Cal-Bay Service, Inc.
Heating, cooling and wine cellar refrigeration from an HVAC contractor now based in Benicia, founded in 1989.
About
Cal-Bay Service, Inc. is a heating and air conditioning contractor that the chamber's directory still places at 168 Kit Carson Way in Vallejo. The company's own website now gives its address as 4740 East Second Street, Suite 27, in Benicia, the next town east along the Carquinez Strait, and lists phone numbers different from the one on file here. Max Estrada is the owner in the directory record. With both the address and the phone in question, confirm how to reach the company before booking a visit or dropping by.
Heating, cooling and more
According to its website, Cal-Bay was founded in 1989 and works on air conditioning, heating and ventilation for homes and commercial buildings, including the design and installation of new systems. The site also lists air purification equipment, water heater installation and repair, emergency service and one less common specialty: refrigeration for wine cellars, a handy skill a short drive from the Napa Valley.
The directory files the company under plumbing as well as heating and air conditioning, but its own materials lead with HVAC, and water heaters are the main plumbing work it describes.
Getting a quote
Ask for the contractor's state licence number and check it at cslb.ca.gov before signing. For a replacement system, ask whether the quote includes a load calculation for your house, removal of the old unit, the city permit and the Title 24 duct testing that many California change-outs require. Ask what the manufacturer's parts warranty covers and what the contractor covers in labour. For wine cellar cooling, have the room's size, insulation and target temperature ready. The website gives weekday hours of 8 a.m. to 5 p.m. and Saturday hours of 8 a.m. to 4 p.m.
Solano County service
From Benicia the natural service area runs back west to Vallejo and north along Interstates 680 and 80 to Fairfield, Suisun City and Vacaville, with Dixon and Rio Vista farther out, all in Solano County.
The directory number is 707-425-4720, which research could not match to the company. The website lists (707) 746-8755 and a toll-free line, (800) 654-3136; try those if the first does not answer.
Services
VerifiedRepair, maintenance and replacement of air conditioning for homes and commercial buildings, listed on the company's website as a core service.
Furnace and heating system service and replacement for residential and commercial customers, as described on the company's website.
Ventilation work and air purification systems, which the website lists alongside heating and cooling for customers concerned with indoor air quality.
Cooling systems for wine cellars and storage rooms, a specialty named on the company's website that holds temperature and humidity steady for stored wine.
Installing and repairing water heaters, the main plumbing service the company's website describes alongside its heating and air conditioning work.
Designing and installing new heating and cooling systems, including sizing and layout, for homes and commercial spaces, according to the company's website.
Emergency heating and cooling service, which the website lists in addition to its regular weekday and Saturday hours; call to ask how after-hours visits are handled.
Details
Location and service area
Benicia, CA 94510
Common questions
Typical for this type of businessHow do I check an HVAC contractor's licence?
Search the contractor's name or licence number on the Contractors State License Board site, cslb.ca.gov. The record shows the classification, usually C-20 for warm-air heating, ventilating and air conditioning, the status, and any bond or workers' compensation details.
Does replacing an air conditioner need a permit?
In most California cities, yes. A change-out usually needs a mechanical permit and often duct leakage testing under the Title 24 energy code. Ask the contractor to pull the permit and to arrange the final inspection.
Repair or replace an old system?
Contractors weigh the age of the equipment, the cost of the repair against a new unit, refrigerant type and efficiency. Ask for both options in writing, and ask how long parts for your model will stay available.
What does wine cellar cooling involve?
A dedicated cooling unit, sized to the room, that holds a steady temperature, usually around 55 degrees, and moderate humidity. The room itself needs insulation and a vapour barrier, so the contractor may ask about construction before quoting.
Before you hire
- Check the licence number on cslb.ca.gov before signing a contract
- Confirm the current address and phone, since the directory and the company's site differ
- Ask whether the quote includes the permit, Title 24 duct testing and removal of old equipment
- Get parts and labour warranty terms in writing
- Keep the down payment within the California limit of 10 percent or one thousand dollars, whichever is less
Resumen en español
Cal-Bay Service, Inc. es un contratista de calefacción y aire acondicionado que el directorio aún ubica en Kit Carson Way, en Vallejo, pero su sitio web indica que ahora está en East Second Street, en Benicia, con otros números de teléfono. Según la empresa, fue fundada en 1989 y ofrece aire acondicionado, calefacción, ventilación, purificación de aire, calentadores de agua y refrigeración para cavas de vino. Antes de contratar, verifique la licencia en cslb.ca.gov. Número del directorio: 707-425-4720; la web indica el (707) 746-8755.
Details marked Verified were checked on September 29, 2026 against calbayservice.com. Other details come from public business records or describe what is typical for this type of business, as marked. Not yet confirmed by the business.
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