HVAC Service Fast
List
DM

No ratings collected yet

DM Mechanical Inc

Alta Loma, California

8027 WHIRLAWAY ST, Alta Loma, CA 91701, USA

License checked License #1104592 3 yrs experience

Verify this license yourself at the California Contractors State License Board (CSLB).

(626) 476-6097
Claim / Update

DM Mechanical Inc serves customers across California, where HVAC needs shift with the seasons. Summer heat waves push air conditioners hard, while cool coastal evenings and colder inland winters depend on reliable furnaces and heat pumps. Homeowners and property managers often need one contractor who can handle both.

Services Offered

AC Services in Rancho Cucamonga Heating Services in Rancho Cucamonga Ductwork Services in Rancho Cucamonga Heat Pumps in Rancho Cucamonga Furnace Services in Rancho Cucamonga Thermostat Services in Rancho Cucamonga Emergency HVAC in Rancho Cucamonga Maintenance & Tune-up in Rancho Cucamonga

Service Area

Rancho Cucamonga, California All of California

About DM Mechanical Inc

The company provides AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up. Typical work includes inspecting and cleaning system components, checking airflow and refrigerant performance, and sealing or repairing ducts. Thermostat service helps improve temperature control, and emergency calls address sudden breakdowns when a system stops running. Scheduled tune-ups can catch worn parts before they cause larger failures.

DM Mechanical Inc holds California contractor license #1104592 in the state contractor registry and has been licensed since 2023, giving the company more than three years in the trade. Customers can confirm that license number through the California Contractors State License Board before they schedule work.

Anyone comparing local HVAC professionals in California should ask for written estimates, clear explanations of recommended repairs, and proof of current licensing and insurance. HVAC Service Fast lists DM Mechanical Inc so you can review its services alongside other options in one place.

State license record

California license #1104592

Active
Issued by
Contractors State License Board (CSLB)
Status
Active as of Aug 4, 2026
First issued
May 2023 (3 years)
Valid through
May 31, 2027
Business type
Corporation
County on file
San Bernardino

What the license covers

  • 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

What services does DM Mechanical Inc offer?
DM Mechanical Inc offers AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up. Customers can review the full list before choosing the service they need.
Which areas does DM Mechanical Inc serve?
DM Mechanical Inc serves customers throughout California. Check the listing or contact the company to confirm coverage for your specific city or neighborhood.
How do I choose a licensed, insured HVAC contractor in California?
Verify the contractor's license number with the California Contractors State License Board and ask for proof of current liability insurance and workers' compensation coverage. Compare written estimates and confirm the license classification matches the work you need.
What should I check before hiring an HVAC professional?
Review the contractor's license status, insurance, and written estimate, and ask whether the price includes parts, labor, and warranty terms. Ask for a clear explanation of the problem and the recommended fix before approving any work.
What are signs it is time to call an HVAC professional?
Call a professional if your system makes unusual noises, runs constantly without reaching the set temperature, or your energy bills rise suddenly. Persistent odors, weak airflow, or a system that repeatedly shuts off are also reasons to schedule an inspection.

Local market — Rancho Cucamonga

HVAC pros here

94

Have a website

26%

Cooling demand

1,709

Heating demand

1,537

Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).

Local context for Rancho Cucamonga

  • DM Mechanical Inc is one of 92 businesses we list for ac services in Rancho Cucamonga (94 HVAC businesses in total).

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 DM Mechanical Inc

Based on the records we hold for this business.

  • State license on record

    CSLB lists #1104592 as active (record dated Aug 4, 2026). Licensed since 2023. Re-check it yourself before work starts — it is free and takes a minute. Look it up: California Contractors State License Board (CSLB)

  • 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.

  • 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.

  • Ask for local references

    We do not have review data for this business yet. Ask for two or three recent customers near you.

  • 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.

Reviews

No reviews yet. Be the first to review DM Mechanical Inc.

Write a review

Your rating *
Security code

Reviews are moderated before they appear. Please be honest and respectful.

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

Spotted something wrong? Tell us or, if this is your business, claim the listing to correct it.

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.