Top 7 HVAC companies in Solano, California

Solano County sits between coastal and Central Valley climates. Public listings supply the only available data on local HVAC firms. Seven companies appear in the ranked shortlist. Each entry rests on review volume, star rating and minor tie-breakers for a website or 24/7 listing. The Bayesian adjustment pulls every raw score toward the national mean of 4.764, so small samples move farther than large ones.

Climate and load profile

Solano County falls mainly in zones 3B and 3C with dry and marine moisture regimes. Heating degree days total 2,200 while cooling degree days reach 1,000, producing a balanced mixed load. Winter design temperature is 44 degrees and summer design reaches 89 degrees. Coastal pockets often need no air conditioning, yet inland areas are strongly cooling-dominant. Title 24 sets its own 16 climate zones rather than following IECC maps. Equipment must handle low coastal humidity inland and moderate to high central-air saturation. Heat pumps receive favorable state code treatment.

The shortlist

Companies are ranked by a Bayesian-adjusted rating: a company's star rating is pulled toward the national mean until it has enough reviews to stand on its own, so a 5.0 from four customers does not outrank a 4.9 from two hundred. Small tie-breakers apply for a public website, for being listed as an HVAC specialist rather than a general contractor, and for published 24/7 availability. This is a shortlist built from public listing data, not a review of work performed.

Airwise Vacaville HVAC Solutions

Airwise Vacaville HVAC Solutions operates from 5085 Quinn Rd Apt 3108, Vacaville, CA 95688. The firm lists 11 reviews at a raw 5.0 that the model adjusts downward to 4.827. Eleven reviews supply limited weight, so the score moves closer to the national mean of 4.764 than a larger sample would. The listing shows a general-contractor category and 24/7 availability. These signals suggest the company accepts a wide range of calls at any hour. The published phone number is (530) 207-3649. Review volume alone cannot reveal whether the firm maintains its own installation crews or subcontracts Title 24 verification.

Airelio HVAC Services, Inc.

Airelio HVAC Services, Inc. lists its address as 189 Audrey Pl, Vacaville, CA 95687. Twelve reviews produce a raw 5.0 adjusted only slightly to 4.831. The modest review count still pulls the rating toward 4.764. The firm appears under the general-contractor heading and does not advertise 24/7 service. Its phone number is (707) 392-6761. The numbers give no information on how often the company performs heat-pump retrofits versus routine service.

Vacaville HVAC Services

Vacaville HVAC Services is located at 254 Aaron Cir, Vacaville, CA 95687. Six reviews at a raw 5.0 adjust to 4.803. The smaller sample produces a larger movement toward the national mean. The listing carries both a public website and 24/7 availability under the general-contractor category. The contact number is (369) 200-2605. These data points do not indicate whether the firm has handled projects that required failed-test re-inspection by a HERS rater.

CM Mechanical Heating & Air Conditioning​

CM Mechanical Heating & Air Conditioning​ lists 1704 Carswell Ln, Suisun City, CA 94585. Three reviews at raw 5.0 adjust to 4.785. The very small sample creates the largest downward shift among the top entries. The firm shows a website and 24/7 availability in the general-contractor category. Reach them at (707) 580-2039. The review count supplies no evidence on how the company prices change-outs that trigger local permit inspections.

AirFlow HVAC Experts

AirFlow HVAC Experts operates from 613 E Travis Blvd, Fairfield, CA 94533. Nine reviews at raw 5.0 adjust to 4.818. The sample size keeps the score between the raw value and the national mean. The listing shows 24/7 availability under a services category and no website. The phone number is (707) 206-4896. These signals do not disclose whether the firm routinely coordinates with third-party HERS verification.

Always Affordable Plumbing & Hvac

Always Affordable Plumbing & Hvac is at 1652 W Texas St Ste 164, Fairfield, CA 94533. Thirteen reviews produce a raw 4.4 adjusted upward to 4.654 because the score sits below the national mean. The plumber category and website appear in the listing. The phone number is (707) 410-3181. The data give no indication of how often the firm installs equipment that meets current Title 24 requirements.

Fairfield Heating & Air Conditioning

Fairfield Heating & Air Conditioning lists 709 Jackson St, Fairfield, CA 94533. Ten reviews at raw 4.2 adjust upward to 4.623. The sample size produces a noticeable lift toward the national mean. The firm appears under the general-contractor heading with no website or 24/7 listing. Contact is (707) 286-4440. The numbers cannot show how the company manages deposit caps or re-test fees after a failed HERS inspection.

Choosing an installer

Review depth remains low across the entire shortlist. Every firm carries fewer than 15 published reviews, so adjusted scores move several hundredths toward 4.764. Category labels range from general contractor to plumber, with only one services listing. Four firms publish 24/7 availability. These markers help narrow calls but cannot confirm field performance or Title 24 compliance history.

Installed costs

Modeled typical full-system installation sits at $12,550, with a published range of $11,200 to $13,900. Invoiced averages for 2025 reach $23,465 while the upper quartile hits $33,723. Labor is listed at $165 per hour and permit fees range from $250 to $700. Both cost sources appear in the data set. The invoiced average is roughly twice the modeled typical price. High regional costs align with the tier versus national figures.

Licensing and permits

The Contractors State License Board administers licensing at the state level. The relevant classification is C-20 Warm-Air Heating, Ventilating and Air-Conditioning. Statute requires a $25,000 contractor bond and workers compensation insurance whenever employees are present. No employee exemption filing is permitted for C-20 work. Building permits for residential HVAC changeouts are issued by the local city or county building department, not by the state board. Requirements therefore vary inside Solano County.

Incentives and rebates

California Home Energy Rebates remain available in Phase 1, with heat-pump rebates up to $8,000. Utility programs through PG&E and others offer $1,000 to $3,000 or more. No statewide income-tax credit exists for HVAC equipment in 2026. Federal 25C and 25D credits expired at the end of 2025. TECH Clean California requires an enrolled contractor for participation. The rules create the highest-friction environment in the country: C-20 license, Title 24 compliance, mandatory HERS verification, and a statutory deposit cap of the lesser of $1,000 or 10 percent. Homeowners must identify the HERS rater and confirm who pays for any re-test before signing.

Public data alone cannot predict workmanship or long-term reliability. Check the CSLB lookup for every license before requesting bids.