs!”

- Leanette E.

We love hearing from our customers!

If you've had us work on your HVAC system, we would love to hear from you too.

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Our Service Area

We proudly serve all of Yuba, Sutter, and Butte Counties in the great state of California.  Don't hesitate to contact us today to see how we can help you with your heating and cooling problems!

Our Featured Special

STARTING AT $105

Preventative Maintenance Program
for Residential Customers

Duncan's Heeating & Air logo.

Restrictions may apply. Call for details.

STARTING AT $155

Preventative Maintenance Program
for Commercial Customers

Duncan's Heeating & Air logo.

Restrictions may apply. Call for details.

We Service All Brands

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Amana American Standard Ameristar Armstrong Air Carrier Coleman Comfortmaker Daikin Day & Night Fujitsu Goodman Heil Lennox Mitsubishi Payne Rheem RunTru by Trane Ruud Trane Westinghouse York

Read the Duncan's Heating and Air Blog

07/11/25

Why Is My AC Blowing Hot Air? Photo of an overheated woman fanning herself to cool off on her couch.

Why Is My AC Blowing Hot Air?

It’s a hot day outdoors, and you are inside your Marysville home waiting for your air conditioning (AC) system to kick into full gear.

But instead of cool air coming out of your vents, all you feel is hot air!

Read More

06/10/25

Why Is My AC Short Cycling?

Why Is My AC Short Cycling?

Your AC cannot make up its mind.  One minute, it runs. Then it stops. Then it runs again.

Read More

What are you waiting for?
Contact Duncan's Heating and Air today!

What are you waiting for?

CONTACT Duncan's Heating and Air TODAY!