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Grumman/Butkus Associates
820 DAVIS ST STE 300, Evanston, IL 60201, USA
Verify this license yourself at the California Contractors State License Board (CSLB).
Grumman/Butkus Associates is an HVAC contractor built around AC Services, serving homeowners and businesses across California. Cooling problems tend to surface at the worst moments, so the company focuses on keeping residential and commercial air conditioning running reliably through long, hot stretches. Its customers range from families managing a single home to property owners responsible for several units.
Services Offered
Service Area
About Grumman/Butkus Associates
The company offers a full range of residential and commercial HVAC work. AC Services cover system inspections, refrigerant checks, and condenser and coil cleaning. Heating Services and Furnace Services include burner and ignition inspection, safety testing, and repairs that restore dependable warmth. Heat Pumps are installed and serviced for year-round heating and cooling. Ductwork Services address leaks, poor airflow, and uneven room temperatures, while Thermostat Services cover installation, calibration, and programming. Emergency HVAC responds to urgent breakdowns, and Maintenance and Tune-up visits help catch small issues before they become costly repairs.
Grumman/Butkus Associates holds California state contractor license #1076620, listed in the state contractor registry and held since 2021, which gives the company more than five years in the trade. It serves communities throughout California, where climates range from coastal fog to inland heat. Local conditions shape how systems are sized, maintained, and repaired, and that regional experience informs each service call.
Homeowners and facility managers comparing local pros should confirm a contractor's license, request written estimates, and ask clear questions about the proposed work. For additional local options and listings, visit HVAC Service Fast.
State license record
California license #1076620
Active- Issued by
- Contractors State License Board (CSLB)
- Status
- Active as of Aug 4, 2026
- First issued
- Jun 2021 (5 years)
- Valid through
- Jun 30, 2027
- Business type
- Corporation
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
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Local market — Evanston
HVAC pros here
7
Have a website
86%
Cooling demand
895
Heating demand
6,161
Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).
Local context for Evanston
- Grumman/Butkus Associates is one of 6 businesses we list for ac services in Evanston (7 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 Grumman/Butkus Associates
Based on the records we hold for this business.
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State license on record
CSLB lists #1076620 as active (record dated Aug 4, 2026). Licensed since 2021. 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.