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Duncan's Andrew Heating & Air Conditioning
P O BOX 67, Oregon House, CA 95962, USA
Verify this license yourself at the California Contractors State License Board (CSLB).
When the air conditioner quits during a California heat wave, or the furnace goes silent on a cold morning, homeowners and property managers start searching for AC Services they can trust. Duncan's Andrew Heating & Air Conditioning serves residential and commercial customers who want reliable comfort without guesswork. The company has been licensed as a heating and air conditioning contractor since 1999, under California state contractor license #770898.
Services Offered
Service Area
About Duncan's Andrew Heating & Air Conditioning
The team handles a full range of work. AC Services cover diagnosis, refrigerant checks, and repairs or replacements when a system is failing. Heating Services and Furnace Services address ignition problems, burner issues, and safety inspections. Heat Pumps provide efficient heating and cooling in one system, and Ductwork Services focus on sealing leaks, correcting airflow, and improving how conditioned air reaches each room. Thermostat Services include installation, calibration, and programming, while Emergency HVAC response addresses urgent breakdowns. Routine Maintenance & Tune-up visits keep equipment running efficiently and can catch small problems before they become expensive.
Duncan's Andrew Heating & Air Conditioning works throughout California, where climate varies widely from coastal fog to inland desert heat. Technicians understand how these conditions strain equipment, and they tailor recommendations to the home or building in front of them.
If you are comparing local pros, look for clear explanations, written estimates, and a verifiable license number. Duncan's Andrew Heating & Air Conditioning is one option to consider when you search for an HVAC contractor near me. You can find more local providers on HVAC Service Fast.
State license record
California license #770898
Active- Issued by
- Contractors State License Board (CSLB)
- Status
- Active as of Aug 4, 2026
- First issued
- Nov 1999 (26 years)
- Valid through
- Nov 30, 2027
- Business type
- Sole Owner
- County on file
- Yuba
What the license covers
- B General Building
- C-20 Warm-Air Heating, Ventilating and Air-Conditioning
From CSLB public license data as of Aug 4, 2026. Licenses change — confirm the current status at the California Contractors State License Board (CSLB).
Frequently Asked Questions
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Local market — Smartsville
HVAC pros here
6
Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).
Local context for Smartsville
Buying a new AC or heat pump in California
- California is in the DOE Southwest region: new central air conditioners installed since January 1, 2023 must meet at least 14.3 SEER2 and 11.7 EER2 (13.8 SEER2 and 11.2 EER2 for systems 45,000 BTU/h and larger). Heat pumps must meet 14.3 SEER2 and 7.5 HSPF2 nationwide.
- Since 2025, new systems are built for lower-impact refrigerants such as R-454B or R-32. Ask which refrigerant a quoted system uses and for its AHRI certificate number, which confirms the matched system’s rated efficiency.
Before you hire Duncan's Andrew Heating & Air Conditioning
Based on the records we hold for this business.
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State license on record
CSLB lists #770898 as active (record dated Aug 4, 2026). Licensed since 1999. Re-check it yourself before work starts — it is free and takes a minute. Look it up: California Contractors State License Board (CSLB)
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Ask for proof of insurance
We have no insurance details on file. Ask for a certificate of general liability and workers' compensation coverage before anyone works in your home.
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Ask who pulls the permit
Replacing an AC, furnace, heat pump or water heater usually needs a local permit and inspection. A licensed contractor normally pulls it — ask that the permit is included in the written quote.
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Ask for local references
We do not have review data for this business yet. Ask for two or three recent customers near you.
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California homeowner protection
California law caps the down payment on a home improvement contract at 10% of the contract price or $1,000, whichever is less. Never pay more up front.
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Where this information comes from
- Name, address and phone
- State license records · added Aug 4, 2026
- California license
- CSLB public license data · record date Aug 4, 2026
- Profile summary
- Written automatically from the records above
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HVAC Service Fast is an independent HVAC directory and is not affiliated with this business. Listing details are compiled from publicly available information and may be incomplete or outdated. We do not endorse or guarantee any provider — please verify licensing and insurance directly. See our Disclaimer.